Zakaria ElQotbi / mbed-src

mbed library sources for airmote

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F7/analogout_api.c@582:a89625bcd809, 2015-07-06 (annotated)

Committer:
mbed_official
Date:
Mon Jul 06 09:00:34 2015 +0100
Revision:
582:a89625bcd809
Parent:
573:ad23fe03a082 
Synchronized with git revision 45004fb61e4af8f74f4e916318df5207fcf6076d



Full URL: https://github.com/mbedmicro/mbed/commit/45004fb61e4af8f74f4e916318df5207fcf6076d/



DISCO_F746NG - Fix several issues

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 573:ad23fe03a082 1 /* mbed Microcontroller Library
mbed_official 573:ad23fe03a082 2 * Copyright (c) 2015, STMicroelectronics
mbed_official 573:ad23fe03a082 3 * All rights reserved.
mbed_official 573:ad23fe03a082 4 *
mbed_official 573:ad23fe03a082 5 * Redistribution and use in source and binary forms, with or without
mbed_official 573:ad23fe03a082 6 * modification, are permitted provided that the following conditions are met:
mbed_official 573:ad23fe03a082 7 *
mbed_official 573:ad23fe03a082 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 573:ad23fe03a082 9 * this list of conditions and the following disclaimer.
mbed_official 573:ad23fe03a082 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 573:ad23fe03a082 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 573:ad23fe03a082 12 * and/or other materials provided with the distribution.
mbed_official 573:ad23fe03a082 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 573:ad23fe03a082 14 * may be used to endorse or promote products derived from this software
mbed_official 573:ad23fe03a082 15 * without specific prior written permission.
mbed_official 573:ad23fe03a082 16 *
mbed_official 573:ad23fe03a082 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 573:ad23fe03a082 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 573:ad23fe03a082 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 573:ad23fe03a082 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 573:ad23fe03a082 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 573:ad23fe03a082 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 573:ad23fe03a082 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 573:ad23fe03a082 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 573:ad23fe03a082 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 573:ad23fe03a082 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 573:ad23fe03a082 27 */
mbed_official 573:ad23fe03a082 28 #include "analogout_api.h"
mbed_official 573:ad23fe03a082 29
mbed_official 573:ad23fe03a082 30 #if DEVICE_ANALOGOUT
mbed_official 573:ad23fe03a082 31
mbed_official 573:ad23fe03a082 32 #include "cmsis.h"
mbed_official 573:ad23fe03a082 33 #include "pinmap.h"
mbed_official 573:ad23fe03a082 34 #include "mbed_error.h"
mbed_official 573:ad23fe03a082 35 #include "stm32f7xx_hal.h"
mbed_official 573:ad23fe03a082 36 #include "PeripheralPins.h"
mbed_official 573:ad23fe03a082 37
mbed_official 573:ad23fe03a082 38 #define RANGE_12BIT (0xFFF)
mbed_official 573:ad23fe03a082 39
mbed_official 573:ad23fe03a082 40 DAC_HandleTypeDef DacHandle;
mbed_official 573:ad23fe03a082 41 static DAC_ChannelConfTypeDef sConfig;
mbed_official 573:ad23fe03a082 42
mbed_official 573:ad23fe03a082 43 void analogout_init(dac_t *obj, PinName pin)
mbed_official 573:ad23fe03a082 44 {
mbed_official 573:ad23fe03a082 45 uint32_t channel ;
mbed_official 573:ad23fe03a082 46 HAL_StatusTypeDef status;
mbed_official 573:ad23fe03a082 47
mbed_official 573:ad23fe03a082 48 // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
mbed_official 573:ad23fe03a082 49 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 573:ad23fe03a082 50 // Get the functions (dac channel) from the pin and assign it to the object
mbed_official 573:ad23fe03a082 51 uint32_t function = pinmap_function(pin, PinMap_DAC);
mbed_official 573:ad23fe03a082 52 MBED_ASSERT(function != (uint32_t)NC);
mbed_official 573:ad23fe03a082 53 // Save the channel for the write and read functions
mbed_official 573:ad23fe03a082 54 obj->channel = STM_PIN_CHANNEL(function);
mbed_official 573:ad23fe03a082 55
mbed_official 573:ad23fe03a082 56 if (obj->dac == (DACName)NC) {
mbed_official 573:ad23fe03a082 57 error("DAC pin mapping failed");
mbed_official 573:ad23fe03a082 58 }
mbed_official 573:ad23fe03a082 59
mbed_official 573:ad23fe03a082 60 // Configure GPIO
mbed_official 573:ad23fe03a082 61 pinmap_pinout(pin, PinMap_DAC);
mbed_official 573:ad23fe03a082 62
mbed_official 573:ad23fe03a082 63 __GPIOA_CLK_ENABLE();
mbed_official 573:ad23fe03a082 64
mbed_official 573:ad23fe03a082 65 __DAC_CLK_ENABLE();
mbed_official 573:ad23fe03a082 66
mbed_official 573:ad23fe03a082 67 DacHandle.Instance = DAC;
mbed_official 573:ad23fe03a082 68
mbed_official 573:ad23fe03a082 69 status = HAL_DAC_Init(&DacHandle);
mbed_official 582:a89625bcd809 70 if (status != HAL_OK) {
