?? serial.c
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#include "s3c2410.h"#include "serial.h"#define TXD0READY (1<<2)#define RXD0READY (1)void init_uart(void){//初始化UART GPHCON |= 0xa0; //GPH2,GPH3 used as TXD0,RXD0 GPHUP = 0x0c; //GPH2,GPH3內部上拉 ULCON0 = 0x03; //8N1 UCON0 = 0x05; //查詢方式 UFCON0 = 0x00; //不使用FIFO UMCON0 = 0x00; //不使用流控 UBRDIV0 = 12; //波特率為57600}void putc(unsigned char c){ while( ! (UTRSTAT0 & TXD0READY) ); UTXH0 = c;}unsigned char getc(void){#ifdef SERIAL_ECHO unsigned char ret;#endif while( ! (UTRSTAT0 & RXD0READY) ); ret = URXH0;#ifdef SERIAL_ECHO if (ret == 0x0d || ret == 0x0a) { putc(0x0d); putc(0x0a); } else { putc(ret); }#endif return ret;}?? 快捷鍵說明
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