isrs.c

本人在DSP BF533上开发的控制GPS的程序

#include "system.h"


EX_INTERRUPT_HANDLER(UART_ISR)
{
	WORD data;

	// confirm interrupt handling
	if (*pUART_LSR & 0x0001)
	{
		data = *pUART_RBR;
		if (data == 0x0D)
		{
			*pUART_THR = 0x0A;
			asm("ssync;");
			while ((*pUART_LSR & 0x0020) == 0);
		}
		*pUART_THR = data;
		asm("ssync;");
		while ((*pUART_LSR & 0x0020) == 0);
	}
}