mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_STM32F407VG/analogin_api.c@296:ec1b66a3d094, 2014-08-21 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Aug 21 15:00:08 2014 +0100
- Revision:
- 296:ec1b66a3d094
- Parent:
- targets/hal/TARGET_STM/TARGET_DISCO_F407VG/analogin_api.c@242:7074e42da0b2
Synchronized with git revision bbc120c4786e99dfa586e7a13f8638064f1e5938
Full URL: https://github.com/mbedmicro/mbed/commit/bbc120c4786e99dfa586e7a13f8638064f1e5938/
DISCO_F407VG - add USBDevice support and a variant - ARCH_MAX
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 133:d4dda5c437f0 | 1 | /* mbed Microcontroller Library |
mbed_official | 133:d4dda5c437f0 | 2 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 133:d4dda5c437f0 | 3 | * All rights reserved. |
mbed_official | 133:d4dda5c437f0 | 4 | * |
mbed_official | 133:d4dda5c437f0 | 5 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 133:d4dda5c437f0 | 6 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 133:d4dda5c437f0 | 7 | * |
mbed_official | 133:d4dda5c437f0 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 133:d4dda5c437f0 | 9 | * this list of conditions and the following disclaimer. |
mbed_official | 133:d4dda5c437f0 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 133:d4dda5c437f0 | 11 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 133:d4dda5c437f0 | 12 | * and/or other materials provided with the distribution. |
mbed_official | 133:d4dda5c437f0 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 133:d4dda5c437f0 | 14 | * may be used to endorse or promote products derived from this software |
mbed_official | 133:d4dda5c437f0 | 15 | * without specific prior written permission. |
mbed_official | 133:d4dda5c437f0 | 16 | * |
mbed_official | 133:d4dda5c437f0 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 133:d4dda5c437f0 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 133:d4dda5c437f0 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 133:d4dda5c437f0 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 133:d4dda5c437f0 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 133:d4dda5c437f0 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 133:d4dda5c437f0 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 133:d4dda5c437f0 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 133:d4dda5c437f0 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 133:d4dda5c437f0 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 133:d4dda5c437f0 | 27 | */ |
mbed_official | 242:7074e42da0b2 | 28 | #include "mbed_assert.h" |
mbed_official | 133:d4dda5c437f0 | 29 | #include "analogin_api.h" |
mbed_official | 133:d4dda5c437f0 | 30 | |
mbed_official | 133:d4dda5c437f0 | 31 | #if DEVICE_ANALOGIN |
mbed_official | 133:d4dda5c437f0 | 32 | |
mbed_official | 242:7074e42da0b2 | 33 | #include "wait_api.h" |
mbed_official | 133:d4dda5c437f0 | 34 | #include "cmsis.h" |
mbed_official | 133:d4dda5c437f0 | 35 | #include "pinmap.h" |
mbed_official | 133:d4dda5c437f0 | 36 | |
mbed_official | 133:d4dda5c437f0 | 37 | static const PinMap PinMap_ADC[] = { |
mbed_official | 133:d4dda5c437f0 | 38 | {PA_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN0 |
