FDCAN bus interrupts are not handled for the STM32G0B1 causing an infinite loop
rondlh opened this issue · comments
With my limited understanding I see the following:
The FDCAN implementation on the STM32G0B1 uses interrupt "TIM16_FDCAN_IT0_IRQn", which calls "TIM16_IRQHandler(void)" (in HardwareTimer.cpp).
In "timer.h" it says: #define TIM16_IRQHandler TIM16_FDCAN_IT0_IRQHandler.
"TIM16_IRQHandler" should analyze the interrupt source and forward to "HAL_FDCAN_IRQHandler" if the FDCAN bus is the interrupt source so the FDCAN callbacks can be used/called.
Currently TIM16_IRQHandler only processes interrupts triggered by Tim16, so the FDCAN bus callbacks cannot be used, and even worse, the interrupt flag is not cleared causing an infinite loop.
"TIM16_IRQHandler" in HardwareTimer.cpp
void TIM16_IRQHandler(void)
{
if (HardwareTimer_Handle[TIMER16_INDEX]) {
HAL_TIM_IRQHandler(&HardwareTimer_Handle[TIMER16_INDEX]->handle);
}
}
Hi @rondlh
right, as we have no official support for FDCAN it is not added.
Do not hesitate to provide a PR to implement this.