ucos基于stm32上的移植.docVIP

ucos-ii和ucguistm32上的移植uc/os-ii移植笔记 os_cpu.h 与编译器相关的数据类型 typedef???unsigned?char???BOOLEAN; typedef???unsigned?char???INT8U;????????????????????/*?Unsigned??8?bit?quantity?*/ typedef???signed???char???INT8S;????????????????????/*?Signed????8?bit?quantity??*/ typedef???unsigned?short???INT16U;???????????????????/*?Unsigned?16?bit?quantity?*/ typedef???signed???short??INT16S;???????????????????/*?Signed???16?bit?quantity?*/ typedef???unsigned?int?????INT32U;???????????????????/*?Unsigned?32?bit?quantity?*/ typedef???signed???int????INT32S;???????????????????/*?Signed???32?bit?quantity??*/ typedef???float???????????FP32;?????????????????????/*?Single?precision?floating?point*/ typedef???double?????????FP64;?????????????????????/*?Double?precision?floating?point?*/ typedef???unsigned?int????OS_STK;???????????????????/*?堆栈类型为32位?Each?stack?entry?is?32-bit?wide?*/ typedef???unsigned?int????OS_CPU_SR;????????????????/*?Define?size?of?CPU?status?register?(PSR?=?32?bits)?*/ 与ARM?处理器相关的代码 #define??OS_CRITICAL_METHOD???3??????//进入临界段的方法 #if??????OS_CRITICAL_METHOD?==?3 #define??OS_ENTER_CRITICAL()???{cpu_sr?=?OS_CPU_SR_Save();} //关中断 #define??OS_EXIT_CRITICAL()?????{OS_CPU_SR_Restore(cpu_sr);} //开中断 #endif #if? OS_CRITICAL_METHOD?==?3 OS_CPU_SR?? OS_CPU_SR_Save(void); void??????? OS_CPU_SR_Restore(OS_CPU_SR?cpu_sr); #endif void???????OSCtxSw(void); void???????OSIntCtxSw(void); void???????OSStartHighRdy(void); 设置堆栈的增长方向 #define??OS_STK_GROWTH????1 ?/*堆栈由高地址向低地址增长*/ OS_CPU_C.C 用C?语言编写六个操作系统相关的函数 OS_STK??*OSTaskStkInit?( void???(*task)(void?*p_arg),? void???*p_arg,? OS_STK??*ptos, INT16U??opt) { ????OS_STK??*stk; ????(void)opt;???????????????????????????????????/*?opt?is?not?used,?prevent?warning?????????????????*/ ????stk???????=?ptos;????????????????????????????/*?Load?stack?pointer?????????????????????????????????*/ ?????????????????????????????????????????????????/*?Registers?stacked?as?if?auto-saved?on?exception????*/ ????*(stk)???=?(INT32U)0;?????????????/*?xPSR???