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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_F072RB/analogin_api.c@402:09075a3b15e3, 2014-11-14 (annotated)

Committer:
mbed_official
Date:
Fri Nov 14 09:00:07 2014 +0000
Revision:
402:09075a3b15e3
Parent:
298:7557d401dbc3
Child:
414:4ec4c5b614b0
Synchronized with git revision dffeedc96e731e30785ca4a7842fb9769412bea1



Full URL: https://github.com/mbedmicro/mbed/commit/dffeedc96e731e30785ca4a7842fb9769412bea1/



Targets: add USBTX and USBRX pin definitions for targets that don't provide them

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 3 * All rights reserved.
mbed_official 219:993c9b0acbcc 4 *
mbed_official 219:993c9b0acbcc 5 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 6 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 7 *
mbed_official 219:993c9b0acbcc 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 9 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 12 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 14 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 15 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 16 *
mbed_official 219:993c9b0acbcc 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 27 */
mbed_official 239:8cadf13dff33 28 #include "mbed_assert.h"
mbed_official 219:993c9b0acbcc 29 #include "analogin_api.h"
mbed_official 219:993c9b0acbcc 30
mbed_official 219:993c9b0acbcc 31 #if DEVICE_ANALOGIN
mbed_official 219:993c9b0acbcc 32
mbed_official 219:993c9b0acbcc 33 #include "wait_api.h"
mbed_official 219:993c9b0acbcc 34 #include "cmsis.h"
mbed_official 219:993c9b0acbcc 35 #include "pinmap.h"
mbed_official 219:993c9b0acbcc 36
mbed_official 219:993c9b0acbcc 37 static const PinMap PinMap_ADC[] = {
mbed_official 219:993c9b0acbcc 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 219:993c9b0acbcc 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 219:993c9b0acbcc 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 219:993c9b0acbcc 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 219:993c9b0acbcc 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 219:993c9b0acbcc 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 219:993c9b0acbcc 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 219:993c9b0acbcc 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 219:993c9b0acbcc 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 219:993c9b0acbcc 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 219:993c9b0acbcc 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 219:993c9b0acbcc 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 219:993c9b0acbcc 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 219:993c9b0acbcc 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 219:993c9b0acbcc 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 219:993c9b0acbcc 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 219:993c9b0acbcc 54 {NC, NC, 0}
mbed_official 219:993c9b0acbcc 55 };
mbed_official 219:993c9b0acbcc 56
mbed_official 219:993c9b0acbcc 57 ADC_HandleTypeDef AdcHandle;
mbed_official 219:993c9b0acbcc 58
mbed_official 219:993c9b0acbcc 59 int adc_inited = 0;
mbed_official 219:993c9b0acbcc 60
mbed_official 402:09075a3b15e3 61 void analogin_init(analogin_t *obj, PinName pin)
mbed_official 402:09075a3b15e3 62 {
mbed_official 219:993c9b0acbcc 63 // Get the peripheral name from the pin and assign it to the object
mbed_official 219:993c9b0acbcc 64 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 239:8cadf13dff33 65 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 219:993c9b0acbcc 66
mbed_official 219:993c9b0acbcc 67 // Configure GPIO
mbed_official 219:993c9b0acbcc 68 pinmap_pinout(pin, PinMap_ADC);
mbed_official 219:993c9b0acbcc 69
mbed_official 219:993c9b0acbcc 70 // Save pin number for the read function
mbed_official 219:993c9b0acbcc 71 obj->pin = pin;
mbed_official 219:993c9b0acbcc 72
mbed_official 219:993c9b0acbcc 73 // The ADC initialization is done once
mbed_official 219:993c9b0acbcc 74 if (adc_inited == 0) {
mbed_official 219:993c9b0acbcc 75 adc_inited = 1;
mbed_official 219:993c9b0acbcc 76
mbed_official 219:993c9b0acbcc 77 // Enable ADC clock
mbed_official 219:993c9b0acbcc 78 __ADC1_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 79
mbed_official 219:993c9b0acbcc 80 // Configure ADC
mbed_official 219:993c9b0acbcc 81 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 219:993c9b0acbcc 82 AdcHandle.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
mbed_official 219:993c9b0acbcc 83 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 219:993c9b0acbcc 84 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 219:993c9b0acbcc 85 AdcHandle.Init.ScanConvMode = DISABLE;
mbed_official 219:993c9b0acbcc 86 AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV;
mbed_official 219:993c9b0acbcc 87 AdcHandle.Init.LowPowerAutoWait = DISABLE;
mbed_official 219:993c9b0acbcc 88 AdcHandle.Init.LowPowerAutoPowerOff = DISABLE;
mbed_official 219:993c9b0acbcc 89 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 219:993c9b0acbcc 90 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 219:993c9b0acbcc 91 AdcHandle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
mbed_official 219:993c9b0acbcc 92 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
mbed_official 219:993c9b0acbcc 93 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 219:993c9b0acbcc 94 AdcHandle.Init.Overrun = OVR_DATA_OVERWRITTEN;
