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_F411RE/analogin_api.c@235:685d5f11838f, 2014-06-23 (annotated)

Committer:
mbed_official
Date:
Mon Jun 23 14:00:09 2014 +0100
Revision:
235:685d5f11838f
Child:
298:7557d401dbc3
Synchronized with git revision 9728c76667962b289ee9c4c687ef9f115db48cd3



Full URL: https://github.com/mbedmicro/mbed/commit/9728c76667962b289ee9c4c687ef9f115db48cd3/



[NUCLEO_F411RE] Add all target files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 3 * All rights reserved.
mbed_official 235:685d5f11838f 4 *
mbed_official 235:685d5f11838f 5 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 6 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 7 *
mbed_official 235:685d5f11838f 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 9 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 12 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 14 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 15 * without specific prior written permission.
mbed_official 235:685d5f11838f 16 *
mbed_official 235:685d5f11838f 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 27 */
mbed_official 235:685d5f11838f 28 #include "mbed_assert.h"
mbed_official 235:685d5f11838f 29 #include "analogin_api.h"
mbed_official 235:685d5f11838f 30
mbed_official 235:685d5f11838f 31 #if DEVICE_ANALOGIN
mbed_official 235:685d5f11838f 32
mbed_official 235:685d5f11838f 33 #include "wait_api.h"
mbed_official 235:685d5f11838f 34 #include "cmsis.h"
mbed_official 235:685d5f11838f 35 #include "pinmap.h"
mbed_official 235:685d5f11838f 36
mbed_official 235:685d5f11838f 37 static const PinMap PinMap_ADC[] = {
mbed_official 235:685d5f11838f 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 235:685d5f11838f 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 235:685d5f11838f 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 235:685d5f11838f 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 235:685d5f11838f 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 235:685d5f11838f 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 235:685d5f11838f 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 235:685d5f11838f 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 235:685d5f11838f 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 235:685d5f11838f 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 235:685d5f11838f 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 235:685d5f11838f 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 235:685d5f11838f 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 235:685d5f11838f 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 235:685d5f11838f 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 235:685d5f11838f 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 235:685d5f11838f 54 {NC, NC, 0}
mbed_official 235:685d5f11838f 55 };
mbed_official 235:685d5f11838f 56
mbed_official 235:685d5f11838f 57 ADC_HandleTypeDef AdcHandle;
mbed_official 235:685d5f11838f 58
mbed_official 235:685d5f11838f 59 int adc_inited = 0;
mbed_official 235:685d5f11838f 60
mbed_official 235:685d5f11838f 61 void analogin_init(analogin_t *obj, PinName pin)
mbed_official 235:685d5f11838f 62 {
mbed_official 235:685d5f11838f 63 // Get the peripheral name from the pin and assign it to the object
mbed_official 235:685d5f11838f 64 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 235:685d5f11838f 65 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 235:685d5f11838f 66
mbed_official 235:685d5f11838f 67 // Configure GPIO
mbed_official 235:685d5f11838f 68 pinmap_pinout(pin, PinMap_ADC);
mbed_official 235:685d5f11838f 69
mbed_official 235:685d5f11838f 70 // Save pin number for the read function
mbed_official 235:685d5f11838f 71 obj->pin = pin;
mbed_official 235:685d5f11838f 72
mbed_official 235:685d5f11838f 73 // The ADC initialization is done once
mbed_official 235:685d5f11838f 74 if (adc_inited == 0) {
mbed_official 235:685d5f11838f 75 adc_inited = 1;
mbed_official 235:685d5f11838f 76
mbed_official 235:685d5f11838f 77 // Enable ADC clock
mbed_official 235:685d5f11838f 78 __ADC1_CLK_ENABLE();
mbed_official 235:685d5f11838f 79
mbed_official 235:685d5f11838f 80 // Configure ADC
mbed_official 235:685d5f11838f 81 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 235:685d5f11838f 82 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
mbed_official 235:685d5f11838f 83 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 235:685d5f11838f 84 AdcHandle.Init.ScanConvMode = DISABLE;
mbed_official 235:685d5f11838f 85 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 235:685d5f11838f 86 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 235:685d5f11838f 87 AdcHandle.Init.NbrOfDiscConversion = 0;
mbed_official 235:685d5f11838f 88 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
mbed_official 235:685d5f11838f 89 AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
mbed_official 235:685d5f11838f 90 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 235:685d5f11838f 91 AdcHandle.Init.NbrOfConversion = 1;
