下载网站所有网页,带数据库的网站怎么建,有什么网站建设软件,浙江移动网站建设制作目录#xff1a; 一、安装和配置CMSIS_RTOS.1.打开KEIL工程#xff0c;点击MANAGE RUN-TIME Environment图标。2.勾选CMSIS CORE和RTX.3.配置RTOS 时钟频率、任务栈大小和数量#xff0c; 软件定时器. 二、CMSIS_RTOS内核启动和创建线程。1.包含头文件。2.内核初始化和启动。… 目录 一、安装和配置CMSIS_RTOS.1.打开KEIL工程点击MANAGE RUN-TIME Environment图标。2.勾选CMSIS CORE和RTX.3.配置RTOS 时钟频率、任务栈大小和数量 软件定时器. 二、CMSIS_RTOS内核启动和创建线程。1.包含头文件。2.内核初始化和启动。3.创建线程。 三、Signals、Semaphores信号量、互斥锁、消息队列、Memory pool、消息邮箱。1.Signals。2.Semaphores信号量。3.互斥锁4.消息队列5.Memory pool6.消息邮箱 一、安装和配置CMSIS_RTOS.
1.打开KEIL工程点击MANAGE RUN-TIME Environment图标。 2.勾选CMSIS CORE和RTX. 3.配置RTOS 时钟频率、任务栈大小和数量 软件定时器. 二、CMSIS_RTOS内核启动和创建线程。
1.包含头文件。
#include cmsis_os.h // CMSIS RTOS header file2.内核初始化和启动。
int main(){
osKernelInitialize (); // initialize CMSIS-RTOS
..do something..
osKernelStart (); while(1){}
}3.创建线程。
osThreadId main_ID,led_ID1,led_ID2;
osThreadDef(led_thread2, osPriorityAboveNormal, 1, 0);
osThreadDef(led_thread1, osPriorityNormal, 1, 0);void led_thread1 (void const *argument) {}
void led_thread2 (void const *argument) {}int main(){osKernelInitialize (); // initialize CMSIS-RTOS// create thread functions that start executing,led_ID1 osThreadCreate(osThread(led_thread1), 0);led_ID2 osThreadCreate(osThread(led_thread2), 0);osKernelStart (); while(1){}}三、Signals、Semaphores信号量、互斥锁、消息队列、Memory pool、消息邮箱。
1.Signals。
每个线程有16个flag,任何线程也可以清除其它线程的信号.
int32_t osSignalSet ( osThreadId thread_id, int32_t signals);
int32_t osSignalClear ( osThreadId thread_id, int32_t signals);eg:
1.设置信号
osSignalSet (led_ID2,0x01);
2.等待信号触发
osSignalWait (0x01,osWaitForever);2.Semaphores信号量。 // 定义变量osSemaphoreId sem1;osSemaphoreDef(sem1);.....// 任务1void led_thread1 (void const *argument) {while(1){osSemaphoreRelease(sem1);...}}// 任务2void led_thread2 (void const *argument) {while(1){osSemaphoreWait(sem1, osWaitForever);....}}// 初始化int main(){...sem1 osSemaphoreCreate(osSemaphore(sem1), 0);...}3.互斥锁 // 定义变量osMutexId uart_mutex;osMutexDef (uart_mutex);.....// 任务1void led_thread1 (void const *argument) {while(1){osMutexWait(uart_mutex, osWaitForever);...do something...osMutexRelease(uart_mutex); }}// 初始化int main(){...uart_mutex osMutexCreate(osMutex(uart_mutex));...}4.消息队列 // 定义变量osMessageQId Q_LED;osMessageQDef (Q_LED,16_Message_Slots,unsigned int);osEvent result;.....// 任务1void led_thread1 (void const *argument) {while(1){osMessagePut(Q_LED,0x0,osWaitForever);...}}// 任务2void led_thread2 (void const *argument) {while(1){result osMessageGet(Q_LED,osWaitForever);LED_data result.value.v;....}}// 初始化int main(){...Q_LED osMessageCreate(osMessageQ(Q_LED),NULL);...}5.Memory pool // 定义变量typedef struct {uint8_t LED0;uint8_t LED1;uint8_t LED2;uint8_t LED3;} memory_block_t;osPoolDef(led_pool,ten_blocks,memory_block_t);osPoolId( led_pool);// 任务1void led_thread1 (void const *argument) {while(1){*led_data (memory_block_t *) osPoolAlloc(led_pool);led_data-LED0 0;led_data-LED1 1;led_data-LED2 2;led_data-LED3 3;osMessagePut(Q_LED,(uint32_t)led_data,osWaitForever);...}}// 任务2void led_thread2 (void const *argument) {osEvent event; memory_block_t * received;while(1){ event osMessageGet(Q_LED,osWatiForever);*received (memory_block *)event.value.p;led_on(received-LED0);....}}// 初始化int main(){...led_pool osPoolCreate(osPool(led_pool));...}6.消息邮箱 typedef struct {uint8_t LED0;uint8_t LED1;uint8_t LED2;uint8_t LED3;} mail_format;osMailQDef(mail_box, sixteen_mail_slots, mail_format);osMailQId mail_box;// 任务1void led_thread1 (void const *argument) {while(1){LEDtx (mail_format*)osMailAlloc(mail_box, osWaitForever);LEDtx-LED0 led0[index];LEDtx-LED1 led1[index];LEDtx-LED2 led2[index];LEDtx-LED3 led3[index];osMailPut(mail_box, LEDtx);...}}// 任务2void led_thread2 (void const *argument) {while(1){ evt osMailGet(mail_box, osWaitForever); if(evt.status osEventMail){LEDrx (mail_format*)evt.value.p;LED_Out((LEDrx-LED0|LEDrx-LED1|LEDrx-LED2|LEDrx-LED3)8);osMailFree(mail_box, LEDrx);....}}// 初始化int main(){...mail_box osMailCreate(osMailQ(mail_box), NULL);...}
