From 2728603fe6d73e805a539d337fd01051c46ca806 Mon Sep 17 00:00:00 2001 From: Joel Challis Date: Fri, 19 Nov 2021 18:41:02 +0000 Subject: Move tmk_core/common/ (#13918) --- tmk_core/common/chibios/timer.c | 47 ----------------------------------------- 1 file changed, 47 deletions(-) delete mode 100644 tmk_core/common/chibios/timer.c (limited to 'tmk_core/common/chibios/timer.c') diff --git a/tmk_core/common/chibios/timer.c b/tmk_core/common/chibios/timer.c deleted file mode 100644 index 9f664e1f79..0000000000 --- a/tmk_core/common/chibios/timer.c +++ /dev/null @@ -1,47 +0,0 @@ -#include - -#include "timer.h" - -static uint32_t reset_point = 0; -#if CH_CFG_ST_RESOLUTION < 32 -static uint32_t last_systime = 0; -static uint32_t overflow = 0; -#endif - -void timer_init(void) { timer_clear(); } - -void timer_clear(void) { - reset_point = (uint32_t)chVTGetSystemTime(); -#if CH_CFG_ST_RESOLUTION < 32 - last_systime = reset_point; - overflow = 0; -#endif -} - -uint16_t timer_read(void) { return (uint16_t)timer_read32(); } - -uint32_t timer_read32(void) { - uint32_t systime = (uint32_t)chVTGetSystemTime(); - -#if CH_CFG_ST_RESOLUTION < 32 - // If/when we need to support 64-bit chips, this may need to be modified to match the native bit-ness of the MCU. - // At this point, the only SysTick resolution allowed other than 32 is 16 bit. - // In the 16-bit case, at: - // - CH_CFG_ST_FREQUENCY = 100000, overflow will occur every ~0.65 seconds - // - CH_CFG_ST_FREQUENCY = 10000, overflow will occur every ~6.5 seconds - // - CH_CFG_ST_FREQUENCY = 1000, overflow will occur every ~65 seconds - // With this implementation, as long as we ensure a timer read happens at least once during the overflow period, timing should be accurate. - if (systime < last_systime) { - overflow += ((uint32_t)1) << CH_CFG_ST_RESOLUTION; - } - - last_systime = systime; - return (uint32_t)TIME_I2MS(systime - reset_point + overflow); -#else - return (uint32_t)TIME_I2MS(systime - reset_point); -#endif -} - -uint16_t timer_elapsed(uint16_t last) { return TIMER_DIFF_16(timer_read(), last); } - -uint32_t timer_elapsed32(uint32_t last) { return TIMER_DIFF_32(timer_read32(), last); } -- cgit v1.2.3