Initial commit
mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/analogout_device.c@0:bb348c97df44, 2020-09-16 (annotated)
- Committer:
- lypinator
- Date:
- Wed Sep 16 01:11:49 2020 +0000
- Revision:
- 0:bb348c97df44
Added PWM
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lypinator | 0:bb348c97df44 | 1 | /* mbed Microcontroller Library |
lypinator | 0:bb348c97df44 | 2 | * Copyright (c) 2015, STMicroelectronics |
lypinator | 0:bb348c97df44 | 3 | * All rights reserved. |
lypinator | 0:bb348c97df44 | 4 | * |
lypinator | 0:bb348c97df44 | 5 | * Redistribution and use in source and binary forms, with or without |
lypinator | 0:bb348c97df44 | 6 | * modification, are permitted provided that the following conditions are met: |
lypinator | 0:bb348c97df44 | 7 | * |
lypinator | 0:bb348c97df44 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
lypinator | 0:bb348c97df44 | 9 | * this list of conditions and the following disclaimer. |
lypinator | 0:bb348c97df44 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
lypinator | 0:bb348c97df44 | 11 | * this list of conditions and the following disclaimer in the documentation |
lypinator | 0:bb348c97df44 | 12 | * and/or other materials provided with the distribution. |
lypinator | 0:bb348c97df44 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
lypinator | 0:bb348c97df44 | 14 | * may be used to endorse or promote products derived from this software |
lypinator | 0:bb348c97df44 | 15 | * without specific prior written permission. |
lypinator | 0:bb348c97df44 | 16 | * |
lypinator | 0:bb348c97df44 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
lypinator | 0:bb348c97df44 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
lypinator | 0:bb348c97df44 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
lypinator | 0:bb348c97df44 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
lypinator | 0:bb348c97df44 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
lypinator | 0:bb348c97df44 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
lypinator | 0:bb348c97df44 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
lypinator | 0:bb348c97df44 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
lypinator | 0:bb348c97df44 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
lypinator | 0:bb348c97df44 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
lypinator | 0:bb348c97df44 | 27 | */ |
lypinator | 0:bb348c97df44 | 28 | #include "analogout_api.h" |
lypinator | 0:bb348c97df44 | 29 | |
lypinator | 0:bb348c97df44 | 30 | #if DEVICE_ANALOGOUT |
lypinator | 0:bb348c97df44 | 31 | |
lypinator | 0:bb348c97df44 | 32 | #include "cmsis.h" |
lypinator | 0:bb348c97df44 | 33 | #include "pinmap.h" |
lypinator | 0:bb348c97df44 | 34 | #include "mbed_error.h" |
lypinator | 0:bb348c97df44 | 35 | #include "stm32f4xx_hal.h" |
lypinator | 0:bb348c97df44 | 36 | #include "PeripheralPins.h" |
lypinator | 0:bb348c97df44 | 37 | |
lypinator | 0:bb348c97df44 | 38 | void analogout_init(dac_t *obj, PinName pin) |
lypinator | 0:bb348c97df44 | 39 | { |
lypinator | 0:bb348c97df44 | 40 | DAC_ChannelConfTypeDef sConfig = {0}; |
lypinator | 0:bb348c97df44 | 41 | |
lypinator | 0:bb348c97df44 | 42 | // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object |
lypinator | 0:bb348c97df44 | 43 | obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); |
lypinator | 0:bb348c97df44 | 44 | // Get the functions (dac channel) from the pin and assign it to the object |
lypinator | 0:bb348c97df44 | 45 | uint32_t function = pinmap_function(pin, PinMap_DAC); |
lypinator | 0:bb348c97df44 | 46 | MBED_ASSERT(function != (uint32_t)NC); |
lypinator | 0:bb348c97df44 | 47 | |
lypinator | 0:bb348c97df44 | 48 | // Save the channel for the write and read functions |
lypinator | 0:bb348c97df44 | 49 | switch (STM_PIN_CHANNEL(function)) { |
lypinator | 0:bb348c97df44 | 50 | case 1: |
lypinator | 0:bb348c97df44 | 51 | obj->channel = DAC_CHANNEL_1; |
lypinator | 0:bb348c97df44 | 52 | break; |
lypinator | 0:bb348c97df44 | 53 | #if defined(DAC_CHANNEL_2) |
lypinator | 0:bb348c97df44 | 54 | case 2: |
lypinator | 0:bb348c97df44 | 55 | obj->channel = DAC_CHANNEL_2; |
lypinator | 0:bb348c97df44 | 56 | break; |
lypinator | 0:bb348c97df44 | 57 | #endif |
lypinator | 0:bb348c97df44 | 58 | default: |
lypinator | 0:bb348c97df44 | 59 | error("Unknown DAC channel"); |
lypinator | 0:bb348c97df44 | 60 | break; |
lypinator | 0:bb348c97df44 | 61 | } |
lypinator | 0:bb348c97df44 | 62 | |
lypinator | 0:bb348c97df44 | 63 | if (obj->dac == (DACName)NC) { |
lypinator | 0:bb348c97df44 | 64 | error("DAC pin mapping failed"); |
lypinator | 0:bb348c97df44 | 65 | } |
lypinator | 0:bb348c97df44 | 66 | |
lypinator | 0:bb348c97df44 | 67 | // Configure GPIO |
lypinator | 0:bb348c97df44 | 68 | pinmap_pinout(pin, PinMap_DAC); |
lypinator | 0:bb348c97df44 | 69 | |
lypinator | 0:bb348c97df44 | 70 | __HAL_RCC_GPIOA_CLK_ENABLE(); |
lypinator | 0:bb348c97df44 | 71 | |
lypinator | 0:bb348c97df44 | 72 | __HAL_RCC_DAC_CLK_ENABLE(); |
lypinator | 0:bb348c97df44 | 73 | |
lypinator | 0:bb348c97df44 | 74 | obj->handle.Instance = DAC; |
lypinator | 0:bb348c97df44 | 75 | obj->handle.State = HAL_DAC_STATE_RESET; |
lypinator | 0:bb348c97df44 | 76 | |
lypinator | 0:bb348c97df44 | 77 | if (HAL_DAC_Init(&obj->handle) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 78 | error("HAL_DAC_Init failed"); |
lypinator | 0:bb348c97df44 | 79 | } |
lypinator | 0:bb348c97df44 | 80 | |
lypinator | 0:bb348c97df44 | 81 | sConfig.DAC_Trigger = DAC_TRIGGER_NONE; |
lypinator | 0:bb348c97df44 | 82 | sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE; |
lypinator | 0:bb348c97df44 | 83 | |
lypinator | 0:bb348c97df44 | 84 | if (HAL_DAC_ConfigChannel(&obj->handle, &sConfig, obj->channel) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 85 | error("HAL_DAC_ConfigChannel failed"); |
lypinator | 0:bb348c97df44 | 86 | } |
lypinator | 0:bb348c97df44 | 87 | |
lypinator | 0:bb348c97df44 | 88 | analogout_write_u16(obj, 0); |
lypinator | 0:bb348c97df44 | 89 | } |
lypinator | 0:bb348c97df44 | 90 | |
lypinator | 0:bb348c97df44 | 91 | void analogout_free(dac_t *obj) |
lypinator | 0:bb348c97df44 | 92 | { |
lypinator | 0:bb348c97df44 | 93 | } |
lypinator | 0:bb348c97df44 | 94 | |
lypinator | 0:bb348c97df44 | 95 | #endif // DEVICE_ANALOGOUT |