Sigve Sebastian Farstad
mbed w/ spi bug fig
Fork of
mbed-src
by 
mbed official
Revision 219:993c9b0acbcc, committed 2014-06-02
- Comitter:
- mbed_official
- Date:
- Mon Jun 02 09:45:07 2014 +0100
- Parent:
- 218:44081b78fdc2
- Child:
- 220:aa774fb95d17
- Commit message:
- Synchronized with git revision cd741909614c52b886d34bad5007da2057c1a185
Full URL: https://github.com/mbedmicro/mbed/commit/cd741909614c52b886d34bad5007da2057c1a185/
[NUCLEO_F072RB] Add HAL files
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/PeripheralNames.h Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,82 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_PERIPHERALNAMES_H
+#define MBED_PERIPHERALNAMES_H
+
+#include "cmsis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+ ADC_1 = (int)ADC1_BASE
+} ADCName;
+
+typedef enum {
+ DAC_1 = (int)DAC_BASE
+} DACName;
+
+typedef enum {
+ UART_1 = (int)USART1_BASE,
+ UART_2 = (int)USART2_BASE,
+ UART_3 = (int)USART3_BASE,
+ UART_4 = (int)USART4_BASE
+} UARTName;
+
+#define STDIO_UART_TX PA_2
+#define STDIO_UART_RX PA_3
+#define STDIO_UART UART_2
+
+typedef enum {
+ SPI_1 = (int)SPI1_BASE,
+ SPI_2 = (int)SPI2_BASE
+} SPIName;
+
+typedef enum {
+ I2C_1 = (int)I2C1_BASE,
+ I2C_2 = (int)I2C2_BASE
+} I2CName;
+
+typedef enum {
+ PWM_1 = (int)TIM1_BASE,
+ PWM_2 = (int)TIM2_BASE,
+ PWM_3 = (int)TIM3_BASE,
+ PWM_14 = (int)TIM14_BASE,
+ PWM_15 = (int)TIM15_BASE,
+ PWM_16 = (int)TIM16_BASE,
+ PWM_17 = (int)TIM17_BASE
+} PWMName;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/PinNames.h Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,183 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_PINNAMES_H
+#define MBED_PINNAMES_H
+
+#include "cmsis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define STM_PIN_DATA(MODE, PUPD, AFNUM) ((int)(((AFNUM) << 7) | ((PUPD) << 4) | ((MODE) << 0)))
+
+#define STM_PIN_MODE(X) (((X) >> 0) & 0x0F)
+#define STM_PIN_PUPD(X) (((X) >> 4) & 0x07)
+#define STM_PIN_AFNUM(X) (((X) >> 7) & 0x0F)
+
+#define STM_MODE_INPUT (0)
+#define STM_MODE_OUTPUT_PP (1)
+#define STM_MODE_OUTPUT_OD (2)
+#define STM_MODE_AF_PP (3)
+#define STM_MODE_AF_OD (4)
+#define STM_MODE_ANALOG (5)
+#define STM_MODE_IT_RISING (6)
+#define STM_MODE_IT_FALLING (7)
+#define STM_MODE_IT_RISING_FALLING (8)
+#define STM_MODE_EVT_RISING (9)
+#define STM_MODE_EVT_FALLING (10)
+#define STM_MODE_EVT_RISING_FALLING (11)
+
+// High nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, 6=G, 7=H)
+// Low nibble = pin number
+#define STM_PORT(X) (((uint32_t)(X) >> 4) & 0xF)
+#define STM_PIN(X) ((uint32_t)(X) & 0xF)
+
+typedef enum {
+ PIN_INPUT,
+ PIN_OUTPUT
+} PinDirection;
+
+typedef enum {
+ PA_0 = 0x00,
+ PA_1 = 0x01,
+ PA_2 = 0x02,
+ PA_3 = 0x03,
+ PA_4 = 0x04,
+ PA_5 = 0x05,
+ PA_6 = 0x06,
+ PA_7 = 0x07,
+ PA_8 = 0x08,
+ PA_9 = 0x09,
+ PA_10 = 0x0A,
+ PA_11 = 0x0B,
+ PA_12 = 0x0C,
+ PA_13 = 0x0D,
+ PA_14 = 0x0E,
+ PA_15 = 0x0F,
+
+ PB_0 = 0x10,
+ PB_1 = 0x11,
+ PB_2 = 0x12,
+ PB_3 = 0x13,
+ PB_4 = 0x14,
+ PB_5 = 0x15,
+ PB_6 = 0x16,
+ PB_7 = 0x17,
+ PB_8 = 0x18,
+ PB_9 = 0x19,
+ PB_10 = 0x1A,
+ PB_11 = 0x1B,
+ PB_12 = 0x1C,
+ PB_13 = 0x1D,
+ PB_14 = 0x1E,
+ PB_15 = 0x1F,
+
+ PC_0 = 0x20,
+ PC_1 = 0x21,
+ PC_2 = 0x22,
+ PC_3 = 0x23,
+ PC_4 = 0x24,
+ PC_5 = 0x25,
+ PC_6 = 0x26,
+ PC_7 = 0x27,
+ PC_8 = 0x28,
+ PC_9 = 0x29,
+ PC_10 = 0x2A,
+ PC_11 = 0x2B,
+ PC_12 = 0x2C,
+ PC_13 = 0x2D,
+ PC_14 = 0x2E,
+ PC_15 = 0x2F,
+
+ PD_2 = 0x32,
+
+ PF_0 = 0x50,
+ PF_1 = 0x51,
+
+ // Arduino connector namings
+ A0 = PA_0,
+ A1 = PA_1,
+ A2 = PA_4,
+ A3 = PB_0,
+ A4 = PC_1,
+ A5 = PC_0,
+ D0 = PA_3,
+ D1 = PA_2,
+ D2 = PA_10,
+ D3 = PB_3,
+ D4 = PB_5,
+ D5 = PB_4,
+ D6 = PB_10,
+ D7 = PA_8,
+ D8 = PA_9,
+ D9 = PC_7,
+ D10 = PB_6,
+ D11 = PA_7,
+ D12 = PA_6,
+ D13 = PA_5,
+ D14 = PB_9,
+ D15 = PB_8,
+
+ // Generic signals namings
+ LED1 = PA_5,
+ LED2 = PA_5,
+ LED3 = PA_5,
+ LED4 = PA_5,
+ USER_BUTTON = PC_13,
+ SERIAL_TX = PA_2,
+ SERIAL_RX = PA_3,
+ USBTX = PA_2,
+ USBRX = PA_3,
+ I2C_SCL = PB_8,
+ I2C_SDA = PB_9,
+ SPI_MOSI = PA_7,
+ SPI_MISO = PA_6,
+ SPI_SCK = PA_5,
+ SPI_CS = PB_6,
+ PWM_OUT = PB_3,
+
+ // Not connected
+ NC = (int)0xFFFFFFFF
+} PinName;
+
+typedef enum {
+ PullNone = 0,
+ PullUp = 1,
+ PullDown = 2,
+ OpenDrain = 3,
+ PullDefault = PullNone
+} PinMode;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/PortNames.h Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,48 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_PORTNAMES_H
+#define MBED_PORTNAMES_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+ PortA = 0,
+ PortB = 1,
+ PortC = 2,
+ PortD = 3,
+ PortF = 5
+} PortName;
+
+#ifdef __cplusplus
+}
+#endif
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/analogin_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,190 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "analogin_api.h"
+
+#if DEVICE_ANALOGIN
+
+#include "wait_api.h"
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+
+static const PinMap PinMap_ADC[] = {
+ {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
+ {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
+ {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
+ {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
+ {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
+ {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
+ {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
+ {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
+ {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
+ {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
+ {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
+ {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
+ {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
+ {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
+ {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
+ {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
+ {NC, NC, 0}
+};
+
+ADC_HandleTypeDef AdcHandle;
+
+int adc_inited = 0;
+
+void analogin_init(analogin_t *obj, PinName pin) {
+ // Get the peripheral name from the pin and assign it to the object
+ obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
+
+ if (obj->adc == (ADCName)NC) {
+ error("ADC error: pinout mapping failed.");
+ }
+
+ // Configure GPIO
+ pinmap_pinout(pin, PinMap_ADC);
+
+ // Save pin number for the read function
+ obj->pin = pin;
+
+ // The ADC initialization is done once
+ if (adc_inited == 0) {
+ adc_inited = 1;
+
+ // Enable ADC clock
+ __ADC1_CLK_ENABLE();
+
+ // Configure ADC
+ AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
+ AdcHandle.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
+ AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
+ AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
+ AdcHandle.Init.ScanConvMode = DISABLE;
+ AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV;
+ AdcHandle.Init.LowPowerAutoWait = DISABLE;
+ AdcHandle.Init.LowPowerAutoPowerOff = DISABLE;
+ AdcHandle.Init.ContinuousConvMode = DISABLE;
+ AdcHandle.Init.DiscontinuousConvMode = DISABLE;
+ AdcHandle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
+ AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
+ AdcHandle.Init.DMAContinuousRequests = DISABLE;
+ AdcHandle.Init.Overrun = OVR_DATA_OVERWRITTEN;
+ HAL_ADC_Init(&AdcHandle);
+
+ // Run the ADC calibration
+ HAL_ADCEx_Calibration_Start(&AdcHandle);
+ }
+}
+
+static inline uint16_t adc_read(analogin_t *obj) {
+ ADC_ChannelConfTypeDef sConfig;
+
+ AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
+
+ // Configure ADC channel
+ sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
+ sConfig.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
+
+ switch (obj->pin) {
+ case PA_0:
+ sConfig.Channel = ADC_CHANNEL_0;
+ break;
+ case PA_1:
+ sConfig.Channel = ADC_CHANNEL_1;
+ break;
+ case PA_2:
+ sConfig.Channel = ADC_CHANNEL_2;
+ break;
+ case PA_3:
+ sConfig.Channel = ADC_CHANNEL_3;
+ break;
+ case PA_4:
