Thomas Lyp / DevLibMemoryController

Initial commit

Dependencies:   FastPWM

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?

UserRevisionLine numberNew 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