mbed library sources. Supersedes mbed-src. Fixes analogIn and analogOut problems for TARGET_STM32F3. Tested on NUCLEO-F303K8, using 3 analogout and 7 analogin channels simultaneously. Added ability for STM32F334R8 and STM32F303K8 to use all three channels of DAC simultaneously. https://developer.mbed.org/users/StevieWray/code/mbed-dev/ Added ability for TARGET_STM32F3 to use more than one ADC simultaneously. https://developer.mbed.org/questions/67997/NUCLEO-F303K8ADC/
Fork of mbed-dev by
targets/hal/TARGET_STM/TARGET_STM32F3/analogin_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)
- Committer:
- bogdanm
- Date:
- Thu Oct 01 15:25:22 2015 +0300
- Revision:
- 0:9b334a45a8ff
- Child:
- 70:b3a5af880266
Initial commit on mbed-dev
Replaces mbed-src (now inactive)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /* mbed Microcontroller Library |
bogdanm | 0:9b334a45a8ff | 2 | * Copyright (c) 2015, STMicroelectronics |
bogdanm | 0:9b334a45a8ff | 3 | * All rights reserved. |
bogdanm | 0:9b334a45a8ff | 4 | * |
bogdanm | 0:9b334a45a8ff | 5 | * Redistribution and use in source and binary forms, with or without |
bogdanm | 0:9b334a45a8ff | 6 | * modification, are permitted provided that the following conditions are met: |
bogdanm | 0:9b334a45a8ff | 7 | * |
bogdanm | 0:9b334a45a8ff | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 9 | * this list of conditions and the following disclaimer. |
bogdanm | 0:9b334a45a8ff | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 11 | * this list of conditions and the following disclaimer in the documentation |
bogdanm | 0:9b334a45a8ff | 12 | * and/or other materials provided with the distribution. |
bogdanm | 0:9b334a45a8ff | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
bogdanm | 0:9b334a45a8ff | 14 | * may be used to endorse or promote products derived from this software |
bogdanm | 0:9b334a45a8ff | 15 | * without specific prior written permission. |
bogdanm | 0:9b334a45a8ff | 16 | * |
bogdanm | 0:9b334a45a8ff | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
bogdanm | 0:9b334a45a8ff | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
bogdanm | 0:9b334a45a8ff | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
bogdanm | 0:9b334a45a8ff | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
bogdanm | 0:9b334a45a8ff | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
bogdanm | 0:9b334a45a8ff | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
bogdanm | 0:9b334a45a8ff | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
bogdanm | 0:9b334a45a8ff | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
bogdanm | 0:9b334a45a8ff | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
bogdanm | 0:9b334a45a8ff | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
