TIM1 update interrupt not firing.

[mlickess]

Posted on September 11, 2015 at 13:11

Hello Everybody.

I am having trouble with the output compare function of an STM32F401RE. I am testing the OC function to generate a waveform by toggling an output at the compare point and the overflow point.The counter is running and comparing correctly, but I cannot get the interrupt to fire for the update event when the counter overflows.I have a break point in the interrupt routines, but the update event (for overflow) never occours.The flag is being set in TIM1_SR bit 0 (UIF: Update interrupt flag), but the interrupt is not called.My code (generated through STM32CubeMX - this is the first time I have used this program, so may be missing something with the new abstration layer!) is below.I hope someone can help, than kyou in advance!int main(void){  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */  HAL_Init(); /* interrupt enables */  /* Configure the system clock */  SystemClock_Config();  /* Initialize all configured peripherals */  MX_GPIO_Init();  MX_TIM1_Init();   /* Infinite loop */  /* USER CODE BEGIN WHILE */  while (1){}}/*** @brief This function handles TIM1 update interrupt and TIM10 global interrupt. - timer overflow*/void TIM1_UP_TIM10_IRQHandler(void){  HAL_TIM_IRQHandler(&htim1); /* clears flags etc... */}/*** @brief This function handles TIM1 capture compare interrupt.*/void TIM1_CC_IRQHandler(void){  HAL_TIM_IRQHandler(&htim1); /* clears flags etc... */}/** System Clock Configuration*/void SystemClock_Config(void){  RCC_OscInitTypeDef RCC_OscInitStruct;  RCC_ClkInitTypeDef RCC_ClkInitStruct;  __PWR_CLK_ENABLE();  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);  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 = 16;  RCC_OscInitStruct.PLL.PLLN = 336;  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;  RCC_OscInitStruct.PLL.PLLQ = 7;  HAL_RCC_OscConfig(&RCC_OscInitStruct);  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1;  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);}/* TIM1 init function */void MX_TIM1_Init(void){  TIM_MasterConfigTypeDef sMasterConfig;  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;  TIM_OC_InitTypeDef sConfigOC; __TIM1_CLK_ENABLE(); TIM1->DIER = 0x0002; /* initialise basic timer operation */  htim1.Instance = TIM1;  htim1.Init.Prescaler = 0;  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;  htim1.Init.Period = 0x0fff;  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;  htim1.Init.RepetitionCounter = 0;  HAL_TIM_OC_Init(&htim1);   sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;  HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;  sBreakDeadTimeConfig.DeadTime = 0;  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;  HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig); /* configure the timer to run with output compare */  sConfigOC.OCMode = TIM_OCMODE_TIMING; //sConfigOC.OCMode = TIM_OCMODE_INACTIVE;  sConfigOC.Pulse = 0x00ff;  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;  HAL_TIM_OC_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1); /* start the output compare module */ HAL_TIM_Base_Start(&htim1); HAL_TIM_OC_Start(&htim1, TIM_CHANNEL_1); }void HAL_MspInit(void){  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);  /* System interrupt init*/  /* SysTick_IRQn interrupt configuration */  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);}void HAL_TIM_OC_MspInit(TIM_HandleTypeDef* htim_oc){  if(htim_oc->Instance==TIM1)  {    /* Peripheral clock enable */    //__TIM1_CLK_ENABLE();                                  DOES NOT WORK HERE! moved to MX_TIM1_Init()     /* Peripheral interrupt init*/    HAL_NVIC_SetPriority(TIM1_UP_TIM10_IRQn, 0, 0);    HAL_NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn);    HAL_NVIC_SetPriority(TIM1_CC_IRQn, 1, 0);    HAL_NVIC_EnableIRQ(TIM1_CC_IRQn);  }}

[mlickess]

Posted on September 14, 2015 at 13:24

Solved.

The cube was initialising, but not enabling the interrupts.I manually added 

TIM1->DIER = 0x0003;