single_transmit().c

是关于pdiusbd12完整固件程序代码

   
#include<stdio.h>


unsigned char main(unsigned char endp, unsigned char len, unsigned char * buf)
	{	int len=18;
		unsigned char i;
        endp=getchar();
		printf("enter the value of endp ");
	    int 	bEPPflags.bits.in_isr=1;
		
		outportb(D12_COMMAND, endp);
		i = inportb(D12_DATA);

		outportb(D12_COMMAND, 0xF0);
		outportb(D12_DATA, 0);
		outportb(D12_DATA, len);

		for(i=0; i<len; i++)
			outportb(D12_DATA, *(buf+i));

		outportb(D12_COMMAND, 0xFA);//使缓冲区在效

		if(bEPPflags.bits.in_isr == 0)
			ENABLE;

		return len;
	}