serial.h

x5045三线制总线读写程序,通过keil C验证OK!

#include <reg51.h>
  //波特率定义
#define OSC_FREQ         11059200L//晶振
#define BAUD_115200             256 - (OSC_FREQ/192L)/115200L   // 255
#define BAUD_57600              256 - (OSC_FREQ/192L)/57600L    // 254
#define BAUD_38400              256 - (OSC_FREQ/192L)/38400L    // 253
#define BAUD_28800              256 - (OSC_FREQ/192L)/28800L    // 252
#define BAUD_19200              256 - (OSC_FREQ/192L)/19200L    // 250
#define BAUD_14400              256 - (OSC_FREQ/192L)/14400L    // 248
#define BAUD_9600               256 - (OSC_FREQ/192L)/9600L     // 244
#define CALL_isr_UART()         TI = 1

void init_serial(void);
void PutChar(char c);
unsigned char GetChar(void);