bogdanm | 0:9b334a45a8ff | 27 | */ |
bogdanm | 0:9b334a45a8ff | 28 | #include "mbed_assert.h" |
bogdanm | 0:9b334a45a8ff | 29 | #include "analogin_api.h" |
bogdanm | 0:9b334a45a8ff | 30 | |
bogdanm | 0:9b334a45a8ff | 31 | #if DEVICE_ANALOGIN |
bogdanm | 0:9b334a45a8ff | 32 | |
bogdanm | 0:9b334a45a8ff | 33 | #include "wait_api.h" |
bogdanm | 0:9b334a45a8ff | 34 | #include "cmsis.h" |
bogdanm | 0:9b334a45a8ff | 35 | #include "pinmap.h" |
bogdanm | 0:9b334a45a8ff | 36 | #include "mbed_error.h" |
bogdanm | 0:9b334a45a8ff | 37 | #include "PeripheralPins.h" |
bogdanm | 0:9b334a45a8ff | 38 | |
bogdanm | 0:9b334a45a8ff | 39 | ADC_HandleTypeDef AdcHandle; |
bogdanm | 0:9b334a45a8ff | 40 | |
bogdanm | 0:9b334a45a8ff | 41 | void analogin_init(analogin_t *obj, PinName pin) |
bogdanm | 0:9b334a45a8ff | 42 | { |
bogdanm | 0:9b334a45a8ff | 43 | #if defined(ADC1) |
bogdanm | 0:9b334a45a8ff | 44 | static int adc1_inited = 0; |
bogdanm | 0:9b334a45a8ff | 45 | #endif |
bogdanm | 0:9b334a45a8ff | 46 | #if defined(ADC2) |
bogdanm | 0:9b334a45a8ff | 47 | static int adc2_inited = 0; |
bogdanm | 0:9b334a45a8ff | 48 | #endif |
bogdanm | 0:9b334a45a8ff | 49 | #if defined(ADC3) |
bogdanm | 0:9b334a45a8ff | 50 | static int adc3_inited = 0; |
bogdanm | 0:9b334a45a8ff | 51 | #endif |
bogdanm | 0:9b334a45a8ff | 52 | #if defined(ADC4) |
bogdanm | 0:9b334a45a8ff | 53 | static int adc4_inited = 0; |
bogdanm | 0:9b334a45a8ff | 54 | #endif |
bogdanm | 0:9b334a45a8ff | 55 | |
bogdanm | 0:9b334a45a8ff | 56 | // Get the peripheral name from the pin and assign it to the object |
bogdanm | 0:9b334a45a8ff | 57 | obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); |
bogdanm | 0:9b334a45a8ff | 58 | MBED_ASSERT(obj->adc != (ADCName)NC); |
bogdanm | 0:9b334a45a8ff | 59 | |
bogdanm | 0:9b334a45a8ff | 60 | // Get the pin function and assign the used channel to the object |
bogdanm | 0:9b334a45a8ff | 61 | uint32_t function = pinmap_function(pin, PinMap_ADC); |
bogdanm | 0:9b334a45a8ff | 62 | MBED_ASSERT(function != (uint32_t)NC); |
bogdanm | 0:9b334a45a8ff | 63 | obj->channel = STM_PIN_CHANNEL(function); |
bogdanm | 0:9b334a45a8ff | 64 | |
bogdanm | 0:9b334a45a8ff | 65 | // Configure GPIO |
bogdanm | 0:9b334a45a8ff | 66 | pinmap_pinout(pin, PinMap_ADC); |
bogdanm | 0:9b334a45a8ff | 67 | |
bogdanm | 0:9b334a45a8ff | 68 | // Save pin number for the read function |
bogdanm | 0:9b334a45a8ff | 69 | obj->pin = pin; |
bogdanm | 0:9b334a45a8ff | 70 | |
bogdanm | 0:9b334a45a8ff | 71 | // Check if ADC is already initialized |
bogdanm | 0:9b334a45a8ff | 72 | // Enable ADC clock |
bogdanm | 0:9b334a45a8ff | 73 | #if defined(ADC1) |
bogdanm | 0:9b334a45a8ff | 74 | if ((obj->adc == ADC_1) && adc1_inited) return; |
bogdanm | 0:9b334a45a8ff | 75 | if (obj->adc == ADC_1) { |
