/*
 * This program connects to an FTDI chip via libusb and reads out its EEPROM.
 * The present version has been converted to use our local libraries
 * (libftmini and libuwrap) instead of libftdi - thus the external dependency
 * is only libusb.
 */

#include <sys/types.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <usb.h>
#include "../libuwrap/find_dev.h"
#include "../libuwrap/open_close.h"
#include "../libftmini/eeprom_func.h"

char *device_selector;
unsigned eeprom_size = 64;

process_cmdline(argc, argv)
	char **argv;
{
	int c;
	extern int optind;

	while ((c = getopt(argc, argv, "bB")) != EOF) {
		switch (c) {
		case 'b':
			eeprom_size = 128;
			continue;
		case 'B':
			eeprom_size = 256;
			continue;
		default:
			/* error msg already printed */
			exit(1);
		}
	}
	if (argc != optind + 1) {
		fprintf(stderr, "usage: %s [options] device-selector\n",
			argv[0]);
		exit(1);
	}
	device_selector = argv[optind];
}

main(argc, argv)
	char **argv;
{
	struct usb_device *dev;
	usb_dev_handle *usbh;
	u_short word;
	unsigned n, col;

	process_cmdline(argc, argv);
	dev = find_usbdev_by_desc_string(device_selector);
	if (!dev) {
		fprintf(stderr, "error: specified USB device not found\n");
		exit(1);
	}
	usbh = usbwrap_open_dev(dev, 1);
	for (n = 0; n < eeprom_size; n++) {
		word = ftmini_read_eeprom_loc(usbh, n);
		col = n & 7;
		if (col == 0)
			printf("%02X:", n * 2);
		printf(" %04X", word);
		if (col == 7)
			putchar('\n');
	}
	usbwrap_close_dev(usbh);
	exit(0);
}