[libftdi] / examples / eeprom.c

/* LIBFTDI EEPROM access example

   This program is distributed under the GPL, version 2
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <getopt.h>
#include <ftdi.h>

int main(int argc, char **argv)
{
    struct ftdi_context *ftdi;
    unsigned char buf[256];
    int f, i, j;
    int vid = 0x0403;
    int pid = 0x6010;
    char const *desc    = 0;
    char const *serial  = 0;
    int erase = 0;
    int use_defaults = 0;
    int large_chip = 0;
    int do_write = 0;
    int size;
    int value;
    int retval = 0;

    if ((ftdi = ftdi_new()) == 0)
    {
        fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
                ftdi_get_error_string(ftdi));
        return EXIT_FAILURE;
    }

    while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1)
    {
        switch (i)
        {
            case 'd':
                use_defaults = 1;
                if (optarg)
                    large_chip = 0x66;
                break;
            case 'e':
                erase = 1;
                break;
            case 'v':
                vid = strtoul(optarg, NULL, 0);
                break;
            case 'p':
                pid = strtoul(optarg, NULL, 0);
                break;
            case 'P':
                desc = optarg;
                break;
            case 'S':
                serial = optarg;
                break;
            case 'w':
                do_write  = 1;
                break;
            default:
                fprintf(stderr, "usage: %s [options]\n", *argv);
                fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
                        "EEPROM or for 256 Byte EEPROM if some [num] is given\n");
                fprintf(stderr, "\t-w write\n");
                fprintf(stderr, "\t-e erase\n");
                fprintf(stderr, "\t-v verbose decoding\n");
                fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
                fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
                fprintf(stderr, "\t-P <string? Search for device with given "
                        "product description\n");
                fprintf(stderr, "\t-S <string? Search for device with given "
                        "serial number\n");
                retval = -1;
                goto done;
        }
    }

    // Select first interface
    ftdi_set_interface(ftdi, INTERFACE_ANY);

    // Open device
    f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
    if (f < 0)
    {
        fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
        if (desc)
            fprintf(stderr, " Desc %s", desc);
        if (serial)
            fprintf(stderr, " Serial %s", serial);
        fprintf(stderr, "\n");
        fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
                f, ftdi_get_error_string(ftdi));

        retval = -1;
        goto done;
    }

    if (erase)
    {
        f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */
        if (f < 0)
        {
            fprintf(stderr, "Erase failed: %s",
                    ftdi_get_error_string(ftdi));
            retval =  -2;
            goto done;
        }
        if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
        {
            fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
        }
        if (value == -1)
            fprintf(stderr, "No EEPROM\n");
        else if (value == 0)
            fprintf(stderr, "Internal EEPROM\n");
        else
            fprintf(stderr, "Found 93x%02x\n", value);
        retval = 0;
        goto done;
    }

    if (use_defaults)
    {
        ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL);
        if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
        {
            fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
        }
        if (large_chip)
            if (ftdi_set_eeprom_value(ftdi, CHIP_TYPE, 0x66) <0)
            {
                fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
                        f, ftdi_get_error_string(ftdi));
            }
        f=(ftdi_eeprom_build(ftdi));
        if (f < 0)
        {
            fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
            retval = -1;
            goto done;
        }
    }
    else if (do_write)
    {
        ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL);
        f = ftdi_erase_eeprom(ftdi);
        if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
        {
            fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
        }
        f = ftdi_erase_eeprom(ftdi);/* needed to determine EEPROM chip type */
        if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
        {
            fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
        }
        if (value == -1)
            fprintf(stderr, "No EEPROM\n");
        else if (value == 0)
            fprintf(stderr, "Internal EEPROM\n");
        else
            fprintf(stderr, "Found 93x%02x\n", value);
        f=(ftdi_eeprom_build(ftdi));
        if (f < 0)
        {
            fprintf(stderr, "Erase failed: %s",
                    ftdi_get_error_string(ftdi));
            retval = -2;
            goto done;
        }
        f = ftdi_write_eeprom(ftdi);
        {
            fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
                    f, ftdi_get_error_string(ftdi));
            retval = 1;
            goto done;
        }
    }
    f = ftdi_read_eeprom(ftdi);
    if (f < 0)
    {
        fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
                f, ftdi_get_error_string(ftdi));
        retval = -1;
        goto done;
    }


    ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value);
    if (value <0)
    {
        fprintf(stderr, "No EEPROM found\n");
        retval = -1;
        goto done;

    }
    fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value);
    if (ftdi->type == TYPE_R)
        size = 0xa0;
    else
        size = value;
    ftdi_get_eeprom_buf(ftdi, buf, size);
    for (i=0; i < size; i += 16)
    {
        fprintf(stdout,"0x%03x:", i);

        for (j = 0; j< 8; j++)
            fprintf(stdout," %02x", buf[i+j]);
        fprintf(stdout," ");
        for (; j< 16; j++)
            fprintf(stdout," %02x", buf[i+j]);
        fprintf(stdout," ");
        for (j = 0; j< 8; j++)
            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
        fprintf(stdout," ");
        for (; j< 16; j++)
            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
        fprintf(stdout,"\n");
    }

    f = ftdi_eeprom_decode(ftdi, 1);
    if (f < 0)
    {
        fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
                f, ftdi_get_error_string(ftdi));
        retval = -1;
    }

done:
    ftdi_usb_close(ftdi);
    ftdi_free(ftdi);
    return retval;
}
Commit	Line	Data
	1	/* LIBFTDI EEPROM access example
	2
	3	This program is distributed under the GPL, version 2
	4	*/
	5
	6	#include <stdio.h>
	7	#include <stdlib.h>
	8	#include <string.h>
	9	#include <ctype.h>
	10	#include <unistd.h>
	11	#include <getopt.h>
	12	#include <ftdi.h>
	13
	14	int main(int argc, char **argv)
	15	{
	16	struct ftdi_context *ftdi;
	17	unsigned char buf[256];
	18	int f, i, j;
	19	int vid = 0x0403;
	20	int pid = 0x6010;
	21	char const *desc = 0;
	22	char const *serial = 0;
	23	int erase = 0;
	24	int use_defaults = 0;
	25	int large_chip = 0;
	26	int do_write = 0;
	27	int size;
	28	int value;
	29	int retval = 0;
	30
	31	if ((ftdi = ftdi_new()) == 0)
	32	{
	33	fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
	34	ftdi_get_error_string(ftdi));
	35	return EXIT_FAILURE;
	36	}
	37
	38	while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1)
	39	{
	40	switch (i)
	41	{
	42	case 'd':
	43	use_defaults = 1;
	44	if (optarg)
	45	large_chip = 0x66;
	46	break;
	47	case 'e':
	48	erase = 1;
	49	break;
	50	case 'v':
	51	vid = strtoul(optarg, NULL, 0);
	52	break;
	53	case 'p':
	54	pid = strtoul(optarg, NULL, 0);
	55	break;
	56	case 'P':
	57	desc = optarg;
	58	break;
	59	case 'S':
	60	serial = optarg;
	61	break;
	62	case 'w':
	63	do_write = 1;
	64	break;
	65	default:
	66	fprintf(stderr, "usage: %s [options]\n", *argv);
	67	fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
	68	"EEPROM or for 256 Byte EEPROM if some [num] is given\n");
	69	fprintf(stderr, "\t-w write\n");
	70	fprintf(stderr, "\t-e erase\n");
	71	fprintf(stderr, "\t-v verbose decoding\n");
	72	fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
	73	fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
	74	fprintf(stderr, "\t-P <string? Search for device with given "
	75	"product description\n");
	76	fprintf(stderr, "\t-S <string? Search for device with given "
	77	"serial number\n");
	78	retval = -1;
	79	goto done;
	80	}
	81	}
	82
	83	// Select first interface
	84	ftdi_set_interface(ftdi, INTERFACE_ANY);
	85
	86	// Open device
	87	f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
	88	if (f < 0)
	89	{
	90	fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
	91	if (desc)
	92	fprintf(stderr, " Desc %s", desc);
	93	if (serial)
	94	fprintf(stderr, " Serial %s", serial);
	95	fprintf(stderr, "\n");
	96	fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
	97	f, ftdi_get_error_string(ftdi));
	98
	99	retval = -1;
	100	goto done;
	101	}
	102
	103	if (erase)
	104	{
