stm32任务切换

ranguangxu1012

创建了两个任务，一个用来LED闪烁，一个用来做AD，用下面这种方式都会运行不走。
led1的优先级是7 ， adc的优先级是8
void led1_task(void *pdata)

{

#if OS_CRITICAL_METHOD == 3

OS_CPU_SR cpu_sr;

#endif

cpu_sr = cpu_sr;

pdata = pdata;

while(1){

OSTaskSuspend(ADC_TASK_PRIO);

LED0_ON;

OSTimeDlyHMSM(0, 0, 1, 0);

LED0_OFF;

OSTimeDlyHMSM(0, 0, 1, 0);

OSTaskResume(ADC_TASK_PRIO);

OSTaskSuspend(OS_PRIO_SELF);

// adc1 = Get_AD(ADC1);

// adc11 = ((float)adc1*3.3/4096);

// printf("PC5的电压值是 = %5.3f\r\n", adc11);

};

}

void adc_task(void *pdata)

{

#if OS_CRITICAL_METHOD == 3

OS_CPU_SR cpu_sr;

#endif

cpu_sr = cpu_sr;

pdata = pdata;

while(1)

{

LED3_ON;

adc1 = Get_AD(ADC1);

adc11 = ((float)adc1*3.3/4096);

printf("PC5的电压值是 = %5.3f\r\n", adc11);

OSTimeDlyHMSM(0, 0, 1, 0);

LED3_OFF;

OSTimeDlyHMSM(0, 0, 1, 0);

OSTaskSuspend(OS_PRIO_SELF);

OSTaskResume(LED1_TASK_PRIO);

};

}
改成这样就可以运行了，不晓得是不是任务切换有问题，还是什么问题。

void led1_task(void *pdata)

{

#if OS_CRITICAL_METHOD == 3

OS_CPU_SR cpu_sr;

#endif

cpu_sr = cpu_sr;

pdata = pdata;

while(1){

// OSTaskSuspend(ADC_TASK_PRIO);

LED0_ON;

OSTimeDlyHMSM(0, 0, 1, 0);

LED0_OFF;

OSTimeDlyHMSM(0, 0, 1, 0);

// OSTaskResume(ADC_TASK_PRIO);

// OSTaskSuspend(OS_PRIO_SELF);

adc1 = Get_AD(ADC1);

adc11 = ((float)adc1*3.3/4096);

printf("PC5的电压值是 = %5.3f\r\n", adc11);

};

}

void adc_task(void *pdata)

{

#if OS_CRITICAL_METHOD == 3

OS_CPU_SR cpu_sr;

#endif

cpu_sr = cpu_sr;

pdata = pdata;

while(1)

{

LED3_ON;

adc1 = Get_AD(ADC1);

adc11 = ((float)adc1*3.3/4096);

// printf("PC5的电压值是 = %5.3f\r\n", adc11);

// OSTimeDlyHMSM(0, 0, 1, 0);

LED3_OFF;

OSTimeDlyHMSM(0, 0, 1, 0);

// OSTaskSuspend(OS_PRIO_SELF);

// OSTaskResume(LED1_TASK_PRIO);

};

}

正点原子

可以仿真跟踪下,就比较容易找问题.
单纯看代码,貌似问题出在OSTaskSuspend这里.

ranguangxu1012

回复【2楼】正点原子:
--------------------------------OK