+ sConfig.Channel = ADC_CHANNEL_4;
+ break;
+ case PA_5:
+ sConfig.Channel = ADC_CHANNEL_5;
+ break;
+ case PA_6:
+ sConfig.Channel = ADC_CHANNEL_6;
+ break;
+ case PA_7:
+ sConfig.Channel = ADC_CHANNEL_7;
+ break;
+ case PB_0:
+ sConfig.Channel = ADC_CHANNEL_8;
+ break;
+ case PB_1:
+ sConfig.Channel = ADC_CHANNEL_9;
+ break;
+ case PC_0:
+ sConfig.Channel = ADC_CHANNEL_10;
+ break;
+ case PC_1:
+ sConfig.Channel = ADC_CHANNEL_11;
+ break;
+ case PC_2:
+ sConfig.Channel = ADC_CHANNEL_12;
+ break;
+ case PC_3:
+ sConfig.Channel = ADC_CHANNEL_13;
+ break;
+ case PC_4:
+ sConfig.Channel = ADC_CHANNEL_14;
+ break;
+ case PC_5:
+ sConfig.Channel = ADC_CHANNEL_15;
+ break;
+ default:
+ return 0;
+ }
+
+ // Clear all channels as it is not done in HAL_ADC_ConfigChannel()
+ AdcHandle.Instance->CHSELR = 0;
+
+ HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
+
+ HAL_ADC_Start(&AdcHandle); // Start conversion
+
+ // Wait end of conversion and get value
+ if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
+ return (HAL_ADC_GetValue(&AdcHandle));
+ } else {
+ return 0;
+ }
+}
+
+uint16_t analogin_read_u16(analogin_t *obj) {
+ return (adc_read(obj));
+}
+
+float analogin_read(analogin_t *obj) {
+ uint16_t value = adc_read(obj);
+ return (float)value * (1.0f / (float)0xFFF); // 12 bits range
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/analogout_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,135 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "analogout_api.h"
+
+#if DEVICE_ANALOGOUT
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+
+#define DAC_RANGE (0xFFF) // 12 bits
+
+static const PinMap PinMap_DAC[] = {
+ {PA_4, DAC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // DAC_OUT1
+ {PA_5, DAC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // DAC_OUT2 (Warning: LED1 is also on this pin)
+ {NC, NC, 0}
+};
+
+static DAC_HandleTypeDef DacHandle;
+
+void analogout_init(dac_t *obj, PinName pin) {
+ DAC_ChannelConfTypeDef sConfig;
+
+ DacHandle.Instance = DAC;
+
+ // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
+ obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
+
+ if (obj->dac == (DACName)NC) {
+ error("DAC pin mapping failed");
+ }
+
+ // Configure GPIO
+ pinmap_pinout(pin, PinMap_DAC);
+
+ // Save the channel for future use
+ obj->pin = pin;
+
+ // Enable DAC clock
+ __DAC1_CLK_ENABLE();
+
+ // Configure DAC
+ sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
+ sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
+
+ if (pin == PA_4) {
+ HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
+ } else { // PA_5
+ HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2);
+ }
+
+ analogout_write_u16(obj, 0);
+}
+
+void analogout_free(dac_t *obj) {
+ // Reset DAC and disable clock
+ __DAC1_FORCE_RESET();
+ __DAC1_RELEASE_RESET();
+ __DAC1_CLK_DISABLE();
+
+ // Configure GPIO
+ pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+}
+
+static inline void dac_write(dac_t *obj, uint16_t value) {
+ if (obj->pin == PA_4) {
+ HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
+ HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1);
+ } else { // PA_5
+ HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
+ HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2);
+ }
+}
+
+static inline int dac_read(dac_t *obj) {
+ if (obj->pin == PA_4) {
+ return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
+ } else { // PA_5
+ return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
+ }
+}
+
+void analogout_write(dac_t *obj, float value) {
+ if (value < 0.0f) {
+ dac_write(obj, 0); // Min value
+ } else if (value > 1.0f) {
+ dac_write(obj, (uint16_t)DAC_RANGE); // Max value
+ } else {
+ dac_write(obj, (uint16_t)(value * (float)DAC_RANGE));
+ }
+}
+
+void analogout_write_u16(dac_t *obj, uint16_t value) {
+ if (value > (uint16_t)DAC_RANGE) {
+ dac_write(obj, (uint16_t)DAC_RANGE); // Max value
+ } else {
+ dac_write(obj, value);
+ }
+}
+
+float analogout_read(dac_t *obj) {
+ uint32_t value = dac_read(obj);
+ return (float)((float)value * (1.0f / (float)DAC_RANGE));
+}
+
+uint16_t analogout_read_u16(dac_t *obj) {
+ return (uint16_t)dac_read(obj);
+}
+
+#endif // DEVICE_ANALOGOUT
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/device.h Mon Jun 02 09:45:07 2014 +0100 @@ -0,0 +1,70 @@ +/* mbed Microcontroller Library + ******************************************************************************* + * Copyright (c) 2014, STMicroelectronics + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + ******************************************************************************* + */ +#ifndef MBED_DEVICE_H +#define MBED_DEVICE_H + +#define DEVICE_PORTIN 1 +#define DEVICE_PORTOUT 1 +#define DEVICE_PORTINOUT 1 + +#define DEVICE_INTERRUPTIN 1 + +#define DEVICE_ANALOGIN 1 +#define DEVICE_ANALOGOUT 1 + +#define DEVICE_SERIAL 1 + +#define DEVICE_I2C 1 +#define DEVICE_I2CSLAVE 1 + +#define DEVICE_SPI 1 +#define DEVICE_SPISLAVE 1 + +#define DEVICE_RTC 1 + +#define DEVICE_PWMOUT 1 + +#define DEVICE_SLEEP 1 + +//======================================= + +#define DEVICE_SEMIHOST 0 +#define DEVICE_LOCALFILESYSTEM 0 +#define DEVICE_ID_LENGTH 24 + +#define DEVICE_DEBUG_AWARENESS 0 + +#define DEVICE_STDIO_MESSAGES 1 + +#define DEVICE_ERROR_RED 0 + +#include "objects.h" + +#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/gpio_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,71 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "gpio_api.h"
+#include "pinmap.h"
+#include "error.h"
+
+extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
+
+uint32_t gpio_set(PinName pin) {
+ if (pin == NC) return 0;
+
+ pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+
+ return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
+}
+
+void gpio_init(gpio_t *obj, PinName pin) {
+ if (pin == NC) return;
+
+ uint32_t port_index = STM_PORT(pin);
+
+ // Enable GPIO clock
+ uint32_t gpio_add = Set_GPIO_Clock(port_index);
+ GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
+
+ // Fill GPIO object structure for future use
+ obj->pin = pin;
+ obj->mask = gpio_set(pin);
+ obj->reg_in = &gpio->IDR;
+ obj->reg_set = &gpio->BSRRL;
+ obj->reg_clr = &gpio->BSRRH;
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode) {
+ pin_mode(obj->pin, mode);
+}
+
+void gpio_dir(gpio_t *obj, PinDirection direction) {
+ if (direction == PIN_OUTPUT) {
+ pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
+ } else { // PIN_INPUT
+ pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/gpio_irq_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,189 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include <stddef.h>
+#include "cmsis.h"
+#include "gpio_irq_api.h"
+#include "pinmap.h"
+#include "error.h"
+
+#define EDGE_NONE (0)
+#define EDGE_RISE (1)
+#define EDGE_FALL (2)
+#define EDGE_BOTH (3)
+
+// EXTI lines: 0-1, 2-3 and 4-15
+#define CHANNEL_NUM (3)
+
+static uint32_t channel_ids[CHANNEL_NUM] = {0, 0, 0};
+static uint32_t channel_gpio[CHANNEL_NUM] = {0, 0, 0};
+static uint32_t channel_pin[CHANNEL_NUM] = {0, 0, 0};
+
+static gpio_irq_handler irq_handler;
+
+static void handle_interrupt_in(uint32_t irq_index) {
+ // Retrieve the gpio and pin that generate the irq
+ GPIO_TypeDef *gpio = (GPIO_TypeDef *)(channel_gpio[irq_index]);
+ uint32_t pin = (uint32_t)(1 << channel_pin[irq_index]);
+
+ // Clear interrupt flag
+ if (__HAL_GPIO_EXTI_GET_FLAG(pin) != RESET) {
+ __HAL_GPIO_EXTI_CLEAR_FLAG(pin);
+ }
+
+ if (channel_ids[irq_index] == 0) return;
+
+ // Check which edge has generated the irq
+ if ((gpio->IDR & pin) == 0) {
+ irq_handler(channel_ids[irq_index], IRQ_FALL);
+ } else {
+ irq_handler(channel_ids[irq_index], IRQ_RISE);
+ }
+}
+
+// EXTI lines 0 to 1
+static void gpio_irq0(void) {
+ handle_interrupt_in(0);
+}
+// EXTI lines 2 to 3
+static void gpio_irq1(void) {
+ handle_interrupt_in(1);
+}
+// EXTI lines 4 to 15
+static void gpio_irq2(void) {
+ handle_interrupt_in(2);
+}
+
+extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
+
+int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) {
+ IRQn_Type irq_n = (IRQn_Type)0;
+ uint32_t vector = 0;
+ uint32_t irq_index;
+
+ if (pin == NC) return -1;
+
+ uint32_t port_index = STM_PORT(pin);
+ uint32_t pin_index = STM_PIN(pin);
+
+ // Select irq number and interrupt routine
+ if ((pin_index == 0) || (pin_index == 1)) {
+ irq_n = EXTI0_1_IRQn;
+ vector = (uint32_t)&gpio_irq0;
+ irq_index = 0;
+ } else if ((pin_index == 2) || (pin_index == 3)) {
+ irq_n = EXTI2_3_IRQn;
+ vector = (uint32_t)&gpio_irq1;
+ irq_index = 1;
+ } else if ((pin_index > 3) && (pin_index < 16)) {
+ irq_n = EXTI4_15_IRQn;
+ vector = (uint32_t)&gpio_irq2;
+ irq_index = 2;
+ } else {
+ error("InterruptIn error: pin not supported.\n");
+ return -1;
+ }
+
+ // Enable GPIO clock
+ uint32_t gpio_add = Set_GPIO_Clock(port_index);
+
+ // Configure GPIO
+ pin_function(pin, STM_PIN_DATA(STM_MODE_IT_FALLING, GPIO_NOPULL, 0));
+
+ // Enable EXTI interrupt
+ NVIC_SetVector(irq_n, vector);
+ NVIC_EnableIRQ(irq_n);
+
+ // Save informations for future use
+ obj->irq_n = irq_n;
+ obj->irq_index = irq_index;
+ obj->event = EDGE_NONE;
+ obj->pin = pin;
+ channel_ids[irq_index] = id;
+ channel_gpio[irq_index] = gpio_add;
+ channel_pin[irq_index] = pin_index;
+
+ irq_handler = handler;
+
+ return 0;
+}
+
+void gpio_irq_free(gpio_irq_t *obj) {
+ channel_ids[obj->irq_index] = 0;
+ channel_gpio[obj->irq_index] = 0;
+ channel_pin[obj->irq_index] = 0;
+ // Disable EXTI line
+ pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ obj->event = EDGE_NONE;
+}
+
+void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) {
+ uint32_t mode = STM_MODE_INPUT;
+ uint32_t pull = GPIO_NOPULL;
+
+ if (enable) {
+
+ pull = GPIO_NOPULL;
+
+ if (event == IRQ_RISE) {
+ if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
+ mode = STM_MODE_IT_RISING_FALLING;
+ obj->event = EDGE_BOTH;
+ } else { // NONE or RISE
+ mode = STM_MODE_IT_RISING;
+ obj->event = EDGE_RISE;
+ }
+ }
+
+ if (event == IRQ_FALL) {
+ if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
+ mode = STM_MODE_IT_RISING_FALLING;
+ obj->event = EDGE_BOTH;
+ } else { // NONE or FALL
+ mode = STM_MODE_IT_FALLING;
+ obj->event = EDGE_FALL;
+ }
+ }
+ } else {
+ mode = STM_MODE_INPUT;
+ pull = GPIO_NOPULL;
+ obj->event = EDGE_NONE;
+ }
+
+ pin_function(obj->pin, STM_PIN_DATA(mode, pull, 0));
+}
+
+void gpio_irq_enable(gpio_irq_t *obj) {
+ NVIC_EnableIRQ(obj->irq_n);
+}
+
+void gpio_irq_disable(gpio_irq_t *obj) {
+ NVIC_DisableIRQ(obj->irq_n);
+ obj->event = EDGE_NONE;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/gpio_object.h Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,66 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_GPIO_OBJECT_H
+#define MBED_GPIO_OBJECT_H
+
+#include "cmsis.h"
+#include "PortNames.h"
+#include "PeripheralNames.h"
+#include "PinNames.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+ PinName pin;
+ uint32_t mask;
+ __IO uint16_t *reg_in;
+ __IO uint16_t *reg_set;
+ __IO uint16_t *reg_clr;
+} gpio_t;
+
+static inline void gpio_write(gpio_t *obj, int value) {
+ if (value) {
+ *obj->reg_set = obj->mask;
+ } else {
+ *obj->reg_clr = obj->mask;
+ }
+}
+
+static inline int gpio_read(gpio_t *obj) {
+ return ((*obj->reg_in & obj->mask) ? 1 : 0);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/i2c_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,384 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "i2c_api.h"
+
+#if DEVICE_I2C
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+
+/* Timeout values for flags and events waiting loops. These timeouts are
+ not based on accurate values, they just guarantee that the application will
+ not remain stuck if the I2C communication is corrupted. */
+#define FLAG_TIMEOUT ((int)0x1000)
+#define LONG_TIMEOUT ((int)0x8000)
+
+static const PinMap PinMap_I2C_SDA[] = {
+ {PB_7, I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
+ {PB_9, I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
+ {PB_11, I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
+ {PB_14, I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C2)},
+ {NC, NC, 0}
+};
+
+static const PinMap PinMap_I2C_SCL[] = {
+ {PB_6, I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
+ {PB_8, I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
+ {PB_10, I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
+ {PB_13, I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C2)},
+ {NC, NC, 0}
+};
+
+I2C_HandleTypeDef I2cHandle;
+
+void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
+ // Determine the I2C to use
+ I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
+ I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
+
+ obj->i2c = (I2CName)pinmap_merge(i2c_sda, i2c_scl);
+
+ if (obj->i2c == (I2CName)NC) {
+ error("I2C error: pinout mapping failed.");
+ }
+
+ // Enable I2C clock
+ if (obj->i2c == I2C_1) {
+ __HAL_RCC_I2C1_CONFIG(RCC_I2C1CLKSOURCE_SYSCLK);
+ __I2C1_CLK_ENABLE();
+ }
+ if (obj->i2c == I2C_2) {
+ __I2C2_CLK_ENABLE();
+ }
+
+ // Configure I2C pins
+ pinmap_pinout(sda, PinMap_I2C_SDA);
+ pinmap_pinout(scl, PinMap_I2C_SCL);
+ pin_mode(sda, OpenDrain);
+ pin_mode(scl, OpenDrain);
+
+ // Reset to clear pending flags if any
+ i2c_reset(obj);
+
+ // I2C configuration
+ i2c_frequency(obj, 100000); // 100 kHz per default
+}
+
+void i2c_frequency(i2c_t *obj, int hz) {
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+
+ // Common settings: I2C clock = 48 MHz, Analog filter = ON, Digital filter coefficient = 0
+ switch (hz) {
+ case 100000:
+ I2cHandle.Init.Timing = 0x10805E89; // Standard mode with Rise Time = 400ns and Fall Time = 100ns
+ break;
+ case 400000:
+ I2cHandle.Init.Timing = 0x00901850; // Fast mode with Rise Time = 250ns and Fall Time = 100ns
+ break;
+ case 1000000:
+ I2cHandle.Init.Timing = 0x00700818; // Fast mode Plus with Rise Time = 60ns and Fall Time = 100ns
+ break;
+ default:
+ error("Only 100kHz, 400kHz and 1MHz I2C frequencies are supported.");
+ break;
+ }
+
+ // I2C configuration
+ I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
+ I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
+ I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
+ I2cHandle.Init.OwnAddress1 = 0;
+ I2cHandle.Init.OwnAddress2 = 0;
+ I2cHandle.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+ HAL_I2C_Init(&I2cHandle);
+}
+
+inline int i2c_start(i2c_t *obj) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ int timeout;
+
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+
+ // Clear Acknowledge failure flag
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_AF);
+
+ // Generate the START condition
+ i2c->CR2 |= I2C_CR2_START;
+
+ // Wait the START condition has been correctly sent
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_BUSY) == RESET) {
+ if ((timeout--) == 0) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+inline int i2c_stop(i2c_t *obj) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+
+ // Generate the STOP condition
+ i2c->CR2 |= I2C_CR2_STOP;
+
+ return 0;
+}
+
+int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+ int timeout;
+ int count;
+ int value;
+
+ if (length == 0) return 0;
+
+ /* update CR2 register */
+ i2c->CR2 = (i2c->CR2 & (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_AUTOEND | I2C_CR2_RD_WRN | I2C_CR2_START | I2C_CR2_STOP)))
+ | (uint32_t)(((uint32_t)address & I2C_CR2_SADD) | (((uint32_t)length << 16) & I2C_CR2_NBYTES) | (uint32_t)I2C_SOFTEND_MODE | (uint32_t)I2C_GENERATE_START_READ);
+
+ // Read all bytes
+ for (count = 0; count < length; count++) {
+ value = i2c_byte_read(obj, 0);
+ data[count] = (char)value;
+ }
+
+ // Wait transfer complete
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_TC) == RESET) {
+ timeout--;
+ if (timeout == 0) {
+ return 0;
+ }
+ }
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_TC);
+
+ // If not repeated start, send stop.
