diff options
| -rw-r--r-- | src/drivers/blinkm/blinkm_linux.cpp | 4 | ||||
| -rw-r--r-- | src/drivers/device/i2c_linux.cpp | 10 |
2 files changed, 12 insertions, 2 deletions
diff --git a/src/drivers/blinkm/blinkm_linux.cpp b/src/drivers/blinkm/blinkm_linux.cpp index e38fb408e..5a139a710 100644 --- a/src/drivers/blinkm/blinkm_linux.cpp +++ b/src/drivers/blinkm/blinkm_linux.cpp @@ -943,6 +943,10 @@ blinkm_main(int argc, char *argv[]) int x; + if (argc < 2) { + blinkm_usage(); + return 1; + } for (x = 1; x < argc; x++) { if (strcmp(argv[x], "-b") == 0 || strcmp(argv[x], "--bus") == 0) { if (argc > x + 1) { diff --git a/src/drivers/device/i2c_linux.cpp b/src/drivers/device/i2c_linux.cpp index 1a3492c8f..e62da8797 100644 --- a/src/drivers/device/i2c_linux.cpp +++ b/src/drivers/device/i2c_linux.cpp @@ -97,9 +97,15 @@ I2C::init() return ret; } - _fd = ::open(_dname.c_str(), O_RDWR); + // Open the actual I2C device and map to the virtual dev name + char str[22]; + + // Fixme - not sure bus is the right mapping here + // may have to go through /sys/bus/i2c interface to find the right map + snprintf(str, sizeof(str), "/dev/i2c-%d", _bus); + _fd = ::open(str, O_RDWR); if (_fd < 0) { - warnx("could not open %s", _dname.c_str()); + warnx("could not open %s for virtual device %s", str, _dname.c_str()); return -errno; } |