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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_F334R8/analogout_api.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
251:de9a1e4ffd79
Child:
285:31249416b6f9
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 237:f3da66175598 1 /* mbed Microcontroller Library
mbed_official 237:f3da66175598 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 237:f3da66175598 3 * All rights reserved.
mbed_official 237:f3da66175598 4 *
mbed_official 237:f3da66175598 5 * Redistribution and use in source and binary forms, with or without
mbed_official 237:f3da66175598 6 * modification, are permitted provided that the following conditions are met:
mbed_official 237:f3da66175598 7 *
mbed_official 237:f3da66175598 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 237:f3da66175598 9 * this list of conditions and the following disclaimer.
mbed_official 237:f3da66175598 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 237:f3da66175598 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 237:f3da66175598 12 * and/or other materials provided with the distribution.
mbed_official 237:f3da66175598 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 237:f3da66175598 14 * may be used to endorse or promote products derived from this software
mbed_official 237:f3da66175598 15 * without specific prior written permission.
mbed_official 237:f3da66175598 16 *
mbed_official 237:f3da66175598 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 237:f3da66175598 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 237:f3da66175598 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 237:f3da66175598 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 237:f3da66175598 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 237:f3da66175598 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 237:f3da66175598 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 237:f3da66175598 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 237:f3da66175598 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 237:f3da66175598 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 237:f3da66175598 27 */
mbed_official 237:f3da66175598 28 #include "mbed_assert.h"
mbed_official 237:f3da66175598 29 #include "analogout_api.h"
mbed_official 237:f3da66175598 30
mbed_official 237:f3da66175598 31 #if DEVICE_ANALOGOUT
mbed_official 237:f3da66175598 32
mbed_official 237:f3da66175598 33 #include "cmsis.h"
mbed_official 237:f3da66175598 34 #include "pinmap.h"
mbed_official 251:de9a1e4ffd79 35 #include "error.h"
mbed_official 237:f3da66175598 36
mbed_official 237:f3da66175598 37 #define DAC_RANGE (0xFFF) // 12 bits
mbed_official 237:f3da66175598 38
mbed_official 237:f3da66175598 39 static const PinMap PinMap_DAC[] = {
mbed_official 237:f3da66175598 40 {PA_4, DAC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // DAC1_OUT1
mbed_official 237:f3da66175598 41 {PA_5, DAC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // DAC1_OUT2 (Warning: LED1 is also on this pin)
mbed_official 237:f3da66175598 42 {PA_6, DAC_2, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // DAC2_OUT1
mbed_official 237:f3da66175598 43 {NC, NC, 0}
mbed_official 237:f3da66175598 44 };
mbed_official 237:f3da66175598 45
mbed_official 237:f3da66175598 46 static DAC_HandleTypeDef DacHandle;
mbed_official 237:f3da66175598 47
mbed_official 237:f3da66175598 48 // These variables are used for the "free" function
mbed_official 237:f3da66175598 49 static int pa4_used = 0;
mbed_official 237:f3da66175598 50 static int pa5_used = 0;
mbed_official 237:f3da66175598 51
mbed_official 237:f3da66175598 52 void analogout_init(dac_t *obj, PinName pin)
mbed_official 237:f3da66175598 53 {
mbed_official 237:f3da66175598 54 DAC_ChannelConfTypeDef sConfig;
mbed_official 237:f3da66175598 55
mbed_official 237:f3da66175598 56 // Get the peripheral name (DAC_1, DAC_2...) from the pin and assign it to the object
mbed_official 237:f3da66175598 57 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 237:f3da66175598 58 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 237:f3da66175598 59
mbed_official 237:f3da66175598 60 // Configure GPIO
mbed_official 237:f3da66175598 61 pinmap_pinout(pin, PinMap_DAC);
mbed_official 237:f3da66175598 62
mbed_official 237:f3da66175598 63 // Save the pin for future use
mbed_official 237:f3da66175598 64 obj->pin = pin;
mbed_official 237:f3da66175598 65
mbed_official 237:f3da66175598 66 // Enable DAC clock
mbed_official 237:f3da66175598 67 if (obj->dac == DAC_1) {
mbed_official 237:f3da66175598 68 __DAC1_CLK_ENABLE();
mbed_official 237:f3da66175598 69 }
mbed_official 237:f3da66175598 70 if (obj->dac == DAC_2) {
mbed_official 237:f3da66175598 71 __DAC2_CLK_ENABLE();
mbed_official 237:f3da66175598 72 }
mbed_official 237:f3da66175598 73
mbed_official 237:f3da66175598 74 // Configure DAC
mbed_official 237:f3da66175598 75 DacHandle.Instance = (DAC_TypeDef *)(obj->dac);
mbed_official 237:f3da66175598 76
mbed_official 237:f3da66175598 77 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
mbed_official 237:f3da66175598 78 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
mbed_official 237:f3da66175598 79
