Hi, I am working with STM32Cube_FW_F7_V1.11.0 on a Nucleo_F746ZG.
Seems like what I wanna do should be simple, but I'm not getting it...
I need to measure the frequency of something, so I started with Projects/STM32F746ZG-Nucleo/Examples/TIM/TIM_InputCapture. This uses TIM3 on GPIOB-Pin5 as the input capture pin.
To test, I just wanted to see the interrupt handler get hit if I pulsed that pin, but I noticed that as soon
as I momentarily ground that pin the board hangs. Looking at the HAL_TIM_IC_MspInit() function that
comes with the example...
void HAL_TIM_IC_MspInit(TIM_HandleTypeDef *htim)
GPIO_InitStruct.Pin = TIMx_GPIO_PIN_CHANNEL2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = TIMx_GPIO_AF_TIMx;
HAL_NVIC_SetPriority(TIMx_IRQn, 0, 1);
This is straight out of Cube (with comments removed).
It seems odd that an input pin would be configured as push-pull (GPIO_MODE_AF_PP)...
Does anyone know if this is tested code? If it is, any suggestions as to why
it hangs for me?