/**
* @brief This function handles SysTick Handler.
* @param None
* @retval None
*/
void SysTick_Handler(void) {
// Instead of calling HAL_IncTick we do the increment here of the counter.
// This is purely for efficiency, since SysTick is called 1000 times per
// second at the highest interrupt priority.
// Note: we don't need uwTick to be declared volatile here because this is
// the only place where it can be modified, and the code is more efficient
// without the volatile specifier.
extern uint32_t uwTick;
uwTick += 1;
// Read the systick control regster. This has the side effect of clearing
// the COUNTFLAG bit, which makes the logic in sys_tick_get_microseconds
// work properly.
SysTick->CTRL;
// Right now we have the storage and DMA controllers to process during
// this interrupt and we use custom dispatch handlers. If this needs to
// be generalised in the future then a dispatch table can be used as
// follows: ((void(*)(void))(systick_dispatch[uwTick & 0xf]))();
if (STORAGE_IDLE_TICK(uwTick)) {
NVIC->STIR = FLASH_IRQn;
}
if (DMA_IDLE_ENABLED() && DMA_IDLE_TICK(uwTick)) {
dma_idle_handler(uwTick);
}
}
void SysTick_Handler(void) {
// Instead of calling HAL_IncTick we do the increment here of the counter.
// This is purely for efficiency, since SysTick is called 1000 times per
// second at the highest interrupt priority.
// Note: we don't need uwTick to be declared volatile here because this is
// the only place where it can be modified, and the code is more efficient
// without the volatile specifier.
extern uint32_t uwTick;
uwTick += 1;
SDMMC_Tick_Handler();
// Read the systick control regster. This has the side effect of clearing
// the COUNTFLAG bit, which makes the logic in mp_hal_ticks_us
// work properly.
SysTick->CTRL;
// Right now we have the storage and DMA controllers to process during
// this interrupt and we use custom dispatch handlers. If this needs to
// be generalised in the future then a dispatch table can be used as
// follows: ((void(*)(void))(systick_dispatch[uwTick & 0xf]))();
if (STORAGE_IDLE_TICK(uwTick)) {
TRIGGER_FLASH_IRQ(); // borrow UTICK IRQ to handle flash cache flush
}
/* rocky ignore
if (DMA_IDLE_ENABLED() && DMA_IDLE_TICK(uwTick)) {
dma_idle_handler(uwTick);
}
*/
#if MICROPY_PY_THREAD
if (pyb_thread_enabled) {
if (pyb_thread_cur->timeslice == 0) {
if (pyb_thread_cur->run_next != pyb_thread_cur) {
SCB->ICSR = SCB_ICSR_PENDSVSET_Msk;
}
} else {
--pyb_thread_cur->timeslice;
}
}
#endif
}
