FreeRTOS threads are not working parallely

[amarjeet]

Hi,

I am using sdk 14.2.0 ble_app_hrs_freertos example.

two threads i have created, threads are having nested loop inside.

for this case, thread is stucking inside  loop.

and if i simply put delay in thread, it seems both threads are working one by one (synchronously).

lets say  i am printing a statment inside thread1 aftre each 1 sec, and other statment inside thread after each 1 sec.

then both threads statments are printing after each 2 sec.(instead of each 1 sec).

here's the code snippet:

if (pdPASS != xTaskCreate(led_thread, "LED", 256, NULL, 1, &m_led_thread))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}

if (pdPASS != xTaskCreate(vib_motor_thread, "VIB_MOTOR", 256, NULL, 1, &m_vib_motor_thread))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
// Activate deep sleep mode.
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;

// Start FreeRTOS scheduler.
vTaskStartScheduler();

threads:

static void led_thread(void * arg)
{
UNUSED_PARAMETER(arg);

while (1)
{
// printf("\r\nlog\r\n");
// NRF_LOG_FLUSH();
all_led_off();
printf("\r\nLED OFF \r\n");
nrf_delay_ms(1000);

all_led_on();
printf("\r\nLED ON \r\n");
nrf_delay_ms(1000);
vTaskSuspend(NULL); // Suspend myself
}
}

static void vib_motor_thread(void * arg)
{
UNUSED_PARAMETER(arg);
while(1)
{
pwm_update_duty_cycle(100);
nrf_delay_ms(1000);

pwm_update_duty_cycle(0);
nrf_delay_ms(1000);

pwm_start();
vTaskSuspend(NULL); // Suspend myself
}
}

void vApplicationIdleHook( void )
{
vTaskResume(m_led_thread);
vTaskResume(m_vib_motor_thread);
}

what might be the problem.please guide me.

Thanks,

Amarjeet

[Turbo J]

Expected (and documented) behaviour of FreeRTOS.

Workaround: Use vTaskDelay() instead of nrf_delay_ms().

[amarjeet]

Thanks turbo...its working accordingly...but stilll nested loop problem is not solved.

Here's the snippet:

static void audio_thread(void * arg)
{
UNUSED_PARAMETER(arg);
printf("%d\r\n",airtel_size);

while(1)
{

for(uint8_t i = 0; i <= airtel_size; i++)
{
//printf("%d\r\n",i);
vTaskDelay(125);
pwm_update_duty_cycle(airtel[i]);
}
vTaskSuspend(NULL); // Suspend myself
}
}