uart2_rs485.h

USART构成RS485程序

/*****************************************************************************/
/*+++++++++++++++++++++++++++++ DsPIC30F6010A +++++++++++++++++++++++++++++++*/
/*++++++++++++++++++++++++++++ UART2---》rs485 ++++++++++++++++++++++++++++++*/
/*++++++++++++++++++++++++++++++++ 头文件 +++++++++++++++++++++++++++++++++++*/
/*****************************************************************************/

#define MyAddress 0x01

/*RS485输入输出切换控制引脚*/
#define RD	LATDbits.LATD1            //1；input； 

/*485通讯变量定义*/
extern unsigned char functionF,RXnum; 	//功能标志字，接收存储位置
extern unsigned int receive[8];        //接收缓冲数组 
extern unsigned int monitor_data[10];  //监视发送数组
extern unsigned int set_data[3];		//设置发送数组

/*功能函数*/
extern void INIT_UART2_485(void); 
extern void communicate485(void);
extern void SendMonitor485(void);