IBASE MRS-801-RE - Manual (Page 83)

Copyright © 2013 IBASE Technology Inc. All Rights Reserved.
75 IBASE Technology Inc.
/* Walk the list of i2c busses, looking for the one with the
right name */
for (i = 0; adapters[i].name; i++) {
if (strcmp(adapters[i].name, bus_name) == 0) {
if (i2cbus >= 0) {
fprintf(stderr,
"Error: I2C bus name is not unique!\n");
i2cbus = -4;
goto done;
}
i2cbus = adapters[i].nr;
}
}
if (i2cbus == -1)
fprintf(stderr, "Error: I2C bus name doesn't match any "
"bus present!\n");
done:
free_adapters(adapters);
return i2cbus;
}
/*
* Parse an I2CBUS command line argument and return the corresponding
* bus number, or a negative value if the bus is invalid.
*/
int lookup_i2c_bus(const char *i2cbus_arg)
{
unsigned long i2cbus;
char *end;
i2cbus = strtoul(i2cbus_arg, &end, 0);
if (*end || !*i2cbus_arg) {
/* Not a number, maybe a name? */
return lookup_i2c_bus_by_name(i2cbus_arg);
}
if (i2cbus > 0xFFFFF) {