bogdanm | 0:9b334a45a8ff | 76 | __ADC1_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 77 | adc1_inited = 1; |
bogdanm | 0:9b334a45a8ff | 78 | } |
bogdanm | 0:9b334a45a8ff | 79 | #endif |
bogdanm | 0:9b334a45a8ff | 80 | #if defined(ADC2) |
bogdanm | 0:9b334a45a8ff | 81 | if ((obj->adc == ADC_2) && adc2_inited) return; |
bogdanm | 0:9b334a45a8ff | 82 | if (obj->adc == ADC_2) { |
bogdanm | 0:9b334a45a8ff | 83 | __ADC2_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 84 | adc2_inited = 1; |
bogdanm | 0:9b334a45a8ff | 85 | } |
bogdanm | 0:9b334a45a8ff | 86 | #endif |
bogdanm | 0:9b334a45a8ff | 87 | #if defined(ADC3) |
bogdanm | 0:9b334a45a8ff | 88 | if ((obj->adc == ADC_3) && adc3_inited) return; |
bogdanm | 0:9b334a45a8ff | 89 | if (obj->adc == ADC_3) { |
bogdanm | 0:9b334a45a8ff | 90 | __ADC34_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 91 | adc3_inited = 1; |
bogdanm | 0:9b334a45a8ff | 92 | } |
bogdanm | 0:9b334a45a8ff | 93 | #endif |
bogdanm | 0:9b334a45a8ff | 94 | #if defined(ADC4) |
bogdanm | 0:9b334a45a8ff | 95 | if ((obj->adc == ADC_4) && adc4_inited) return; |
bogdanm | 0:9b334a45a8ff | 96 | if (obj->adc == ADC_4) { |
bogdanm | 0:9b334a45a8ff | 97 | __ADC34_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 98 | adc4_inited = 1; |
bogdanm | 0:9b334a45a8ff | 99 | } |
bogdanm | 0:9b334a45a8ff | 100 | #endif |
bogdanm | 0:9b334a45a8ff | 101 | |
bogdanm | 0:9b334a45a8ff | 102 | // Configure ADC |
bogdanm | 0:9b334a45a8ff | 103 | AdcHandle.Instance = (ADC_TypeDef *)(obj->adc); |
bogdanm | 0:9b334a45a8ff | 104 | AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; |
bogdanm | 0:9b334a45a8ff | 105 | AdcHandle.Init.Resolution = ADC_RESOLUTION12b; |
bogdanm | 0:9b334a45a8ff | 106 | AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT; |
bogdanm | 0:9b334a45a8ff | 107 | AdcHandle.Init.ScanConvMode = DISABLE; |
bogdanm | 0:9b334a45a8ff | 108 | AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV; |
bogdanm | 0:9b334a45a8ff | 109 | AdcHandle.Init.LowPowerAutoWait = DISABLE; |
bogdanm | 0:9b334a45a8ff | 110 | AdcHandle.Init.ContinuousConvMode = DISABLE; |
bogdanm | 0:9b334a45a8ff | 111 | AdcHandle.Init.NbrOfConversion = 1; |
bogdanm | 0:9b334a45a8ff | 112 | AdcHandle.Init.DiscontinuousConvMode = DISABLE; |
bogdanm | 0:9b334a45a8ff | 113 | AdcHandle.Init.NbrOfDiscConversion = 0; |
bogdanm | 0:9b334a45a8ff | 114 | AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1; |
bogdanm | 0:9b334a45a8ff | 115 | AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; |
bogdanm | 0:9b334a45a8ff | 116 | AdcHandle.Init.DMAContinuousRequests = DISABLE; |
bogdanm | 0:9b334a45a8ff | 117 | AdcHandle.Init.Overrun = OVR_DATA_OVERWRITTEN; |
bogdanm | 0:9b334a45a8ff | 118 | |
bogdanm | 0:9b334a45a8ff | 119 | if (HAL_ADC_Init(&AdcHandle) != HAL_OK) { |
