Commit Graph

2 Commits

Author SHA1 Message Date
Andrew Tridgell 427e00dd41 HAL_ChibiOS: switched to system timer for AP_HAL::micros()
this uses the ChibiOS system timer instead of a separate GPT timer for
the core ChibiOS timer. The advantage is it saves us a timer, plus it
changes ChibiOS to use a 1MHz clock on its timer, which gives us
higher resolution for delays.

This has a remarkable effect on timing jitter, reducing it greatly
2018-02-14 18:27:00 +11:00
Andrew Tridgell 8b6bab7b17 HAL_Chibios: added ChibiOS HAL
this is based on initial work by Sid, reset here for easier merging
2018-01-15 11:46:02 +11:00