diff options
| -rw-r--r-- | ports/stm32/systick.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ports/stm32/systick.c b/ports/stm32/systick.c index d70fc0053..7d1e318ac 100644 --- a/ports/stm32/systick.c +++ b/ports/stm32/systick.c @@ -96,12 +96,12 @@ void mp_hal_delay_ms(mp_uint_t Delay) { // IRQs enabled, so can use systick counter to do the delay uint32_t start = uwTick; // Wraparound of tick is taken care of by 2's complement arithmetic. - while (uwTick - start < Delay) { + do { // This macro will execute the necessary idle behaviour. It may // raise an exception, switch threads or enter sleep mode (waiting for // (at least) the SysTick interrupt). MICROPY_EVENT_POLL_HOOK - } + } while (uwTick - start < Delay); } else { // IRQs disabled, so need to use a busy loop for the delay. // To prevent possible overflow of the counter we use a double loop. |