shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/analogin_api.c@216:577900467c9e, 2014-05-27 (annotated)

Committer:
mbed_official
Date:
Tue May 27 10:00:08 2014 +0100
Revision:
216:577900467c9e
Parent:
171:3d240fda1f07
Child:
227:7bd0639b8911
Synchronized with git revision 1cdfe81b13a631cf282176dd176df20a6ebbc297



Full URL: https://github.com/mbedmicro/mbed/commit/1cdfe81b13a631cf282176dd176df20a6ebbc297/



[NUCLEO_xxx] Update xxx_free() functions + typo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 3 * All rights reserved.
mbed_official 76:aeb1df146756 4 *
mbed_official 76:aeb1df146756 5 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 6 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 7 *
mbed_official 76:aeb1df146756 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 9 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 12 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 14 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 15 * without specific prior written permission.
mbed_official 76:aeb1df146756 16 *
mbed_official 76:aeb1df146756 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 27 */
mbed_official 76:aeb1df146756 28 #include "analogin_api.h"
mbed_official 76:aeb1df146756 29
mbed_official 76:aeb1df146756 30 #if DEVICE_ANALOGIN
mbed_official 76:aeb1df146756 31
mbed_official 76:aeb1df146756 32 #include "cmsis.h"
mbed_official 76:aeb1df146756 33 #include "pinmap.h"
mbed_official 76:aeb1df146756 34 #include "error.h"
mbed_official 166:cb4253f91ada 35 #include "wait_api.h"
mbed_official 76:aeb1df146756 36
mbed_official 76:aeb1df146756 37 static const PinMap PinMap_ADC[] = {
mbed_official 76:aeb1df146756 38 {PA_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN0
mbed_official 76:aeb1df146756 39 {PA_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN1
mbed_official 171:3d240fda1f07 40 {PA_2, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN2
mbed_official 171:3d240fda1f07 41 {PA_3, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN3
mbed_official 76:aeb1df146756 42 {PA_4, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN4
mbed_official 171:3d240fda1f07 43 {PA_5, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN5
mbed_official 171:3d240fda1f07 44 {PA_6, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN6
mbed_official 171:3d240fda1f07 45 {PA_7, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN7
mbed_official 76:aeb1df146756 46 {PB_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN8
mbed_official 171:3d240fda1f07 47 {PB_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN9
mbed_official 171:3d240fda1f07 48 {PC_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN10
mbed_official 76:aeb1df146756 49 {PC_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN11
mbed_official 171:3d240fda1f07 50 {PC_2, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN12
mbed_official 171:3d240fda1f07 51 {PC_3, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN13
mbed_official 171:3d240fda1f07 52 {PC_4, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN14
mbed_official 171:3d240fda1f07 53 {PC_5, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN15
mbed_official 76:aeb1df146756 54 {NC, NC, 0}
mbed_official 76:aeb1df146756 55 };
mbed_official 76:aeb1df146756 56
mbed_official 76:aeb1df146756 57 int adc_inited = 0;
mbed_official 76:aeb1df146756 58
mbed_official 76:aeb1df146756 59 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 216:577900467c9e 60
mbed_official 76:aeb1df146756 61 ADC_TypeDef *adc;
mbed_official 76:aeb1df146756 62 ADC_InitTypeDef ADC_InitStructure;
mbed_official 216:577900467c9e 63
mbed_official 76:aeb1df146756 64 // Get the peripheral name (ADC_1, ADC_2...) from the pin and assign it to the object
mbed_official 76:aeb1df146756 65 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 216:577900467c9e 66
mbed_official 76:aeb1df146756 67 if (obj->adc == (ADCName)NC) {
mbed_official 216:577900467c9e 68 error("ADC pin mapping failed");
mbed_official 76:aeb1df146756 69 }
mbed_official 76:aeb1df146756 70
mbed_official 76:aeb1df146756 71 // Configure GPIO
mbed_official 76:aeb1df146756 72 pinmap_pinout(pin, PinMap_ADC);
mbed_official 76:aeb1df146756 73
mbed_official 76:aeb1df146756 74 // Save pin number for the read function
mbed_official 76:aeb1df146756 75 obj->pin = pin;
mbed_official 76:aeb1df146756 76
mbed_official 76:aeb1df146756 77 // The ADC initialization is done once
mbed_official 76:aeb1df146756 78 if (adc_inited == 0) {
mbed_official 76:aeb1df146756 79 adc_inited = 1;
mbed_official 76:aeb1df146756 80
mbed_official 76:aeb1df146756 81 // Get ADC registers structure address
mbed_official 76:aeb1df146756 82 adc = (ADC_TypeDef *)(obj->adc);
mbed_official 216:577900467c9e 83
mbed_official 76:aeb1df146756 84 // Enable ADC clock
mbed_official 76:aeb1df146756 85 RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
mbed_official 216:577900467c9e 86
mbed_official 76:aeb1df146756 87 // Configure ADC
mbed_official 76:aeb1df146756 88 ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
mbed_official 216:577900467c9e 89 ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
mbed_official 76:aeb1df146756 90 ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
mbed_official 76:aeb1df146756 91 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_TRGO;
