diff options
Diffstat (limited to 'src/wiring/time.h')
| -rw-r--r-- | src/wiring/time.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/wiring/time.h b/src/wiring/time.h index a97310a..68b3901 100644 --- a/src/wiring/time.h +++ b/src/wiring/time.h @@ -41,6 +41,20 @@ void delay(unsigned long ms); /* Delay for us microseconds */ void delayMicroseconds(uint32_t us); +#if 0 +static inline void delay_us(uint32 us) { + us *= 12; + asm volatile("mov r0, %[us] \n\t" + "subs r0, #2 \n\t" +"1: \n\t" + "subs r0, r0, #1 \n\t" + "bne 1b" + : + : [us] "r" (us) + : "r0", "cc"); + +} +#endif #ifdef __cplusplus } // extern "C" #endif |