Renesas / mbed-src_GR-PEACH_rev_b

mbed library sources for GR-PEACH rev.B.

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3/analogout_api.c@514:cf59050bad8e, 2015-04-15 (annotated)

Committer:
RyoheiHagimoto
Date:
Wed Apr 15 01:34:29 2015 +0000
Revision:
514:cf59050bad8e
Parent:
508:4f5903e025e6 
mbed library sources for GR-PEACH rev.B.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 508:4f5903e025e6 1 /* mbed Microcontroller Library
mbed_official 508:4f5903e025e6 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 508:4f5903e025e6 3 * All rights reserved.
mbed_official 508:4f5903e025e6 4 *
mbed_official 508:4f5903e025e6 5 * Redistribution and use in source and binary forms, with or without
mbed_official 508:4f5903e025e6 6 * modification, are permitted provided that the following conditions are met:
mbed_official 508:4f5903e025e6 7 *
mbed_official 508:4f5903e025e6 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 508:4f5903e025e6 9 * this list of conditions and the following disclaimer.
mbed_official 508:4f5903e025e6 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 508:4f5903e025e6 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 508:4f5903e025e6 12 * and/or other materials provided with the distribution.
mbed_official 508:4f5903e025e6 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 508:4f5903e025e6 14 * may be used to endorse or promote products derived from this software
mbed_official 508:4f5903e025e6 15 * without specific prior written permission.
mbed_official 508:4f5903e025e6 16 *
mbed_official 508:4f5903e025e6 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 508:4f5903e025e6 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 508:4f5903e025e6 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 508:4f5903e025e6 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 508:4f5903e025e6 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 508:4f5903e025e6 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 508:4f5903e025e6 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 508:4f5903e025e6 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 508:4f5903e025e6 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 508:4f5903e025e6 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 508:4f5903e025e6 27 */
mbed_official 508:4f5903e025e6 28 #include "mbed_assert.h"
mbed_official 508:4f5903e025e6 29 #include "analogout_api.h"
mbed_official 508:4f5903e025e6 30
mbed_official 508:4f5903e025e6 31 #if DEVICE_ANALOGOUT
mbed_official 508:4f5903e025e6 32
mbed_official 508:4f5903e025e6 33 #include "cmsis.h"
mbed_official 508:4f5903e025e6 34 #include "pinmap.h"
mbed_official 508:4f5903e025e6 35 #include "mbed_error.h"
mbed_official 508:4f5903e025e6 36 #include "PeripheralPins.h"
mbed_official 508:4f5903e025e6 37
mbed_official 508:4f5903e025e6 38 #define DAC_RANGE (0xFFF) // 12 bits
mbed_official 508:4f5903e025e6 39
mbed_official 508:4f5903e025e6 40 static DAC_HandleTypeDef DacHandle;
mbed_official 508:4f5903e025e6 41
mbed_official 508:4f5903e025e6 42 // These variables are used for the "free" function
mbed_official 508:4f5903e025e6 43 static int pa4_used = 0;
mbed_official 508:4f5903e025e6 44 static int pa5_used = 0;
mbed_official 508:4f5903e025e6 45
mbed_official 508:4f5903e025e6 46 void analogout_init(dac_t *obj, PinName pin)
mbed_official 508:4f5903e025e6 47 {
mbed_official 508:4f5903e025e6 48 DAC_ChannelConfTypeDef sConfig;
mbed_official 508:4f5903e025e6 49
