mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/analogin_api.c@70:c1fbde68b492, 2014-01-07 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Jan 07 11:00:05 2014 +0000
- Revision:
- 70:c1fbde68b492
- Parent:
- 56:99eb381a3269
- Child:
- 167:d5744491c362
Synchronized with git revision 3f438a307904431f2782db3c8fa49946b9fc1d85
Full URL: https://github.com/mbedmicro/mbed/commit/3f438a307904431f2782db3c8fa49946b9fc1d85/
[NUCLEO_F103RB] license text changed + sleep hal updated
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 52:a51c77007319 | 1 | /* mbed Microcontroller Library |
mbed_official | 70:c1fbde68b492 | 2 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 70:c1fbde68b492 | 3 | * All rights reserved. |
mbed_official | 52:a51c77007319 | 4 | * |
mbed_official | 70:c1fbde68b492 | 5 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 70:c1fbde68b492 | 6 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 52:a51c77007319 | 7 | * |
mbed_official | 70:c1fbde68b492 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 70:c1fbde68b492 | 9 | * this list of conditions and the following disclaimer. |
mbed_official | 70:c1fbde68b492 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 70:c1fbde68b492 | 11 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 70:c1fbde68b492 | 12 | * and/or other materials provided with the distribution. |
mbed_official | 70:c1fbde68b492 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 70:c1fbde68b492 | 14 | * may be used to endorse or promote products derived from this software |
mbed_official | 70:c1fbde68b492 | 15 | * without specific prior written permission. |
mbed_official | 52:a51c77007319 | 16 | * |
mbed_official | 70:c1fbde68b492 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 70:c1fbde68b492 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 70:c1fbde68b492 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 70:c1fbde68b492 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 70:c1fbde68b492 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 70:c1fbde68b492 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 70:c1fbde68b492 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 70:c1fbde68b492 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 70:c1fbde68b492 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 70:c1fbde68b492 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 52:a51c77007319 | 27 | */ |
mbed_official | 52:a51c77007319 | 28 | #include "analogin_api.h" |
mbed_official | 52:a51c77007319 | 29 | #include "wait_api.h" |
mbed_official | 52:a51c77007319 | 30 | |
mbed_official | 52:a51c77007319 | 31 | #if DEVICE_ANALOGIN |
mbed_official | 52:a51c77007319 | 32 | |
mbed_official | 52:a51c77007319 | 33 | #include "cmsis.h" |
mbed_official | 52:a51c77007319 | 34 | #include "pinmap.h" |
mbed_official | 52:a51c77007319 | 35 | #include "error.h" |
mbed_official | 52:a51c77007319 | 36 | |
mbed_official | 52:a51c77007319 | 37 | static const PinMap PinMap_ADC[] = { |
mbed_official | 52:a51c77007319 | 38 | {PA_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 39 | {PA_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 40 | {PA_4, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 41 | {PB_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 42 | {PC_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 43 | {PC_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AIN, 0)}, |
mbed_official | 52:a51c77007319 | 44 | {NC, NC, 0} |
mbed_official | 52:a51c77007319 | 45 | }; |
mbed_official | 52:a51c77007319 | 46 | |
mbed_official | 52:a51c77007319 | 47 | int adc_inited = 0; |
mbed_official | 52:a51c77007319 | 48 | |
mbed_official | 52:a51c77007319 | 49 | void analogin_init(analogin_t *obj, PinName pin) { |
mbed_official | 52:a51c77007319 | 50 | |
mbed_official | 52:a51c77007319 | 51 | ADC_TypeDef *adc; |
mbed_official | 52:a51c77007319 | 52 | ADC_InitTypeDef ADC_InitStructure; |
mbed_official | 52:a51c77007319 | 53 | |
mbed_official | 52:a51c77007319 | 54 | // Get the peripheral name (ADC_1, ADC_2...) from the pin and assign it to the object |
mbed_official | 52:a51c77007319 | 55 | obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); |
mbed_official | 52:a51c77007319 | 56 | |
mbed_official | 52:a51c77007319 | 57 | if (obj->adc == (ADCName)NC) { |
mbed_official | 52:a51c77007319 | 58 | error("ADC pin mapping failed"); |
mbed_official | 52:a51c77007319 | 59 | } |
mbed_official | 52:a51c77007319 | 60 | |
mbed_official | 52:a51c77007319 | 61 | // Configure GPIO |
mbed_official | 52:a51c77007319 | 62 | pinmap_pinout(pin, PinMap_ADC); |
mbed_official | 52:a51c77007319 | 63 | |
mbed_official | 52:a51c77007319 | 64 | // Save pin number for the read function |
mbed_official | 52:a51c77007319 | 65 | obj->pin = pin; |
mbed_official | 52:a51c77007319 | 66 | |
mbed_official | 52:a51c77007319 | 67 | // The ADC initialization is done once |
mbed_official | 52:a51c77007319 | 68 | if (adc_inited == 0) { |
