?? exio.c
字號(hào):
#include "..\startup\44b.h"#include "..\inc\ExIO.h"void init_ADdevice(){ rADCPSR=20; rADCCON=ADCCON_SLEEP;}int GetADresult(int channel){ rADCCON=(channel<<2)|ADCCON_ENABLE_START; Delay(10); while(!(rADCCON&ADCCON_FLAG)); return rADCDAT;}void ScanLED(char n[]){ int i,temp=0x01; for(i=0;i<8;i++){ EXIO_8255A_PORTB=0xff; EXIO_8255A_PORTA=n[i]; EXIO_8255A_PORTB=~temp; temp<<=1; Delay(10); }}void testExIO(){ int aa,i; char n[]={0x50,0xff,0x88,0x55,0x55,0x55,0x55,0x55}; init_ADdevice(); EXIO_8255A_CTRL=0x80; EXIO_8255B_CTRL=0x82; //port B for input EXIO_8255A_PORTA=0x55; EXIO_8255A_PORTB=0xfe; EXIO_8255A_PORTC=0x55; EXIO_8255B_PORTA=0x55; EXIO_8255B_PORTB=0x0; EXIO_8255B_PORTC=0x55; Delay(5000);/* aa=EXIO_8255B_CTRL; aa=EXIO_8255B_CTRL; aa=EXIO_8255B_CTRL; aa=EXIO_8255B_CTRL;*//* for(;;){ aa=0x01; for(i=0;i<8;i++){ EXIO_8255A_PORTC=aa; aa<<=1; ScanLED(n); ScanLED(n); ScanLED(n); ScanLED(n); } }*/ for(;;){ for(i=0;i<10;i++){ aa=EXIO_8255B_PORTB; EXIO_8255A_PORTC=aa; ScanLED(n); } Uart_Printf("AD0=%d\tAD1=%d\tAD2=%d\tAD3=%d\n",GetADresult(0),GetADresult(1), GetADresult(2),GetADresult(3));// Uart_Printf("AD0=%d\n",GetADresult(0));// Delay(1000); } aa=EXIO_8255A_CTRL; aa=EXIO_8255B_CTRL;}?? 快捷鍵說(shuō)明
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