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主机A的主程序代码。#include;#define uchar unsigned char。#define F_OSC 12000000UL。#define F_BAUD 1200UL。#define RELOAD (uchar)(256-F_OSC/12/32/F_BAUD)。#define B_ID 2。#define C_ID 3。#define LED_ON 4。#define LED_OFF (~LED_ON)。sbit P20 = P2^0。sbit LEDB = P1^0。sbit LEDC = P1^1。typedef union {。uchar buf[2]。struct {;uchar databuf。uchar TXID。
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