bogdanm | 0:9b334a45a8ff | 120 | error("Cannot initialize ADC"); |
bogdanm | 0:9b334a45a8ff | 121 | } |
bogdanm | 0:9b334a45a8ff | 122 | } |
bogdanm | 0:9b334a45a8ff | 123 | |
bogdanm | 0:9b334a45a8ff | 124 | static inline uint16_t adc_read(analogin_t *obj) |
bogdanm | 0:9b334a45a8ff | 125 | { |
bogdanm | 0:9b334a45a8ff | 126 | ADC_ChannelConfTypeDef sConfig = {0}; |
bogdanm | 0:9b334a45a8ff | 127 | |
bogdanm | 0:9b334a45a8ff | 128 | AdcHandle.Instance = (ADC_TypeDef *)(obj->adc); |
bogdanm | 0:9b334a45a8ff | 129 | |
bogdanm | 0:9b334a45a8ff | 130 | // Configure ADC channel |
bogdanm | 0:9b334a45a8ff | 131 | sConfig.Rank = ADC_REGULAR_RANK_1; |
bogdanm | 0:9b334a45a8ff | 132 | sConfig.SamplingTime = ADC_SAMPLETIME_19CYCLES_5; |
bogdanm | 0:9b334a45a8ff | 133 | sConfig.SingleDiff = ADC_SINGLE_ENDED; |
bogdanm | 0:9b334a45a8ff | 134 | sConfig.OffsetNumber = ADC_OFFSET_NONE; |
bogdanm | 0:9b334a45a8ff | 135 | sConfig.Offset = 0; |
bogdanm | 0:9b334a45a8ff | 136 | |
bogdanm | 0:9b334a45a8ff | 137 | switch (obj->channel) { |
bogdanm | 0:9b334a45a8ff | 138 | case 1: |
bogdanm | 0:9b334a45a8ff | 139 | sConfig.Channel = ADC_CHANNEL_1; |
bogdanm | 0:9b334a45a8ff | 140 | break; |
bogdanm | 0:9b334a45a8ff | 141 | case 2: |
bogdanm | 0:9b334a45a8ff | 142 | sConfig.Channel = ADC_CHANNEL_2; |
bogdanm | 0:9b334a45a8ff | 143 | break; |
bogdanm | 0:9b334a45a8ff | 144 | case 3: |
bogdanm | 0:9b334a45a8ff | 145 | sConfig.Channel = ADC_CHANNEL_3; |
bogdanm | 0:9b334a45a8ff | 146 | break; |
bogdanm | 0:9b334a45a8ff | 147 | case 4: |
bogdanm | 0:9b334a45a8ff | 148 | sConfig.Channel = ADC_CHANNEL_4; |
bogdanm | 0:9b334a45a8ff | 149 | break; |
bogdanm | 0:9b334a45a8ff | 150 | case 5: |
bogdanm | 0:9b334a45a8ff | 151 | sConfig.Channel = ADC_CHANNEL_5; |
bogdanm | 0:9b334a45a8ff | 152 | break; |
bogdanm | 0:9b334a45a8ff | 153 | case 6: |
bogdanm | 0:9b334a45a8ff | 154 | sConfig.Channel = ADC_CHANNEL_6; |
bogdanm | 0:9b334a45a8ff | 155 | break; |
bogdanm | 0:9b334a45a8ff | 156 | case 7: |
bogdanm | 0:9b334a45a8ff | 157 | sConfig.Channel = ADC_CHANNEL_7; |
bogdanm | 0:9b334a45a8ff | 158 | break; |
bogdanm | 0:9b334a45a8ff | 159 | case 8: |
bogdanm | 0:9b334a45a8ff | 160 | sConfig.Channel = ADC_CHANNEL_8; |
bogdanm | 0:9b334a45a8ff | 161 | break; |
bogdanm | 0:9b334a45a8ff | 162 | case 9: |
bogdanm | 0:9b334a45a8ff | 163 | sConfig.Channel = ADC_CHANNEL_9; |
bogdanm | 0:9b334a45a8ff | 164 | break; |
bogdanm | 0:9b334a45a8ff | 165 | case 10: |
bogdanm | 0:9b334a45a8ff | 166 | sConfig.Channel = ADC_CHANNEL_10; |
bogdanm | 0:9b334a45a8ff | 167 | break; |
bogdanm | 0:9b334a45a8ff | 168 | case 11: |
bogdanm | 0:9b334a45a8ff | 169 | sConfig.Channel = ADC_CHANNEL_11; |
bogdanm | 0:9b334a45a8ff | 170 | break; |