mbed_official 508:4f5903e025e6 50 // Get the peripheral name from the pin and assign it to the object
mbed_official 508:4f5903e025e6 51 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 508:4f5903e025e6 52 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 508:4f5903e025e6 53
mbed_official 508:4f5903e025e6 54 // Configure GPIO
mbed_official 508:4f5903e025e6 55 pinmap_pinout(pin, PinMap_DAC);
mbed_official 508:4f5903e025e6 56
mbed_official 508:4f5903e025e6 57 // Save the pin for future use
mbed_official 508:4f5903e025e6 58 obj->pin = pin;
mbed_official 508:4f5903e025e6 59
mbed_official 508:4f5903e025e6 60 // Enable DAC clock
mbed_official 508:4f5903e025e6 61 if (obj->dac == DAC_1) {
mbed_official 508:4f5903e025e6 62 __DAC1_CLK_ENABLE();
mbed_official 508:4f5903e025e6 63 }
mbed_official 508:4f5903e025e6 64 #if defined(__DAC2_FORCE_RESET)
mbed_official 508:4f5903e025e6 65 if (obj->dac == DAC_2) {
mbed_official 508:4f5903e025e6 66 __DAC2_CLK_ENABLE();
mbed_official 508:4f5903e025e6 67 }
mbed_official 508:4f5903e025e6 68 #endif
mbed_official 508:4f5903e025e6 69
mbed_official 508:4f5903e025e6 70 // Configure DAC
mbed_official 508:4f5903e025e6 71 DacHandle.Instance = (DAC_TypeDef *)(obj->dac);
mbed_official 508:4f5903e025e6 72
mbed_official 508:4f5903e025e6 73 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
mbed_official 508:4f5903e025e6 74 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
mbed_official 508:4f5903e025e6 75
mbed_official 508:4f5903e025e6 76 if (pin == PA_4) {
mbed_official 508:4f5903e025e6 77 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 508:4f5903e025e6 78 pa4_used = 1;
mbed_official 508:4f5903e025e6 79 }
mbed_official 508:4f5903e025e6 80
mbed_official 508:4f5903e025e6 81 #if defined(DAC_CHANNEL_2)
mbed_official 508:4f5903e025e6 82 if (pin == PA_5) {
mbed_official 508:4f5903e025e6 83 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2);
mbed_official 508:4f5903e025e6 84 pa5_used = 1;
mbed_official 508:4f5903e025e6 85 }
mbed_official 508:4f5903e025e6 86 #endif
mbed_official 508:4f5903e025e6 87
mbed_official 508:4f5903e025e6 88 if (pin == PA_6) {
mbed_official 508:4f5903e025e6 89 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 508:4f5903e025e6 90 }
mbed_official 508:4f5903e025e6 91
mbed_official 508:4f5903e025e6 92 analogout_write_u16(obj, 0);
mbed_official 508:4f5903e025e6 93 }
mbed_official 508:4f5903e025e6 94
mbed_official 508:4f5903e025e6 95 void analogout_free(dac_t *obj)
mbed_official 508:4f5903e025e6 96 {
mbed_official 508:4f5903e025e6 97 // Reset DAC and disable clock
mbed_official 508:4f5903e025e6 98 if (obj->pin == PA_4) pa4_used = 0;
mbed_official 508:4f5903e025e6 99 if (obj->pin == PA_5) pa5_used = 0;
mbed_official 508:4f5903e025e6 100
mbed_official 508:4f5903e025e6 101 if ((pa4_used == 0) && (pa5_used == 0)) {
mbed_official 508:4f5903e025e6 102 __DAC1_FORCE_RESET();
mbed_official 508:4f5903e025e6 103 __DAC1_RELEASE_RESET();
mbed_official 508:4f5903e025e6 104 __DAC1_CLK_DISABLE();
mbed_official 508:4f5903e025e6 105 }
mbed_official 508:4f5903e025e6 106
mbed_official 508:4f5903e025e6 107 #if defined(__DAC2_FORCE_RESET)
mbed_official 508:4f5903e025e6 108 if (obj->pin == PA_6) {
mbed_official 508:4f5903e025e6 109 __DAC2_FORCE_RESET();
mbed_official 508:4f5903e025e6 110 __DAC2_RELEASE_RESET();
mbed_official 508:4f5903e025e6 111 __DAC2_CLK_DISABLE();
mbed_official 508:4f5903e025e6 112 }
mbed_official 508:4f5903e025e6 113 #endif
mbed_official 508:4f5903e025e6 114
mbed_official 508:4f5903e025e6 115 // Configure GPIO
