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https://github.com/STMicroelectronics/STM32CubeF1.git
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342 lines
10 KiB
C
342 lines
10 KiB
C
/**
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******************************************************************************
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* @file DAC/DAC_SignalsGeneration/Src/main.c
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* @author MCD Application Team
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* @brief This example provides a short description of how to use the DAC
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* peripheral to generate several signals.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F1xx_HAL_Examples
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* @{
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*/
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/** @addtogroup DAC_SignalsGeneration
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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DAC_HandleTypeDef DacHandle;
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static DAC_ChannelConfTypeDef sConfig;
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const uint8_t aEscalator8bit[6] = {0x0, 0x33, 0x66, 0x99, 0xCC, 0xFF};
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__IO uint8_t ubSelectedWavesForm = 1;
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__IO uint8_t ubKeyPressed = SET;
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/* Private function prototypes -----------------------------------------------*/
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static void DAC_Ch1_TriangleConfig(void);
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static void DAC_Ch1_EscalatorConfig(void);
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static void TIM6_Config(void);
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void SystemClock_Config(void);
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static void Error_Handler(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program.
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F107xC HAL library initialization:
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- Configure the Flash prefetch
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- Systick timer is configured by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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- Set NVIC Group Priority to 4
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- Low Level Initialization
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*/
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HAL_Init();
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/* Configure the system clock to 72 MHz */
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SystemClock_Config();
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/* Configure LED3 */
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BSP_LED_Init(LED3);
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/* Configures Key push-button */
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BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
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/*##-1- Configure the DAC peripheral #######################################*/
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DacHandle.Instance = DACx;
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/*##-2- Configure the TIM peripheral #######################################*/
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TIM6_Config();
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/* Infinite loop */
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while (1)
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{
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/* If the Key is pressed */
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if (ubKeyPressed != RESET)
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{
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HAL_DAC_DeInit(&DacHandle);
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/* select waves forms according to the Key push-button status */
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if (ubSelectedWavesForm == 1)
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{
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/* The triangle wave has been selected */
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/* Triangle Wave generator -------------------------------------------*/
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DAC_Ch1_TriangleConfig();
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}
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else
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{
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/* The escalator wave has been selected */
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/* Escalator Wave generator -------------------------------------------*/
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DAC_Ch1_EscalatorConfig();
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}
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ubKeyPressed = RESET;
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}
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}
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 72000000
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* HCLK(Hz) = 72000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 2
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* APB2 Prescaler = 1
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* HSE Frequency(Hz) = 25000000
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* HSE PREDIV1 = 5
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* HSE PREDIV2 = 5
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* PLL2MUL = 8
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* Flash Latency(WS) = 2
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* @param None
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef clkinitstruct = {0};
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RCC_OscInitTypeDef oscinitstruct = {0};
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/* Configure PLLs ------------------------------------------------------*/
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/* PLL2 configuration: PLL2CLK = (HSE / HSEPrediv2Value) * PLL2MUL = (25 / 5) * 8 = 40 MHz */
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/* PREDIV1 configuration: PREDIV1CLK = PLL2CLK / HSEPredivValue = 40 / 5 = 8 MHz */
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/* PLL configuration: PLLCLK = PREDIV1CLK * PLLMUL = 8 * 9 = 72 MHz */
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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oscinitstruct.HSEState = RCC_HSE_ON;
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oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV5;
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oscinitstruct.Prediv1Source = RCC_PREDIV1_SOURCE_PLL2;
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oscinitstruct.PLL.PLLState = RCC_PLL_ON;
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oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL9;
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oscinitstruct.PLL2.PLL2State = RCC_PLL2_ON;
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oscinitstruct.PLL2.PLL2MUL = RCC_PLL2_MUL8;
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oscinitstruct.PLL2.HSEPrediv2Value = RCC_HSE_PREDIV2_DIV5;
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if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
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clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;
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if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while(1)
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{
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}
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}
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static void DAC_Ch1_EscalatorConfig(void)
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{
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/*##-1- Initialize the DAC peripheral ######################################*/
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if (HAL_DAC_Init(&DacHandle) != HAL_OK)
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{
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/* Initialization Error */
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Error_Handler();
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}
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/*##-1- DAC channel1 Configuration #########################################*/
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sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
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sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
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if (HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DACx_CHANNEL) != HAL_OK)
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{
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/* Channel configuration Error */
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Error_Handler();
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}
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/*##-2- Enable DAC selected channel and associated DMA #############################*/
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if (HAL_DAC_Start_DMA(&DacHandle, DACx_CHANNEL, (uint32_t *)aEscalator8bit, 6, DAC_ALIGN_8B_R) != HAL_OK)
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{
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/* Start DMA Error */
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Error_Handler();
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}
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}
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/**
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* @brief DAC Channel1 Triangle Configuration
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* @param None
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* @retval None
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*/
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static void DAC_Ch1_TriangleConfig(void)
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{
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/*##-1- Initialize the DAC peripheral ######################################*/
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if (HAL_DAC_Init(&DacHandle) != HAL_OK)
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{
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/* DAC initialization Error */
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Error_Handler();
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}
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/*##-2- DAC channel2 Configuration #########################################*/
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sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
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sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
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if (HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DACx_CHANNEL) != HAL_OK)
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{
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/* Channel configuration Error */
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Error_Handler();
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}
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/*##-3- DAC channel2 Triangle Wave generation configuration ################*/
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if (HAL_DACEx_TriangleWaveGenerate(&DacHandle, DACx_CHANNEL, DAC_TRIANGLEAMPLITUDE_1023) != HAL_OK)
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{
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/* Triangle wave generation Error */
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Error_Handler();
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}
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/*##-4- Enable DAC Channel1 ################################################*/
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if (HAL_DAC_Start(&DacHandle, DACx_CHANNEL) != HAL_OK)
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{
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/* Start Error */
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Error_Handler();
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}
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/*##-5- Set DAC channel1 DHR12RD register ################################################*/
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if (HAL_DAC_SetValue(&DacHandle, DACx_CHANNEL, DAC_ALIGN_12B_R, 0x100) != HAL_OK)
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{
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/* Setting value Error */
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Error_Handler();
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}
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}
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/**
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* @brief EXTI line detection callbacks
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* @param GPIO_Pin: Specifies the pins connected EXTI line
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* @retval None
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*/
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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/* Change the wave */
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ubKeyPressed = 1;
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/* Change the selected waves forms */
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ubSelectedWavesForm = !ubSelectedWavesForm;
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}
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/**
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* @brief TIM6 Configuration
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* @note TIM6 configuration is based on APB1 frequency
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* @note TIM6 Update event occurs each TIM6CLK/256
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* @param None
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* @retval None
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*/
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void TIM6_Config(void)
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{
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static TIM_HandleTypeDef htim;
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TIM_MasterConfigTypeDef sMasterConfig;
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/*##-1- Configure the TIM peripheral #######################################*/
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/* Time base configuration */
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htim.Instance = TIM6;
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htim.Init.Period = 0x7FF;
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htim.Init.Prescaler = 0;
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htim.Init.ClockDivision = 0;
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htim.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim.Init.RepetitionCounter = 0;
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htim.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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HAL_TIM_Base_Init(&htim);
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/* TIM6 TRGO selection */
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sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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HAL_TIMEx_MasterConfigSynchronization(&htim, &sMasterConfig);
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/*##-2- Enable TIM peripheral counter ######################################*/
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HAL_TIM_Base_Start(&htim);
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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