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(008) CubeIDE Implementation of USB Peripherals*
(018) C99 pointer*
(019) C99 With only value assignment*
(022) POSIX pthread multi-threads mutex*
(023) POSIX pthread multi-threads programming*
(027) C99 time and wait*
(028) High-precision calculation with GMP*
(029) Web Service Lib*
(030) International Components for Unicode (ICU)*
(031) Performance of C is higher than C++, because...*
🕹️(030) Bottom half operation decrease semaphore
FreeRTOS的底半操作中，一般处理函数的写法（伪代码）：
while(1){
TakeSemaphore();
dealWithBusinessLogic();
}