mbed_official 76:aeb1df146756 92 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
mbed_official 76:aeb1df146756 93 ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
mbed_official 76:aeb1df146756 94 ADC_Init(adc, &ADC_InitStructure);
mbed_official 76:aeb1df146756 95
mbed_official 76:aeb1df146756 96 // Calibrate ADC
mbed_official 76:aeb1df146756 97 ADC_GetCalibrationFactor(adc);
mbed_official 76:aeb1df146756 98
mbed_official 76:aeb1df146756 99 // Enable ADC
mbed_official 76:aeb1df146756 100 ADC_Cmd(adc, ENABLE);
mbed_official 76:aeb1df146756 101 }
mbed_official 76:aeb1df146756 102 }
mbed_official 76:aeb1df146756 103
mbed_official 76:aeb1df146756 104 static inline uint16_t adc_read(analogin_t *obj) {
mbed_official 216:577900467c9e 105 // Get ADC registers structure address
mbed_official 216:577900467c9e 106 ADC_TypeDef *adc = (ADC_TypeDef *)(obj->adc);
mbed_official 216:577900467c9e 107
mbed_official 216:577900467c9e 108 adc->CHSELR = 0; // Clear all channels first
mbed_official 76:aeb1df146756 109
mbed_official 216:577900467c9e 110 // Configure ADC channel
mbed_official 216:577900467c9e 111 switch (obj->pin) {
mbed_official 216:577900467c9e 112 case PA_0:
mbed_official 216:577900467c9e 113 ADC_ChannelConfig(adc, ADC_Channel_0, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 114 break;
mbed_official 216:577900467c9e 115 case PA_1:
mbed_official 216:577900467c9e 116 ADC_ChannelConfig(adc, ADC_Channel_1, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 117 break;
mbed_official 216:577900467c9e 118 case PA_2:
mbed_official 216:577900467c9e 119 ADC_ChannelConfig(adc, ADC_Channel_2, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 120 break;
mbed_official 216:577900467c9e 121 case PA_3:
mbed_official 216:577900467c9e 122 ADC_ChannelConfig(adc, ADC_Channel_3, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 123 break;
mbed_official 216:577900467c9e 124 case PA_4:
mbed_official 216:577900467c9e 125 ADC_ChannelConfig(adc, ADC_Channel_4, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 126 break;
mbed_official 216:577900467c9e 127 case PA_5:
mbed_official 216:577900467c9e 128 ADC_ChannelConfig(adc, ADC_Channel_5, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 129 break;
mbed_official 216:577900467c9e 130 case PA_6:
mbed_official 216:577900467c9e 131 ADC_ChannelConfig(adc, ADC_Channel_6, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 132 break;
mbed_official 216:577900467c9e 133 case PA_7:
mbed_official 216:577900467c9e 134 ADC_ChannelConfig(adc, ADC_Channel_7, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 135 break;
mbed_official 216:577900467c9e 136 case PB_0:
mbed_official 216:577900467c9e 137 ADC_ChannelConfig(adc, ADC_Channel_8, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 138 break;
mbed_official 216:577900467c9e 139 case PB_1:
mbed_official 216:577900467c9e 140 ADC_ChannelConfig(adc, ADC_Channel_9, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 141 break;
mbed_official 216:577900467c9e 142 case PC_0:
mbed_official 216:577900467c9e 143 ADC_ChannelConfig(adc, ADC_Channel_10, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 144 break;
mbed_official 216:577900467c9e 145 case PC_1:
mbed_official 216:577900467c9e 146 ADC_ChannelConfig(adc, ADC_Channel_11, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 147 break;
mbed_official 216:577900467c9e 148 case PC_2:
mbed_official 216:577900467c9e 149 ADC_ChannelConfig(adc, ADC_Channel_12, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 150 break;
mbed_official 216:577900467c9e 151 case PC_3:
mbed_official 216:577900467c9e 152 ADC_ChannelConfig(adc, ADC_Channel_13, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 153 break;
mbed_official 216:577900467c9e 154 case PC_4:
mbed_official 216:577900467c9e 155 ADC_ChannelConfig(adc, ADC_Channel_14, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 156 break;
mbed_official 216:577900467c9e 157 case PC_5:
mbed_official 216:577900467c9e 158 ADC_ChannelConfig(adc, ADC_Channel_15, ADC_SampleTime_7_5Cycles);
mbed_official 216:577900467c9e 159 break;
mbed_official 216:577900467c9e 160 default:
mbed_official 216:577900467c9e 161 return 0;
mbed_official 216:577900467c9e 162 }
mbed_official 77:b5886236e6f0 163
mbed_official 216:577900467c9e 164 while (!ADC_GetFlagStatus(adc, ADC_FLAG_ADRDY)); // Wait ADC ready
mbed_official 216:577900467c9e 165
mbed_official 216:577900467c9e 166 ADC_StartOfConversion(adc); // Start conversion
mbed_official 216:577900467c9e 167
mbed_official 216:577900467c9e 168 while (ADC_GetFlagStatus(adc, ADC_FLAG_EOC) == RESET); // Wait end of conversion
mbed_official 216:577900467c9e 169
mbed_official 216:577900467c9e 170 return (ADC_GetConversionValue(adc)); // Get conversion value
mbed_official 76:aeb1df146756 171 }
mbed_official 76:aeb1df146756 172
mbed_official 76:aeb1df146756 173 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 216:577900467c9e 174 return (adc_read(obj));
mbed_official 76:aeb1df146756 175 }
mbed_official 76:aeb1df146756 176
mbed_official 76:aeb1df146756 177 float analogin_read(analogin_t *obj) {
mbed_official 216:577900467c9e 178 uint16_t value = adc_read(obj);
mbed_official 216:577900467c9e 179 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 76:aeb1df146756 180 }
mbed_official 76:aeb1df146756 181
mbed_official 76:aeb1df146756 182 #endif