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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/analogin_api.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
227:7bd0639b8911
Child:
291:bdc8a81aee9a
Synchronized with git revision 490d1a6606b3138f165c5edf2f2370ca616587c0



Full URL: https://github.com/mbedmicro/mbed/commit/490d1a6606b3138f165c5edf2f2370ca616587c0/



[LPC1114] Sleep fix + some device.h settings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /* mbed Microcontroller Library
mbed_official 181:a4cbdfbbd2f4 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 181:a4cbdfbbd2f4 3 * All rights reserved.
mbed_official 181:a4cbdfbbd2f4 4 *
mbed_official 181:a4cbdfbbd2f4 5 * Redistribution and use in source and binary forms, with or without
mbed_official 181:a4cbdfbbd2f4 6 * modification, are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 7 *
mbed_official 181:a4cbdfbbd2f4 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 9 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 12 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 14 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 15 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 16 *
mbed_official 181:a4cbdfbbd2f4 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 27 */
mbed_official 227:7bd0639b8911 28 #include "mbed_assert.h"
mbed_official 181:a4cbdfbbd2f4 29 #include "analogin_api.h"
mbed_official 181:a4cbdfbbd2f4 30
mbed_official 181:a4cbdfbbd2f4 31 #if DEVICE_ANALOGIN
mbed_official 181:a4cbdfbbd2f4 32
mbed_official 181:a4cbdfbbd2f4 33 #include "wait_api.h"
mbed_official 181:a4cbdfbbd2f4 34 #include "cmsis.h"
mbed_official 181:a4cbdfbbd2f4 35 #include "pinmap.h"
mbed_official 181:a4cbdfbbd2f4 36
mbed_official 181:a4cbdfbbd2f4 37 static const PinMap PinMap_ADC[] = {
mbed_official 181:a4cbdfbbd2f4 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 181:a4cbdfbbd2f4 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 181:a4cbdfbbd2f4 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 181:a4cbdfbbd2f4 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 181:a4cbdfbbd2f4 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 181:a4cbdfbbd2f4 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 181:a4cbdfbbd2f4 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 181:a4cbdfbbd2f4 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 181:a4cbdfbbd2f4 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 181:a4cbdfbbd2f4 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 181:a4cbdfbbd2f4 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 181:a4cbdfbbd2f4 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 181:a4cbdfbbd2f4 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 181:a4cbdfbbd2f4 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 181:a4cbdfbbd2f4 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 181:a4cbdfbbd2f4 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 181:a4cbdfbbd2f4 54 {NC, NC, 0}
mbed_official 181:a4cbdfbbd2f4 55 };
mbed_official 181:a4cbdfbbd2f4 56
mbed_official 181:a4cbdfbbd2f4 57 ADC_HandleTypeDef AdcHandle;
mbed_official 181:a4cbdfbbd2f4 58
mbed_official 181:a4cbdfbbd2f4 59 int adc_inited = 0;
mbed_official 181:a4cbdfbbd2f4 60
mbed_official 181:a4cbdfbbd2f4 61 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 181:a4cbdfbbd2f4 62 // Get the peripheral name from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 63 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 227:7bd0639b8911 64 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 181:a4cbdfbbd2f4 65
mbed_official 181:a4cbdfbbd2f4 66 // Configure GPIO
mbed_official 181:a4cbdfbbd2f4 67 pinmap_pinout(pin, PinMap_ADC);
mbed_official 181:a4cbdfbbd2f4 68
mbed_official 181:a4cbdfbbd2f4 69 // Save pin number for the read function
mbed_official 181:a4cbdfbbd2f4 70 obj->pin = pin;
mbed_official 181:a4cbdfbbd2f4 71
mbed_official 181:a4cbdfbbd2f4 72 // The ADC initialization is done once
mbed_official 181:a4cbdfbbd2f4 73 if (adc_inited == 0) {
mbed_official 181:a4cbdfbbd2f4 74 adc_inited = 1;
mbed_official 181:a4cbdfbbd2f4 75
mbed_official 181:a4cbdfbbd2f4 76 // Enable ADC clock
mbed_official 181:a4cbdfbbd2f4 77 __ADC1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 78
mbed_official 181:a4cbdfbbd2f4 79 // Configure ADC
mbed_official 181:a4cbdfbbd2f4 80 AdcHandle.Init.OversamplingMode = DISABLE;
mbed_official 181:a4cbdfbbd2f4 81 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; // ADCCLK = 8 MHz (HSI 16 MHz / 2)
mbed_official 181:a4cbdfbbd2f4 82 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 181:a4cbdfbbd2f4 83 AdcHandle.Init.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
mbed_official 181:a4cbdfbbd2f4 84 AdcHandle.Init.ScanDirection = ADC_SCAN_DIRECTION_UPWARD;
mbed_official 181:a4cbdfbbd2f4 85 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 181:a4cbdfbbd2f4 86 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 181:a4cbdfbbd2f4 87 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 181:a4cbdfbbd2f4 88 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
mbed_official 181:a4cbdfbbd2f4 89 AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIG0_T6_TRGO; // Not used here
