STM32F4DISCOVERY Timers Compare Match Interrupt Issue

[Yadav]

Posted on June 16, 2018 at 13:49

Dear All,

   I am working on STM32F4Doscovery board timers. I want to make a timer interrupt for an application. It can be 1sec or 500ms interrupt. I have read the datasheet and written the program accordingly. But i dont know how to use interrupt in STM32. I have tried something, but nothing is happening. Can someone suggest me a solution??

&sharpinclude 'stm32f4xx.h'

// Component selection

void GPIO_Init(void);

void tim10_init(void);

int main(void)

{

GPIO_Init();

tim10_init();

while (1)

{

GPIOD->ODR|=(1<<15);

}

}

void GPIO_Init(void)

{

RCC->AHB1ENR|=RCC_AHB1ENR_GPIODEN;

GPIOD->MODER|=(1<<28); // pin 14 is output

GPIOD->OTYPER&=~(1<<14);//pin 14 as push pull

GPIOD->OSPEEDR|=(1<<29)|(1<<28);//LOW speed

GPIOD->PUPDR&=~(1<<29)|(1<<28);//No push pull

GPIOD->MODER|=(1<<30); // pin 15 is output

GPIOD->OTYPER&=~(1<<15);//pin 15 as push pull

GPIOD->OSPEEDR|=(1<<30)|(1<<31);//LOW speed

GPIOD->PUPDR&=~(1<<30)|(1<<31);//No push pull

}

void tim10_init(void)

{

RCC->APB2ENR|=(1<<17);

TIM10->CR1|=(1<<7);

TIM10->DIER|=(1<<1);

TIM10->SR|=(1<<1);

TIM10->EGR|=(1<<1);

TIM10->CCMR1|=(1<<3)|(0<<1)|(0<<0);

TIM10->CCER|=(1<<0);

//TIM10->CCR1=5;

TIM10->PSC|=4200;

TIM10->ARR|=1000;

NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn);

}

void TIM10_IRQHandler(void)

{

GPIOD->ODR|=(1<<14);

}

#stm32f4-d #learning-stm32

[waclawek.jan]

Posted on June 16, 2018 at 14:12

Please don't post the same request into multiple threads.

void TIM10_IRQHandler(void)

There is probably no such. Look at the vector table in the startup file.

It's most probably

void TIM1_UP_TIM10_IRQHandler(void)

Also, you need to check whether the respective bit in TIM10->SR is set and clear it by writing 1 into it (don't use |= ).

Also, a stylistic recommendation: using constants defined in the CMSIS-mandated header instead of numeric constants may result in a more readable source.

JW

[Yadav]

Posted on June 17, 2018 at 04:19

 ,

 ,

>,>,There is probably no such. Look at the vector table in the startup file.

>,>,It's most probably

>,>,void TIM1_UP_TIM10_IRQHandler(void)

Hi.. I tried it. Now timer interrupt is working well. but while loop is not executing. What would be the issue ?

If i comment this ->, NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn), while loop is executing. But if i enable it, interrupt is working but while loop is not.

♯ include 'stm32f4xx.h'

 ,

// Component selection

 ,

void GPIO_Init(void),

void tim10_init(void),

 ,

int main(void)

 ,

{

 ,

GPIO_Init(),

 ,

tim10_init(),

 ,

while (1)

 ,

{

GPIOD->,ODR|=(1<,<,15),

 ,

 ,

}

}

 ,

void GPIO_Init(void)

 ,

{

 ,

RCC->,AHB1ENR|=RCC_AHB1ENR_GPIODEN,

GPIOD->,MODER|=(1<,<,28), // pin 14 is output

 ,

GPIOD->,OTYPER&,=~(1<,<,14),//pin 14 as push pull

 ,

GPIOD->,OSPEEDR|=(1<,<,29)|(1<,<,28),//LOW speed

 ,

GPIOD->,PUPDR&,=~(1<,<,29)|(1<,<,28),//No push pull

GPIOD->,MODER|=(1<,<,30), // pin 15 is output

 ,

GPIOD->,OTYPER&,=~(1<,<,15),//pin 15 as push pull

 ,

GPIOD->,OSPEEDR|=(1<,<,30)|(1<,<,31),//LOW speed

 ,

GPIOD->,PUPDR&,=~(1<,<,30)|(1<,<,31),//No push pull

 ,

}

void tim10_init(void)