mbed_official | 133:d4dda5c437f0 | 39 | {PA_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN1 |
mbed_official | 133:d4dda5c437f0 | 40 | {PA_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN2 |
mbed_official | 133:d4dda5c437f0 | 41 | {PA_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN3 |
mbed_official | 133:d4dda5c437f0 | 42 | {PA_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN4 |
mbed_official | 133:d4dda5c437f0 | 43 | {PA_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN5 |
mbed_official | 242:7074e42da0b2 | 44 | {PA_6, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN6 |
mbed_official | 242:7074e42da0b2 | 45 | {PA_7, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN7 |
mbed_official | 133:d4dda5c437f0 | 46 | {PB_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN8 |
mbed_official | 133:d4dda5c437f0 | 47 | {PB_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN9 |
mbed_official | 133:d4dda5c437f0 | 48 | {PC_0, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN10 |
mbed_official | 133:d4dda5c437f0 | 49 | {PC_1, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN11 |
mbed_official | 133:d4dda5c437f0 | 50 | {PC_2, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN12 |
mbed_official | 133:d4dda5c437f0 | 51 | {PC_3, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN13 |
mbed_official | 133:d4dda5c437f0 | 52 | {PC_4, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN14 |
mbed_official | 133:d4dda5c437f0 | 53 | {PC_5, ADC_1, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0)}, // ADC1_IN15 |
mbed_official | 133:d4dda5c437f0 | 54 | {NC, NC, 0} |
mbed_official | 133:d4dda5c437f0 | 55 | }; |
mbed_official | 133:d4dda5c437f0 | 56 | |
mbed_official | 133:d4dda5c437f0 | 57 | ADC_HandleTypeDef AdcHandle; |
mbed_official | 133:d4dda5c437f0 | 58 | |
mbed_official | 133:d4dda5c437f0 | 59 | int adc_inited = 0; |
mbed_official | 133:d4dda5c437f0 | 60 | |
mbed_official | 227:7bd0639b8911 | 61 | void analogin_init(analogin_t *obj, PinName pin) { |
mbed_official | 242:7074e42da0b2 | 62 | // Get the peripheral name from the pin and assign it to the object |
mbed_official | 133:d4dda5c437f0 | 63 | obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); |
mbed_official | 227:7bd0639b8911 | 64 | MBED_ASSERT(obj->adc != (ADCName)NC); |
mbed_official | 133:d4dda5c437f0 | 65 | |
mbed_official | 133:d4dda5c437f0 | 66 | // Configure GPIO |
mbed_official | 133:d4dda5c437f0 | 67 | pinmap_pinout(pin, PinMap_ADC); |
mbed_official | 133:d4dda5c437f0 | 68 | |
mbed_official | 133:d4dda5c437f0 | 69 | // Save pin number for the read function |
mbed_official | 133:d4dda5c437f0 | 70 | obj->pin = pin; |
mbed_official | 133:d4dda5c437f0 | 71 | |
mbed_official | 133:d4dda5c437f0 | 72 | // The ADC initialization is done once |
mbed_official | 133:d4dda5c437f0 | 73 | if (adc_inited == 0) { |
mbed_official | 133:d4dda5c437f0 | 74 | adc_inited = 1; |
mbed_official | 133:d4dda5c437f0 | 75 | |
mbed_official | 133:d4dda5c437f0 | 76 | // Enable ADC clock |
mbed_official | 133:d4dda5c437f0 | 77 | __ADC1_CLK_ENABLE(); |
mbed_official | 133:d4dda5c437f0 | 78 | |
mbed_official | 133:d4dda5c437f0 | 79 | // Configure ADC |
mbed_official | 133:d4dda5c437f0 | 80 | AdcHandle.Instance = (ADC_TypeDef *)(obj->adc); |