+ if (stop) {
+ i2c_stop(obj);
+ /* Wait until STOPF flag is set */
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_STOPF) == RESET) {
+ timeout--;
+ if (timeout == 0) {
+ return 0;
+ }
+ }
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_STOPF);
+ }
+
+ return length;
+}
+
+int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+ int timeout;
+ int count;
+
+ if (length == 0) return 0;
+
+ /* update CR2 register */
+ i2c->CR2 = (i2c->CR2 & (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_AUTOEND | I2C_CR2_RD_WRN | I2C_CR2_START | I2C_CR2_STOP)))
+ | (uint32_t)(((uint32_t)address & I2C_CR2_SADD) | (((uint32_t)length << 16) & I2C_CR2_NBYTES) | (uint32_t)I2C_SOFTEND_MODE | (uint32_t)I2C_GENERATE_START_WRITE);
+
+
+
+ for (count = 0; count < length; count++) {
+ i2c_byte_write(obj, data[count]);
+ }
+
+ // Wait transfer complete
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_TC) == RESET) {
+ timeout--;
+ if (timeout == 0) {
+ return 0;
+ }
+ }
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_TC);
+
+ // If not repeated start, send stop.
+ if (stop) {
+ i2c_stop(obj);
+ /* Wait until STOPF flag is set */
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_STOPF) == RESET) {
+ timeout--;
+ if (timeout == 0) {
+ return 0;
+ }
+ }
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_STOPF);
+ }
+
+ return count;
+}
+
+int i2c_byte_read(i2c_t *obj, int last) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ int timeout;
+
+ // Wait until the byte is received
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_RXNE) == RESET) {
+ if ((timeout--) == 0) {
+ return 0;
+ }
+ }
+
+ return (int)i2c->RXDR;
+}
+
+int i2c_byte_write(i2c_t *obj, int data) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ int timeout;
+
+ // Wait until the previous byte is transmitted
+ timeout = FLAG_TIMEOUT;
+ while (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_TXIS) == RESET) {
+ if ((timeout--) == 0) {
+ return 0;
+ }
+ }
+
+ i2c->TXDR = (uint8_t)data;
+
+ return 1;
+}
+
+void i2c_reset(i2c_t *obj) {
+ if (obj->i2c == I2C_1) {
+ __I2C1_FORCE_RESET();
+ __I2C1_RELEASE_RESET();
+ }
+ if (obj->i2c == I2C_2) {
+ __I2C2_FORCE_RESET();
+ __I2C2_RELEASE_RESET();
+ }
+}
+
+#if DEVICE_I2CSLAVE
+
+void i2c_slave_address(i2c_t *obj, int idx, uint32_t address, uint32_t mask) {
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ uint16_t tmpreg = 0;
+
+ // disable
+ i2c->OAR1 &= (uint32_t)(~I2C_OAR1_OA1EN);
+ // Get the old register value
+ tmpreg = i2c->OAR1;
+ // Reset address bits
+ tmpreg &= 0xFC00;
+ // Set new address
+ tmpreg |= (uint16_t)((uint16_t)address & (uint16_t)0x00FE); // 7-bits
+ // Store the new register value
+ i2c->OAR1 = tmpreg;
+ // enable
+ i2c->OAR1 |= I2C_OAR1_OA1EN;
+}
+
+void i2c_slave_mode(i2c_t *obj, int enable_slave) {
+
+ I2C_TypeDef *i2c = (I2C_TypeDef *)(obj->i2c);
+ uint16_t tmpreg;
+
+ // Get the old register value
+ tmpreg = i2c->OAR1;
+
+ // Enable / disable slave
+ if (enable_slave == 1) {
+ tmpreg |= I2C_OAR1_OA1EN;
+ } else {
+ tmpreg &= (uint32_t)(~I2C_OAR1_OA1EN);
+ }
+
+ // Set new mode
+ i2c->OAR1 = tmpreg;
+
+}
+
+// See I2CSlave.h
+#define NoData 0 // the slave has not been addressed
+#define ReadAddressed 1 // the master has requested a read from this slave (slave = transmitter)
+#define WriteGeneral 2 // the master is writing to all slave
+#define WriteAddressed 3 // the master is writing to this slave (slave = receiver)
+
+int i2c_slave_receive(i2c_t *obj) {
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+ int retValue = NoData;
+
+ if (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_BUSY) == 1) {
+ if (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_ADDR) == 1) {
+ if (__HAL_I2C_GET_FLAG(&I2cHandle, I2C_FLAG_DIR) == 1)
+ retValue = ReadAddressed;
+ else
+ retValue = WriteAddressed;
+
+ __HAL_I2C_CLEAR_FLAG(&I2cHandle, I2C_FLAG_ADDR);
+ }
+ }
+
+ return (retValue);
+}
+
+int i2c_slave_read(i2c_t *obj, char *data, int length) {
+ char size = 0;
+
+ if (length == 0) return 0;
+
+ while (size < length) data[size++] = (char)i2c_byte_read(obj, 0);
+
+ return size;
+}
+
+int i2c_slave_write(i2c_t *obj, const char *data, int length) {
+ char size = 0;
+ I2cHandle.Instance = (I2C_TypeDef *)(obj->i2c);
+
+ if (length == 0) return 0;
+
+ do {
+ i2c_byte_write(obj, data[size]);
+ size++;
+ } while (size < length);
+
+ return size;
+}
+
+
+#endif // DEVICE_I2CSLAVE
+
+#endif // DEVICE_I2C
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/mbed_overrides.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,34 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "cmsis.h"
+
+// This function is called after RAM initialization and before main.
+void mbed_sdk_init() {
+ // Update the SystemCoreClock variable.
+ SystemCoreClockUpdate();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/objects.h Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,109 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_OBJECTS_H
+#define MBED_OBJECTS_H
+
+#include "cmsis.h"
+#include "PortNames.h"
+#include "PeripheralNames.h"
+#include "PinNames.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct gpio_irq_s {
+ IRQn_Type irq_n;
+ uint32_t irq_index;
+ uint32_t event;
+ PinName pin;
+};
+
+struct port_s {
+ PortName port;
+ uint32_t mask;
+ PinDirection direction;
+ __IO uint16_t *reg_in;
+ __IO uint16_t *reg_out;
+};
+
+struct analogin_s {
+ ADCName adc;
+ PinName pin;
+};
+
+struct dac_s {
+ DACName dac;
+ PinName pin;
+};
+
+struct serial_s {
+ UARTName uart;
+ int index; // Used by irq
+ uint32_t baudrate;
+ uint32_t databits;
+ uint32_t stopbits;
+ uint32_t parity;
+ PinName pin_tx;
+ PinName pin_rx;
+};
+
+struct spi_s {
+ SPIName spi;
+ uint32_t bits;
+ uint32_t cpol;
+ uint32_t cpha;
+ uint32_t mode;
+ uint32_t nss;
+ uint32_t br_presc;
+ PinName pin_miso;
+ PinName pin_mosi;
+ PinName pin_sclk;
+ PinName pin_ssel;
+};
+
+struct i2c_s {
+ I2CName i2c;
+};
+
+struct pwmout_s {
+ PWMName pwm;
+ PinName pin;
+ uint32_t period;
+ uint32_t pulse;
+};
+
+#include "gpio_object.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/pinmap.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,134 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "pinmap.h"
+#include "PortNames.h"
+#include "error.h"
+
+// GPIO mode look-up table
+static const uint32_t gpio_mode[12] = {
+ 0x00000000, // 0 = GPIO_MODE_INPUT
+ 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
+ 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
+ 0x00000002, // 3 = GPIO_MODE_AF_PP
+ 0x00000012, // 4 = GPIO_MODE_AF_OD
+ 0x00000003, // 5 = GPIO_MODE_ANALOG
+ 0x10110000, // 6 = GPIO_MODE_IT_RISING
+ 0x10210000, // 7 = GPIO_MODE_IT_FALLING
+ 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
+ 0x10120000, // 9 = GPIO_MODE_EVT_RISING
+ 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
+ 0x10320000 // 11 = GPIO_MODE_EVT_RISING_FALLING
+};
+
+// Enable GPIO clock and return GPIO base address
+uint32_t Set_GPIO_Clock(uint32_t port_idx) {
+ uint32_t gpio_add = 0;
+ switch (port_idx) {
+ case PortA:
+ gpio_add = GPIOA_BASE;
+ __GPIOA_CLK_ENABLE();
+ break;
+ case PortB:
+ gpio_add = GPIOB_BASE;
+ __GPIOB_CLK_ENABLE();
+ break;
+ case PortC:
+ gpio_add = GPIOC_BASE;
+ __GPIOC_CLK_ENABLE();
+ break;
+ case PortD:
+ gpio_add = GPIOD_BASE;
+ __GPIOD_CLK_ENABLE();
+ break;
+ case PortF:
+ gpio_add = GPIOF_BASE;
+ __GPIOF_CLK_ENABLE();
+ break;
+ default:
+ error("Pinmap error: wrong port number.");
+ break;
+ }
+ return gpio_add;
+}
+
+/**
+ * Configure pin (mode, speed, output type and pull-up/pull-down)
+ */
+void pin_function(PinName pin, int data) {
+ if (pin == NC) return;
+
+ // Get the pin informations
+ uint32_t mode = STM_PIN_MODE(data);
+ uint32_t pupd = STM_PIN_PUPD(data);
+ uint32_t afnum = STM_PIN_AFNUM(data);
+
+ uint32_t port_index = STM_PORT(pin);
+ uint32_t pin_index = STM_PIN(pin);
+
+ // Enable GPIO clock
+ uint32_t gpio_add = Set_GPIO_Clock(port_index);
+ GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
+
+ // Configure GPIO
+ GPIO_InitTypeDef GPIO_InitStructure;
+ GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
+ GPIO_InitStructure.Mode = gpio_mode[mode];
+ GPIO_InitStructure.Pull = pupd;
+ GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
+ GPIO_InitStructure.Alternate = afnum;
+ HAL_GPIO_Init(gpio, &GPIO_InitStructure);
+
+ // [TODO] Disconnect SWDIO and SWCLK signals ?
