Amit Gandhi / mbed-dev

test

Fork of mbed-dev by mbed official

targets/TARGET_STM/TARGET_STM32F4/analogout_device.c@177:447f873cad2f, 2017-10-25 (annotated)

Committer:
AnnaBridge
Date:
Wed Oct 25 14:53:38 2017 +0100
Revision:
177:447f873cad2f
Parent:
169:9672193075cf 
This updates the lib to the mbed lib v 154

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 169:9672193075cf 1 /* mbed Microcontroller Library
AnnaBridge 169:9672193075cf 2 * Copyright (c) 2015, STMicroelectronics
AnnaBridge 169:9672193075cf 3 * All rights reserved.
AnnaBridge 169:9672193075cf 4 *
AnnaBridge 169:9672193075cf 5 * Redistribution and use in source and binary forms, with or without
AnnaBridge 169:9672193075cf 6 * modification, are permitted provided that the following conditions are met:
AnnaBridge 169:9672193075cf 7 *
AnnaBridge 169:9672193075cf 8 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 169:9672193075cf 9 * this list of conditions and the following disclaimer.
AnnaBridge 169:9672193075cf 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 169:9672193075cf 11 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 169:9672193075cf 12 * and/or other materials provided with the distribution.
AnnaBridge 169:9672193075cf 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 169:9672193075cf 14 * may be used to endorse or promote products derived from this software
AnnaBridge 169:9672193075cf 15 * without specific prior written permission.
AnnaBridge 169:9672193075cf 16 *
AnnaBridge 169:9672193075cf 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 169:9672193075cf 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 169:9672193075cf 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 169:9672193075cf 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 169:9672193075cf 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 169:9672193075cf 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 169:9672193075cf 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 169:9672193075cf 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 169:9672193075cf 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 169:9672193075cf 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 169:9672193075cf 27 */
AnnaBridge 169:9672193075cf 28 #include "analogout_api.h"
AnnaBridge 169:9672193075cf 29
AnnaBridge 169:9672193075cf 30 #if DEVICE_ANALOGOUT
AnnaBridge 169:9672193075cf 31
AnnaBridge 169:9672193075cf 32 #include "cmsis.h"
AnnaBridge 169:9672193075cf 33 #include "pinmap.h"
AnnaBridge 169:9672193075cf 34 #include "mbed_error.h"
AnnaBridge 169:9672193075cf 35 #include "stm32f4xx_hal.h"
AnnaBridge 169:9672193075cf 36 #include "PeripheralPins.h"
AnnaBridge 169:9672193075cf 37
AnnaBridge 169:9672193075cf 38 void analogout_init(dac_t *obj, PinName pin) {
AnnaBridge 177:447f873cad2f 39 DAC_ChannelConfTypeDef sConfig = {0};
AnnaBridge 169:9672193075cf 40
AnnaBridge 169:9672193075cf 41 // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
AnnaBridge 169:9672193075cf 42 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
AnnaBridge 169:9672193075cf 43 // Get the functions (dac channel) from the pin and assign it to the object
AnnaBridge 169:9672193075cf 44 uint32_t function = pinmap_function(pin, PinMap_DAC);
AnnaBridge 169:9672193075cf 45 MBED_ASSERT(function != (uint32_t)NC);
AnnaBridge 169:9672193075cf 46
AnnaBridge 169:9672193075cf 47 // Save the channel for the write and read functions
AnnaBridge 169:9672193075cf 48 switch (STM_PIN_CHANNEL(function)) {
AnnaBridge 169:9672193075cf 49 case 1:
AnnaBridge 169:9672193075cf 50 obj->channel = DAC_CHANNEL_1;
AnnaBridge 169:9672193075cf 51 break;
AnnaBridge 169:9672193075cf 52 #if defined(DAC_CHANNEL_2)
AnnaBridge 169:9672193075cf 53 case 2:
AnnaBridge 169:9672193075cf 54 obj->channel = DAC_CHANNEL_2;
AnnaBridge 169:9672193075cf 55 break;
AnnaBridge 169:9672193075cf 56 #endif
AnnaBridge 169:9672193075cf 57 default:
AnnaBridge 169:9672193075cf 58 error("Unknown DAC channel");
AnnaBridge 169:9672193075cf 59 break;
AnnaBridge 169:9672193075cf 60 }
AnnaBridge 169:9672193075cf 61
AnnaBridge 169:9672193075cf 62 if (obj->dac == (DACName)NC) {
AnnaBridge 169:9672193075cf 63 error("DAC pin mapping failed");
AnnaBridge 169:9672193075cf 64 }
AnnaBridge 169:9672193075cf 65
AnnaBridge 169:9672193075cf 66 // Configure GPIO
AnnaBridge 169:9672193075cf 67 pinmap_pinout(pin, PinMap_DAC);
AnnaBridge 169:9672193075cf 68
AnnaBridge 169:9672193075cf 69 __HAL_RCC_GPIOA_CLK_ENABLE();
AnnaBridge 169:9672193075cf 70
AnnaBridge 169:9672193075cf 71 __HAL_RCC_DAC_CLK_ENABLE();
AnnaBridge 169:9672193075cf 72
AnnaBridge 169:9672193075cf 73 obj->handle.Instance = DAC;
AnnaBridge 177:447f873cad2f 74 obj->handle.State = HAL_DAC_STATE_RESET;
AnnaBridge 177:447f873cad2f 75
AnnaBridge 169:9672193075cf 76 if (HAL_DAC_Init(&obj->handle) != HAL_OK ) {
AnnaBridge 169:9672193075cf 77 error("HAL_DAC_Init failed");
AnnaBridge 169:9672193075cf 78 }
AnnaBridge 169:9672193075cf 79
AnnaBridge 169:9672193075cf 80 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
AnnaBridge 169:9672193075cf 81 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
AnnaBridge 169:9672193075cf 82
AnnaBridge 169:9672193075cf 83 if (HAL_DAC_ConfigChannel(&obj->handle, &sConfig, obj->channel) != HAL_OK) {
AnnaBridge 169:9672193075cf 84 error("HAL_DAC_ConfigChannel failed");
AnnaBridge 169:9672193075cf 85 }
AnnaBridge 169:9672193075cf 86
AnnaBridge 169:9672193075cf 87 analogout_write_u16(obj, 0);
AnnaBridge 169:9672193075cf 88 }
AnnaBridge 169:9672193075cf 89
AnnaBridge 169:9672193075cf 90 void analogout_free(dac_t *obj) {
AnnaBridge 169:9672193075cf 91 }
AnnaBridge 169:9672193075cf 92
AnnaBridge 169:9672193075cf 93 #endif // DEVICE_ANALOGOUT