RFID知识点总结

一.单音 #include sbit beep=P1^0; #define soundT 65058 void t0init() { TMOD=0x01; TH0=soundT/256; TL0=soundT%256; EA=1; ET0=1; TR0=1; } void t0serv() interrupt 1 { TH0=soundT/256; TL0=soundT%256; beep=~beep; } void main() { t0init(); while(1); }