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* Use polled waiting on platforms that support it Due to context switching overhead waiting a very short amount of time on a sleeping thread is often not accurate and in fact not usable for timing critical usage i.e. in a driver. Thus we use polled waiting for ranges in the us range on platforms that support it instead. The fallback is the thread sleeping mechanism. This includes: * ARM platforms with CYCCNT register (ARMv7, ARMv8) this is incremented at CPU clock frequency * GD32VF103 RISC-V port with CSR_MCYCLE register this is incremented at CPU clock frequency * RP2040 ARMv6 port which uses the integrated timer peripheral which is incremented with a fixed 1MHz frequency * Use wait_us() instead of chSysPolledDelayX ...as it is powered by busy waiting now. * Add chibios waiting methods test bench |
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| .. | ||
| boards | ||
| bootloaders | ||
| converters | ||
| drivers | ||
| vendors/RP | ||
| _pin_defs.h | ||
| _timer.h | ||
| _wait.c | ||
| _wait.h | ||
| atomic_util.h | ||
| chibios_config.h | ||
| flash.mk | ||
| gd32v_compatibility.h | ||
| gpio.h | ||
| hardware_id.c | ||
| platform_deps.h | ||
| platform.c | ||
| platform.mk | ||
| sleep_led.c | ||
| suspend.c | ||
| synchronization_util.c | ||
| syscall-fallbacks.c | ||
| timer.c | ||
| wait.c | ||