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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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_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