mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-01 22:17:30 +08:00
351 lines
12 KiB
C
351 lines
12 KiB
C
/**
|
|
******************************************************************************
|
|
* @file TIM/TIM_OCInactive/Src/main.c
|
|
* @author MCD Application Team
|
|
* @brief This sample code shows how to use STM32F4xx TIM HAL API to generate
|
|
* 4 signals in PWM.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "main.h"
|
|
|
|
/** @addtogroup STM32F4xx_HAL_Examples
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup TIM_OCInactive
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
#define PULSE1_VALUE 1000 /* Capture Compare 1 Value */
|
|
#define PULSE2_VALUE 500 /* Capture Compare 2 Value */
|
|
#define PULSE3_VALUE 250 /* Capture Compare 3 Value */
|
|
#define PULSE4_VALUE 125 /* 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 -----------------------------------------------*/
|
|
static void SystemClock_Config(void);
|
|
static void Error_Handler(void);
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/**
|
|
* @brief Main program
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
int main(void)
|
|
{
|
|
/* STM32F4xx HAL library initialization:
|
|
- Configure the Flash prefetch, instruction and Data caches
|
|
- Configure the Systick to generate an interrupt each 1 msec
|
|
- Set NVIC Group Priority to 4
|
|
- Global MSP (MCU Support Package) initialization
|
|
*/
|
|
HAL_Init();
|
|
|
|
/* Configure the system clock to 180 MHz */
|
|
SystemClock_Config();
|
|
|
|
/* Configure LED1, LED2, LED3 and LED4 */
|
|
BSP_LED_Init(LED1);
|
|
BSP_LED_Init(LED2);
|
|
BSP_LED_Init(LED3);
|
|
BSP_LED_Init(LED4);
|
|
|
|
/* Compute the prescaler value to have TIMx counter clock equal to 2 KHz */
|
|
uwPrescalerValue = ((SystemCoreClock /2) / 2000) - 1;
|
|
|
|
/*##-1- Configure the TIM peripheral #######################################*/
|
|
/* ---------------------------------------------------------------
|
|
TIM2 Configuration: Output Compare Inactive Mode:
|
|
In this example TIM2 input clock (TIM2CLK) is set to 2 * APB1 clock (PCLK1),
|
|
since APB1 prescaler is different from 1.
|
|
TIM2CLK = 2 * PCLK1
|
|
PCLK1 = HCLK / 4
|
|
=> TIM2CLK = HCLK / 2 = SystemCoreClock /2
|
|
|
|
To get TIM2 counter clock at 2 KHz, the prescaler is computed as follows:
|
|
Prescaler = (TIM2CLK / TIM2 counter clock) - 1
|
|
Prescaler = ((SystemCoreClock /2) /2 KHz) - 1
|
|
|
|
Generate 4 signals with 4 different delays:
|
|
TIM2_CH1 delay = uhCCR1_Val/TIM2 counter clock = 500 ms
|
|
TIM2_CH2 delay = uhCCR2_Val/TIM2 counter clock = 250 ms
|
|
TIM2_CH3 delay = uhCCR3_Val/TIM2 counter clock = 125 ms
|
|
TIM2_CH4 delay = uhCCR4_Val/TIM2 counter clock = 62.5 ms
|
|
|
|
Note:
|
|
SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f4xx.c file.
|
|
Each time the core clock (HCLK) changes, user had to update SystemCoreClock
|
|
variable value. Otherwise, any configuration based on this variable will be incorrect.
|
|
This variable is updated in three ways:
|
|
1) by calling CMSIS function SystemCoreClockUpdate()
|
|
2) by calling HAL API function HAL_RCC_GetSysClockFreq()
|
|
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
|
|
--------------------------------------------------------------- */
|
|
|
|
/* Initialize TIMx peripheral as follow:
|
|
+ Prescaler = (SystemCoreClock/2)/2000
|
|
+ Period = 65535
|
|
+ ClockDivision = 0
|
|
+ Counter direction = Up
|
|
*/
|
|
TimHandle.Instance = TIMx;
|
|
|
|
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- Turn on LED1, LED2, LED3 and LED4 ##################################*/
|
|
BSP_LED_On(LED1);
|
|
BSP_LED_On(LED2);
|
|
BSP_LED_On(LED3);
|
|
BSP_LED_On(LED4);
|
|
|
|
/*##-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();
|
|
}
|
|
|
|
/* Infinite loop */
|
|
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)
|
|
{
|
|
/* LED1 turn-off after 500 ms */
|
|
BSP_LED_Off(LED1);
|
|
}
|
|
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
|
|
{
|
|
/* LED2 turn-off after 250 ms */
|
|
BSP_LED_Off(LED2);
|
|
}
|
|
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_3)
|
|
{
|
|
/* LED3 turn-off after 125 ms */
|
|
BSP_LED_Off(LED3);
|
|
}
|
|
else
|
|
{
|
|
/* LED4 turn-off after 62.5 ms */
|
|
BSP_LED_Off(LED4);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief This function is executed in case of error occurrence.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void Error_Handler(void)
|
|
{
|
|
/* Turn LED3 on */
|
|
BSP_LED_On(LED3);
|
|
while(1)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief System Clock Configuration
|
|
* The system Clock is configured as follow :
|
|
* System Clock source = PLL (HSE)
|
|
* SYSCLK(Hz) = 180000000
|
|
* HCLK(Hz) = 180000000
|
|
* AHB Prescaler = 1
|
|
* APB1 Prescaler = 4
|
|
* APB2 Prescaler = 2
|
|
* HSE Frequency(Hz) = 25000000
|
|
* PLL_M = 25
|
|
* PLL_N = 360
|
|
* PLL_P = 2
|
|
* PLL_Q = 7
|
|
* VDD(V) = 3.3
|
|
* Main regulator output voltage = Scale1 mode
|
|
* Flash Latency(WS) = 5
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void SystemClock_Config(void)
|
|
{
|
|
RCC_ClkInitTypeDef RCC_ClkInitStruct;
|
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|
|
|
/* Enable Power Control clock */
|
|
__HAL_RCC_PWR_CLK_ENABLE();
|
|
|
|
/* The voltage scaling allows optimizing the power consumption when the device is
|
|
clocked below the maximum system frequency, to update the voltage scaling value
|
|
regarding system frequency refer to product datasheet. */
|
|
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
|
|
|
|
/* 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 = 360;
|
|
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
|
|
RCC_OscInitStruct.PLL.PLLQ = 7;
|
|
HAL_RCC_OscConfig(&RCC_OscInitStruct);
|
|
|
|
/* Activate the Over-Drive mode */
|
|
HAL_PWREx_EnableOverDrive();
|
|
|
|
/* 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;
|
|
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
|
|
}
|
|
|
|
#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
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|