mbed_official 235:685d5f11838f 92 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 235:685d5f11838f 93 AdcHandle.Init.EOCSelection = DISABLE;
mbed_official 235:685d5f11838f 94 HAL_ADC_Init(&AdcHandle);
mbed_official 235:685d5f11838f 95 }
mbed_official 235:685d5f11838f 96 }
mbed_official 235:685d5f11838f 97
mbed_official 235:685d5f11838f 98 static inline uint16_t adc_read(analogin_t *obj)
mbed_official 235:685d5f11838f 99 {
mbed_official 235:685d5f11838f 100 ADC_ChannelConfTypeDef sConfig;
mbed_official 235:685d5f11838f 101
mbed_official 235:685d5f11838f 102 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 235:685d5f11838f 103
mbed_official 235:685d5f11838f 104 // Configure ADC channel
mbed_official 235:685d5f11838f 105 sConfig.Rank = 1;
mbed_official 235:685d5f11838f 106 sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
mbed_official 235:685d5f11838f 107 sConfig.Offset = 0;
mbed_official 235:685d5f11838f 108
mbed_official 235:685d5f11838f 109 switch (obj->pin) {
mbed_official 235:685d5f11838f 110 case PA_0:
mbed_official 235:685d5f11838f 111 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 235:685d5f11838f 112 break;
mbed_official 235:685d5f11838f 113 case PA_1:
mbed_official 235:685d5f11838f 114 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 235:685d5f11838f 115 break;
mbed_official 235:685d5f11838f 116 case PA_2:
mbed_official 235:685d5f11838f 117 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 235:685d5f11838f 118 break;
mbed_official 235:685d5f11838f 119 case PA_3:
mbed_official 235:685d5f11838f 120 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 235:685d5f11838f 121 break;
mbed_official 235:685d5f11838f 122 case PA_4:
mbed_official 235:685d5f11838f 123 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 235:685d5f11838f 124 break;
mbed_official 235:685d5f11838f 125 case PA_5:
mbed_official 235:685d5f11838f 126 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 235:685d5f11838f 127 break;
mbed_official 235:685d5f11838f 128 case PA_6:
mbed_official 235:685d5f11838f 129 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 235:685d5f11838f 130 break;
mbed_official 235:685d5f11838f 131 case PA_7:
mbed_official 235:685d5f11838f 132 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 235:685d5f11838f 133 break;
mbed_official 235:685d5f11838f 134 case PB_0:
mbed_official 235:685d5f11838f 135 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 235:685d5f11838f 136 break;
mbed_official 235:685d5f11838f 137 case PB_1:
mbed_official 235:685d5f11838f 138 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 235:685d5f11838f 139 break;
mbed_official 235:685d5f11838f 140 case PC_0:
mbed_official 235:685d5f11838f 141 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 235:685d5f11838f 142 break;
mbed_official 235:685d5f11838f 143 case PC_1:
mbed_official 235:685d5f11838f 144 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 235:685d5f11838f 145 break;
mbed_official 235:685d5f11838f 146 case PC_2:
mbed_official 235:685d5f11838f 147 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 235:685d5f11838f 148 break;
mbed_official 235:685d5f11838f 149 case PC_3:
mbed_official 235:685d5f11838f 150 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 235:685d5f11838f 151 break;
mbed_official 235:685d5f11838f 152 case PC_4:
mbed_official 235:685d5f11838f 153 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 235:685d5f11838f 154 break;
mbed_official 235:685d5f11838f 155 case PC_5:
mbed_official 235:685d5f11838f 156 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 235:685d5f11838f 157 break;
mbed_official 235:685d5f11838f 158 default:
mbed_official 235:685d5f11838f 159 return 0;
mbed_official 235:685d5f11838f 160 }
mbed_official 235:685d5f11838f 161
mbed_official 235:685d5f11838f 162 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 235:685d5f11838f 163
mbed_official 235:685d5f11838f 164 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 235:685d5f11838f 165
mbed_official 235:685d5f11838f 166 // Wait end of conversion and get value
mbed_official 235:685d5f11838f 167 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 235:685d5f11838f 168 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 235:685d5f11838f 169 } else {
mbed_official 235:685d5f11838f 170 return 0;
mbed_official 235:685d5f11838f 171 }
mbed_official 235:685d5f11838f 172 }
mbed_official 235:685d5f11838f 173
mbed_official 235:685d5f11838f 174 uint16_t analogin_read_u16(analogin_t *obj)
mbed_official 235:685d5f11838f 175 {
mbed_official 235:685d5f11838f 176 return (adc_read(obj));
mbed_official 235:685d5f11838f 177 }
mbed_official 235:685d5f11838f 178
mbed_official 235:685d5f11838f 179 float analogin_read(analogin_t *obj)
mbed_official 235:685d5f11838f 180 {
mbed_official 235:685d5f11838f 181 uint16_t value = adc_read(obj);
mbed_official 235:685d5f11838f 182 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 235:685d5f11838f 183 }
mbed_official 235:685d5f11838f 184
mbed_official 235:685d5f11838f 185 #endif