mbed_official 219:993c9b0acbcc 95 HAL_ADC_Init(&AdcHandle);
mbed_official 219:993c9b0acbcc 96
mbed_official 219:993c9b0acbcc 97 // Run the ADC calibration
mbed_official 219:993c9b0acbcc 98 HAL_ADCEx_Calibration_Start(&AdcHandle);
mbed_official 219:993c9b0acbcc 99 }
mbed_official 219:993c9b0acbcc 100 }
mbed_official 219:993c9b0acbcc 101
mbed_official 402:09075a3b15e3 102 static inline uint16_t adc_read(analogin_t *obj)
mbed_official 402:09075a3b15e3 103 {
mbed_official 219:993c9b0acbcc 104 ADC_ChannelConfTypeDef sConfig;
mbed_official 219:993c9b0acbcc 105
mbed_official 219:993c9b0acbcc 106 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 219:993c9b0acbcc 107
mbed_official 219:993c9b0acbcc 108 // Configure ADC channel
mbed_official 219:993c9b0acbcc 109 sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
mbed_official 219:993c9b0acbcc 110 sConfig.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
mbed_official 219:993c9b0acbcc 111
mbed_official 219:993c9b0acbcc 112 switch (obj->pin) {
mbed_official 219:993c9b0acbcc 113 case PA_0:
mbed_official 219:993c9b0acbcc 114 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 219:993c9b0acbcc 115 break;
mbed_official 219:993c9b0acbcc 116 case PA_1:
mbed_official 219:993c9b0acbcc 117 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 219:993c9b0acbcc 118 break;
mbed_official 219:993c9b0acbcc 119 case PA_2:
mbed_official 219:993c9b0acbcc 120 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 219:993c9b0acbcc 121 break;
mbed_official 219:993c9b0acbcc 122 case PA_3:
mbed_official 219:993c9b0acbcc 123 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 219:993c9b0acbcc 124 break;
mbed_official 219:993c9b0acbcc 125 case PA_4:
mbed_official 219:993c9b0acbcc 126 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 219:993c9b0acbcc 127 break;
mbed_official 219:993c9b0acbcc 128 case PA_5:
mbed_official 219:993c9b0acbcc 129 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 219:993c9b0acbcc 130 break;
mbed_official 219:993c9b0acbcc 131 case PA_6:
mbed_official 219:993c9b0acbcc 132 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 219:993c9b0acbcc 133 break;
mbed_official 219:993c9b0acbcc 134 case PA_7:
mbed_official 219:993c9b0acbcc 135 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 219:993c9b0acbcc 136 break;
mbed_official 219:993c9b0acbcc 137 case PB_0:
mbed_official 219:993c9b0acbcc 138 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 219:993c9b0acbcc 139 break;
mbed_official 219:993c9b0acbcc 140 case PB_1:
mbed_official 219:993c9b0acbcc 141 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 219:993c9b0acbcc 142 break;
mbed_official 219:993c9b0acbcc 143 case PC_0:
mbed_official 219:993c9b0acbcc 144 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 219:993c9b0acbcc 145 break;
mbed_official 219:993c9b0acbcc 146 case PC_1:
mbed_official 219:993c9b0acbcc 147 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 219:993c9b0acbcc 148 break;
mbed_official 219:993c9b0acbcc 149 case PC_2:
mbed_official 219:993c9b0acbcc 150 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 219:993c9b0acbcc 151 break;
mbed_official 219:993c9b0acbcc 152 case PC_3:
mbed_official 219:993c9b0acbcc 153 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 219:993c9b0acbcc 154 break;
mbed_official 219:993c9b0acbcc 155 case PC_4:
mbed_official 219:993c9b0acbcc 156 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 219:993c9b0acbcc 157 break;
mbed_official 219:993c9b0acbcc 158 case PC_5:
mbed_official 219:993c9b0acbcc 159 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 219:993c9b0acbcc 160 break;
mbed_official 219:993c9b0acbcc 161 default:
mbed_official 219:993c9b0acbcc 162 return 0;
mbed_official 219:993c9b0acbcc 163 }
mbed_official 219:993c9b0acbcc 164
mbed_official 219:993c9b0acbcc 165 // Clear all channels as it is not done in HAL_ADC_ConfigChannel()
mbed_official 219:993c9b0acbcc 166 AdcHandle.Instance->CHSELR = 0;
mbed_official 219:993c9b0acbcc 167
mbed_official 219:993c9b0acbcc 168 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 219:993c9b0acbcc 169
mbed_official 219:993c9b0acbcc 170 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 219:993c9b0acbcc 171
mbed_official 219:993c9b0acbcc 172 // Wait end of conversion and get value
mbed_official 219:993c9b0acbcc 173 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 219:993c9b0acbcc 174 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 219:993c9b0acbcc 175 } else {
mbed_official 219:993c9b0acbcc 176 return 0;
mbed_official 219:993c9b0acbcc 177 }
mbed_official 219:993c9b0acbcc 178 }
mbed_official 219:993c9b0acbcc 179
mbed_official 402:09075a3b15e3 180 uint16_t analogin_read_u16(analogin_t *obj)
mbed_official 402:09075a3b15e3 181 {
mbed_official 298:7557d401dbc3 182 uint16_t value = adc_read(obj);
mbed_official 298:7557d401dbc3 183 // 12-bit to 16-bit conversion
mbed_official 298:7557d401dbc3 184 value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
mbed_official 298:7557d401dbc3 185 return value;
mbed_official 219:993c9b0acbcc 186 }
mbed_official 219:993c9b0acbcc 187
mbed_official 402:09075a3b15e3 188 float analogin_read(analogin_t *obj)
mbed_official 402:09075a3b15e3 189 {
mbed_official 219:993c9b0acbcc 190 uint16_t value = adc_read(obj);
mbed_official 219:993c9b0acbcc 191 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 219:993c9b0acbcc 192 }
mbed_official 219:993c9b0acbcc 193
mbed_official 219:993c9b0acbcc 194 #endif