mbed_official 237:f3da66175598 80 if (pin == PA_4) {
mbed_official 237:f3da66175598 81 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 237:f3da66175598 82 pa4_used = 1;
mbed_official 237:f3da66175598 83 }
mbed_official 237:f3da66175598 84
mbed_official 237:f3da66175598 85 if (pin == PA_5) {
mbed_official 237:f3da66175598 86 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2);
mbed_official 237:f3da66175598 87 pa5_used = 1;
mbed_official 237:f3da66175598 88 }
mbed_official 237:f3da66175598 89
mbed_official 237:f3da66175598 90 if (pin == PA_6) {
mbed_official 237:f3da66175598 91 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 237:f3da66175598 92 }
mbed_official 237:f3da66175598 93
mbed_official 237:f3da66175598 94 analogout_write_u16(obj, 0);
mbed_official 237:f3da66175598 95 }
mbed_official 237:f3da66175598 96
mbed_official 237:f3da66175598 97 void analogout_free(dac_t *obj)
mbed_official 237:f3da66175598 98 {
mbed_official 237:f3da66175598 99 // Reset DAC and disable clock
mbed_official 237:f3da66175598 100 if (obj->pin == PA_4) pa4_used = 0;
mbed_official 237:f3da66175598 101 if (obj->pin == PA_5) pa5_used = 0;
mbed_official 237:f3da66175598 102
mbed_official 237:f3da66175598 103 if ((pa4_used == 0) && (pa5_used == 0)) {
mbed_official 237:f3da66175598 104 __DAC1_FORCE_RESET();
mbed_official 237:f3da66175598 105 __DAC1_RELEASE_RESET();
mbed_official 237:f3da66175598 106 __DAC1_CLK_DISABLE();
mbed_official 237:f3da66175598 107 }
mbed_official 237:f3da66175598 108
mbed_official 237:f3da66175598 109 if (obj->pin == PA_6) {
mbed_official 237:f3da66175598 110 __DAC2_FORCE_RESET();
mbed_official 237:f3da66175598 111 __DAC2_RELEASE_RESET();
mbed_official 237:f3da66175598 112 __DAC2_CLK_DISABLE();
mbed_official 237:f3da66175598 113 }
mbed_official 237:f3da66175598 114
mbed_official 237:f3da66175598 115 // Configure GPIO
mbed_official 237:f3da66175598 116 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 117 }
mbed_official 237:f3da66175598 118
mbed_official 237:f3da66175598 119 static inline void dac_write(dac_t *obj, uint16_t value)
mbed_official 237:f3da66175598 120 {
mbed_official 237:f3da66175598 121 if ((obj->pin == PA_4) || (obj->pin == PA_6)) {
mbed_official 237:f3da66175598 122 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
mbed_official 237:f3da66175598 123 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1);
mbed_official 237:f3da66175598 124 }
mbed_official 237:f3da66175598 125
mbed_official 237:f3da66175598 126 if (obj->pin == PA_5) {
mbed_official 237:f3da66175598 127 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
mbed_official 237:f3da66175598 128 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2);
mbed_official 237:f3da66175598 129 }
mbed_official 237:f3da66175598 130 }
mbed_official 237:f3da66175598 131
mbed_official 237:f3da66175598 132 static inline int dac_read(dac_t *obj)
mbed_official 237:f3da66175598 133 {
mbed_official 237:f3da66175598 134 if ((obj->pin == PA_4) || (obj->pin == PA_6)) {
mbed_official 237:f3da66175598 135 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
mbed_official 237:f3da66175598 136 } else if (obj->pin == PA_5) {
mbed_official 237:f3da66175598 137 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
mbed_official 237:f3da66175598 138 } else {
mbed_official 237:f3da66175598 139 return 0;
mbed_official 237:f3da66175598 140 }
mbed_official 237:f3da66175598 141 }
mbed_official 237:f3da66175598 142
mbed_official 237:f3da66175598 143 void analogout_write(dac_t *obj, float value)
mbed_official 237:f3da66175598 144 {
mbed_official 237:f3da66175598 145 if (value < 0.0f) {
mbed_official 237:f3da66175598 146 dac_write(obj, 0); // Min value
mbed_official 237:f3da66175598 147 } else if (value > 1.0f) {
mbed_official 237:f3da66175598 148 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 237:f3da66175598 149 } else {
mbed_official 237:f3da66175598 150 dac_write(obj, (uint16_t)(value * (float)DAC_RANGE));
mbed_official 237:f3da66175598 151 }
mbed_official 237:f3da66175598 152 }
mbed_official 237:f3da66175598 153
mbed_official 237:f3da66175598 154 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 237:f3da66175598 155 {
mbed_official 237:f3da66175598 156 if (value > (uint16_t)DAC_RANGE) {
mbed_official 237:f3da66175598 157 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 237:f3da66175598 158 } else {
mbed_official 237:f3da66175598 159 dac_write(obj, value);
mbed_official 237:f3da66175598 160 }
mbed_official 237:f3da66175598 161 }
mbed_official 237:f3da66175598 162
mbed_official 237:f3da66175598 163 float analogout_read(dac_t *obj)
mbed_official 237:f3da66175598 164 {
mbed_official 237:f3da66175598 165 uint32_t value = dac_read(obj);
mbed_official 237:f3da66175598 166 return (float)((float)value * (1.0f / (float)DAC_RANGE));
mbed_official 237:f3da66175598 167 }
mbed_official 237:f3da66175598 168
mbed_official 237:f3da66175598 169 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 237:f3da66175598 170 {
mbed_official 237:f3da66175598 171 return (uint16_t)dac_read(obj);
mbed_official 237:f3da66175598 172 }
mbed_official 237:f3da66175598 173
mbed_official 237:f3da66175598 174 #endif // DEVICE_ANALOGOUT