how to merge the uart and timer program

[ps_anu]

hi... folks 

i am using nrf53832 , i want to merge the uart and timer . i tried my level best but timer is not working 

help me

thanks in advance 

[Einar Thorsrud]

Hi,

Can you elaborate on what you have done / how you have done it, and how it is not working? Have you done any debugging to see what is going on?

[ps_anu]

yeah , i merged the timer example program with uart . but i couldn't find , my timer is not running 

[ps_anu]

int main(void)
  {
    bool erase_bonds;

    // Initialize.
    uart_init();
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();
 
    // Start execution.
    printf("\r\nUART started.\r\n");
    NRF_LOG_INFO("Debug logging for UART over RTT started.");
    advertising_start();
     twi_init();
     MAX30_set_mode();
     
     while(true)
   
    

    nrf_delay_ms(5000);
    m_xfer_done == false;
   
  
    uint32_t time_ms = 500; //Time(in miliseconds) between consecutive compare events.
    uint32_t time_ticks;
    uint32_t err_code = NRF_SUCCESS;

    //Configure all leds on board.
    bsp_board_init(BSP_INIT_LEDS);

    //Configure TIMER_LED for generating simple light effect - leds on board will invert his state one after the other.
    nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
   err_code = nrf_drv_timer_init(&TIMER_SENSOR, &timer_cfg, timer_sensor_event_handler);
    APP_ERROR_CHECK(err_code);

    time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_SENSOR, time_ms);


   
    
    }
    
    

[Einar Thorsrud]

It seems you have copied the timer code from the SDK timer example, but you have forgotten to start it (you are not using your calculated time_ticks variable for anything). Referring to the example and assuming that is what you want to do, you are missing the call to nrf_drv_timer_extended_compare(). Your timer code should probably be something similar to this:

    //Configure TIMER_SENSOR for generating simple light effect - leds on board will invert his state one after the other.
    nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
    err_code = nrf_drv_timer_init(&TIMER_SENSOR, &timer_cfg, timer_sensor_event_handler);
    APP_ERROR_CHECK(err_code);

    time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_SENSOR, time_ms);

    nrf_drv_timer_extended_compare(
         &TIMER_SENSOR, NRF_TIMER_CC_CHANNEL0, time_ticks, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true);

[ps_anu]

i didn't get you... can you say me clearly

(you are not using your calculated time_ticks variable for anything).??

[Einar Thorsrud]

In the code you posted you calculate the time_ticks like this:

time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_SENSOR, time_ms);

but you never actually use it. There is no wonder your timer is not running. Please compare with the timer example or the code snippet I pasted in my previous answer where you see the line you are missing (assuming this is what you want to do).

[ps_anu]

how to compare ,actually here i want to check the data  see the code

void timer_sensor_event_handler(void)
{   
uint32_t threshold = 32;
 char str[80];
uint32_t length1;
     char pavi;

 char event;
    
  
    
    switch (event)
    {
             
           
       if(m_sample < threshold)
            {
           length1 = sprintf(str,"%d", m_sample);
              ble_nus_data_send(&m_nus,str,sizeof(m_sample), m_conn_handle);
              ret_code_t err_code = nrf_drv_twi_rx(&m_twi, 0x48U, &m_sample, sizeof(m_sample));
               NRF_LOG_INFO("SUCCESS1");              
             }
  break;

        default:
            //Do nothing.
            break;
  }
}

[Einar Thorsrud]

I do not follow see how this code relates to what we have been discussing earlier in this thread?