mbed_official 181:a4cbdfbbd2f4 90 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 181:a4cbdfbbd2f4 91 AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV;
mbed_official 181:a4cbdfbbd2f4 92 AdcHandle.Init.Overrun = OVR_DATA_PRESERVED;
mbed_official 181:a4cbdfbbd2f4 93 AdcHandle.Init.LowPowerAutoWait = ENABLE;
mbed_official 181:a4cbdfbbd2f4 94 AdcHandle.Init.LowPowerFrequencyMode = DISABLE; // To be enabled only if ADC clock < 2.8 MHz
mbed_official 181:a4cbdfbbd2f4 95 AdcHandle.Init.LowPowerAutoOff = ENABLE;
mbed_official 181:a4cbdfbbd2f4 96 HAL_ADC_Init(&AdcHandle);
mbed_official 181:a4cbdfbbd2f4 97 }
mbed_official 181:a4cbdfbbd2f4 98 }
mbed_official 181:a4cbdfbbd2f4 99
mbed_official 181:a4cbdfbbd2f4 100 static inline uint16_t adc_read(analogin_t *obj) {
mbed_official 181:a4cbdfbbd2f4 101 ADC_ChannelConfTypeDef sConfig;
mbed_official 181:a4cbdfbbd2f4 102
mbed_official 181:a4cbdfbbd2f4 103 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 181:a4cbdfbbd2f4 104
mbed_official 181:a4cbdfbbd2f4 105 // Configure ADC channel
mbed_official 181:a4cbdfbbd2f4 106 switch (obj->pin) {
mbed_official 181:a4cbdfbbd2f4 107 case PA_0:
mbed_official 181:a4cbdfbbd2f4 108 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 181:a4cbdfbbd2f4 109 break;
mbed_official 181:a4cbdfbbd2f4 110 case PA_1:
mbed_official 181:a4cbdfbbd2f4 111 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 181:a4cbdfbbd2f4 112 break;
mbed_official 181:a4cbdfbbd2f4 113 case PA_2:
mbed_official 181:a4cbdfbbd2f4 114 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 181:a4cbdfbbd2f4 115 break;
mbed_official 181:a4cbdfbbd2f4 116 case PA_3:
mbed_official 181:a4cbdfbbd2f4 117 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 181:a4cbdfbbd2f4 118 break;
mbed_official 181:a4cbdfbbd2f4 119 case PA_4:
mbed_official 181:a4cbdfbbd2f4 120 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 181:a4cbdfbbd2f4 121 break;
mbed_official 181:a4cbdfbbd2f4 122 case PA_5:
mbed_official 181:a4cbdfbbd2f4 123 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 181:a4cbdfbbd2f4 124 break;
mbed_official 181:a4cbdfbbd2f4 125 case PA_6:
mbed_official 181:a4cbdfbbd2f4 126 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 181:a4cbdfbbd2f4 127 break;
mbed_official 181:a4cbdfbbd2f4 128 case PA_7:
mbed_official 181:a4cbdfbbd2f4 129 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 181:a4cbdfbbd2f4 130 break;
mbed_official 181:a4cbdfbbd2f4 131 case PB_0:
mbed_official 181:a4cbdfbbd2f4 132 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 181:a4cbdfbbd2f4 133 break;
mbed_official 181:a4cbdfbbd2f4 134 case PB_1:
mbed_official 181:a4cbdfbbd2f4 135 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 181:a4cbdfbbd2f4 136 break;
mbed_official 181:a4cbdfbbd2f4 137 case PC_0:
mbed_official 181:a4cbdfbbd2f4 138 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 181:a4cbdfbbd2f4 139 break;
mbed_official 181:a4cbdfbbd2f4 140 case PC_1:
mbed_official 181:a4cbdfbbd2f4 141 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 181:a4cbdfbbd2f4 142 break;
mbed_official 181:a4cbdfbbd2f4 143 case PC_2:
mbed_official 181:a4cbdfbbd2f4 144 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 181:a4cbdfbbd2f4 145 break;
mbed_official 181:a4cbdfbbd2f4 146 case PC_3:
mbed_official 181:a4cbdfbbd2f4 147 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 181:a4cbdfbbd2f4 148 break;
mbed_official 181:a4cbdfbbd2f4 149 case PC_4:
mbed_official 181:a4cbdfbbd2f4 150 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 181:a4cbdfbbd2f4 151 break;
mbed_official 181:a4cbdfbbd2f4 152 case PC_5:
mbed_official 181:a4cbdfbbd2f4 153 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 181:a4cbdfbbd2f4 154 break;
mbed_official 181:a4cbdfbbd2f4 155 default:
mbed_official 181:a4cbdfbbd2f4 156 return 0;
mbed_official 181:a4cbdfbbd2f4 157 }
mbed_official 181:a4cbdfbbd2f4 158
mbed_official 181:a4cbdfbbd2f4 159 ADC1->CHSELR = 0; // [TODO] Workaround. To be removed after Cube driver is corrected.
mbed_official 181:a4cbdfbbd2f4 160 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 181:a4cbdfbbd2f4 161
mbed_official 181:a4cbdfbbd2f4 162 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 181:a4cbdfbbd2f4 163
mbed_official 181:a4cbdfbbd2f4 164 // Wait end of conversion and get value
mbed_official 181:a4cbdfbbd2f4 165 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 181:a4cbdfbbd2f4 166 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 181:a4cbdfbbd2f4 167 } else {
mbed_official 181:a4cbdfbbd2f4 168 return 0;
mbed_official 181:a4cbdfbbd2f4 169 }
mbed_official 181:a4cbdfbbd2f4 170 }
mbed_official 181:a4cbdfbbd2f4 171
mbed_official 181:a4cbdfbbd2f4 172 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 181:a4cbdfbbd2f4 173 return (adc_read(obj));
mbed_official 181:a4cbdfbbd2f4 174 }
mbed_official 181:a4cbdfbbd2f4 175
mbed_official 181:a4cbdfbbd2f4 176 float analogin_read(analogin_t *obj) {
mbed_official 181:a4cbdfbbd2f4 177 uint16_t value = adc_read(obj);
mbed_official 181:a4cbdfbbd2f4 178 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 181:a4cbdfbbd2f4 179 }
mbed_official 181:a4cbdfbbd2f4 180
mbed_official 181:a4cbdfbbd2f4 181 #endif