diff options
| -rw-r--r-- | ports/nrf/mphalport.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/ports/nrf/mphalport.c b/ports/nrf/mphalport.c index bdedea9d01..4469adc80d 100644 --- a/ports/nrf/mphalport.c +++ b/ports/nrf/mphalport.c @@ -99,11 +99,12 @@ void mp_hal_delay_us(mp_uint_t us) { } register uint32_t delay __ASM("r0") = us; __ASM volatile ( - #ifdef NRF51 - ".syntax unified\n" - #endif "1:\n" + #ifdef NRF51 + " SUB %0, %0, #1\n" + #else " SUBS %0, %0, #1\n" + #endif " NOP\n" " NOP\n" " NOP\n" |