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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

Import librarymbed

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_NUCLEO_L053R8/analogin_api.c@393:17d2d502961d, 2014-11-07 (annotated)

Committer:
mbed_official
Date:
Fri Nov 07 12:00:11 2014 +0000
Revision:
393:17d2d502961d
Parent:
334:c5736b48acaf
Child:
402:09075a3b15e3
Synchronized with git revision 78a3d4f2301aad7367e924e8231b4411d11038ea



Full URL: https://github.com/mbedmicro/mbed/commit/78a3d4f2301aad7367e924e8231b4411d11038ea/



Toolchain: NUCLEO_F0 - Add missing files for IAR exporter

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 "analogin_api.h"
mbed_official 181:a4cbdfbbd2f4 30
mbed_official 181:a4cbdfbbd2f4 31 #if DEVICE_ANALOGIN
mbed_official 181:a4cbdfbbd2f4 32
mbed_official 181:a4cbdfbbd2f4 33 #include "wait_api.h"
mbed_official 181:a4cbdfbbd2f4 34 #include "cmsis.h"
mbed_official 181:a4cbdfbbd2f4 35 #include "pinmap.h"
mbed_official 181:a4cbdfbbd2f4 36
mbed_official 181:a4cbdfbbd2f4 37 static const PinMap PinMap_ADC[] = {
mbed_official 181:a4cbdfbbd2f4 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 181:a4cbdfbbd2f4 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 181:a4cbdfbbd2f4 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 181:a4cbdfbbd2f4 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 181:a4cbdfbbd2f4 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 181:a4cbdfbbd2f4 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 181:a4cbdfbbd2f4 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 181:a4cbdfbbd2f4 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 181:a4cbdfbbd2f4 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 181:a4cbdfbbd2f4 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 181:a4cbdfbbd2f4 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 181:a4cbdfbbd2f4 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 181:a4cbdfbbd2f4 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 181:a4cbdfbbd2f4 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 181:a4cbdfbbd2f4 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 181:a4cbdfbbd2f4 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 181:a4cbdfbbd2f4 54 {NC, NC, 0}
mbed_official 181:a4cbdfbbd2f4 55 };
mbed_official 181:a4cbdfbbd2f4 56
mbed_official 181:a4cbdfbbd2f4 57 ADC_HandleTypeDef AdcHandle;
mbed_official 181:a4cbdfbbd2f4 58
mbed_official 181:a4cbdfbbd2f4 59 int adc_inited = 0;
mbed_official 181:a4cbdfbbd2f4 60
mbed_official 181:a4cbdfbbd2f4 61 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 181:a4cbdfbbd2f4 62 // Get the peripheral name from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 63 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 227:7bd0639b8911 64 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 181:a4cbdfbbd2f4 65
mbed_official 181:a4cbdfbbd2f4 66 // Configure GPIO
mbed_official 181:a4cbdfbbd2f4 67 pinmap_pinout(pin, PinMap_ADC);
mbed_official 181:a4cbdfbbd2f4 68
mbed_official 181:a4cbdfbbd2f4 69 // Save pin number for the read function
mbed_official 181:a4cbdfbbd2f4 70 obj->pin = pin;
mbed_official 181:a4cbdfbbd2f4 71
mbed_official 181:a4cbdfbbd2f4 72 // The ADC initialization is done once
mbed_official 181:a4cbdfbbd2f4 73 if (adc_inited == 0) {
mbed_official 181:a4cbdfbbd2f4 74 adc_inited = 1;
mbed_official 181:a4cbdfbbd2f4 75
mbed_official 291:bdc8a81aee9a 76 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 291:bdc8a81aee9a 77
mbed_official 181:a4cbdfbbd2f4 78 // Enable ADC clock
mbed_official 181:a4cbdfbbd2f4 79 __ADC1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 80
mbed_official 181:a4cbdfbbd2f4 81 // Configure ADC
mbed_official 181:a4cbdfbbd2f4 82 AdcHandle.Init.OversamplingMode = DISABLE;
mbed_official 334:c5736b48acaf 83 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1;
mbed_official 181:a4cbdfbbd2f4 84 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 334:c5736b48acaf 85 AdcHandle.Init.SamplingTime = ADC_SAMPLETIME_41CYCLES_5;
mbed_official 181:a4cbdfbbd2f4 86 AdcHandle.Init.ScanDirection = ADC_SCAN_DIRECTION_UPWARD;
mbed_official 181:a4cbdfbbd2f4 87 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 181:a4cbdfbbd2f4 88 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 181:a4cbdfbbd2f4 89 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 181:a4cbdfbbd2f4 90 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
mbed_official 181:a4cbdfbbd2f4 91 AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIG0_T6_TRGO; // Not used here
mbed_official 181:a4cbdfbbd2f4 92 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 181:a4cbdfbbd2f4 93 AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV;
mbed_official 334:c5736b48acaf 94 AdcHandle.Init.Overrun = OVR_DATA_OVERWRITTEN;
mbed_official 181:a4cbdfbbd2f4 95 AdcHandle.Init.LowPowerAutoWait = ENABLE;
mbed_official 181:a4cbdfbbd2f4 96 AdcHandle.Init.LowPowerFrequencyMode = DISABLE; // To be enabled only if ADC clock < 2.8 MHz
mbed_official 291:bdc8a81aee9a 97 AdcHandle.Init.LowPowerAutoOff = DISABLE;
mbed_official 181:a4cbdfbbd2f4 98 HAL_ADC_Init(&AdcHandle);
mbed_official 291:bdc8a81aee9a 99
mbed_official 291:bdc8a81aee9a 100 // Calibration
mbed_official 291:bdc8a81aee9a 101 HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_SINGLE_ENDED);
mbed_official 291:bdc8a81aee9a 102
mbed_official 291:bdc8a81aee9a 103 __HAL_ADC_ENABLE(&AdcHandle);
mbed_official 181:a4cbdfbbd2f4 104 }
mbed_official 181:a4cbdfbbd2f4 105 }
mbed_official 181:a4cbdfbbd2f4 106
mbed_official 181:a4cbdfbbd2f4 107 static inline uint16_t adc_read(analogin_t *obj) {
mbed_official 181:a4cbdfbbd2f4 108 ADC_ChannelConfTypeDef sConfig;
mbed_official 181:a4cbdfbbd2f4 109
mbed_official 181:a4cbdfbbd2f4 110 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 181:a4cbdfbbd2f4 111
mbed_official 181:a4cbdfbbd2f4 112 // Configure ADC channel
mbed_official 181:a4cbdfbbd2f4 113 switch (obj->pin) {
mbed_official 181:a4cbdfbbd2f4 114 case PA_0:
mbed_official 181:a4cbdfbbd2f4 115 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 181:a4cbdfbbd2f4 116 break;
mbed_official 181:a4cbdfbbd2f4 117 case PA_1:
mbed_official 181:a4cbdfbbd2f4 118 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 181:a4cbdfbbd2f4 119 break;
mbed_official 181:a4cbdfbbd2f4 120 case PA_2:
mbed_official 181:a4cbdfbbd2f4 121 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 181:a4cbdfbbd2f4 122 break;
mbed_official 181:a4cbdfbbd2f4 123 case PA_3:
mbed_official 181:a4cbdfbbd2f4 124 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 181:a4cbdfbbd2f4 125 break;
mbed_official 181:a4cbdfbbd2f4 126 case PA_4:
mbed_official 181:a4cbdfbbd2f4 127 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 181:a4cbdfbbd2f4 128 break;
mbed_official 181:a4cbdfbbd2f4 129 case PA_5:
