mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_F411RE/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:
235:685d5f11838f
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 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 3 * All rights reserved.
mbed_official 235:685d5f11838f 4 *
mbed_official 235:685d5f11838f 5 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 6 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 7 *
mbed_official 235:685d5f11838f 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 9 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 12 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 14 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 15 * without specific prior written permission.
mbed_official 235:685d5f11838f 16 *
mbed_official 235:685d5f11838f 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 27 */
mbed_official 235:685d5f11838f 28 #include "mbed_assert.h"
mbed_official 235:685d5f11838f 29 #include "analogin_api.h"
mbed_official 235:685d5f11838f 30
mbed_official 235:685d5f11838f 31 #if DEVICE_ANALOGIN
mbed_official 235:685d5f11838f 32
mbed_official 235:685d5f11838f 33 #include "wait_api.h"
mbed_official 235:685d5f11838f 34 #include "cmsis.h"
mbed_official 235:685d5f11838f 35 #include "pinmap.h"
mbed_official 235:685d5f11838f 36
mbed_official 235:685d5f11838f 37 static const PinMap PinMap_ADC[] = {
mbed_official 235:685d5f11838f 38 {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0
mbed_official 235:685d5f11838f 39 {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1
mbed_official 235:685d5f11838f 40 {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2
mbed_official 235:685d5f11838f 41 {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3
mbed_official 235:685d5f11838f 42 {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4
mbed_official 235:685d5f11838f 43 {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5
mbed_official 235:685d5f11838f 44 {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6
mbed_official 235:685d5f11838f 45 {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7
mbed_official 235:685d5f11838f 46 {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8
mbed_official 235:685d5f11838f 47 {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9
mbed_official 235:685d5f11838f 48 {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10
mbed_official 235:685d5f11838f 49 {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11
mbed_official 235:685d5f11838f 50 {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12
mbed_official 235:685d5f11838f 51 {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13
mbed_official 235:685d5f11838f 52 {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14
mbed_official 235:685d5f11838f 53 {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15
mbed_official 235:685d5f11838f 54 {NC, NC, 0}
mbed_official 235:685d5f11838f 55 };
mbed_official 235:685d5f11838f 56
mbed_official 235:685d5f11838f 57 ADC_HandleTypeDef AdcHandle;
mbed_official 235:685d5f11838f 58
mbed_official 235:685d5f11838f 59 int adc_inited = 0;
mbed_official 235:685d5f11838f 60
mbed_official 235:685d5f11838f 61 void analogin_init(analogin_t *obj, PinName pin)
mbed_official 235:685d5f11838f 62 {
mbed_official 235:685d5f11838f 63 // Get the peripheral name from the pin and assign it to the object
mbed_official 235:685d5f11838f 64 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 235:685d5f11838f 65 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 235:685d5f11838f 66
mbed_official 235:685d5f11838f 67 // Configure GPIO
mbed_official 235:685d5f11838f 68 pinmap_pinout(pin, PinMap_ADC);
mbed_official 235:685d5f11838f 69
mbed_official 235:685d5f11838f 70 // Save pin number for the read function
mbed_official 235:685d5f11838f 71 obj->pin = pin;
mbed_official 235:685d5f11838f 72
mbed_official 235:685d5f11838f 73 // The ADC initialization is done once
mbed_official 235:685d5f11838f 74 if (adc_inited == 0) {
mbed_official 235:685d5f11838f 75 adc_inited = 1;
mbed_official 235:685d5f11838f 76
mbed_official 235:685d5f11838f 77 // Enable ADC clock
mbed_official 235:685d5f11838f 78 __ADC1_CLK_ENABLE();
mbed_official 235:685d5f11838f 79
mbed_official 235:685d5f11838f 80 // Configure ADC
mbed_official 235:685d5f11838f 81 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 235:685d5f11838f 82 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
mbed_official 235:685d5f11838f 83 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
mbed_official 235:685d5f11838f 84 AdcHandle.Init.ScanConvMode = DISABLE;
mbed_official 235:685d5f11838f 85 AdcHandle.Init.ContinuousConvMode = DISABLE;
mbed_official 235:685d5f11838f 86 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
mbed_official 235:685d5f11838f 87 AdcHandle.Init.NbrOfDiscConversion = 0;
mbed_official 235:685d5f11838f 88 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
mbed_official 235:685d5f11838f 89 AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
mbed_official 235:685d5f11838f 90 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