 ,

{

 ,

RCC->,APB2ENR|=(1<,<,17),

 ,

TIM10->,CR1|=(1<,<,7),

 ,

TIM10->,DIER|=(1<,<,1),

 ,

TIM10->,SR|=(1<,<,1),

 ,

TIM10->,EGR|=(1<,<,1),

 ,

TIM10->,CCMR1|=(1<,<,3)|(0<,<,1)|(0<,<,0),

 ,

TIM10->,CCER|=(1<,<,0),

 ,

//TIM10->,CCR1=5,

 ,

TIM10->,PSC|=4200,

 ,

TIM10->,ARR|=1000,

 ,

NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn),

 ,

}

 ,

void TIM1_UP_TIM10_IRQHandler (void)

 ,

{

 ,

GPIOD->,ODR|=(1<,<,14),

}

[Yadav]

Posted on June 17, 2018 at 04:41

Hi.. Meanwhile i tried like this . Now both are working. Hope this way is correct ?

void TIM1_UP_TIM10_IRQHandler (void)

{

if(TIM10->SR & (1<<1))

{

GPIOD->ODR|=(1<<14);

}

TIM10->SR =0X00;

}

[Yadav]

Dear All,

NowI have been stuck with the sd card interface for last 3 weeks. I have used cubemx version 4.26 for creating this project. But F_mount function is not working.Please find the below code. I have tried everything based on youtube videos but nothing working out. kindly help me out to solve this issue.

#include "main.h"

#include "stm32f4xx_hal.h"

#include "fatfs.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

SD_HandleTypeDef hsd;

/* USER CODE BEGIN PV */

/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

sta

int main(void)

{

 HAL_Init();

 SystemClock_Config();

 MX_GPIO_Init();

 MX_SDIO_SD_Init();

 MX_FATFS_Init();

UINT testbyte;

HAL_Delay(10);

if(f_mount(&SDFatFS,SDPath,1)==FR_OK)

{

HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_12);

char mypath[]="WRITE1.TXT\0";

f_open(&SDFile,mypath,FA_WRITE|FA_CREATE_ALWAYS);

char *mydata="HELLO WORLD\0";

f_write(&SDFile,&mydata,sizeof(mydata),&testbyte);

f_close(&SDFile);

HAL_Delay(1000);

HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_13);

}

 while (1)

 {

 }

}

void SystemClock_Config(void)

{

 RCC_OscInitTypeDef RCC_OscInitStruct;

 RCC_ClkInitTypeDef RCC_ClkInitStruct;

 __HAL_RCC_PWR_CLK_ENABLE();

 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /**Initializes the CPU, AHB and APB busses clocks 

  */

 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

 RCC_OscInitStruct.HSIState = RCC_HSI_ON;

 RCC_OscInitStruct.HSICalibrationValue = 16;

 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;

 RCC_OscInitStruct.PLL.PLLM = 8;

 RCC_OscInitStruct.PLL.PLLN = 50;

 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;

 RCC_OscInitStruct.PLL.PLLQ = 7;

 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

 {

  _Error_Handler(__FILE__, __LINE__);

 }

  /**Initializes the CPU, AHB and APB busses clocks 

  */

 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;

 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV8;

 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV4;

 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)

 {

  _Error_Handler(__FILE__, __LINE__);

 }

  /**Configure the Systick interrupt time 

  */

 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

  /**Configure the Systick 

  */

 HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

 /* SysTick_IRQn interrupt configuration */

 HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);

}

/* SDIO init function */

static void MX_SDIO_SD_Init(void)

{

 hsd.Instance = SDIO;

 hsd.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;

 hsd.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;

 hsd.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;

 hsd.Init.BusWide = SDIO_BUS_WIDE_1B;

 hsd.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;

 hsd.Init.ClockDiv = 0;

}

/** Configure pins as 

    * Analog 

    * Input 

    * Output

    * EVENT_OUT

    * EXTI

*/

static void MX_GPIO_Init(void)

{

 GPIO_InitTypeDef GPIO_InitStruct;

 /* GPIO Ports Clock Enable */

 __HAL_RCC_GPIOD_CLK_ENABLE();

 __HAL_RCC_GPIOC_CLK_ENABLE();

 /*Configure GPIO pin Output Level */

 HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12|GPIO_PIN_13, GPIO_PIN_RESET);

 /*Configure GPIO pins : PD12 PD13 */

 GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_13;

 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

 GPIO_InitStruct.Pull = GPIO_NOPULL;

 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

 HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

}

void _Error_Handler(char *file, int line)

{

 /* USER CODE BEGIN Error_Handler_Debug */

 /* User can add his own implementation to report the HAL error return state */

 while(1)

 {

 }

 /* USER CODE END Error_Handler_Debug */

}

#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 CODE BEGIN 6 */

 /* User can add his own implementation to report the file name and line number,

   tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

 /* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */