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opps - left in compared code

teensy4-core
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共有 1 個文件被更改,包括 0 次插入10 次删除
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      teensy4/delay.c

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teensy4/delay.c 查看文件

usec = 1000*smc + (ccdelta/(F_CPU_ACTUAL/1000000)); usec = 1000*smc + (ccdelta/(F_CPU_ACTUAL/1000000));
return usec; return usec;
} }
uint32_t micros(void)
{
uint32_t ccdelta, usec, smc;
do {
smc = systick_millis_count;
ccdelta = ARM_DWT_CYCCNT - systick_cycle_count;
} while ( smc != systick_millis_count ); // repeat if systick_isr
usec = 1000*smc + (ccdelta/(F_CPU_ACTUAL/1000000));
return usec;
}


#if 0 // kept to compare test to cycle count micro() #if 0 // kept to compare test to cycle count micro()
extern uint32_t otmicros(void); extern uint32_t otmicros(void);

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