Krzysztof Sitko / mbed-dev-STM32F031K6

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/hal/TARGET_STM/TARGET_STM32F7/analogout_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
8:69ce7aaad4c4
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2015, STMicroelectronics
bogdanm 0:9b334a45a8ff 3 * All rights reserved.
bogdanm 0:9b334a45a8ff 4 *
bogdanm 0:9b334a45a8ff 5 * Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 6 * modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 9 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 11 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 12 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 14 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 15 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 16 *
bogdanm 0:9b334a45a8ff 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 27 */
bogdanm 0:9b334a45a8ff 28 #include "analogout_api.h"
bogdanm 0:9b334a45a8ff 29
bogdanm 0:9b334a45a8ff 30 #if DEVICE_ANALOGOUT
bogdanm 0:9b334a45a8ff 31
bogdanm 0:9b334a45a8ff 32 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 33 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 34 #include "mbed_error.h"
bogdanm 0:9b334a45a8ff 35 #include "stm32f7xx_hal.h"
bogdanm 0:9b334a45a8ff 36 #include "PeripheralPins.h"
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 #define RANGE_12BIT (0xFFF)
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 DAC_HandleTypeDef DacHandle;
bogdanm 0:9b334a45a8ff 41 static DAC_ChannelConfTypeDef sConfig;
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 void analogout_init(dac_t *obj, PinName pin)
bogdanm 0:9b334a45a8ff 44 {
bogdanm 0:9b334a45a8ff 45 uint32_t channel ;
bogdanm 0:9b334a45a8ff 46 HAL_StatusTypeDef status;
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 49 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
bogdanm 0:9b334a45a8ff 50 // Get the functions (dac channel) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 51 uint32_t function = pinmap_function(pin, PinMap_DAC);
bogdanm 0:9b334a45a8ff 52 MBED_ASSERT(function != (uint32_t)NC);
bogdanm 0:9b334a45a8ff 53 // Save the channel for the write and read functions
bogdanm 0:9b334a45a8ff 54 obj->channel = STM_PIN_CHANNEL(function);
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 if (obj->dac == (DACName)NC) {
bogdanm 0:9b334a45a8ff 57 error("DAC pin mapping failed");
bogdanm 0:9b334a45a8ff 58 }
bogdanm 0:9b334a45a8ff 59
bogdanm 0:9b334a45a8ff 60 // Configure GPIO
bogdanm 0:9b334a45a8ff 61 pinmap_pinout(pin, PinMap_DAC);
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 __GPIOA_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 __DAC_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 DacHandle.Instance = DAC;
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 status = HAL_DAC_Init(&DacHandle);
bogdanm 0:9b334a45a8ff 70 if (status != HAL_OK) {
bogdanm 0:9b334a45a8ff 71 error("HAL_DAC_Init failed");
bogdanm 0:9b334a45a8ff 72 }
bogdanm 0:9b334a45a8ff 73
bogdanm 0:9b334a45a8ff 74 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
bogdanm 0:9b334a45a8ff 75 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77 if (obj->channel == 1) {
bogdanm 0:9b334a45a8ff 78 channel = DAC_CHANNEL_1;
bogdanm 0:9b334a45a8ff 79 } else {
bogdanm 0:9b334a45a8ff 80 channel = DAC_CHANNEL_2;
bogdanm 0:9b334a45a8ff 81 }
bogdanm 0:9b334a45a8ff 82
bogdanm 0:9b334a45a8ff 83 if (HAL_DAC_ConfigChannel(&DacHandle, &sConfig, channel) != HAL_OK) {
