#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ftdi.h>

extern struct ftdi_context ftdi;

read_command(rs)
{
	u_char cmd[8];

	/* set RS */
	cmd[0] = 0x82;
	cmd[1] = rs ? 0x03 : 0x02;
	cmd[2] = 0x03;
	/* read upper byte */
	cmd[3] = 0x90;
	cmd[4] = 0;	/* dummy addr */
	/* read lower byte */
	cmd[5] = 0x90;
	cmd[6] = 0;	/* dummy addr */
	/* send immediate */
	cmd[7] = 0x87;
	do_ftdi_write(cmd, 8);
}

cmd_ri()
{
	read_command(0);
	return(0);
}

cmd_rd()
{
	read_command(1);
	return(0);
}

cmd_fr(argc, argv)
	char **argv;
{
	unsigned reqlen = strtoul(argv[1], 0, 0);
	u_char rdbuf[256];
	int rc, i;

	if (reqlen < 1 || reqlen > sizeof rdbuf) {
		printf("error: bad read request length\n");
		return(-1);
	}
	rc = ftdi_read_data(&ftdi, rdbuf, reqlen);
	printf("FTDI read returned %d\n", rc);
	for (i = 0; i < rc; i++)
		printf("read byte: %02X\n", rdbuf[i]);
	return(0);
}