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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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_F401RE/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 87:085cde657901 1 /* mbed Microcontroller Library
mbed_official 87:085cde657901 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 87:085cde657901 3 * All rights reserved.
mbed_official 87:085cde657901 4 *
mbed_official 87:085cde657901 5 * Redistribution and use in source and binary forms, with or without
mbed_official 87:085cde657901 6 * modification, are permitted provided that the following conditions are met:
mbed_official 87:085cde657901 7 *
mbed_official 87:085cde657901 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 87:085cde657901 9 * this list of conditions and the following disclaimer.
mbed_official 87:085cde657901 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 87:085cde657901 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 87:085cde657901 12 * and/or other materials provided with the distribution.
mbed_official 87:085cde657901 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 87:085cde657901 14 * may be used to endorse or promote products derived from this software
mbed_official 87:085cde657901 15 * without specific prior written permission.
mbed_official 87:085cde657901 16 *
mbed_official 87:085cde657901 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 87:085cde657901 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 87:085cde657901 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 87:085cde657901 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 87:085cde657901 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 87:085cde657901 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 87:085cde657901 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 87:085cde657901 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 87:085cde657901 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 87:085cde657901 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 87:085cde657901 27 */
mbed_official 227:7bd0639b8911 28 #include "mbed_assert.h"
mbed_official 87:085cde657901 29 #include "analogin_api.h"
mbed_official 87:085cde657901 30
mbed_official 87:085cde657901 31 #if DEVICE_ANALOGIN
mbed_official 87:085cde657901 32
mbed_official 172:2f4f8c56b261 33 #include "wait_api.h"
mbed_official 87:085cde657901 34 #include "cmsis.h"
mbed_official 87:085cde657901 35 #include "pinmap.h"
mbed_official 87:085cde657901 36
mbed_official 87:085cde657901 37 static const PinMap PinMap_ADC[] = {
mbed_official 87:085cde657901 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 87:085cde657901 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 125:23cc3068a9e4 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 125:23cc3068a9e4 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 87:085cde657901 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 125:23cc3068a9e4 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 186:2e805bf06ee4 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 186:2e805bf06ee4 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 87:085cde657901 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 125:23cc3068a9e4 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 125:23cc3068a9e4 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 87:085cde657901 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 125:23cc3068a9e4 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 125:23cc3068a9e4 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 125:23cc3068a9e4 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 125:23cc3068a9e4 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 87:085cde657901 54 {NC, NC, 0}
mbed_official 87:085cde657901 55 };
mbed_official 87:085cde657901 56
mbed_official 87:085cde657901 57 ADC_HandleTypeDef AdcHandle;
mbed_official 87:085cde657901 58
mbed_official 87:085cde657901 59 int adc_inited = 0;
mbed_official 87:085cde657901 60
mbed_official 172:2f4f8c56b261 61 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 172:2f4f8c56b261 62 // Get the peripheral name from the pin and assign it to the object
mbed_official 87:085cde657901 63 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 227:7bd0639b8911 64 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 87:085cde657901 65
mbed_official 87:085cde657901 66 // Configure GPIO
mbed_official 87:085cde657901 67 pinmap_pinout(pin, PinMap_ADC);
mbed_official 87:085cde657901 68
mbed_official 87:085cde657901 69 // Save pin number for the read function
mbed_official 87:085cde657901 70 obj->pin = pin;
mbed_official 87:085cde657901 71
mbed_official 87:085cde657901 72 // The ADC initialization is done once
mbed_official 87:085cde657901 73 if (adc_inited == 0) {
mbed_official 87:085cde657901 74 adc_inited = 1;
mbed_official 172:2f4f8c56b261 75
mbed_official 87:085cde657901 76 // Enable ADC clock
mbed_official 87:085cde657901 77 __ADC1_CLK_ENABLE();
mbed_official 87:085cde657901 78
mbed_official 87:085cde657901 79 // Configure ADC
mbed_official 87:085cde657901 80 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 87:085cde657901 81 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
mbed_official 87:085cde657901 82 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 87:085cde657901 83 AdcHandle.Init.ScanConvMode = DISABLE;
