初次使用RTL不是很懂，這是從別的論壇復(fù)制回來的感覺不錯能對初學(xué)者提供一些感覺。
Keil ARTX(Advanced Real-Time eXecutive)是Keil為ARM 系列所提供的一個小型實時操作系統(tǒng),整合于其UV3開發(fā)環(huán)境之中.在下載并安裝了RealView MDK個人學(xué)習(xí)版后，ARTX同時安裝到了C:\Keil\ARM\RL\RTX目錄下，在C:\Keil\ARM\Boards\Keil\MCBSTM32\STLIB_RTX_Blinky目錄下有STM32的例子程序。經(jīng)過簡單修改，運行在萬利開發(fā)板上。
#include
#include
OS_TID t_phaseA; //分配任務(wù)ID號
OS_TID t_phaseB;
OS_TID t_phaseC;
OS_TID t_phaseD;
#define LED_A GPIO_Pin_4
#define LED_B GPIO_Pin_5
#define LED_C GPIO_Pin_6
#define LED_D GPIO_Pin_7
#define LED_On(led) GPIO_SetBits(GPIOC, led)
#define LED_Off(led) GPIO_ResetBits(GPIOC, led)
extern void SetupClock (void);
extern void SetupLED (void);
void phaseA (void) __task {
for (;;) {
LED_On (LED_A);
os_dly_wait (100);
LED_Off(LED_A);
os_dly_wait (100);
}
}
void phaseB (void) __task {
for (;;) {
LED_On (LED_B);
os_dly_wait (100);
LED_Off(LED_B);
os_dly_wait (100);
}
}
void phaseC (void) __task {
for (;;) {
LED_On (LED_C);
os_dly_wait (100);
LED_Off(LED_C);
os_dly_wait (100);
}
}
void phaseD (void) __task {
for (;;) {
LED_On (LED_D);
os_dly_wait (100);
LED_Off(LED_D);
os_dly_wait (100);
}
}
void init (void) __task {
t_phaseA = os_tsk_create (phaseA, 0);
os_dly_wait (50);
t_phaseB = os_tsk_create (phaseB, 0);
os_dly_wait (50);
t_phaseC = os_tsk_create (phaseC, 0);
os_dly_wait (50);
t_phaseD = os_tsk_create (phaseD, 0);
os_tsk_delete_self ();
}
int main (void) {
SetupClock();
SetupLED ();
os_sys_init (init);
}
經(jīng)過初試化后，os_sys_init (init)啟動了初試化任務(wù)。在初試化任務(wù)中，又先后啟動了4個任務(wù)，啟動后，
刪除初試化任務(wù)。這4個任務(wù)各自控制一個LED的開關(guān)。
|
