Question
COMP connects to TIM
I am using a STM32H723ZGT6.
I am trying to Trigger an Input Capture on TIM1 Channel 1 by connecting to the output of the Comparator internally,but cannot get the TIM1 Configuration to fire the Input Capture Callback.
I've turned on the input capture interrupt function and comparator.
HAL_COMP_Start(&hcomp1);
__HAL_TIM_SET_PRESCALER(&htim1, 275-1);
HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_1);
HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_2);
The generated Config Code for the Comparator and the Timer are as follows.
/* COMP1 init function */
void MX_COMP1_Init(void)
{
/* USER CODE BEGIN COMP1_Init 0 */
/* USER CODE END COMP1_Init 0 */
/* USER CODE BEGIN COMP1_Init 1 */
/* USER CODE END COMP1_Init 1 */
hcomp1.Instance = COMP1;
hcomp1.Init.InvertingInput = COMP_INPUT_MINUS_1_2VREFINT;
hcomp1.Init.NonInvertingInput = COMP_INPUT_PLUS_IO2;
hcomp1.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
hcomp1.Init.Hysteresis = COMP_HYSTERESIS_NONE;
hcomp1.Init.BlankingSrce = COMP_BLANKINGSRC_NONE;
hcomp1.Init.Mode = COMP_POWERMODE_HIGHSPEED;
hcomp1.Init.WindowMode = COMP_WINDOWMODE_DISABLE;
hcomp1.Init.TriggerMode = COMP_TRIGGERMODE_IT_RISING;
if (HAL_COMP_Init(&hcomp1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN COMP1_Init 2 */
/* USER CODE END COMP1_Init 2 */
}
void HAL_COMP_MspInit(COMP_HandleTypeDef* compHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(compHandle->Instance==COMP1)
{
/* USER CODE BEGIN COMP1_MspInit 0 */
/* USER CODE END COMP1_MspInit 0 */
/* COMP1 clock enable */
__HAL_RCC_COMP12_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**COMP1 GPIO Configuration
PB2 ------> COMP1_INP
*/
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* COMP1 interrupt Init */
HAL_NVIC_SetPriority(COMP_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(COMP_IRQn);
/* USER CODE BEGIN COMP1_MspInit 1 */
/* USER CODE END COMP1_MspInit 1 */
}
}
void HAL_COMP_MspDeInit(COMP_HandleTypeDef* compHandle)
{
if(compHandle->Instance==COMP1)
{
/* USER CODE BEGIN COMP1_MspDeInit 0 */
/* USER CODE END COMP1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_COMP12_CLK_DISABLE();
/**COMP1 GPIO Configuration
PB2 ------> COMP1_INP
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_2);
/* COMP1 interrupt Deinit */
HAL_NVIC_DisableIRQ(COMP_IRQn);
/* USER CODE BEGIN COMP1_MspDeInit 1 */
/* USER CODE END COMP1_MspDeInit 1 */
}
}
/* TIM1 init function */
void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_IC_InitTypeDef sConfigIC = {0};
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 25-1;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 65535;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_IC_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
sConfigIC.ICFilter = 0;
if (HAL_TIM_IC_ConfigChannel(&htim1, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIMEx_TISelection(&htim1, TIM_TIM1_TI1_COMP1, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
sConfigIC.ICSelection = TIM_ICSELECTION_INDIRECTTI;
if (HAL_TIM_IC_ConfigChannel(&htim1, &sConfigIC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM1_Init 2 */
/* USER CODE END TIM1_Init 2 */
}