RTC auf true
Diff: rtos/Kernel.cpp
- Revision:
- 0:38ceb79fef03
diff -r 000000000000 -r 38ceb79fef03 rtos/Kernel.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rtos/Kernel.cpp Wed Nov 28 15:10:15 2018 +0000 @@ -0,0 +1,76 @@ +/* mbed Microcontroller Library + * Copyright (c) 2017 ARM Limited + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "rtos/Kernel.h" + +#include "mbed.h" +#include "rtos/rtos_idle.h" +#include "rtos/rtos_handlers.h" + +namespace rtos { + +uint64_t Kernel::get_ms_count() +{ + // CMSIS-RTOS 2.1.0 and 2.1.1 differ in the time type. We assume + // our header at least matches the implementation, so we don't try looking + // at the run-time version report. (There's no compile-time version report) + + // 2.1.0 uint64_t osKernelGetTickCount(void), not documented as callable from ISR (but RTX does allow) + // 2.1.1 uint32_t osKernelGetTickCount(void), callable from ISR + // 2.1.x who knows? We assume could go back to uint64_t + if (sizeof osKernelGetTickCount() == sizeof(uint64_t)) { + return osKernelGetTickCount(); + } else { /* assume 32-bit */ + // Based on suggestion in CMSIS-RTOS 2.1.1 docs, but with reentrancy + // protection for the tick memory. We use critical section rather than a + // mutex, as hopefully this method can be callable from interrupt later - + // only thing currently preventing it is that pre CMSIS RTOS 2.1.1, it's + // not defined as safe. + // We assume this is called multiple times per 32-bit wrap period (49 days). + static uint32_t tick_h, tick_l; + + core_util_critical_section_enter(); + // The 2.1.1 API says this is legal from an ISR - we assume this means + // it's also legal with interrupts disabled. RTX implementation kind + // of conflates the two. + uint32_t tick32 = osKernelGetTickCount(); + if (tick32 < tick_l) { + tick_h++; + } + tick_l = tick32; + uint64_t ret = ((uint64_t) tick_h << 32) | tick_l; + core_util_critical_section_exit(); + return ret; + } +} + +void Kernel::attach_idle_hook(void (*fptr)(void)) +{ + rtos_attach_idle_hook(fptr); +} + +void Kernel::attach_thread_terminate_hook(void (*fptr)(osThreadId_t id)) +{ + rtos_attach_thread_terminate_hook(fptr); +} + +}