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_STM32L0/analogout_api.c@491:b97b6b70036c, 2015-03-16 (annotated)

Committer:
mbed_official
Date:
Mon Mar 16 09:45:08 2015 +0000
Revision:
491:b97b6b70036c
Parent:
targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/analogout_api.c@489:119543c9f674 
Synchronized with git revision cc6830bf9eef1149fb6a6ebe64e20df7e6afc028



Full URL: https://github.com/mbedmicro/mbed/commit/cc6830bf9eef1149fb6a6ebe64e20df7e6afc028/



NUCLEO_L053R8/DISCO_L053C8 - hal files refactoring

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /* mbed Microcontroller Library
mbed_official 181:a4cbdfbbd2f4 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 181:a4cbdfbbd2f4 3 * All rights reserved.
mbed_official 181:a4cbdfbbd2f4 4 *
mbed_official 181:a4cbdfbbd2f4 5 * Redistribution and use in source and binary forms, with or without
mbed_official 181:a4cbdfbbd2f4 6 * modification, are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 7 *
mbed_official 181:a4cbdfbbd2f4 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 9 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 12 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 14 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 15 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 16 *
mbed_official 181:a4cbdfbbd2f4 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 27 */
mbed_official 227:7bd0639b8911 28 #include "mbed_assert.h"
mbed_official 181:a4cbdfbbd2f4 29 #include "analogout_api.h"
mbed_official 181:a4cbdfbbd2f4 30
mbed_official 181:a4cbdfbbd2f4 31 #if DEVICE_ANALOGOUT
mbed_official 181:a4cbdfbbd2f4 32
mbed_official 181:a4cbdfbbd2f4 33 #include "cmsis.h"
mbed_official 181:a4cbdfbbd2f4 34 #include "pinmap.h"
mbed_official 285:31249416b6f9 35 #include "mbed_error.h"
mbed_official 414:4ec4c5b614b0 36 #include "PeripheralPins.h"
mbed_official 181:a4cbdfbbd2f4 37
mbed_official 181:a4cbdfbbd2f4 38 #define DAC_RANGE (0xFFF) // 12 bits
mbed_official 181:a4cbdfbbd2f4 39
mbed_official 181:a4cbdfbbd2f4 40 static DAC_HandleTypeDef DacHandle;
mbed_official 181:a4cbdfbbd2f4 41
mbed_official 489:119543c9f674 42 // These variables are used for the "free" function
mbed_official 489:119543c9f674 43 static int pa4_used = 0;
mbed_official 489:119543c9f674 44 static int pa5_used = 0;
mbed_official 489:119543c9f674 45
mbed_official 402:09075a3b15e3 46 void analogout_init(dac_t *obj, PinName pin)
mbed_official 402:09075a3b15e3 47 {
mbed_official 181:a4cbdfbbd2f4 48 DAC_ChannelConfTypeDef sConfig;
mbed_official 181:a4cbdfbbd2f4 49
mbed_official 489:119543c9f674 50 // Get the peripheral name from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 51 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 227:7bd0639b8911 52 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 181:a4cbdfbbd2f4 53
mbed_official 181:a4cbdfbbd2f4 54 // Configure GPIO
mbed_official 181:a4cbdfbbd2f4 55 pinmap_pinout(pin, PinMap_DAC);
mbed_official 181:a4cbdfbbd2f4 56
mbed_official 489:119543c9f674 57 // Save the pin for future use
mbed_official 217:d0ccc61c1fd4 58 obj->pin = pin;
mbed_official 181:a4cbdfbbd2f4 59
mbed_official 181:a4cbdfbbd2f4 60 // Enable DAC clock
mbed_official 181:a4cbdfbbd2f4 61 __DAC_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 62
mbed_official 181:a4cbdfbbd2f4 63 // Configure DAC
mbed_official 489:119543c9f674 64 DacHandle.Instance = DAC;
mbed_official 489:119543c9f674 65
mbed_official 181:a4cbdfbbd2f4 66 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
mbed_official 181:a4cbdfbbd2f4 67 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
mbed_official 181:a4cbdfbbd2f4 68
mbed_official 489:119543c9f674 69 if (pin == PA_4) {
mbed_official 489:119543c9f674 70 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 489:119543c9f674 71 pa4_used = 1;
mbed_official 489:119543c9f674 72 }
mbed_official 489:119543c9f674 73
mbed_official 489:119543c9f674 74 #if defined(DAC_CHANNEL_2)
mbed_official 489:119543c9f674 75 if (pin == PA_5) {
mbed_official 489:119543c9f674 76 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2);
mbed_official 489:119543c9f674 77 pa5_used = 1;
mbed_official 489:119543c9f674 78 }
mbed_official 489:119543c9f674 79 #endif
mbed_official 181:a4cbdfbbd2f4 80
mbed_official 181:a4cbdfbbd2f4 81 analogout_write_u16(obj, 0);
