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BackTicker++和IsrTicker++ 分别是何意?



PMSM3-4例程中,主程序最后一句和主中断程序第一句分别是

// IDLE loop. Just sit and loop forever:
for(;;) BackTicker++;

}

interrupt void MainISR(void)
{

// Verifying the ISR
IsrTicker++;

这两句话分别是什么含义? BackTicker和IsrTicker是什么含义?