最精間的PT2262解碼程序

1、我看過很多PT2262軟件解碼程序，都是用定時(shí)器測(cè)量脈沖寬度。占用系統(tǒng)太多資源。我自己編寫的程序不 用定時(shí)器，不用中斷，代碼最少。發(fā)射端為PT2262 3.3M的電阻 接收端為M8內(nèi)部1M RC振蕩。解碼成 功后輸出D 口顯示。編譯軟件為ICCAYRo+5VC5: du100nGNDPC5GND蜂鳴器.+5VC5: du100nGNDPC5GND蜂鳴器. PBOo cGN匚+5V糜4-質(zhì)5財(cái)Hz E接收模塊QPC6(/RESET)AGNDAREFAVCCPC0(ADC0)PC1(ADC1)PC2(ADC2)PC3(ADC3)PC4(ADC4/SDA)PC5(ADC5/SCL)PB6(XTAL1

2、/TOSC1)PB7(XTAL2/TOSC2) PDO(RXD)PD1 fTXD) PD2(INT0) GNDPD3(INT1)PD4(XCK/TD) VCCPD5fT1)PD6(AIN0)PD7(AIN1)PBO(ICP)PB1(OC1A)PB2(SS/OC1B)PB3(MOSI/OC2)PB4(MISO)PB5(SCK)MEGA8-P#include #include void delay_ms(void)毫秒延時(shí)unsigned int i;for (i=0;i140;i+)void delay_nms(unsigned int n)/延時(shí)周期unsigned int i;for (i=

3、0;in;i+)delay_ms();響蜂鳴器void spaz(void)響蜂鳴器PORTC| = (15);delay_nms(50);PORTC&=(15);unsigned long decode(void)無線解碼unsigned longDATA;記錄數(shù)據(jù)unsigned charcount,i;/暫時(shí)計(jì)數(shù)/* 一共接收三字節(jié)*/DATA=0;/for (count=0;count24;count+)開始收集/*測(cè)量高電平寬度*/i=0;寬度計(jì)數(shù)while (PINC&(1192) goto end; 限時(shí)解碼/*分辨出電平高低*/DATA*=2;數(shù)據(jù)左移if (ii)&(i24) goto end; 電平合法DATA+=0;記低電平elseif (!(168i)&(i72) goto end; 電平合法DATA+=1;記高電平/*測(cè)量低電平寬度*/低位計(jì)數(shù)/低位計(jì)數(shù)/計(jì)數(shù)增加asm(nop);i+；if (i224) goto end;限時(shí)解碼/*低電平是否過窄*/if (i0)spaz();for (i=2;i=0;i一)Di=DATA;DATA=8;i=0;while (1)if (!(PINB&(10)delay_nms(20);if (!(PINB&(10)i+;spaz();while (!(PINB&(12) bre