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AP_BoardConfig: work around issues with bad components on some FMUv4 boards

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some pixracer copies have poor components which can cause sensor bus
brownout on boot. This resets the sensor bus for 20ms on boot to try
to get clean sensor startup
This commit is contained in:
Andrew Tridgell 2016-09-08 11:29:53 +10:00
parent 9b89b4f561
commit aa4cde1aae
1 changed files with 12 additions and 0 deletions
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12
libraries/AP_BoardConfig/px4_drivers.cpp
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@ -51,6 +51,7 @@ extern "C" {
int mb12xx_main(int, char **);
int pwm_input_main(int, char **);
int uavcan_main(int, char **);
int fmu_main(int, char **);
};
@ -468,6 +469,17 @@ void AP_BoardConfig::px4_start_fmuv4_sensors(void)
*/
void AP_BoardConfig::px4_start_common_sensors(void)
{
#if defined(CONFIG_ARCH_BOARD_PX4FMU_V4)
/*
this works around an issue with some FMUv4 hardware (eg. copies
of the Pixracer) which have incorrect components leading to
sensor brownout on boot
*/
if (px4_start_driver(fmu_main, "fmu", "sensor_reset 20")) {
printf("FMUv4 sensor reset complete\n");
}
#endif
if (px4_start_driver(ms5611_main, "ms5611", "start")) {
printf("ms5611 started OK\n");
} else {