7 // Convenience Macros, for delay compatibility with AVR-GCC
8 #define _delay_ms(val) delay( val )
9 #define _delay_us(val) delayMicroseconds( val )
12 // the systick interrupt is supposed to increment this at 1 kHz rate
13 extern volatile uint32_t systick_millis_count;
15 static inline uint32_t millis(void) __attribute__((always_inline, unused));
16 static inline uint32_t millis(void)
18 return systick_millis_count; // single aligned 32 bit is atomic;
22 static inline void delayMicroseconds(uint32_t) __attribute__((always_inline, unused));
23 static inline void delayMicroseconds(uint32_t usec)
26 uint32_t n = usec << 5;
27 #elif F_CPU == 48000000
28 uint32_t n = usec << 4;
29 #elif F_CPU == 24000000
30 uint32_t n = usec << 3;
33 "L_%=_delayMicroseconds:" "\n\t"
35 "bne L_%=_delayMicroseconds" "\n"
41 void yield(void) __attribute__ ((weak));
43 uint32_t micros(void);
45 void delay(uint32_t ms);