bogdanm | 0:9b334a45a8ff | 171 | case 12: |
bogdanm | 0:9b334a45a8ff | 172 | sConfig.Channel = ADC_CHANNEL_12; |
bogdanm | 0:9b334a45a8ff | 173 | break; |
bogdanm | 0:9b334a45a8ff | 174 | case 13: |
bogdanm | 0:9b334a45a8ff | 175 | sConfig.Channel = ADC_CHANNEL_13; |
bogdanm | 0:9b334a45a8ff | 176 | break; |
bogdanm | 0:9b334a45a8ff | 177 | case 14: |
bogdanm | 0:9b334a45a8ff | 178 | sConfig.Channel = ADC_CHANNEL_14; |
bogdanm | 0:9b334a45a8ff | 179 | break; |
bogdanm | 0:9b334a45a8ff | 180 | case 15: |
bogdanm | 0:9b334a45a8ff | 181 | sConfig.Channel = ADC_CHANNEL_15; |
bogdanm | 0:9b334a45a8ff | 182 | break; |
bogdanm | 0:9b334a45a8ff | 183 | case 16: |
bogdanm | 0:9b334a45a8ff | 184 | sConfig.Channel = ADC_CHANNEL_16; |
bogdanm | 0:9b334a45a8ff | 185 | break; |
bogdanm | 0:9b334a45a8ff | 186 | case 17: |
bogdanm | 0:9b334a45a8ff | 187 | sConfig.Channel = ADC_CHANNEL_17; |
bogdanm | 0:9b334a45a8ff | 188 | break; |
bogdanm | 0:9b334a45a8ff | 189 | case 18: |
bogdanm | 0:9b334a45a8ff | 190 | sConfig.Channel = ADC_CHANNEL_18; |
bogdanm | 0:9b334a45a8ff | 191 | break; |
bogdanm | 0:9b334a45a8ff | 192 | default: |
bogdanm | 0:9b334a45a8ff | 193 | return 0; |
bogdanm | 0:9b334a45a8ff | 194 | } |
bogdanm | 0:9b334a45a8ff | 195 | |
bogdanm | 0:9b334a45a8ff | 196 | HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); |
bogdanm | 0:9b334a45a8ff | 197 | |
bogdanm | 0:9b334a45a8ff | 198 | HAL_ADC_Start(&AdcHandle); // Start conversion |
bogdanm | 0:9b334a45a8ff | 199 | |
bogdanm | 0:9b334a45a8ff | 200 | // Wait end of conversion and get value |
bogdanm | 0:9b334a45a8ff | 201 | if (HAL_ADC_PollForConversion(&AdcHandle, 10) == HAL_OK) { |
bogdanm | 0:9b334a45a8ff | 202 | return (HAL_ADC_GetValue(&AdcHandle)); |
bogdanm | 0:9b334a45a8ff | 203 | } else { |
bogdanm | 0:9b334a45a8ff | 204 | return 0; |
bogdanm | 0:9b334a45a8ff | 205 | } |
bogdanm | 0:9b334a45a8ff | 206 | } |
bogdanm | 0:9b334a45a8ff | 207 | |
bogdanm | 0:9b334a45a8ff | 208 | uint16_t analogin_read_u16(analogin_t *obj) |
bogdanm | 0:9b334a45a8ff | 209 | { |
bogdanm | 0:9b334a45a8ff | 210 | uint16_t value = adc_read(obj); |
bogdanm | 0:9b334a45a8ff | 211 | // 12-bit to 16-bit conversion |
bogdanm | 0:9b334a45a8ff | 212 | value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F); |
bogdanm | 0:9b334a45a8ff | 213 | return value; |
bogdanm | 0:9b334a45a8ff | 214 | } |
bogdanm | 0:9b334a45a8ff | 215 | |
bogdanm | 0:9b334a45a8ff | 216 | float analogin_read(analogin_t *obj) |
bogdanm | 0:9b334a45a8ff | 217 | { |
bogdanm | 0:9b334a45a8ff | 218 | uint16_t value = adc_read(obj); |
bogdanm | 0:9b334a45a8ff | 219 | return (float)value * (1.0f / (float)0xFFF); // 12 bits range |
bogdanm | 0:9b334a45a8ff | 220 | } |
bogdanm | 0:9b334a45a8ff | 221 | |
bogdanm | 0:9b334a45a8ff | 222 | #endif |