	105	f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */
	106	if (f < 0)
	107	{
	108	fprintf(stderr, "Erase failed: %s",
	109	ftdi_get_error_string(ftdi));
	110	retval = -2;
	111	goto done;
	112	}
	113	if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
	114	{
	115	fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
	116	f, ftdi_get_error_string(ftdi));
	117	}
	118	if (value == -1)
	119	fprintf(stderr, "No EEPROM\n");
	120	else if (value == 0)
	121	fprintf(stderr, "Internal EEPROM\n");
	122	else
	123	fprintf(stderr, "Found 93x%02x\n", value);
	124	retval = 0;
	125	goto done;
	126	}
	127
	128	if (use_defaults)
	129	{
	130	ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL);
	131	if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
	132	{
	133	fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
	134	f, ftdi_get_error_string(ftdi));
	135	}
	136	if (large_chip)
	137	if (ftdi_set_eeprom_value(ftdi, CHIP_TYPE, 0x66) <0)
	138	{
	139	fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
	140	f, ftdi_get_error_string(ftdi));
	141	}
	142	f=(ftdi_eeprom_build(ftdi));
	143	if (f < 0)
	144	{
	145	fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
	146	f, ftdi_get_error_string(ftdi));
	147	retval = -1;
	148	goto done;
	149	}
	150	}
	151	else if (do_write)
	152	{
	153	ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL);
	154	f = ftdi_erase_eeprom(ftdi);
	155	if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
	156	{
	157	fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
	158	f, ftdi_get_error_string(ftdi));
	159	}
	160	f = ftdi_erase_eeprom(ftdi);/* needed to determine EEPROM chip type */
	161	if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
	162	{
	163	fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
	164	f, ftdi_get_error_string(ftdi));
	165	}
	166	if (value == -1)
	167	fprintf(stderr, "No EEPROM\n");
	168	else if (value == 0)
	169	fprintf(stderr, "Internal EEPROM\n");
	170	else
	171	fprintf(stderr, "Found 93x%02x\n", value);
	172	f=(ftdi_eeprom_build(ftdi));
	173	if (f < 0)
	174	{
	175	fprintf(stderr, "Erase failed: %s",
	176	ftdi_get_error_string(ftdi));
	177	retval = -2;
	178	goto done;
	179	}
	180	f = ftdi_write_eeprom(ftdi);
	181	{
	182	fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
	183	f, ftdi_get_error_string(ftdi));
	184	retval = 1;
	185	goto done;
	186	}
	187	}
	188	f = ftdi_read_eeprom(ftdi);
	189	if (f < 0)
	190	{
	191	fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
	192	f, ftdi_get_error_string(ftdi));
	193	retval = -1;
	194	goto done;
	195	}
	196
	197
	198	ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value);
	199	if (value <0)
	200	{
	201	fprintf(stderr, "No EEPROM found\n");
	202	retval = -1;
	203	goto done;
	204
	205	}
	206	fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value);
	207	if (ftdi->type == TYPE_R)
	208	size = 0xa0;
	209	else
	210	size = value;
	211	ftdi_get_eeprom_buf(ftdi, buf, size);
	212	for (i=0; i < size; i += 16)
	213	{
	214	fprintf(stdout,"0x%03x:", i);
	215
	216	for (j = 0; j< 8; j++)
	217	fprintf(stdout," %02x", buf[i+j]);
	218	fprintf(stdout," ");
	219	for (; j< 16; j++)
	220	fprintf(stdout," %02x", buf[i+j]);
	221	fprintf(stdout," ");
	222	for (j = 0; j< 8; j++)
	223	fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
	224	fprintf(stdout," ");
	225	for (; j< 16; j++)
	226	fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
	227	fprintf(stdout,"\n");
	228	}
	229
	230	f = ftdi_eeprom_decode(ftdi, 1);
	231	if (f < 0)
	232	{
	233	fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
	234	f, ftdi_get_error_string(ftdi));
	235	retval = -1;
	236	}
	237
	238	done:
	239	ftdi_usb_close(ftdi);
	240	ftdi_free(ftdi);
	241	return retval;
	242	}