mbed_official 508:4f5903e025e6 116 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 508:4f5903e025e6 117 }
mbed_official 508:4f5903e025e6 118
mbed_official 508:4f5903e025e6 119 static inline void dac_write(dac_t *obj, uint16_t value)
mbed_official 508:4f5903e025e6 120 {
mbed_official 508:4f5903e025e6 121 if ((obj->pin == PA_4) || (obj->pin == PA_6)) {
mbed_official 508:4f5903e025e6 122 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
mbed_official 508:4f5903e025e6 123 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1);
mbed_official 508:4f5903e025e6 124 }
mbed_official 508:4f5903e025e6 125
mbed_official 508:4f5903e025e6 126 #if defined(DAC_CHANNEL_2)
mbed_official 508:4f5903e025e6 127 if (obj->pin == PA_5) {
mbed_official 508:4f5903e025e6 128 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
mbed_official 508:4f5903e025e6 129 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2);
mbed_official 508:4f5903e025e6 130 }
mbed_official 508:4f5903e025e6 131 #endif
mbed_official 508:4f5903e025e6 132 }
mbed_official 508:4f5903e025e6 133
mbed_official 508:4f5903e025e6 134 static inline int dac_read(dac_t *obj)
mbed_official 508:4f5903e025e6 135 {
mbed_official 508:4f5903e025e6 136 if ((obj->pin == PA_4) || (obj->pin == PA_6)) {
mbed_official 508:4f5903e025e6 137 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
mbed_official 508:4f5903e025e6 138 #if defined(DAC_CHANNEL_2)
mbed_official 508:4f5903e025e6 139 } else if (obj->pin == PA_5) {
mbed_official 508:4f5903e025e6 140 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
mbed_official 508:4f5903e025e6 141 #endif
mbed_official 508:4f5903e025e6 142 } else {
mbed_official 508:4f5903e025e6 143 return 0;
mbed_official 508:4f5903e025e6 144 }
mbed_official 508:4f5903e025e6 145 }
mbed_official 508:4f5903e025e6 146
mbed_official 508:4f5903e025e6 147 void analogout_write(dac_t *obj, float value)
mbed_official 508:4f5903e025e6 148 {
mbed_official 508:4f5903e025e6 149 if (value < 0.0f) {
mbed_official 508:4f5903e025e6 150 dac_write(obj, 0); // Min value
mbed_official 508:4f5903e025e6 151 } else if (value > 1.0f) {
mbed_official 508:4f5903e025e6 152 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 508:4f5903e025e6 153 } else {
mbed_official 508:4f5903e025e6 154 dac_write(obj, (uint16_t)(value * (float)DAC_RANGE));
mbed_official 508:4f5903e025e6 155 }
mbed_official 508:4f5903e025e6 156 }
mbed_official 508:4f5903e025e6 157
mbed_official 508:4f5903e025e6 158 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 508:4f5903e025e6 159 {
mbed_official 508:4f5903e025e6 160 if (value > (uint16_t)DAC_RANGE) {
mbed_official 508:4f5903e025e6 161 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 508:4f5903e025e6 162 } else {
mbed_official 508:4f5903e025e6 163 dac_write(obj, value);
mbed_official 508:4f5903e025e6 164 }
mbed_official 508:4f5903e025e6 165 }
mbed_official 508:4f5903e025e6 166
mbed_official 508:4f5903e025e6 167 float analogout_read(dac_t *obj)
mbed_official 508:4f5903e025e6 168 {
mbed_official 508:4f5903e025e6 169 uint32_t value = dac_read(obj);
mbed_official 508:4f5903e025e6 170 return (float)((float)value * (1.0f / (float)DAC_RANGE));
mbed_official 508:4f5903e025e6 171 }
mbed_official 508:4f5903e025e6 172
mbed_official 508:4f5903e025e6 173 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 508:4f5903e025e6 174 {
mbed_official 508:4f5903e025e6 175 return (uint16_t)dac_read(obj);
mbed_official 508:4f5903e025e6 176 }
mbed_official 508:4f5903e025e6 177
mbed_official 508:4f5903e025e6 178 #endif // DEVICE_ANALOGOUT