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/*
* dac.c
*
* Created on: Apr 13, 2022
* Author: bruce
*/
#include "dac.h"
#include "main.h"
#include "stm32l4xx.h"
DAC_HandleTypeDef hdac1;
/**
* @brief DAC MSP Initialization
* This function configures the hardware resources used in this example
* @param hdac: DAC handle pointer
* @retval None
*/
void HAL_DAC_MspInit(DAC_HandleTypeDef* hdac)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hdac->Instance==DAC1)
{
__HAL_RCC_DAC1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
}
/**
* @brief DAC MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hdac: DAC handle pointer
* @retval None
*/
void HAL_DAC_MspDeInit(DAC_HandleTypeDef* hdac)
{
if(hdac->Instance==DAC1)
{
__HAL_RCC_DAC1_CLK_DISABLE();
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4);
}
}
void DAC_Init () {
DAC_ChannelConfTypeDef sConfig = {0};
/** DAC Initialization
*/
hdac1.Instance = DAC1;
if (HAL_DAC_Init(&hdac1) != HAL_OK)
{
Error_Handler();
}
/** DAC channel OUT1 config
*/
sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_DISABLE;
sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONNECT_DISABLE;
sConfig.DAC_UserTrimming = DAC_TRIMMING_FACTORY;
if (HAL_DAC_ConfigChannel(&hdac1, &sConfig, DAC_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
}
void DAC_Start () {
HAL_DAC_Start (&hdac1, DAC_CHANNEL_1);
}
void DAC_Set_Value (uint32_t value) {
HAL_DAC_SetValue (&hdac1, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
}
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