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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_L152RE/analogin_api.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
227:7bd0639b8911
Child:
298:7557d401dbc3
Synchronized with git revision 490d1a6606b3138f165c5edf2f2370ca616587c0



Full URL: https://github.com/mbedmicro/mbed/commit/490d1a6606b3138f165c5edf2f2370ca616587c0/



[LPC1114] Sleep fix + some device.h settings

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 227:7bd0639b8911 28 #include "mbed_assert.h"
mbed_official 76:aeb1df146756 29 #include "analogin_api.h"
mbed_official 76:aeb1df146756 30
mbed_official 76:aeb1df146756 31 #if DEVICE_ANALOGIN
mbed_official 76:aeb1df146756 32
mbed_official 76:aeb1df146756 33 #include "cmsis.h"
mbed_official 76:aeb1df146756 34 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 35 #include "wait_api.h"
mbed_official 76:aeb1df146756 36
mbed_official 76:aeb1df146756 37 static const PinMap PinMap_ADC[] = {
mbed_official 129:0182c99221bc 38 {PA_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN0
mbed_official 129:0182c99221bc 39 {PA_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN1
mbed_official 129:0182c99221bc 40 {PA_2, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN2
mbed_official 129:0182c99221bc 41 {PA_3, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN3
mbed_official 129:0182c99221bc 42 {PA_4, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN4
mbed_official 129:0182c99221bc 43 {PA_5, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN5
mbed_official 129:0182c99221bc 44 {PA_6, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN6
mbed_official 129:0182c99221bc 45 {PA_7, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN7
mbed_official 129:0182c99221bc 46 {PB_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN8
mbed_official 129:0182c99221bc 47 {PB_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN9
mbed_official 129:0182c99221bc 48 {PB_12, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN18
mbed_official 129:0182c99221bc 49 {PB_13, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN19
mbed_official 129:0182c99221bc 50 {PB_14, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN20
mbed_official 129:0182c99221bc 51 {PB_15, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN21
mbed_official 129:0182c99221bc 52 {PC_0, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN10
mbed_official 129:0182c99221bc 53 {PC_1, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN11
mbed_official 129:0182c99221bc 54 {PC_2, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN12
mbed_official 129:0182c99221bc 55 {PC_3, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN13
mbed_official 129:0182c99221bc 56 {PC_4, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN14
mbed_official 129:0182c99221bc 57 {PC_5, ADC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // ADC_IN15
mbed_official 129:0182c99221bc 58 {NC, NC, 0}
mbed_official 76:aeb1df146756 59 };
mbed_official 76:aeb1df146756 60
mbed_official 76:aeb1df146756 61 int adc_inited = 0;
mbed_official 76:aeb1df146756 62
mbed_official 76:aeb1df146756 63 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 129:0182c99221bc 64 ADC_TypeDef *adc;
mbed_official 76:aeb1df146756 65 ADC_InitTypeDef ADC_InitStructure;
mbed_official 174:8bb9f3a33240 66
mbed_official 129:0182c99221bc 67 // Get the peripheral name from the pin and assign it to the object
mbed_official 76:aeb1df146756 68 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 227:7bd0639b8911 69 MBED_ASSERT(obj->adc != (ADCName)NC);
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 174:8bb9f3a33240 83
mbed_official 76:aeb1df146756 84 // Enable ADC clock
mbed_official 76:aeb1df146756 85 RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
mbed_official 174:8bb9f3a33240 86
mbed_official 76:aeb1df146756 87 // Configure ADC
mbed_official 76:aeb1df146756 88 ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
mbed_official 76:aeb1df146756 89 ADC_InitStructure.ADC_ScanConvMode = DISABLE;
mbed_official 76:aeb1df146756 90 ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
mbed_official 76:aeb1df146756 91 ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
mbed_official 76:aeb1df146756 92 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;
mbed_official 76:aeb1df146756 93 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
mbed_official 76:aeb1df146756 94 ADC_InitStructure.ADC_NbrOfConversion = 1;
mbed_official 76:aeb1df146756 95 ADC_Init(adc, &ADC_InitStructure);
mbed_official 76:aeb1df146756 96
mbed_official 76:aeb1df146756 97 // Enable ADC
mbed_official 76:aeb1df146756 98 ADC_Cmd(adc, ENABLE);
mbed_official 76:aeb1df146756 99 }