bogdanm 0:9b334a45a8ff 84 error("HAL_DAC_ConfigChannel failed");
bogdanm 0:9b334a45a8ff 85 }
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 if (HAL_DAC_Start(&DacHandle, channel) != HAL_OK) {
bogdanm 0:9b334a45a8ff 88 error("HAL_DAC_Start failed");
bogdanm 0:9b334a45a8ff 89 }
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 if (HAL_DAC_SetValue(&DacHandle, channel, DAC_ALIGN_12B_R, 0x000) != HAL_OK) {
bogdanm 0:9b334a45a8ff 92 error("HAL_DAC_SetValue failed");
bogdanm 0:9b334a45a8ff 93 }
bogdanm 0:9b334a45a8ff 94
bogdanm 0:9b334a45a8ff 95 }
bogdanm 0:9b334a45a8ff 96
bogdanm 0:9b334a45a8ff 97 void analogout_free(dac_t *obj)
bogdanm 0:9b334a45a8ff 98 {
bogdanm 0:9b334a45a8ff 99 }
bogdanm 0:9b334a45a8ff 100
bogdanm 0:9b334a45a8ff 101 static inline void dac_write(dac_t *obj, uint16_t value)
bogdanm 0:9b334a45a8ff 102 {
bogdanm 0:9b334a45a8ff 103 HAL_StatusTypeDef status = HAL_ERROR;
bogdanm 0:9b334a45a8ff 104
bogdanm 0:9b334a45a8ff 105 if (obj->channel == 1) {
bogdanm 0:9b334a45a8ff 106 status = HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
bogdanm 0:9b334a45a8ff 107 } else if (obj->channel == 2) {
bogdanm 0:9b334a45a8ff 108 status = HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
bogdanm 0:9b334a45a8ff 109 }
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 if (status != HAL_OK) {
bogdanm 0:9b334a45a8ff 112 error("DAC pin mapping failed");
bogdanm 0:9b334a45a8ff 113 }
bogdanm 0:9b334a45a8ff 114 }
bogdanm 0:9b334a45a8ff 115
bogdanm 0:9b334a45a8ff 116 static inline int dac_read(dac_t *obj)
bogdanm 0:9b334a45a8ff 117 {
bogdanm 0:9b334a45a8ff 118 if (obj->channel == 1) {
bogdanm 0:9b334a45a8ff 119 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
bogdanm 0:9b334a45a8ff 120 } else if (obj->channel == 2) {
bogdanm 0:9b334a45a8ff 121 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
bogdanm 0:9b334a45a8ff 122 }
bogdanm 0:9b334a45a8ff 123 return 0; /* Just silented warning */
bogdanm 0:9b334a45a8ff 124 }
bogdanm 0:9b334a45a8ff 125
bogdanm 0:9b334a45a8ff 126 void analogout_write(dac_t *obj, float value)
bogdanm 0:9b334a45a8ff 127 {
bogdanm 0:9b334a45a8ff 128 if (value < 0.0f) {
bogdanm 0:9b334a45a8ff 129 dac_write(obj, 0); // Min value
bogdanm 0:9b334a45a8ff 130 } else if (value > 1.0f) {
bogdanm 0:9b334a45a8ff 131 dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
bogdanm 0:9b334a45a8ff 132 } else {
bogdanm 0:9b334a45a8ff 133 dac_write(obj, (uint16_t)(value * (float)RANGE_12BIT));
bogdanm 0:9b334a45a8ff 134 }
bogdanm 0:9b334a45a8ff 135 }
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 void analogout_write_u16(dac_t *obj, uint16_t value)
bogdanm 0:9b334a45a8ff 138 {
bogdanm 0:9b334a45a8ff 139 if (value > (uint16_t)RANGE_12BIT) {
bogdanm 0:9b334a45a8ff 140 value = (uint16_t)RANGE_12BIT; // Max value
bogdanm 0:9b334a45a8ff 141 }
bogdanm 0:9b334a45a8ff 142
bogdanm 0:9b334a45a8ff 143 dac_write(obj, value);
bogdanm 0:9b334a45a8ff 144 }
bogdanm 0:9b334a45a8ff 145
bogdanm 0:9b334a45a8ff 146 float analogout_read(dac_t *obj)
bogdanm 0:9b334a45a8ff 147 {
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 uint32_t value = dac_read(obj);
bogdanm 0:9b334a45a8ff 150 return (float)value * (1.0f / (float)RANGE_12BIT);
bogdanm 0:9b334a45a8ff 151 }
bogdanm 0:9b334a45a8ff 152
bogdanm 0:9b334a45a8ff 153 uint16_t analogout_read_u16(dac_t *obj)
bogdanm 0:9b334a45a8ff 154 {
bogdanm 0:9b334a45a8ff 155 return (uint16_t)dac_read(obj);
bogdanm 0:9b334a45a8ff 156 }
bogdanm 0:9b334a45a8ff 157
bogdanm 0:9b334a45a8ff 158 #endif // DEVICE_ANALOGOUT