mbed_official 181:a4cbdfbbd2f4 130 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 181:a4cbdfbbd2f4 131 break;
mbed_official 181:a4cbdfbbd2f4 132 case PA_6:
mbed_official 181:a4cbdfbbd2f4 133 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 181:a4cbdfbbd2f4 134 break;
mbed_official 181:a4cbdfbbd2f4 135 case PA_7:
mbed_official 181:a4cbdfbbd2f4 136 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 181:a4cbdfbbd2f4 137 break;
mbed_official 181:a4cbdfbbd2f4 138 case PB_0:
mbed_official 181:a4cbdfbbd2f4 139 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 181:a4cbdfbbd2f4 140 break;
mbed_official 181:a4cbdfbbd2f4 141 case PB_1:
mbed_official 181:a4cbdfbbd2f4 142 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 181:a4cbdfbbd2f4 143 break;
mbed_official 181:a4cbdfbbd2f4 144 case PC_0:
mbed_official 181:a4cbdfbbd2f4 145 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 181:a4cbdfbbd2f4 146 break;
mbed_official 181:a4cbdfbbd2f4 147 case PC_1:
mbed_official 181:a4cbdfbbd2f4 148 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 181:a4cbdfbbd2f4 149 break;
mbed_official 181:a4cbdfbbd2f4 150 case PC_2:
mbed_official 181:a4cbdfbbd2f4 151 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 181:a4cbdfbbd2f4 152 break;
mbed_official 181:a4cbdfbbd2f4 153 case PC_3:
mbed_official 181:a4cbdfbbd2f4 154 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 181:a4cbdfbbd2f4 155 break;
mbed_official 181:a4cbdfbbd2f4 156 case PC_4:
mbed_official 181:a4cbdfbbd2f4 157 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 181:a4cbdfbbd2f4 158 break;
mbed_official 181:a4cbdfbbd2f4 159 case PC_5:
mbed_official 181:a4cbdfbbd2f4 160 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 181:a4cbdfbbd2f4 161 break;
mbed_official 181:a4cbdfbbd2f4 162 default:
mbed_official 181:a4cbdfbbd2f4 163 return 0;
mbed_official 181:a4cbdfbbd2f4 164 }
mbed_official 181:a4cbdfbbd2f4 165
mbed_official 181:a4cbdfbbd2f4 166 ADC1->CHSELR = 0; // [TODO] Workaround. To be removed after Cube driver is corrected.
mbed_official 181:a4cbdfbbd2f4 167 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 181:a4cbdfbbd2f4 168
mbed_official 181:a4cbdfbbd2f4 169 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 181:a4cbdfbbd2f4 170
mbed_official 181:a4cbdfbbd2f4 171 // Wait end of conversion and get value
mbed_official 181:a4cbdfbbd2f4 172 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 181:a4cbdfbbd2f4 173 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 181:a4cbdfbbd2f4 174 } else {
mbed_official 181:a4cbdfbbd2f4 175 return 0;
mbed_official 181:a4cbdfbbd2f4 176 }
mbed_official 181:a4cbdfbbd2f4 177 }
mbed_official 181:a4cbdfbbd2f4 178
mbed_official 181:a4cbdfbbd2f4 179 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 298:7557d401dbc3 180 uint16_t value = adc_read(obj);
mbed_official 298:7557d401dbc3 181 // 12-bit to 16-bit conversion
mbed_official 298:7557d401dbc3 182 value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
mbed_official 298:7557d401dbc3 183 return value;
mbed_official 181:a4cbdfbbd2f4 184 }
mbed_official 181:a4cbdfbbd2f4 185
mbed_official 181:a4cbdfbbd2f4 186 float analogin_read(analogin_t *obj) {
mbed_official 181:a4cbdfbbd2f4 187 uint16_t value = adc_read(obj);
mbed_official 181:a4cbdfbbd2f4 188 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 181:a4cbdfbbd2f4 189 }
mbed_official 181:a4cbdfbbd2f4 190
mbed_official 181:a4cbdfbbd2f4 191 #endif