+ // Warning: For debugging it is necessary to reconnect under reset if this is done.
+ //if ((pin == PA_13) || (pin == PA_14)) {
+ //
+ //}
+}
+
+/**
+ * Configure pin pull-up/pull-down
+ */
+void pin_mode(PinName pin, PinMode mode) {
+ if (pin == NC) return;
+
+ uint32_t port_index = STM_PORT(pin);
+ uint32_t pin_index = STM_PIN(pin);
+
+ // Enable GPIO clock
+ uint32_t gpio_add = Set_GPIO_Clock(port_index);
+ GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
+
+ // Configure pull-up/pull-down resistors
+ uint32_t pupd = (uint32_t)mode;
+ if (pupd > 2) pupd = 0; // Open-drain = No pull-up/No pull-down
+ gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
+ gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
+
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/port_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,97 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "port_api.h"
+#include "pinmap.h"
+#include "gpio_api.h"
+#include "error.h"
+
+#if DEVICE_PORTIN || DEVICE_PORTOUT
+
+extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
+
+// high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
+// low nibble = pin number
+PinName port_pin(PortName port, int pin_n) {
+ return (PinName)(pin_n + (port << 4));
+}
+
+void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
+ uint32_t port_index = (uint32_t)port;
+
+ // Enable GPIO clock
+ uint32_t gpio_add = Set_GPIO_Clock(port_index);
+ GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
+
+ // Fill PORT object structure for future use
+ obj->port = port;
+ obj->mask = mask;
+ obj->direction = dir;
+ obj->reg_in = &gpio->IDR;
+ obj->reg_out = &gpio->ODR;
+
+ port_dir(obj, dir);
+}
+
+void port_dir(port_t *obj, PinDirection dir) {
+ uint32_t i;
+ obj->direction = dir;
+ for (i = 0; i < 16; i++) { // Process all pins
+ if (obj->mask & (1 << i)) { // If the pin is used
+ if (dir == PIN_OUTPUT) {
+ pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
+ } else { // PIN_INPUT
+ pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ }
+ }
+ }
+}
+
+void port_mode(port_t *obj, PinMode mode) {
+ uint32_t i;
+ for (i = 0; i < 16; i++) { // Process all pins
+ if (obj->mask & (1 << i)) { // If the pin is used
+ pin_mode(port_pin(obj->port, i), mode);
+ }
+ }
+}
+
+void port_write(port_t *obj, int value) {
+ *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
+}
+
+int port_read(port_t *obj) {
+ if (obj->direction == PIN_OUTPUT) {
+ return (*obj->reg_out & obj->mask);
+ } else { // PIN_INPUT
+ return (*obj->reg_in & obj->mask);
+ }
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/pwmout_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,254 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "pwmout_api.h"
+
+#if DEVICE_PWMOUT
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+
+// TIM2 cannot be used because already used by the us_ticker
+static const PinMap PinMap_PWM[] = {
+// {PA_1, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH2
+ {PA_1, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15)}, // TIM15_CH1N
+ {PA_2, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15)}, // TIM15_CH1
+// {PA_2, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH3
+ {PA_3, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15)}, // TIM15_CH2
+// {PA_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH4
+ {PA_4, PWM_14, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14)}, // TIM14_CH1
+// {PA_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH1
+ {PA_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM16)}, // TIM16_CH1
+// {PA_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH2
+// {PA_7, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH1N
+// {PA_7, PWM_14, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14)}, // TIM14_CH1
+ {PA_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM17)}, // TIM17_CH1
+ {PA_8, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH1
+ {PA_9, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH2
+ {PA_10, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH3
+ {PA_11, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH4
+
+ {PB_0, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH3
+// {PB_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH2N
+ {PB_1, PWM_14, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM14)}, // TIM14_CH1
+// {PB_1, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH4
+// {PB_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH3N
+// {PB_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH2
+ {PB_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH1
+ {PB_5, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3)}, // TIM3_CH2
+ {PB_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM16)}, // TIM16_CH1N
+ {PB_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM17)}, // TIM17_CH1N
+ {PB_8, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM16)}, // TIM16_CH1
+ {PB_9, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM17)}, // TIM17_CH1
+// {PB_10, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH3
+// {PB_11, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2)}, // TIM2_CH4
+ {PB_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH1N
+ {PB_14, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH1
+// {PB_14, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH2N
+ {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH2
+// {PB_15, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH3N
+// {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM15)}, // TIM15_CH1N
+
+ {PC_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM3)}, // TIM3_CH1
+ {PC_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM3)}, // TIM3_CH2
+ {PC_8, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM3)}, // TIM3_CH3
+ {PC_9, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM3)}, // TIM3_CH4
+
+ {NC, NC, 0}
+};
+
+static TIM_HandleTypeDef TimHandle;
+
+void pwmout_init(pwmout_t* obj, PinName pin) {
+ // Get the peripheral name from the pin and assign it to the object
+ obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
+
+ if (obj->pwm == (PWMName)NC) {
+ error("PWM error: pinout mapping failed.");
+ }
+
+ // Enable TIM clock
+ if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
+ if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
+ if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
+ if (obj->pwm == PWM_14) __TIM14_CLK_ENABLE();
+ if (obj->pwm == PWM_15) __TIM15_CLK_ENABLE();
+ if (obj->pwm == PWM_16) __TIM16_CLK_ENABLE();
+ if (obj->pwm == PWM_17) __TIM17_CLK_ENABLE();
+
+ // Configure GPIO
+ pinmap_pinout(pin, PinMap_PWM);
+
+ obj->pin = pin;
+ obj->period = 0;
+ obj->pulse = 0;
+
+ pwmout_period_us(obj, 20000); // 20 ms per default
+}
+
+void pwmout_free(pwmout_t* obj) {
+ // Configure GPIO
+ pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+}
+
+void pwmout_write(pwmout_t* obj, float value) {
+ TIM_OC_InitTypeDef sConfig;
+ int channel = 0;
+ int complementary_channel = 0;
+
+ TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
+
+ if (value < (float)0.0) {
+ value = 0.0;
+ } else if (value > (float)1.0) {
+ value = 1.0;
+ }
+
+ obj->pulse = (uint32_t)((float)obj->period * value);
+
+ // Configure channels
+ sConfig.OCMode = TIM_OCMODE_PWM1;
+ sConfig.Pulse = obj->pulse;
+ sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
+ sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
+ sConfig.OCFastMode = TIM_OCFAST_DISABLE;
+ sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
+ sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
+
+ switch (obj->pin) {
+ // Channels 1
+ case PA_2:
+ case PA_4:
+ case PA_6:
+ case PA_7:
+ case PA_8:
+ case PB_1:
+ case PB_4:
+ case PB_8:
+ case PB_9:
+ case PB_14:
+ case PC_6:
+ channel = TIM_CHANNEL_1;
+ break;
+ // Channels 1N
+ case PA_1:
+ case PB_6:
+ case PB_7:
+ case PB_13:
+ channel = TIM_CHANNEL_1;
+ complementary_channel = 1;
+ break;
+ // Channels 2
+ case PA_3:
+ case PA_9:
+ case PB_5:
+ case PB_15:
+ case PC_7:
+ channel = TIM_CHANNEL_2;
+ break;
+ // Channels 3
+ case PA_10:
+ case PB_0:
+ case PC_8:
+ channel = TIM_CHANNEL_3;
+ break;
+ // Channels 4
+ case PA_11:
+ case PC_9:
+ channel = TIM_CHANNEL_4;
+ break;
+ default:
+ return;
+ }
+
+ HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
+
+ if (complementary_channel) {
+ HAL_TIMEx_PWMN_Start(&TimHandle, channel);
+ } else {
+ HAL_TIM_PWM_Start(&TimHandle, channel);
+ }
+}
+
+float pwmout_read(pwmout_t* obj) {
