diff options
Diffstat (limited to 'src/drivers/rgbled/rgbled.cpp')
| -rw-r--r-- | src/drivers/rgbled/rgbled.cpp | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/src/drivers/rgbled/rgbled.cpp b/src/drivers/rgbled/rgbled.cpp index ea87b37d9..727c86e02 100644 --- a/src/drivers/rgbled/rgbled.cpp +++ b/src/drivers/rgbled/rgbled.cpp @@ -172,7 +172,20 @@ RGBLED::probe() bool on, powersave; uint8_t r, g, b; - ret = get(on, powersave, r, g, b); + /** + this may look strange, but is needed. There is a serial + EEPROM (Microchip-24aa01) on the PX4FMU-v1 that responds to + a bunch of I2C addresses, including the 0x55 used by this + LED device. So we need to do enough operations to be sure + we are talking to the right device. These 3 operations seem + to be enough, as the 3rd one consistently fails if no + RGBLED is on the bus. + */ + if ((ret=get(on, powersave, r, g, b)) != OK || + (ret=send_led_enable(false) != OK) || + (ret=send_led_enable(false) != OK)) { + return ret; + } return ret; } @@ -561,7 +574,7 @@ rgbled_main(int argc, char *argv[]) int ch; /* jump over start/off/etc and look at options first */ - while ((ch = getopt(argc - 1, &argv[1], "a:b:")) != EOF) { + while ((ch = getopt(argc, argv, "a:b:")) != EOF) { switch (ch) { case 'a': rgbledadr = strtol(optarg, NULL, 0); @@ -577,7 +590,12 @@ rgbled_main(int argc, char *argv[]) } } - const char *verb = argv[1]; + if (optind >= argc) { + rgbled_usage(); + exit(1); + } + + const char *verb = argv[optind]; int fd; int ret; @@ -598,6 +616,9 @@ rgbled_main(int argc, char *argv[]) if (g_rgbled == nullptr) { // fall back to default bus + if (PX4_I2C_BUS_LED == PX4_I2C_BUS_EXPANSION) { + errx(1, "init failed"); + } i2cdevice = PX4_I2C_BUS_LED; } } |