mbed_official | 52:a51c77007319 | 69 | adc_inited = 1; |
mbed_official | 52:a51c77007319 | 70 | |
mbed_official | 52:a51c77007319 | 71 | // Get ADC registers structure address |
mbed_official | 52:a51c77007319 | 72 | adc = (ADC_TypeDef *)(obj->adc); |
mbed_official | 52:a51c77007319 | 73 | |
mbed_official | 52:a51c77007319 | 74 | // Enable ADC clock |
mbed_official | 52:a51c77007319 | 75 | RCC_ADCCLKConfig(RCC_PCLK2_Div4); |
mbed_official | 52:a51c77007319 | 76 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); |
mbed_official | 52:a51c77007319 | 77 | |
mbed_official | 52:a51c77007319 | 78 | // Configure ADC |
mbed_official | 52:a51c77007319 | 79 | ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; |
mbed_official | 52:a51c77007319 | 80 | ADC_InitStructure.ADC_ScanConvMode = DISABLE; |
mbed_official | 52:a51c77007319 | 81 | ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; |
mbed_official | 52:a51c77007319 | 82 | ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; |
mbed_official | 52:a51c77007319 | 83 | ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; |
mbed_official | 52:a51c77007319 | 84 | ADC_InitStructure.ADC_NbrOfChannel = 1; |
mbed_official | 52:a51c77007319 | 85 | ADC_Init(adc, &ADC_InitStructure); |
mbed_official | 52:a51c77007319 | 86 | |
mbed_official | 52:a51c77007319 | 87 | // Enable ADC |
mbed_official | 52:a51c77007319 | 88 | ADC_Cmd(adc, ENABLE); |
mbed_official | 52:a51c77007319 | 89 | |
mbed_official | 52:a51c77007319 | 90 | // Calibrate ADC |
mbed_official | 52:a51c77007319 | 91 | ADC_ResetCalibration(adc); |
mbed_official | 52:a51c77007319 | 92 | while(ADC_GetResetCalibrationStatus(adc)); |
mbed_official | 52:a51c77007319 | 93 | ADC_StartCalibration(adc); |
mbed_official | 52:a51c77007319 | 94 | while(ADC_GetCalibrationStatus(adc)); |
mbed_official | 52:a51c77007319 | 95 | } |
mbed_official | 52:a51c77007319 | 96 | } |
mbed_official | 52:a51c77007319 | 97 | |
mbed_official | 52:a51c77007319 | 98 | static inline uint16_t adc_read(analogin_t *obj) { |
mbed_official | 52:a51c77007319 | 99 | // Get ADC registers structure address |
mbed_official | 52:a51c77007319 | 100 | ADC_TypeDef *adc = (ADC_TypeDef *)(obj->adc); |
mbed_official | 52:a51c77007319 | 101 | |
mbed_official | 52:a51c77007319 | 102 | // Configure ADC channel |
mbed_official | 52:a51c77007319 | 103 | switch (obj->pin) { |
mbed_official | 52:a51c77007319 | 104 | case PA_0: |
mbed_official | 52:a51c77007319 | 105 | ADC_RegularChannelConfig(adc, ADC_Channel_0, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 106 | break; |
mbed_official | 52:a51c77007319 | 107 | case PA_1: |
mbed_official | 52:a51c77007319 | 108 | ADC_RegularChannelConfig(adc, ADC_Channel_1, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 109 | break; |
mbed_official | 52:a51c77007319 | 110 | case PA_4: |
mbed_official | 52:a51c77007319 | 111 | ADC_RegularChannelConfig(adc, ADC_Channel_4, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 112 | break; |
mbed_official | 52:a51c77007319 | 113 | case PB_0: |
mbed_official | 52:a51c77007319 | 114 | ADC_RegularChannelConfig(adc, ADC_Channel_8, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 115 | break; |
mbed_official | 52:a51c77007319 | 116 | case PC_1: |
mbed_official | 52:a51c77007319 | 117 | ADC_RegularChannelConfig(adc, ADC_Channel_11, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 118 | break; |
mbed_official | 52:a51c77007319 | 119 | case PC_0: |
mbed_official | 52:a51c77007319 | 120 | ADC_RegularChannelConfig(adc, ADC_Channel_10, 1, ADC_SampleTime_7Cycles5); |
mbed_official | 52:a51c77007319 | 121 | break; |
mbed_official | 52:a51c77007319 | 122 | default: |
mbed_official | 52:a51c77007319 | 123 | return 0; |
mbed_official | 52:a51c77007319 | 124 | } |
mbed_official | 52:a51c77007319 | 125 | |
mbed_official | 52:a51c77007319 | 126 | ADC_SoftwareStartConvCmd(adc, ENABLE); // Start conversion |
mbed_official | 52:a51c77007319 | 127 | |
mbed_official | 52:a51c77007319 | 128 | while(ADC_GetFlagStatus(adc, ADC_FLAG_EOC) == RESET); // Wait end of conversion |
mbed_official | 52:a51c77007319 | 129 | |
mbed_official | 52:a51c77007319 | 130 | return(ADC_GetConversionValue(adc)); // Get conversion value |
mbed_official | 52:a51c77007319 | 131 | } |
mbed_official | 52:a51c77007319 | 132 | |
mbed_official | 52:a51c77007319 | 133 | uint16_t analogin_read_u16(analogin_t *obj) { |
mbed_official | 52:a51c77007319 | 134 | return(adc_read(obj)); |
mbed_official | 52:a51c77007319 | 135 | } |
mbed_official | 52:a51c77007319 | 136 | |
mbed_official | 52:a51c77007319 | 137 | float analogin_read(analogin_t *obj) { |
mbed_official | 52:a51c77007319 | 138 | uint16_t value = adc_read(obj); |
mbed_official | 52:a51c77007319 | 139 | return (float)value * (1.0f / (float)0xFFF); // 12 bits range |
mbed_official | 52:a51c77007319 | 140 | } |
mbed_official | 52:a51c77007319 | 141 | |
mbed_official | 52:a51c77007319 | 142 | #endif |