+ float value = 0;
+ if (obj->period > 0) {
+ value = (float)(obj->pulse) / (float)(obj->period);
+ }
+ return ((value > (float)1.0) ? (float)(1.0) : (value));
+}
+
+void pwmout_period(pwmout_t* obj, float seconds) {
+ pwmout_period_us(obj, seconds * 1000000.0f);
+}
+
+void pwmout_period_ms(pwmout_t* obj, int ms) {
+ pwmout_period_us(obj, ms * 1000);
+}
+
+void pwmout_period_us(pwmout_t* obj, int us) {
+ TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
+
+ float dc = pwmout_read(obj);
+
+ __HAL_TIM_DISABLE(&TimHandle);
+
+ // Update the SystemCoreClock variable
+ SystemCoreClockUpdate();
+
+ TimHandle.Init.Period = us - 1;
+ TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
+ TimHandle.Init.ClockDivision = 0;
+ TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
+ HAL_TIM_PWM_Init(&TimHandle);
+
+ // Set duty cycle again
+ pwmout_write(obj, dc);
+
+ // Save for future use
+ obj->period = us;
+
+ __HAL_TIM_ENABLE(&TimHandle);
+}
+
+void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
+ pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
+}
+
+void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
+ pwmout_pulsewidth_us(obj, ms * 1000);
+}
+
+void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
+ float value = (float)us / (float)obj->period;
+ pwmout_write(obj, value);
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/rtc_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,196 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "rtc_api.h"
+
+#if DEVICE_RTC
+
+#include "error.h"
+
+static int rtc_inited = 0;
+
+static RTC_HandleTypeDef RtcHandle;
+
+void rtc_init(void) {
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ uint32_t rtc_freq = 0;
+
+ if (rtc_inited) return;
+ rtc_inited = 1;
+
+ RtcHandle.Instance = RTC;
+
+ // Enable Power clock
+ __PWR_CLK_ENABLE();
+
+ // Enable access to Backup domain
+ HAL_PWR_EnableBkUpAccess();
+
+ // Reset Backup domain
+ __HAL_RCC_BACKUPRESET_FORCE();
+ __HAL_RCC_BACKUPRESET_RELEASE();
+
+ // Enable LSE Oscillator
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; /* Mandatory, otherwise the PLL is reconfigured! */
+ RCC_OscInitStruct.LSEState = RCC_LSE_ON; /* External 32.768 kHz clock on OSC_IN/OSC_OUT */
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
+ // Connect LSE to RTC
+ __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
+ rtc_freq = LSE_VALUE;
+ } else {
+ // Enable LSI clock
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
+ RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
+ RCC_OscInitStruct.LSIState = RCC_LSI_ON;
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+ error("RTC error: LSI clock initialization failed.");
+ }
+ // Connect LSI to RTC
+ __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
+ // [TODO] This value is LSI typical value. To be measured precisely using a timer input capture.
+ rtc_freq = 32000;
+ }
+
+ // Enable RTC
+ __HAL_RCC_RTC_ENABLE();
+
+ RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
+ RtcHandle.Init.AsynchPrediv = 127;
+ RtcHandle.Init.SynchPrediv = (rtc_freq / 128) - 1;
+ RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
+ RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
+ RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
+
+ if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
+ error("RTC error: RTC initialization failed.");
+ }
+}
+
+void rtc_free(void) {
+ // Enable Power clock
+ __PWR_CLK_ENABLE();
+
+ // Enable access to Backup domain
+ HAL_PWR_EnableBkUpAccess();
+
+ // Reset Backup domain
+ __HAL_RCC_BACKUPRESET_FORCE();
+ __HAL_RCC_BACKUPRESET_RELEASE();
+
+ // Disable access to Backup domain
+ HAL_PWR_DisableBkUpAccess();
+
+ // Disable LSI and LSE clocks
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+ RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
+ RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
+ HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+ rtc_inited = 0;
+}
+
+int rtc_isenabled(void) {
+ return rtc_inited;
+}
+
+/*
+ RTC Registers
+ RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday
+ RTC_Month 1=january, 2=february, ..., 12=december
+ RTC_Date day of the month 1-31
+ RTC_Year year 0-99
+ struct tm
+ tm_sec seconds after the minute 0-61
+ tm_min minutes after the hour 0-59
+ tm_hour hours since midnight 0-23
+ tm_mday day of the month 1-31
+ tm_mon months since January 0-11
+ tm_year years since 1900
+ tm_wday days since Sunday 0-6
+ tm_yday days since January 1 0-365
+ tm_isdst Daylight Saving Time flag
+*/
+time_t rtc_read(void) {
+ RTC_DateTypeDef dateStruct;
+ RTC_TimeTypeDef timeStruct;
+ struct tm timeinfo;
+
+ RtcHandle.Instance = RTC;
+
+ // Read actual date and time
+ // Warning: the time must be read first!
+ HAL_RTC_GetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
+ HAL_RTC_GetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
+
+ // Setup a tm structure based on the RTC
+ timeinfo.tm_wday = dateStruct.WeekDay;
+ timeinfo.tm_mon = dateStruct.Month - 1;
+ timeinfo.tm_mday = dateStruct.Date;
+ timeinfo.tm_year = dateStruct.Year + 100;
+ timeinfo.tm_hour = timeStruct.Hours;
+ timeinfo.tm_min = timeStruct.Minutes;
+ timeinfo.tm_sec = timeStruct.Seconds;
+
+ // Convert to timestamp
+ time_t t = mktime(&timeinfo);
+
+ return t;
+}
+
+void rtc_write(time_t t) {
+ RTC_DateTypeDef dateStruct;
+ RTC_TimeTypeDef timeStruct;
+
+ RtcHandle.Instance = RTC;
+
+ // Convert the time into a tm
+ struct tm *timeinfo = localtime(&t);
+
+ // Fill RTC structures
+ dateStruct.WeekDay = timeinfo->tm_wday;
+ dateStruct.Month = timeinfo->tm_mon + 1;
+ dateStruct.Date = timeinfo->tm_mday;
+ dateStruct.Year = timeinfo->tm_year - 100;
+ timeStruct.Hours = timeinfo->tm_hour;
+ timeStruct.Minutes = timeinfo->tm_min;
+ timeStruct.Seconds = timeinfo->tm_sec;
+ timeStruct.TimeFormat = RTC_HOURFORMAT12_PM;
+ timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
+ timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
+
+ // Change the RTC current date/time
+ HAL_RTC_SetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
+ HAL_RTC_SetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/serial_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,361 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "serial_api.h"
+
+#if DEVICE_SERIAL
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+#include <string.h>
+
+static const PinMap PinMap_UART_TX[] = {
+ {PA_0, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+ {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+ {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+ {PA_14, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // Warning: SWCLK is also on this pin
+ {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
+ {PB_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+ {PC_4, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
+ {PC_10, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART4)},
+// {PC_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
+ {NC, NC, 0}
+};
+
+static const PinMap PinMap_UART_RX[] = {
+ {PA_1, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+ {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+ {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+ {PA_15, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+ {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
+ {PB_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+ {PC_5, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
+ {PC_11, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART4)},
+// {PC_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
+ {NC, NC, 0}
+};
+
+#define UART_NUM (4)
+
+static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0};
+
+static uart_irq_handler irq_handler;
+
+UART_HandleTypeDef UartHandle;
+
+int stdio_uart_inited = 0;
+serial_t stdio_uart;
+
+static void init_uart(serial_t *obj) {
+ UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+
+ UartHandle.Init.BaudRate = obj->baudrate;
+ UartHandle.Init.WordLength = obj->databits;
+ UartHandle.Init.StopBits = obj->stopbits;
+ UartHandle.Init.Parity = obj->parity;
+ UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+
+ if (obj->pin_rx == NC) {
+ UartHandle.Init.Mode = UART_MODE_TX;
+ } else if (obj->pin_tx == NC) {
+ UartHandle.Init.Mode = UART_MODE_RX;
+ } else {
+ UartHandle.Init.Mode = UART_MODE_TX_RX;
+ }
+
+ HAL_UART_Init(&UartHandle);
+}
+
+void serial_init(serial_t *obj, PinName tx, PinName rx) {
+ // Determine the UART to use (UART_1, UART_2, ...)
+ UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
+ UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
+
+ // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
+ obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
+
+ if (obj->uart == (UARTName)NC) {
+ error("Serial error: pinout mapping failed.");
+ }
+
+ // Enable USART clock
+ if (obj->uart == UART_1) {
+ __USART1_CLK_ENABLE();
+ obj->index = 0;
+ }
+ if (obj->uart == UART_2) {
+ __USART2_CLK_ENABLE();
+ obj->index = 1;
+ }
+
+ if (obj->uart == UART_3) {
+ __USART3_CLK_ENABLE();
+ obj->index = 2;
+ }
+ if (obj->uart == UART_4) {
+ __USART4_CLK_ENABLE();
+ obj->index = 3;
+ }
+
+ // Configure the UART pins
+ pinmap_pinout(tx, PinMap_UART_TX);
+ pinmap_pinout(rx, PinMap_UART_RX);
+ pin_mode(tx, PullUp);
+ pin_mode(rx, PullUp);
+
+ // Configure UART
+ obj->baudrate = 9600;
+ obj->databits = UART_WORDLENGTH_8B;
+ obj->stopbits = UART_STOPBITS_1;
+ obj->parity = UART_PARITY_NONE;
+
+ obj->pin_tx = tx;
+ obj->pin_rx = rx;
+
+ init_uart(obj);
+
+ // For stdio management
+ if (obj->uart == STDIO_UART) {
+ stdio_uart_inited = 1;
+ memcpy(&stdio_uart, obj, sizeof(serial_t));
+ }
+}
+
+void serial_free(serial_t *obj) {
+ // Reset UART and disable clock
+ if (obj->uart == UART_1) {
+ __USART1_FORCE_RESET();
+ __USART1_RELEASE_RESET();
+ __USART1_CLK_DISABLE();
+ }
+ if (obj->uart == UART_2) {
+ __USART2_FORCE_RESET();
+ __USART2_RELEASE_RESET();
+ __USART2_CLK_DISABLE();
+ }
+ if (obj->uart == UART_3) {
+ __USART3_FORCE_RESET();
+ __USART3_RELEASE_RESET();
+ __USART3_CLK_DISABLE();
+ }
+ if (obj->uart == UART_4) {
+ __USART4_FORCE_RESET();
+ __USART4_RELEASE_RESET();
+ __USART4_CLK_DISABLE();
+ }
+
+ // Configure GPIOs
+ pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+
+ serial_irq_ids[obj->index] = 0;
+}
+
+void serial_baud(serial_t *obj, int baudrate) {
+ obj->baudrate = baudrate;
+ init_uart(obj);
+}
+
+void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
+ if (data_bits == 8) {
+ obj->databits = UART_WORDLENGTH_8B;
+ } else {
+ obj->databits = UART_WORDLENGTH_9B;
+ }
+
+ switch (parity) {
+ case ParityOdd:
+ case ParityForced0:
+ obj->parity = UART_PARITY_ODD;
+ break;
+ case ParityEven:
+ case ParityForced1:
+ obj->parity = UART_PARITY_EVEN;
+ break;
+ default: // ParityNone
+ obj->parity = UART_PARITY_NONE;
+ break;
+ }
+
+ if (stop_bits == 2) {
+ obj->stopbits = UART_STOPBITS_2;
+ } else {
+ obj->stopbits = UART_STOPBITS_1;
+ }
+
+ init_uart(obj);
+}
+
+/******************************************************************************
+ * INTERRUPTS HANDLING
+ ******************************************************************************/
+
+static void uart_irq(UARTName name, int id) {
+ UartHandle.Instance = (USART_TypeDef *)name;
+ if (serial_irq_ids[id] != 0) {
+ if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
+ irq_handler(serial_irq_ids[id], TxIrq);
+ __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
+ }
+ if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
+ irq_handler(serial_irq_ids[id], RxIrq);
+ __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
+ }
+ }
+}
+
+static void uart1_irq(void) {
+ uart_irq(UART_1, 0);
+}
+
+static void uart2_irq(void) {
+ uart_irq(UART_2, 1);
+}
+
+static void uart3_irq(void) {
+ uart_irq(UART_3, 2);
+}
+
+static void uart4_irq(void) {
+ uart_irq(UART_4, 3);
+}
+
+void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
+ irq_handler = handler;
+ serial_irq_ids[obj->index] = id;
+}
+
+void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
+ IRQn_Type irq_n = (IRQn_Type)0;
+ uint32_t vector = 0;
+
+ UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+
+ if (obj->uart == UART_1) {
+ irq_n = USART1_IRQn;
+ vector = (uint32_t)&uart1_irq;
+ }
+
+ if (obj->uart == UART_2) {
+ irq_n = USART2_IRQn;
+ vector = (uint32_t)&uart2_irq;
+ }
+
+ if (obj->uart == UART_3) {
+ irq_n = USART3_4_IRQn;
+ vector = (uint32_t)&uart3_irq;
+ }
+
+ if (obj->uart == UART_4) {
+ irq_n = USART3_4_IRQn;
+ vector = (uint32_t)&uart4_irq;
+ }
+
+ if (enable) {
+
+ if (irq == RxIrq) {
+ __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
+ } else { // TxIrq
+ __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
+ }
+
+ NVIC_SetVector(irq_n, vector);
+ NVIC_EnableIRQ(irq_n);
+
+ } else { // disable
+
+ int all_disabled = 0;
+
+ if (irq == RxIrq) {
+ __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
+ // Check if TxIrq is disabled too
+ if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
+ } else { // TxIrq
+ __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
+ // Check if RxIrq is disabled too
+ if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
+ }
+
+ if (all_disabled) NVIC_DisableIRQ(irq_n);
+
+ }
+}
+
+/******************************************************************************
+ * READ/WRITE
+ ******************************************************************************/
+
+int serial_getc(serial_t *obj) {
+ USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
+ while (!serial_readable(obj));
+ return (int)(uart->RDR & (uint16_t)0xFF);
+}
+
+void serial_putc(serial_t *obj, int c) {
+ USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
+ while (!serial_writable(obj));
+ uart->TDR = (uint32_t)(c & (uint16_t)0xFF);
+}
+
+int serial_readable(serial_t *obj) {
+ int status;
+ UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+ // Check if data is received
+ status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
+ return status;
+}
+
+int serial_writable(serial_t *obj) {
+ int status;
+ UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+ // Check if data is transmitted
+ status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
+ return status;
+}
+
+void serial_clear(serial_t *obj) {
+ UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+ __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TXE);
+ __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
+}
+
+void serial_pinout_tx(PinName tx) {
+ pinmap_pinout(tx, PinMap_UART_TX);
+}
+
+void serial_break_set(serial_t *obj) {
+ // [TODO]
+}
+
+void serial_break_clear(serial_t *obj) {
+ // [TODO]
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/sleep.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,53 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "sleep_api.h"
+
+#if DEVICE_SLEEP
+
+#include "cmsis.h"
+
+void sleep(void) {
+ // Stop HAL systick
+ HAL_SuspendTick();
+ // Request to enter SLEEP mode
+ HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
+ // Restart HAL systick
+ HAL_ResumeTick();
+}
+
+void deepsleep(void) {
+ // Request to enter STOP mode with regulator in low power mode
+ HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
+
+ // After wake-up from STOP reconfigure the PLL
+ SetSysClock();
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/spi_api.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,304 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "spi_api.h"
+
+#if DEVICE_SPI
+
+#include <math.h>
+#include "cmsis.h"
+#include "pinmap.h"
+#include "error.h"
+
+static const PinMap PinMap_SPI_MOSI[] = {
+ {PA_7, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_5, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_15, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+ {PC_3, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+ {NC, NC, 0}
+};
+
+static const PinMap PinMap_SPI_MISO[] = {
+ {PA_6, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_4, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_14, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+ {PC_2, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+ {NC, NC, 0}
+};
+
+static const PinMap PinMap_SPI_SCLK[] = {
+ {PA_5, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_3, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_10, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {PB_13, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+ {NC, NC, 0}
+};
+
+static const PinMap PinMap_SPI_SSEL[] = {
+ {PA_4, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PA_15, SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+ {PB_9, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {PB_12, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+ {NC, NC, 0}
