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

char *device_serial;
struct ftdi_context ftdi;

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

	while ((c = getopt(argc, argv, "d:")) != EOF) {
		switch (c) {
		case 'd':
			device_serial = optarg;
			continue;
		default:
			/* error msg already printed */
			exit(1);
		}
	}
	switch (argc - optind) {
	case 0:
		break;
	case 1:
		if (chdir(argv[optind]) < 0) {
			perror(argv[optind]);
			exit(1);
		}
		break;
	default:
		fprintf(stderr, "usage: %s [options] [chdir]\n", argv[0]);
		exit(1);
	}
}

main(argc, argv)
	char **argv;
{
	char command[512];

	process_cmdline(argc, argv);
	ftdi_init(&ftdi);
	if (ftdi_usb_open_desc(&ftdi, 0x0403, 0x7157, 0, device_serial) < 0) {
		fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str);
		exit(1);
	}
	if (ftdi_set_bitmode(&ftdi, 0, BITMODE_MCU) < 0) {
		fprintf(stderr, "unable to enter MCU mode: %s\n",
			ftdi.error_str);
		exit(1);
	}
	for (;;) {
		if (isatty(0)) {
			fputs("lcdtest> ", stdout);
			fflush(stdout);
		}
		if (!fgets(command, sizeof command, stdin))
			exit(0);
		dispatch_cmd(command);
	}
}