3 Commits

Author	SHA1	Message	Date
Michael Schaeuble	5abee359d6	Remove PPS GPIO interrupt when the rate is higher than 20Hz ... If the PPS GPIO is exposed to a signal with high frequency changes, a lot of interrupts are scheduled and the handling of these calls can worst-case starve flight critical processes leading to a loss of control. Since PPS is not flight critical, we now give up the PPS functionality and stop the interrupts to prevent the starvation of other processes.	2022-07-04 11:32:33 +02:00
Michael Schaeuble	5ad8b84dec	Fix PPS based UTC timestamp in camera trigger and capture messages ... The existing implementation has about 100ms difference to a reference clock. With the changes this error less than 25us. - Use sensor_gps messages with hrt timestamps as RTC reference and not the system realtime clock. The PPS interrupt can then be aligned with the GPS clock system. - Keep fallback based on system RTC when no PPS pulse was captured	2021-12-17 07:56:08 +01:00
Igor Mišić	72b1db4a63	pps_capture: implementation of pulse per second capture driver	2021-12-17 07:56:08 +01:00