test2.c

讲解了串口通讯的几个实例

#include "COM.H"
#define PackLength 58
unsigned char time[]="112233";
union unionSend
{

	unsigned  char Sendstring[PackLength];
	struct structSend
	{
	unsigned short int head;// 帧头0xff         2
	float Lat;// 纬度                           4
	float Lgt;//                                4
	float Hlg;// 高度                           4
	float Yaw;//                                4
	float Pitch;//                              4
	float Roll;//                               4
	float wx;//x角速度                          4
	float wy;//                                 4
	float wz;//                                 4
	float wax;// x角加速度                      4
	float way;//                                4
	float waz;//                                4
	unsigned char  GPStime[6];// 时间hhmmss //  6
	unsigned int CheckValue;// 两字节校验 //    2

	}s1;
}Sendunion;


void GiveValue(void)
{

Sendunion.s1.head=0xffff;
Sendunion.s1.Lat=33.0;
Sendunion.s1.Lgt=108.0;
Sendunion.s1.Hlg=393.0;
Sendunion.s1.Yaw=150.0;
Sendunion.s1.Pitch=0.1;
Sendunion.s1.Roll=2;
Sendunion.s1.wx=1.5;
Sendunion.s1.wy=1.5;
Sendunion.s1.wz=1.5;
Sendunion.s1.wax=1.5;
Sendunion.s1.way=1.5;
Sendunion.s1.waz=1.5;
memcpy(Sendunion.s1.GPStime,time, 6*sizeof(char));
Sendunion.s1.CheckValue=CRC16(Sendunion.Sendstring,PackLength-2);
}


void main(void)
{
	unsigned char key=0;
	clrscr();
	GiveValue();
	gotoxy(70,25); printf("Quit !");
	outportb(0x20,0x20);   //clear interrupt ask
	OpenCOM(COM2, BAUD_115200, PARITY_NO|STOP_BIT1|DATA_BIT8, INT_MSK_TX|INT_MSK_RX);


	while (key!='Q'&&key!='q')
	{
	 if (kbhit())
			key=getch();
	 if(!com2TXBusy)
			{
		   //	delay(1) ;
			StartSend(COM2, Sendunion.Sendstring,58);
            gotoxy(10,14);
			printf("TXnum:%d",com2TX);
		   //	delay(1);
		   //	delay(1);
			}
	}

CloseCOM(COM2);

}