mbed_official 87:085cde657901 84 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 87:085cde657901 85 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 87:085cde657901 86 AdcHandle.Init.NbrOfDiscConversion = 0;
mbed_official 87:085cde657901 87 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
mbed_official 87:085cde657901 88 AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
mbed_official 87:085cde657901 89 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 87:085cde657901 90 AdcHandle.Init.NbrOfConversion = 1;
mbed_official 87:085cde657901 91 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 172:2f4f8c56b261 92 AdcHandle.Init.EOCSelection = DISABLE;
mbed_official 172:2f4f8c56b261 93 HAL_ADC_Init(&AdcHandle);
mbed_official 87:085cde657901 94 }
mbed_official 87:085cde657901 95 }
mbed_official 87:085cde657901 96
mbed_official 87:085cde657901 97 static inline uint16_t adc_read(analogin_t *obj) {
mbed_official 172:2f4f8c56b261 98 ADC_ChannelConfTypeDef sConfig;
mbed_official 172:2f4f8c56b261 99
mbed_official 172:2f4f8c56b261 100 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 87:085cde657901 101
mbed_official 172:2f4f8c56b261 102 // Configure ADC channel
mbed_official 172:2f4f8c56b261 103 sConfig.Rank = 1;
mbed_official 172:2f4f8c56b261 104 sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
mbed_official 172:2f4f8c56b261 105 sConfig.Offset = 0;
mbed_official 87:085cde657901 106
mbed_official 172:2f4f8c56b261 107 switch (obj->pin) {
mbed_official 172:2f4f8c56b261 108 case PA_0:
mbed_official 172:2f4f8c56b261 109 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 172:2f4f8c56b261 110 break;
mbed_official 172:2f4f8c56b261 111 case PA_1:
mbed_official 172:2f4f8c56b261 112 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 172:2f4f8c56b261 113 break;
mbed_official 172:2f4f8c56b261 114 case PA_2:
mbed_official 172:2f4f8c56b261 115 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 172:2f4f8c56b261 116 break;
mbed_official 172:2f4f8c56b261 117 case PA_3:
mbed_official 172:2f4f8c56b261 118 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 172:2f4f8c56b261 119 break;
mbed_official 172:2f4f8c56b261 120 case PA_4:
mbed_official 172:2f4f8c56b261 121 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 172:2f4f8c56b261 122 break;
mbed_official 172:2f4f8c56b261 123 case PA_5:
mbed_official 172:2f4f8c56b261 124 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 172:2f4f8c56b261 125 break;
mbed_official 172:2f4f8c56b261 126 case PA_6:
mbed_official 172:2f4f8c56b261 127 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 172:2f4f8c56b261 128 break;
mbed_official 172:2f4f8c56b261 129 case PA_7:
mbed_official 172:2f4f8c56b261 130 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 172:2f4f8c56b261 131 break;
mbed_official 172:2f4f8c56b261 132 case PB_0:
mbed_official 172:2f4f8c56b261 133 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 172:2f4f8c56b261 134 break;
mbed_official 172:2f4f8c56b261 135 case PB_1:
mbed_official 172:2f4f8c56b261 136 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 172:2f4f8c56b261 137 break;
mbed_official 172:2f4f8c56b261 138 case PC_0:
mbed_official 172:2f4f8c56b261 139 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 172:2f4f8c56b261 140 break;
mbed_official 172:2f4f8c56b261 141 case PC_1:
mbed_official 172:2f4f8c56b261 142 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 172:2f4f8c56b261 143 break;
mbed_official 172:2f4f8c56b261 144 case PC_2:
mbed_official 172:2f4f8c56b261 145 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 172:2f4f8c56b261 146 break;
mbed_official 172:2f4f8c56b261 147 case PC_3:
mbed_official 172:2f4f8c56b261 148 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 172:2f4f8c56b261 149 break;
mbed_official 172:2f4f8c56b261 150 case PC_4:
mbed_official 172:2f4f8c56b261 151 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 172:2f4f8c56b261 152 break;
mbed_official 172:2f4f8c56b261 153 case PC_5:
mbed_official 172:2f4f8c56b261 154 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 172:2f4f8c56b261 155 break;
mbed_official 172:2f4f8c56b261 156 default:
mbed_official 172:2f4f8c56b261 157 return 0;
mbed_official 172:2f4f8c56b261 158 }
mbed_official 172:2f4f8c56b261 159
mbed_official 172:2f4f8c56b261 160 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 172:2f4f8c56b261 161
mbed_official 172:2f4f8c56b261 162 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 172:2f4f8c56b261 163
mbed_official 172:2f4f8c56b261 164 // Wait end of conversion and get value
mbed_official 172:2f4f8c56b261 165 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 172:2f4f8c56b261 166 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 172:2f4f8c56b261 167 } else {
mbed_official 172:2f4f8c56b261 168 return 0;
mbed_official 172:2f4f8c56b261 169 }
mbed_official 87:085cde657901 170 }
mbed_official 87:085cde657901 171
mbed_official 87:085cde657901 172 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 172:2f4f8c56b261 173 return (adc_read(obj));
mbed_official 87:085cde657901 174 }
mbed_official 87:085cde657901 175
mbed_official 87:085cde657901 176 float analogin_read(analogin_t *obj) {
mbed_official 172:2f4f8c56b261 177 uint16_t value = adc_read(obj);
mbed_official 172:2f4f8c56b261 178 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 87:085cde657901 179 }
mbed_official 87:085cde657901 180
mbed_official 87:085cde657901 181 #endif