mbed_official 76:aeb1df146756 100 }
mbed_official 76:aeb1df146756 101
mbed_official 76:aeb1df146756 102 static inline uint16_t adc_read(analogin_t *obj) {
mbed_official 174:8bb9f3a33240 103 // Get ADC registers structure address
mbed_official 174:8bb9f3a33240 104 ADC_TypeDef *adc = (ADC_TypeDef *)(obj->adc);
mbed_official 174:8bb9f3a33240 105 uint8_t channel = 0;
mbed_official 76:aeb1df146756 106
mbed_official 174:8bb9f3a33240 107 // Configure ADC channel
mbed_official 174:8bb9f3a33240 108 switch (obj->pin) {
mbed_official 174:8bb9f3a33240 109 case PA_0:
mbed_official 174:8bb9f3a33240 110 channel = ADC_Channel_0;
mbed_official 174:8bb9f3a33240 111 break;
mbed_official 174:8bb9f3a33240 112 case PA_1:
mbed_official 174:8bb9f3a33240 113 channel = ADC_Channel_1;
mbed_official 174:8bb9f3a33240 114 break;
mbed_official 174:8bb9f3a33240 115 case PA_2:
mbed_official 174:8bb9f3a33240 116 channel = ADC_Channel_2;
mbed_official 174:8bb9f3a33240 117 break;
mbed_official 174:8bb9f3a33240 118 case PA_3:
mbed_official 174:8bb9f3a33240 119 channel = ADC_Channel_3;
mbed_official 174:8bb9f3a33240 120 break;
mbed_official 174:8bb9f3a33240 121 case PA_4:
mbed_official 174:8bb9f3a33240 122 channel = ADC_Channel_4;
mbed_official 174:8bb9f3a33240 123 break;
mbed_official 174:8bb9f3a33240 124 case PA_5:
mbed_official 174:8bb9f3a33240 125 channel = ADC_Channel_5;
mbed_official 174:8bb9f3a33240 126 break;
mbed_official 174:8bb9f3a33240 127 case PA_6:
mbed_official 174:8bb9f3a33240 128 channel = ADC_Channel_6;
mbed_official 174:8bb9f3a33240 129 break;
mbed_official 174:8bb9f3a33240 130 case PA_7:
mbed_official 174:8bb9f3a33240 131 channel = ADC_Channel_7;
mbed_official 174:8bb9f3a33240 132 break;
mbed_official 174:8bb9f3a33240 133 case PB_0:
mbed_official 174:8bb9f3a33240 134 channel = ADC_Channel_8;
mbed_official 174:8bb9f3a33240 135 break;
mbed_official 174:8bb9f3a33240 136 case PB_1:
mbed_official 174:8bb9f3a33240 137 channel = ADC_Channel_9;
mbed_official 174:8bb9f3a33240 138 break;
mbed_official 174:8bb9f3a33240 139 case PB_12:
mbed_official 174:8bb9f3a33240 140 channel = ADC_Channel_18;
mbed_official 174:8bb9f3a33240 141 break;
mbed_official 174:8bb9f3a33240 142 case PB_13:
mbed_official 174:8bb9f3a33240 143 channel = ADC_Channel_19;
mbed_official 174:8bb9f3a33240 144 break;
mbed_official 174:8bb9f3a33240 145 case PB_14:
mbed_official 174:8bb9f3a33240 146 channel = ADC_Channel_20;
mbed_official 174:8bb9f3a33240 147 break;
mbed_official 174:8bb9f3a33240 148 case PB_15:
mbed_official 174:8bb9f3a33240 149 channel = ADC_Channel_21;
mbed_official 174:8bb9f3a33240 150 break;
mbed_official 174:8bb9f3a33240 151 case PC_0:
mbed_official 174:8bb9f3a33240 152 channel = ADC_Channel_10;
mbed_official 174:8bb9f3a33240 153 break;
mbed_official 174:8bb9f3a33240 154 case PC_1:
mbed_official 174:8bb9f3a33240 155 channel = ADC_Channel_11;
mbed_official 174:8bb9f3a33240 156 break;
mbed_official 174:8bb9f3a33240 157 case PC_2:
mbed_official 174:8bb9f3a33240 158 channel = ADC_Channel_12;
mbed_official 174:8bb9f3a33240 159 break;
mbed_official 174:8bb9f3a33240 160 case PC_3:
mbed_official 174:8bb9f3a33240 161 channel = ADC_Channel_13;
mbed_official 174:8bb9f3a33240 162 break;
mbed_official 174:8bb9f3a33240 163 case PC_4:
mbed_official 174:8bb9f3a33240 164 channel = ADC_Channel_14;
mbed_official 174:8bb9f3a33240 165 break;
mbed_official 174:8bb9f3a33240 166 case PC_5:
mbed_official 174:8bb9f3a33240 167 channel = ADC_Channel_15;
mbed_official 174:8bb9f3a33240 168 break;
mbed_official 174:8bb9f3a33240 169 default:
mbed_official 174:8bb9f3a33240 170 return 0;
mbed_official 174:8bb9f3a33240 171 }
mbed_official 174:8bb9f3a33240 172
mbed_official 174:8bb9f3a33240 173 ADC_RegularChannelConfig(adc, channel, 1, ADC_SampleTime_4Cycles);
mbed_official 174:8bb9f3a33240 174
mbed_official 174:8bb9f3a33240 175 ADC_SoftwareStartConv(adc); // Start conversion
mbed_official 174:8bb9f3a33240 176
mbed_official 174:8bb9f3a33240 177 while (ADC_GetFlagStatus(adc, ADC_FLAG_EOC) == RESET); // Wait end of conversion
mbed_official 174:8bb9f3a33240 178
mbed_official 174:8bb9f3a33240 179 return (ADC_GetConversionValue(adc)); // Get conversion value
mbed_official 76:aeb1df146756 180 }
mbed_official 76:aeb1df146756 181
mbed_official 76:aeb1df146756 182 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 174:8bb9f3a33240 183 return (adc_read(obj));
mbed_official 76:aeb1df146756 184 }
mbed_official 76:aeb1df146756 185
mbed_official 76:aeb1df146756 186 float analogin_read(analogin_t *obj) {
mbed_official 174:8bb9f3a33240 187 uint16_t value = adc_read(obj);
mbed_official 174:8bb9f3a33240 188 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 76:aeb1df146756 189 }
mbed_official 76:aeb1df146756 190
mbed_official 76:aeb1df146756 191 #endif