mbed_official 235:685d5f11838f 91 AdcHandle.Init.NbrOfConversion = 1;
mbed_official 235:685d5f11838f 92 AdcHandle.Init.DMAContinuousRequests = DISABLE;
mbed_official 235:685d5f11838f 93 AdcHandle.Init.EOCSelection = DISABLE;
mbed_official 235:685d5f11838f 94 HAL_ADC_Init(&AdcHandle);
mbed_official 235:685d5f11838f 95 }
mbed_official 235:685d5f11838f 96 }
mbed_official 235:685d5f11838f 97
mbed_official 235:685d5f11838f 98 static inline uint16_t adc_read(analogin_t *obj)
mbed_official 235:685d5f11838f 99 {
mbed_official 235:685d5f11838f 100 ADC_ChannelConfTypeDef sConfig;
mbed_official 235:685d5f11838f 101
mbed_official 235:685d5f11838f 102 AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);
mbed_official 235:685d5f11838f 103
mbed_official 235:685d5f11838f 104 // Configure ADC channel
mbed_official 235:685d5f11838f 105 sConfig.Rank = 1;
mbed_official 235:685d5f11838f 106 sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
mbed_official 235:685d5f11838f 107 sConfig.Offset = 0;
mbed_official 235:685d5f11838f 108
mbed_official 235:685d5f11838f 109 switch (obj->pin) {
mbed_official 235:685d5f11838f 110 case PA_0:
mbed_official 235:685d5f11838f 111 sConfig.Channel = ADC_CHANNEL_0;
mbed_official 235:685d5f11838f 112 break;
mbed_official 235:685d5f11838f 113 case PA_1:
mbed_official 235:685d5f11838f 114 sConfig.Channel = ADC_CHANNEL_1;
mbed_official 235:685d5f11838f 115 break;
mbed_official 235:685d5f11838f 116 case PA_2:
mbed_official 235:685d5f11838f 117 sConfig.Channel = ADC_CHANNEL_2;
mbed_official 235:685d5f11838f 118 break;
mbed_official 235:685d5f11838f 119 case PA_3:
mbed_official 235:685d5f11838f 120 sConfig.Channel = ADC_CHANNEL_3;
mbed_official 235:685d5f11838f 121 break;
mbed_official 235:685d5f11838f 122 case PA_4:
mbed_official 235:685d5f11838f 123 sConfig.Channel = ADC_CHANNEL_4;
mbed_official 235:685d5f11838f 124 break;
mbed_official 235:685d5f11838f 125 case PA_5:
mbed_official 235:685d5f11838f 126 sConfig.Channel = ADC_CHANNEL_5;
mbed_official 235:685d5f11838f 127 break;
mbed_official 235:685d5f11838f 128 case PA_6:
mbed_official 235:685d5f11838f 129 sConfig.Channel = ADC_CHANNEL_6;
mbed_official 235:685d5f11838f 130 break;
mbed_official 235:685d5f11838f 131 case PA_7:
mbed_official 235:685d5f11838f 132 sConfig.Channel = ADC_CHANNEL_7;
mbed_official 235:685d5f11838f 133 break;
mbed_official 235:685d5f11838f 134 case PB_0:
mbed_official 235:685d5f11838f 135 sConfig.Channel = ADC_CHANNEL_8;
mbed_official 235:685d5f11838f 136 break;
mbed_official 235:685d5f11838f 137 case PB_1:
mbed_official 235:685d5f11838f 138 sConfig.Channel = ADC_CHANNEL_9;
mbed_official 235:685d5f11838f 139 break;
mbed_official 235:685d5f11838f 140 case PC_0:
mbed_official 235:685d5f11838f 141 sConfig.Channel = ADC_CHANNEL_10;
mbed_official 235:685d5f11838f 142 break;
mbed_official 235:685d5f11838f 143 case PC_1:
mbed_official 235:685d5f11838f 144 sConfig.Channel = ADC_CHANNEL_11;
mbed_official 235:685d5f11838f 145 break;
mbed_official 235:685d5f11838f 146 case PC_2:
mbed_official 235:685d5f11838f 147 sConfig.Channel = ADC_CHANNEL_12;
mbed_official 235:685d5f11838f 148 break;
mbed_official 235:685d5f11838f 149 case PC_3:
mbed_official 235:685d5f11838f 150 sConfig.Channel = ADC_CHANNEL_13;
mbed_official 235:685d5f11838f 151 break;
mbed_official 235:685d5f11838f 152 case PC_4:
mbed_official 235:685d5f11838f 153 sConfig.Channel = ADC_CHANNEL_14;
mbed_official 235:685d5f11838f 154 break;
mbed_official 235:685d5f11838f 155 case PC_5:
mbed_official 235:685d5f11838f 156 sConfig.Channel = ADC_CHANNEL_15;
mbed_official 235:685d5f11838f 157 break;
mbed_official 235:685d5f11838f 158 default:
mbed_official 235:685d5f11838f 159 return 0;
mbed_official 235:685d5f11838f 160 }
mbed_official 235:685d5f11838f 161
mbed_official 235:685d5f11838f 162 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
mbed_official 235:685d5f11838f 163
mbed_official 235:685d5f11838f 164 HAL_ADC_Start(&AdcHandle); // Start conversion
mbed_official 235:685d5f11838f 165
mbed_official 235:685d5f11838f 166 // Wait end of conversion and get value
mbed_official 235:685d5f11838f 167 if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) {
mbed_official 235:685d5f11838f 168 return (HAL_ADC_GetValue(&AdcHandle));
mbed_official 235:685d5f11838f 169 } else {
mbed_official 235:685d5f11838f 170 return 0;
mbed_official 235:685d5f11838f 171 }
mbed_official 235:685d5f11838f 172 }
mbed_official 235:685d5f11838f 173
mbed_official 235:685d5f11838f 174 uint16_t analogin_read_u16(analogin_t *obj)
mbed_official 235:685d5f11838f 175 {
mbed_official 235:685d5f11838f 176 return (adc_read(obj));
mbed_official 235:685d5f11838f 177 }
mbed_official 235:685d5f11838f 178
mbed_official 235:685d5f11838f 179 float analogin_read(analogin_t *obj)
mbed_official 235:685d5f11838f 180 {
mbed_official 235:685d5f11838f 181 uint16_t value = adc_read(obj);
mbed_official 235:685d5f11838f 182 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 235:685d5f11838f 183 }
mbed_official 235:685d5f11838f 184
mbed_official 235:685d5f11838f 185 #endif