Thread: returning value from one threaded function to other threaded function

Hello Guys,

I am using two threads and i want to take value of a function from one thread and use it in other.

I am not good at the concepts of threads.

Here is the following code:

Code:

void ThreadA(void const *argument)
{          
    uint32_t status = I2S002_FAIL;

    status = I2S002_Config(&I2S002_Handle0, &I2SConfig_U0C1_A);
    if (status != DAVEApp_SUCCESS)
    {
        while (1);
    }

    while (1) {
        status = I2S002_RegisterTxPPBuf(&I2S002_Handle0, (uint32_t*) TXBuf,PLen);
        }
....
....
}

void ThreadB(void const *argument)
 {
 FILE *ptr;
 uint16_t result, block_size;
 uint16_t num_blocks;
 status_t status1 ;
 status_t Status ;
 block_size = sizeof(temp_buffer);
 num_blocks = sizeof(char);
 Status =  mount(0, &myfsObject);
 if(Status != DAVEApp_SUCCESS)
 {
 while(1);
 }
 ptr = fopen("test.raw", "r+");
 fseek(ptr, 0, SEEK_SET);
 result = fread(&temp_buffer, num_blocks, block_size, ptr);
 if(result == 0)
 {
     while(1);
 }

 status1 = fclose(ptr);
return;
}

int main(void)

{...
...
 ThreadId = osThreadCreate(osThread(ThreadB),NULL);
     osKernelStart();

ThreadC_id = osThreadCreate(osThread(ThreadA), NULL); 
    osKernelStart();
...
...
}

So, i want to use the return value of temp_buffer from ThreadB into Thread C and want to put this value to TXBuf in ThreadA...

any help would be highly appreciated
Thanks

You could use a mutex as a status ready indicator, or if you want to be able to queue up statuses, then perhaps mutexes (for temporary ownership during queue updates), semaphores (for count of elements on a queue), and some type of queueing method (circular buffer or linked list).