9 Commits

Author	SHA1	Message	Date
Ivannikov Kirill	3ab1b29397	AP_HAL_ChibiOS: error if system clock not 1mhz on 16 CH_CFG_ST_RESOLUTION. prevent variable overflow ... if CH_CFG_ST_FREQUENCY not match 1000000U on 16 bit CH_CFG_ST_RESOLUTION we try to multiply now *= 1000000U/CH_CFG_ST_FREQUENCY; it may overflow 16 bit value.	2020-04-26 19:58:54 +10:00
Andrew Tridgell	f732a482fe	HAL_ChibiOS: support wider range of clock frequencies	2019-12-20 16:50:48 +11:00
Andrew Tridgell	4f429e6c5a	HAL_ChibiOS: fixed handling of 16bit timer wrap ... this fixes #12948	2019-12-09 12:43:39 +11:00
Andrew Tridgell	4674a1c68d	HAL_ChibiOS: fixed system time for clocks other than 1MHz ... needed for IOMCU	2018-10-17 15:11:28 +11:00
Andrew Tridgell	33076be585	HAL_ChibiOS: fixed handling of 16 bit timers ... when we have a 16 bit timer then systime_t is 16 bit, and we need to handle wrap of get_systime_us32()	2018-08-26 18:34:26 +10:00
Andrew Tridgell	385f735799	HAL_ChibiOS: avoid 64 bit maths in AP_HAL::micros() ... this saves a few cycles	2018-08-08 21:24:49 +10:00
Siddharth Purohit	395c48933c	HAL_ChibiOS: move tto using updated time conversion API	2018-08-03 13:44:59 +10:00
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