int main(int argc, char** argv)
{
struct eeprom e;
int op;
op = 0;
usage_if(argc != 2 || argv[1][0] != '-' || argv[1][2] != '\0');
op = argv[1][1];
fprintf(stderr, "Open /dev/i2c/0 with 8bit mode\n");
die_if(eeprom_open("/dev/i2c/0", 0x50, EEPROM_TYPE_8BIT_ADDR, &e) < 0,
"unable to open eeprom device file "
"(check that the file exists and that it's readable)");
switch(op)
{
case 'r':
fprintf(stderr, " Reading 256 bytes from 0x0\n");
read_from_eeprom(&e, 0, 256);
break;
case 'w':
fprintf(stderr, " Writing 0x00-0xff into 24C08 \n");
write_to_eeprom(&e, 0);
break;
default:
usage_if(1);
exit(1);
}
eeprom_close(&e);
return 0;
}
int main(int argc, char** argv)
{
struct eeprom e;
int ret, op, i2c_addr, memaddr, size, want_hex, dummy, force, sixteen;
char *device, *arg = 0, *i2c_addr_s;
struct stat st;
int eeprom_type = 0;
op = want_hex = dummy = force = sixteen = 0;
g_quiet = 0;
while((ret = getopt(argc, argv, "1:8fr:qhw:xd")) != -1)
{
switch(ret)
{
case '1':
usage_if(*optarg != '6' || strlen(optarg) != 1);
die_if(eeprom_type, "EEPROM type switch (-8 or -16) used twice");
eeprom_type = EEPROM_TYPE_16BIT_ADDR;
break;
case 'x':
want_hex++;
break;
case 'd':
dummy++;
break;
case '8':
die_if(eeprom_type, "EEPROM type switch (-8 or -16) used twice");
eeprom_type = EEPROM_TYPE_8BIT_ADDR;
break;
case 'f':
force++;
break;
case 'q':
g_quiet++;
break;
case 'h':
usage_if(1);
break;
default:
die_if(op != 0, "Both read and write requested");
arg = optarg;
op = ret;
}
}
if(!eeprom_type)
eeprom_type = EEPROM_TYPE_8BIT_ADDR; // default
usage_if(op == 0); // no switches
// set device and i2c_addr reading from cmdline or env
device = i2c_addr_s = 0;
switch(argc - optind)
{
case 0:
device = getenv(ENV_DEV);
i2c_addr_s = getenv(ENV_I2C_ADDR);
break;
case 1:
if(stat(argv[optind], &st) != -1)
{
device = argv[optind];
i2c_addr_s = getenv(ENV_I2C_ADDR);
} else {
device = getenv(ENV_DEV);
i2c_addr_s = argv[optind];
}
break;
case 2:
device = argv[optind++];
i2c_addr_s = argv[optind];
break;
default:
usage_if(1);
}
usage_if(!device || !i2c_addr_s);
i2c_addr = strtoul(i2c_addr_s, 0, 0);
print_info("eeprog %s, a 24Cxx EEPROM reader/writer\n", VERSION);
print_info("Copyright (c) 2003 by Stefano Barbato - All rights reserved.\n");
print_info(" Bus: %s, Address: 0x%x, Mode: %dbit\n",
device, i2c_addr,
(eeprom_type == EEPROM_TYPE_8BIT_ADDR ? 8 : 16) );
if(dummy)
{
fprintf(stderr, "Dummy mode selected, nothing done.\n");
return 0;
}
die_if(eeprom_open(device, i2c_addr, eeprom_type, &e) < 0,
"unable to open eeprom device file (check that the file exists and that it's readable)");
switch(op)
{
case 'r':
if(force == 0)
confirm_action();
size = 1; // default
parse_arg(arg, &memaddr, &size);
print_info(" Reading %d bytes from 0x%x\n", size, memaddr);
read_from_eeprom(&e, memaddr, size, want_hex);
break;
case 'w':
if(force == 0)
confirm_action();
parse_arg(arg, &memaddr, &size);
print_info(" Writing stdin starting at address 0x%x\n",
memaddr);
write_to_eeprom(&e, memaddr);
break;
default:
usage_if(1);
exit(1);
}
eeprom_close(&e);
return 0;
}