mbed_official 573:ad23fe03a082 71 error("HAL_DAC_Init failed");
mbed_official 573:ad23fe03a082 72 }
mbed_official 573:ad23fe03a082 73
mbed_official 573:ad23fe03a082 74 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
mbed_official 573:ad23fe03a082 75 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
mbed_official 573:ad23fe03a082 76
mbed_official 573:ad23fe03a082 77 if (obj->channel == 1) {
mbed_official 582:a89625bcd809 78 channel = DAC_CHANNEL_1;
mbed_official 573:ad23fe03a082 79 } else {
mbed_official 573:ad23fe03a082 80 channel = DAC_CHANNEL_2;
mbed_official 573:ad23fe03a082 81 }
mbed_official 573:ad23fe03a082 82
mbed_official 573:ad23fe03a082 83 if (HAL_DAC_ConfigChannel(&DacHandle, &sConfig, channel) != HAL_OK) {
mbed_official 573:ad23fe03a082 84 error("HAL_DAC_ConfigChannel failed");
mbed_official 573:ad23fe03a082 85 }
mbed_official 573:ad23fe03a082 86
mbed_official 573:ad23fe03a082 87 if (HAL_DAC_Start(&DacHandle, channel) != HAL_OK) {
mbed_official 573:ad23fe03a082 88 error("HAL_DAC_Start failed");
mbed_official 573:ad23fe03a082 89 }
mbed_official 573:ad23fe03a082 90
mbed_official 573:ad23fe03a082 91 if (HAL_DAC_SetValue(&DacHandle, channel, DAC_ALIGN_12B_R, 0x000) != HAL_OK) {
mbed_official 573:ad23fe03a082 92 error("HAL_DAC_SetValue failed");
mbed_official 573:ad23fe03a082 93 }
mbed_official 573:ad23fe03a082 94
mbed_official 573:ad23fe03a082 95 }
mbed_official 573:ad23fe03a082 96
mbed_official 573:ad23fe03a082 97 void analogout_free(dac_t *obj)
mbed_official 573:ad23fe03a082 98 {
mbed_official 573:ad23fe03a082 99 }
mbed_official 573:ad23fe03a082 100
mbed_official 573:ad23fe03a082 101 static inline void dac_write(dac_t *obj, uint16_t value)
mbed_official 573:ad23fe03a082 102 {
mbed_official 573:ad23fe03a082 103 HAL_StatusTypeDef status = HAL_ERROR;
mbed_official 573:ad23fe03a082 104
mbed_official 573:ad23fe03a082 105 if (obj->channel == 1) {
mbed_official 573:ad23fe03a082 106 status = HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
mbed_official 573:ad23fe03a082 107 } else if (obj->channel == 2) {
mbed_official 573:ad23fe03a082 108 status = HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
mbed_official 573:ad23fe03a082 109 }
mbed_official 573:ad23fe03a082 110
mbed_official 582:a89625bcd809 111 if (status != HAL_OK) {
mbed_official 573:ad23fe03a082 112 error("DAC pin mapping failed");
mbed_official 573:ad23fe03a082 113 }
mbed_official 573:ad23fe03a082 114 }
mbed_official 573:ad23fe03a082 115
mbed_official 573:ad23fe03a082 116 static inline int dac_read(dac_t *obj)
mbed_official 573:ad23fe03a082 117 {
mbed_official 573:ad23fe03a082 118 if (obj->channel == 1) {
mbed_official 573:ad23fe03a082 119 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
mbed_official 573:ad23fe03a082 120 } else if (obj->channel == 2) {
mbed_official 573:ad23fe03a082 121 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
mbed_official 573:ad23fe03a082 122 }
mbed_official 582:a89625bcd809 123 return 0; /* Just silented warning */
mbed_official 573:ad23fe03a082 124 }
mbed_official 573:ad23fe03a082 125
mbed_official 573:ad23fe03a082 126 void analogout_write(dac_t *obj, float value)
mbed_official 573:ad23fe03a082 127 {
mbed_official 573:ad23fe03a082 128 if (value < 0.0f) {
mbed_official 573:ad23fe03a082 129 dac_write(obj, 0); // Min value
mbed_official 573:ad23fe03a082 130 } else if (value > 1.0f) {
mbed_official 573:ad23fe03a082 131 dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
mbed_official 573:ad23fe03a082 132 } else {
mbed_official 573:ad23fe03a082 133 dac_write(obj, (uint16_t)(value * (float)RANGE_12BIT));
mbed_official 573:ad23fe03a082 134 }
mbed_official 573:ad23fe03a082 135 }
mbed_official 573:ad23fe03a082 136
mbed_official 573:ad23fe03a082 137 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 573:ad23fe03a082 138 {
mbed_official 573:ad23fe03a082 139 if (value > (uint16_t)RANGE_12BIT) {
mbed_official 573:ad23fe03a082 140 value = (uint16_t)RANGE_12BIT; // Max value
mbed_official 573:ad23fe03a082 141 }
mbed_official 573:ad23fe03a082 142
mbed_official 573:ad23fe03a082 143 dac_write(obj, value);
mbed_official 573:ad23fe03a082 144 }
mbed_official 573:ad23fe03a082 145
mbed_official 573:ad23fe03a082 146 float analogout_read(dac_t *obj)
mbed_official 573:ad23fe03a082 147 {
mbed_official 573:ad23fe03a082 148
mbed_official 573:ad23fe03a082 149 uint32_t value = dac_read(obj);
mbed_official 573:ad23fe03a082 150 return (float)value * (1.0f / (float)RANGE_12BIT);
mbed_official 573:ad23fe03a082 151 }
mbed_official 573:ad23fe03a082 152
mbed_official 573:ad23fe03a082 153 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 573:ad23fe03a082 154 {
mbed_official 573:ad23fe03a082 155 return (uint16_t)dac_read(obj);
mbed_official 573:ad23fe03a082 156 }
mbed_official 573:ad23fe03a082 157
mbed_official 573:ad23fe03a082 158 #endif // DEVICE_ANALOGOUT