mbed_official 181:a4cbdfbbd2f4 82 }
mbed_official 181:a4cbdfbbd2f4 83
mbed_official 402:09075a3b15e3 84 void analogout_free(dac_t *obj)
mbed_official 402:09075a3b15e3 85 {
mbed_official 201:fa203361dc70 86 // Reset DAC and disable clock
mbed_official 489:119543c9f674 87 if (obj->pin == PA_4) pa4_used = 0;
mbed_official 489:119543c9f674 88 if (obj->pin == PA_5) pa5_used = 0;
mbed_official 489:119543c9f674 89
mbed_official 489:119543c9f674 90 if ((pa4_used == 0) && (pa5_used == 0)) {
mbed_official 489:119543c9f674 91 __DAC_FORCE_RESET();
mbed_official 489:119543c9f674 92 __DAC_RELEASE_RESET();
mbed_official 489:119543c9f674 93 __DAC_CLK_DISABLE();
mbed_official 489:119543c9f674 94 }
mbed_official 201:fa203361dc70 95
mbed_official 181:a4cbdfbbd2f4 96 // Configure GPIO
mbed_official 217:d0ccc61c1fd4 97 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 181:a4cbdfbbd2f4 98 }
mbed_official 181:a4cbdfbbd2f4 99
mbed_official 402:09075a3b15e3 100 static inline void dac_write(dac_t *obj, uint16_t value)
mbed_official 402:09075a3b15e3 101 {
mbed_official 489:119543c9f674 102 if (obj->pin == PA_4) {
mbed_official 489:119543c9f674 103 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
mbed_official 489:119543c9f674 104 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1);
mbed_official 489:119543c9f674 105 }
mbed_official 489:119543c9f674 106
mbed_official 489:119543c9f674 107 #if defined(DAC_CHANNEL_2)
mbed_official 489:119543c9f674 108 if (obj->pin == PA_5) {
mbed_official 489:119543c9f674 109 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
mbed_official 489:119543c9f674 110 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2);
mbed_official 489:119543c9f674 111 }
mbed_official 489:119543c9f674 112 #endif
mbed_official 181:a4cbdfbbd2f4 113 }
mbed_official 181:a4cbdfbbd2f4 114
mbed_official 402:09075a3b15e3 115 static inline int dac_read(dac_t *obj)
mbed_official 402:09075a3b15e3 116 {
mbed_official 489:119543c9f674 117 if (obj->pin == PA_4) {
mbed_official 489:119543c9f674 118 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
mbed_official 489:119543c9f674 119 }
mbed_official 489:119543c9f674 120 #if defined(DAC_CHANNEL_2)
mbed_official 489:119543c9f674 121 else if (obj->pin == PA_5) {
mbed_official 489:119543c9f674 122 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
mbed_official 489:119543c9f674 123 }
mbed_official 489:119543c9f674 124 #endif
mbed_official 489:119543c9f674 125 else {
mbed_official 489:119543c9f674 126 return 0;
mbed_official 489:119543c9f674 127 }
mbed_official 181:a4cbdfbbd2f4 128 }
mbed_official 181:a4cbdfbbd2f4 129
mbed_official 402:09075a3b15e3 130 void analogout_write(dac_t *obj, float value)
mbed_official 402:09075a3b15e3 131 {
mbed_official 181:a4cbdfbbd2f4 132 if (value < 0.0f) {
mbed_official 181:a4cbdfbbd2f4 133 dac_write(obj, 0); // Min value
mbed_official 181:a4cbdfbbd2f4 134 } else if (value > 1.0f) {
mbed_official 181:a4cbdfbbd2f4 135 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 181:a4cbdfbbd2f4 136 } else {
mbed_official 181:a4cbdfbbd2f4 137 dac_write(obj, (uint16_t)(value * (float)DAC_RANGE));
mbed_official 181:a4cbdfbbd2f4 138 }
mbed_official 181:a4cbdfbbd2f4 139 }
mbed_official 181:a4cbdfbbd2f4 140
mbed_official 402:09075a3b15e3 141 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 402:09075a3b15e3 142 {
mbed_official 181:a4cbdfbbd2f4 143 if (value > (uint16_t)DAC_RANGE) {
mbed_official 181:a4cbdfbbd2f4 144 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 181:a4cbdfbbd2f4 145 } else {
mbed_official 181:a4cbdfbbd2f4 146 dac_write(obj, value);
mbed_official 181:a4cbdfbbd2f4 147 }
mbed_official 181:a4cbdfbbd2f4 148 }
mbed_official 181:a4cbdfbbd2f4 149
mbed_official 402:09075a3b15e3 150 float analogout_read(dac_t *obj)
mbed_official 402:09075a3b15e3 151 {
mbed_official 181:a4cbdfbbd2f4 152 uint32_t value = dac_read(obj);
mbed_official 181:a4cbdfbbd2f4 153 return (float)((float)value * (1.0f / (float)DAC_RANGE));
mbed_official 181:a4cbdfbbd2f4 154 }
mbed_official 181:a4cbdfbbd2f4 155
mbed_official 402:09075a3b15e3 156 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 402:09075a3b15e3 157 {
mbed_official 181:a4cbdfbbd2f4 158 return (uint16_t)dac_read(obj);
mbed_official 181:a4cbdfbbd2f4 159 }
mbed_official 181:a4cbdfbbd2f4 160
mbed_official 181:a4cbdfbbd2f4 161 #endif // DEVICE_ANALOGOUT