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
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hwdef.dat	HAL_ChibiOS: switched to system timer for AP_HAL::micros()	2018-02-14 18:27:00 +11:00