mbed_official | 133:d4dda5c437f0 | 81 | AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; |
mbed_official | 133:d4dda5c437f0 | 82 | AdcHandle.Init.Resolution = ADC_RESOLUTION12b; |
mbed_official | 133:d4dda5c437f0 | 83 | AdcHandle.Init.ScanConvMode = DISABLE; |
mbed_official | 133:d4dda5c437f0 | 84 | AdcHandle.Init.ContinuousConvMode = DISABLE; |
mbed_official | 133:d4dda5c437f0 | 85 | AdcHandle.Init.DiscontinuousConvMode = DISABLE; |
mbed_official | 133:d4dda5c437f0 | 86 | AdcHandle.Init.NbrOfDiscConversion = 0; |
mbed_official | 133:d4dda5c437f0 | 87 | AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; |
mbed_official | 133:d4dda5c437f0 | 88 | AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1; |
mbed_official | 133:d4dda5c437f0 | 89 | AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT; |
mbed_official | 133:d4dda5c437f0 | 90 | AdcHandle.Init.NbrOfConversion = 1; |
mbed_official | 133:d4dda5c437f0 | 91 | AdcHandle.Init.DMAContinuousRequests = DISABLE; |
mbed_official | 227:7bd0639b8911 | 92 | AdcHandle.Init.EOCSelection = DISABLE; |
mbed_official | 227:7bd0639b8911 | 93 | HAL_ADC_Init(&AdcHandle); |
mbed_official | 133:d4dda5c437f0 | 94 | } |
mbed_official | 133:d4dda5c437f0 | 95 | } |
mbed_official | 133:d4dda5c437f0 | 96 | |
mbed_official | 133:d4dda5c437f0 | 97 | static inline uint16_t adc_read(analogin_t *obj) { |
mbed_official | 133:d4dda5c437f0 | 98 | ADC_ChannelConfTypeDef sConfig; |
mbed_official | 133:d4dda5c437f0 | 99 | |
mbed_official | 133:d4dda5c437f0 | 100 | AdcHandle.Instance = (ADC_TypeDef *)(obj->adc); |
mbed_official | 133:d4dda5c437f0 | 101 | |
mbed_official | 133:d4dda5c437f0 | 102 | // Configure ADC channel |
mbed_official | 133:d4dda5c437f0 | 103 | sConfig.Rank = 1; |
mbed_official | 133:d4dda5c437f0 | 104 | sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; |
mbed_official | 133:d4dda5c437f0 | 105 | sConfig.Offset = 0; |
mbed_official | 133:d4dda5c437f0 | 106 | |
mbed_official | 133:d4dda5c437f0 | 107 | switch (obj->pin) { |
mbed_official | 133:d4dda5c437f0 | 108 | case PA_0: |
mbed_official | 133:d4dda5c437f0 | 109 | sConfig.Channel = ADC_CHANNEL_0; |
mbed_official | 133:d4dda5c437f0 | 110 | break; |
mbed_official | 133:d4dda5c437f0 | 111 | case PA_1: |
mbed_official | 133:d4dda5c437f0 | 112 | sConfig.Channel = ADC_CHANNEL_1; |
mbed_official | 133:d4dda5c437f0 | 113 | break; |
mbed_official | 133:d4dda5c437f0 | 114 | case PA_2: |
mbed_official | 133:d4dda5c437f0 | 115 | sConfig.Channel = ADC_CHANNEL_2; |
mbed_official | 133:d4dda5c437f0 | 116 | break; |
mbed_official | 133:d4dda5c437f0 | 117 | case PA_3: |
mbed_official | 133:d4dda5c437f0 | 118 | sConfig.Channel = ADC_CHANNEL_3; |
mbed_official | 227:7bd0639b8911 | 119 | break; |
mbed_official | 133:d4dda5c437f0 | 120 | case PA_4: |
mbed_official | 133:d4dda5c437f0 | 121 | sConfig.Channel = ADC_CHANNEL_4; |
mbed_official | 133:d4dda5c437f0 | 122 | break; |
mbed_official | 133:d4dda5c437f0 | 123 | case PA_5: |
mbed_official | 133:d4dda5c437f0 | 124 | sConfig.Channel = ADC_CHANNEL_5; |
mbed_official | 133:d4dda5c437f0 | 125 | break; |
mbed_official | 133:d4dda5c437f0 | 126 | case PA_6: |
mbed_official | 133:d4dda5c437f0 | 127 | sConfig.Channel = ADC_CHANNEL_6; |
mbed_official | 133:d4dda5c437f0 | 128 | break; |