+};
+
+static SPI_HandleTypeDef SpiHandle;
+
+static void init_spi(spi_t *obj) {
+ SpiHandle.Instance = (SPI_TypeDef *)(obj->spi);
+
+ __HAL_SPI_DISABLE(&SpiHandle);
+
+ SpiHandle.Init.Mode = obj->mode;
+ SpiHandle.Init.BaudRatePrescaler = obj->br_presc;
+ SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
+ SpiHandle.Init.CLKPhase = obj->cpha;
+ SpiHandle.Init.CLKPolarity = obj->cpol;
+ SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
+ SpiHandle.Init.CRCPolynomial = 7;
+ SpiHandle.Init.DataSize = obj->bits;
+ SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
+ SpiHandle.Init.NSS = obj->nss;
+ SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
+
+ HAL_SPI_Init(&SpiHandle);
+
+ __HAL_SPI_ENABLE(&SpiHandle);
+}
+
+void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel) {
+ // Determine the SPI to use
+ SPIName spi_mosi = (SPIName)pinmap_peripheral(mosi, PinMap_SPI_MOSI);
+ SPIName spi_miso = (SPIName)pinmap_peripheral(miso, PinMap_SPI_MISO);
+ SPIName spi_sclk = (SPIName)pinmap_peripheral(sclk, PinMap_SPI_SCLK);
+ SPIName spi_ssel = (SPIName)pinmap_peripheral(ssel, PinMap_SPI_SSEL);
+
+ SPIName spi_data = (SPIName)pinmap_merge(spi_mosi, spi_miso);
+ SPIName spi_cntl = (SPIName)pinmap_merge(spi_sclk, spi_ssel);
+
+ obj->spi = (SPIName)pinmap_merge(spi_data, spi_cntl);
+
+ if (obj->spi == (SPIName)NC) {
+ error("SPI error: pinout mapping failed.");
+ }
+
+ // Enable SPI clock
+ if (obj->spi == SPI_1) {
+ __SPI1_CLK_ENABLE();
+ }
+ if (obj->spi == SPI_2) {
+ __SPI2_CLK_ENABLE();
+ }
+
+ // Configure the SPI pins
+ pinmap_pinout(mosi, PinMap_SPI_MOSI);
+ pinmap_pinout(miso, PinMap_SPI_MISO);
+ pinmap_pinout(sclk, PinMap_SPI_SCLK);
+
+ // Save new values
+ obj->bits = SPI_DATASIZE_8BIT;
+ obj->cpol = SPI_POLARITY_LOW;
+ obj->cpha = SPI_PHASE_1EDGE;
+ obj->br_presc = SPI_BAUDRATEPRESCALER_256;
+
+ obj->pin_miso = miso;
+ obj->pin_mosi = mosi;
+ obj->pin_sclk = sclk;
+ obj->pin_ssel = ssel;
+
+ if (ssel == NC) { // SW NSS Master mode
+ obj->mode = SPI_MODE_MASTER;
+ obj->nss = SPI_NSS_SOFT;
+ } else { // Slave
+ pinmap_pinout(ssel, PinMap_SPI_SSEL);
+ obj->mode = SPI_MODE_SLAVE;
+ obj->nss = SPI_NSS_HARD_INPUT;
+ }
+
+ init_spi(obj);
+}
+
+void spi_free(spi_t *obj) {
+ // Reset SPI and disable clock
+ if (obj->spi == SPI_1) {
+ __SPI1_FORCE_RESET();
+ __SPI1_RELEASE_RESET();
+ __SPI1_CLK_DISABLE();
+ }
+
+ if (obj->spi == SPI_2) {
+ __SPI2_FORCE_RESET();
+ __SPI2_RELEASE_RESET();
+ __SPI2_CLK_DISABLE();
+ }
+
+ // Configure GPIO
+ pin_function(obj->pin_miso, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ pin_function(obj->pin_mosi, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ pin_function(obj->pin_sclk, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+ pin_function(obj->pin_ssel, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+}
+
+void spi_format(spi_t *obj, int bits, int mode, int slave) {
+ // Save new values
+ if (bits == 16) {
+ obj->bits = SPI_DATASIZE_16BIT;
+ } else {
+ obj->bits = SPI_DATASIZE_8BIT;
+ }
+
+ switch (mode) {
+ case 0:
+ obj->cpol = SPI_POLARITY_LOW;
+ obj->cpha = SPI_PHASE_1EDGE;
+ break;
+ case 1:
+ obj->cpol = SPI_POLARITY_LOW;
+ obj->cpha = SPI_PHASE_2EDGE;
+ break;
+ case 2:
+ obj->cpol = SPI_POLARITY_HIGH;
+ obj->cpha = SPI_PHASE_1EDGE;
+ break;
+ default:
+ obj->cpol = SPI_POLARITY_HIGH;
+ obj->cpha = SPI_PHASE_2EDGE;
+ break;
+ }
+
+ if (slave == 0) {
+ obj->mode = SPI_MODE_MASTER;
+ obj->nss = SPI_NSS_SOFT;
+ } else {
+ obj->mode = SPI_MODE_SLAVE;
+ obj->nss = SPI_NSS_HARD_INPUT;
+ }
+
+ init_spi(obj);
+}
+
+void spi_frequency(spi_t *obj, int hz) {
+ // Note: The frequencies are obtained with SPI clock = 48 MHz (APB clock)
+ if (hz < 375000) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_256; // 188 kHz
+ } else if ((hz >= 375000) && (hz < 750000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_128; // 375 kHz
+ } else if ((hz >= 750000) && (hz < 1000000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_64; // 750 kHz
+ } else if ((hz >= 1000000) && (hz < 3000000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_32; // 1.5 MHz
+ } else if ((hz >= 3000000) && (hz < 6000000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_16; // 3 MHz
+ } else if ((hz >= 6000000) && (hz < 12000000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_8; // 6 MHz
+ } else if ((hz >= 12000000) && (hz < 24000000)) {
+ obj->br_presc = SPI_BAUDRATEPRESCALER_4; // 12 MHz
+ } else { // >= 24000000
+ obj->br_presc = SPI_BAUDRATEPRESCALER_2; // 24 MHz
+ }
+ init_spi(obj);
+}
+
+static inline int ssp_readable(spi_t *obj) {
+ int status;
+ SpiHandle.Instance = (SPI_TypeDef *)(obj->spi);
+ // Check if data is received
+ status = ((__HAL_SPI_GET_FLAG(&SpiHandle, SPI_FLAG_RXNE) != RESET) ? 1 : 0);
+ return status;
+}
+
+static inline int ssp_writeable(spi_t *obj) {
+ int status;
+ SpiHandle.Instance = (SPI_TypeDef *)(obj->spi);
+ // Check if data is transmitted
+ status = ((__HAL_SPI_GET_FLAG(&SpiHandle, SPI_FLAG_TXE) != RESET) ? 1 : 0);
+ return status;
+}
+
+static inline void ssp_write(spi_t *obj, int value) {
+ SPI_TypeDef *spi = (SPI_TypeDef *)(obj->spi);
+ while (!ssp_writeable(obj));
+
+ if (obj->bits <= SPI_DATASIZE_8BIT) {
+ // force 8-bit access the data register due to SPI data buffer in this device
+ uint8_t *p_spi_dr = 0;
+ p_spi_dr = (uint8_t *) & (spi->DR);
+ *p_spi_dr = (uint8_t)value;
+ } else {
+ spi->DR = (uint16_t)value;
+ }
+}
+
+static inline int ssp_read(spi_t *obj) {
+ SPI_TypeDef *spi = (SPI_TypeDef *)(obj->spi);
+ while (!ssp_readable(obj));
+
+ if (obj->bits <= SPI_DATASIZE_8BIT) {
+ // force 8-bit access the data register due to SPI data buffer in this device
+ uint8_t *p_spi_dr = 0;
+ p_spi_dr = (uint8_t *) & (spi->DR);
+ return (int)(*p_spi_dr);
+ } else {
+ return (int)spi->DR;
+ }
+}
+
+static inline int ssp_busy(spi_t *obj) {
+ int status;
+ SpiHandle.Instance = (SPI_TypeDef *)(obj->spi);
+ status = ((__HAL_SPI_GET_FLAG(&SpiHandle, SPI_FLAG_BSY) != RESET) ? 1 : 0);
+ return status;
+}
+
+int spi_master_write(spi_t *obj, int value) {
+ ssp_write(obj, value);
+ return ssp_read(obj);
+}
+
+int spi_slave_receive(spi_t *obj) {
+ return (ssp_readable(obj) && !ssp_busy(obj)) ? (1) : (0);
+};
+
+int spi_slave_read(spi_t *obj) {
+ SPI_TypeDef *spi = (SPI_TypeDef *)(obj->spi);
+ while (!ssp_readable(obj));
+ return (int)spi->DR;
+}
+
+void spi_slave_write(spi_t *obj, int value) {
+ SPI_TypeDef *spi = (SPI_TypeDef *)(obj->spi);
+ while (!ssp_writeable(obj));
+ spi->DR = (uint16_t)value;
+}
+
+int spi_busy(spi_t *obj) {
+ return ssp_busy(obj);
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/us_ticker.c Mon Jun 02 09:45:07 2014 +0100
@@ -0,0 +1,84 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <stddef.h>
+#include "us_ticker_api.h"
+#include "PeripheralNames.h"
+
+// 32-bit timer selection
+#define TIM_MST TIM2
+#define TIM_MST_IRQ TIM2_IRQn
+#define TIM_MST_RCC __TIM2_CLK_ENABLE()
+
+static TIM_HandleTypeDef TimMasterHandle;
+static int us_ticker_inited = 0;
+
+void us_ticker_init(void) {
+ if (us_ticker_inited) return;
+ us_ticker_inited = 1;
+
+ // Update the SystemCoreClock variable
+ SystemCoreClockUpdate();
+
+ // Enable timer clock
+ TIM_MST_RCC;
+
+ // Configure time base
+ TimMasterHandle.Instance = TIM_MST;
+ TimMasterHandle.Init.Period = 0xFFFFFFFF;
+ TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
+ TimMasterHandle.Init.ClockDivision = 0;
+ TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
+ TimMasterHandle.Init.RepetitionCounter = 0;
+ HAL_TIM_OC_Init(&TimMasterHandle);
+
+ NVIC_SetVector(TIM_MST_IRQ, (uint32_t)us_ticker_irq_handler);
+ NVIC_EnableIRQ(TIM_MST_IRQ);
+
+ // Enable timer
+ HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
+}
+
+uint32_t us_ticker_read() {
+ if (!us_ticker_inited) us_ticker_init();
+ return TIM_MST->CNT;
+}
+
+void us_ticker_set_interrupt(unsigned int timestamp) {
+ // Set new output compare value
+ __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, timestamp);
+ // Enable IT
+ __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
+}
+
+void us_ticker_disable_interrupt(void) {
+ __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
+}
+
+void us_ticker_clear_interrupt(void) {
+ __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
+}