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STM32CubeF7/Projects/STM32756G_EVAL/Examples/TIM/TIM_OCInactive/Src/main.c
Ali Labbene 3600603267 Release v1.15.0
2019-08-05 13:14:59 +01:00

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/**
******************************************************************************
* @file TIM/TIM_OCInactive/Src/main.c
* @author MCD Application Team
* @brief This example shows how to configure the Timer to generate four
* delayed signals.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F7xx_HAL_Examples
* @{
*/
/** @addtogroup TIM_OCInactive
* @{
*/
/* Private typedef -----------------------------------------------------------*/
#define PULSE1_VALUE 10000 /* Capture Compare 1 Value */
#define PULSE2_VALUE 5000 /* Capture Compare 2 Value */
#define PULSE3_VALUE 2500 /* Capture Compare 3 Value */
#define PULSE4_VALUE 1250 /* Capture Compare 4 Value */
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Timer handler declaration */
TIM_HandleTypeDef TimHandle;
/* Timer Output Compare Configuration Structure declaration */
TIM_OC_InitTypeDef sConfig;
/* Counter Prescaler value */
uint32_t uwPrescalerValue = 0;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void Error_Handler(void);
static void CPU_CACHE_Enable(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* STM32F7xx HAL library initialization:
- Configure the Flash ART accelerator on ITCM interface
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 216 MHz */
SystemClock_Config();
/* Enable GPIO Clock */
__HAL_RCC_GPIOB_CLK_ENABLE();
/* Configure the GPIO pins: used to display the 4 wave forms */
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
/* Configure PB.00 to display wave form of channel1 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.01 to display wave form of channel2 */
GPIO_InitStruct.Pin = GPIO_PIN_1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.02 to display wave form of channel3 */
GPIO_InitStruct.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.03 to display wave form of channel4 */
GPIO_InitStruct.Pin = GPIO_PIN_3;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Compute the prescaler value to have TIMx counter clock equal to 10 kHz */
uwPrescalerValue = ((SystemCoreClock) / 10000) - 1;
/*##-1- Configure the TIM peripheral #######################################*/
/* Initialize TIMx peripheral as follow:
+ Prescaler = (SystemCoreClock)/10000 - 1;
+ Period = 65535
+ ClockDivision = 0
+ Counter direction = Up
*/
TimHandle.Instance = TIM1;
TimHandle.Init.Period = 65535;
TimHandle.Init.Prescaler = uwPrescalerValue;
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if(HAL_TIM_OC_Init(&TimHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Configure the Output Compare channels #########################################*/
/* Common configuration for all channels */
sConfig.OCMode = TIM_OCMODE_INACTIVE;
sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
/* Set the pulse (delay1) value for channel 1 */
sConfig.Pulse = PULSE1_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_1) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay2) value for channel 2 */
sConfig.Pulse = PULSE2_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_2) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay3) value for channel 3 */
sConfig.Pulse = PULSE3_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_3) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay4) value for channel 4 */
sConfig.Pulse = PULSE4_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_4) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/*##-3- Set GPIO Pins PB.00, PB.01, PB.02 and PB.03 as reference ###################*/
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, GPIO_PIN_SET);
/*##-4- Start signals generation #######################################*/
/* Start channel 1 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_1) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 2 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_2) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 3 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_3) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 4 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_4) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
while (1)
{
}
}
/**
* @brief Output Compare callback in non blocking mode
* @param htim : TIM OC handle
* @retval None
*/
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
{
/* Reset GPIO Pin PB.00 after 1s */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);
}
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
/* Reset GPIO Pin PB.01 after 500ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
}
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_3)
{
/* Reset GPIO Pin PB.02 after 250ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_RESET);
}
else
{
/* Reset GPIO Pin PB.03 after 125ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, GPIO_PIN_RESET);
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 216000000
* HCLK(Hz) = 216000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 432
* PLL_P = 2
* PLL_Q = 9
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 7
* @param None
* @retval None
*/
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 432;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 9;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Activate the OverDrive to reach the 216 MHz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
if(ret != HAL_OK)
{
while(1) { ; }
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @brief CPU L1-Cache enable.
* @param None
* @retval None
*/
static void CPU_CACHE_Enable(void)
{
/* Enable I-Cache */
SCB_EnableICache();
/* Enable D-Cache */
SCB_EnableDCache();
}
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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