mbed_official | 133:d4dda5c437f0 | 129 | case PA_7: |
mbed_official | 133:d4dda5c437f0 | 130 | sConfig.Channel = ADC_CHANNEL_7; |
mbed_official | 227:7bd0639b8911 | 131 | break; |
mbed_official | 133:d4dda5c437f0 | 132 | case PB_0: |
mbed_official | 133:d4dda5c437f0 | 133 | sConfig.Channel = ADC_CHANNEL_8; |
mbed_official | 133:d4dda5c437f0 | 134 | break; |
mbed_official | 133:d4dda5c437f0 | 135 | case PB_1: |
mbed_official | 133:d4dda5c437f0 | 136 | sConfig.Channel = ADC_CHANNEL_9; |
mbed_official | 227:7bd0639b8911 | 137 | break; |
mbed_official | 133:d4dda5c437f0 | 138 | case PC_0: |
mbed_official | 133:d4dda5c437f0 | 139 | sConfig.Channel = ADC_CHANNEL_10; |
mbed_official | 133:d4dda5c437f0 | 140 | break; |
mbed_official | 133:d4dda5c437f0 | 141 | case PC_1: |
mbed_official | 133:d4dda5c437f0 | 142 | sConfig.Channel = ADC_CHANNEL_11; |
mbed_official | 133:d4dda5c437f0 | 143 | break; |
mbed_official | 133:d4dda5c437f0 | 144 | case PC_2: |
mbed_official | 133:d4dda5c437f0 | 145 | sConfig.Channel = ADC_CHANNEL_12; |
mbed_official | 133:d4dda5c437f0 | 146 | break; |
mbed_official | 133:d4dda5c437f0 | 147 | case PC_3: |
mbed_official | 133:d4dda5c437f0 | 148 | sConfig.Channel = ADC_CHANNEL_13; |
mbed_official | 133:d4dda5c437f0 | 149 | break; |
mbed_official | 133:d4dda5c437f0 | 150 | case PC_4: |
mbed_official | 133:d4dda5c437f0 | 151 | sConfig.Channel = ADC_CHANNEL_14; |
mbed_official | 133:d4dda5c437f0 | 152 | break; |
mbed_official | 133:d4dda5c437f0 | 153 | case PC_5: |
mbed_official | 133:d4dda5c437f0 | 154 | sConfig.Channel = ADC_CHANNEL_15; |
mbed_official | 227:7bd0639b8911 | 155 | break; |
mbed_official | 133:d4dda5c437f0 | 156 | default: |
mbed_official | 133:d4dda5c437f0 | 157 | return 0; |
mbed_official | 133:d4dda5c437f0 | 158 | } |
mbed_official | 133:d4dda5c437f0 | 159 | |
mbed_official | 133:d4dda5c437f0 | 160 | HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); |
mbed_official | 133:d4dda5c437f0 | 161 | |
mbed_official | 133:d4dda5c437f0 | 162 | HAL_ADC_Start(&AdcHandle); // Start conversion |
mbed_official | 133:d4dda5c437f0 | 163 | |
mbed_official | 242:7074e42da0b2 | 164 | // Wait end of conversion and get value |
mbed_official | 242:7074e42da0b2 | 165 | if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) { |
mbed_official | 242:7074e42da0b2 | 166 | return (HAL_ADC_GetValue(&AdcHandle)); |
mbed_official | 242:7074e42da0b2 | 167 | } else { |
mbed_official | 133:d4dda5c437f0 | 168 | return 0; |
mbed_official | 133:d4dda5c437f0 | 169 | } |
mbed_official | 133:d4dda5c437f0 | 170 | } |
mbed_official | 133:d4dda5c437f0 | 171 | |
mbed_official | 133:d4dda5c437f0 | 172 | uint16_t analogin_read_u16(analogin_t *obj) { |
mbed_official | 242:7074e42da0b2 | 173 | return (adc_read(obj)); |
mbed_official | 133:d4dda5c437f0 | 174 | } |
mbed_official | 133:d4dda5c437f0 | 175 | |
mbed_official | 133:d4dda5c437f0 | 176 | float analogin_read(analogin_t *obj) { |
mbed_official | 133:d4dda5c437f0 | 177 | uint16_t value = adc_read(obj); |
mbed_official | 133:d4dda5c437f0 | 178 | return (float)value * (1.0f / (float)0xFFF); // 12 bits range |
mbed_official | 133:d4dda5c437f0 | 179 | } |
mbed_official | 133:d4dda5c437f0 | 180 | |
mbed_official | 133:d4dda5c437f0 | 181 | #endif |