Frequency trasmission and current

[Angelo Cotroneo]

Hi,

during the test of the trasmission, in my phone I have seen the figure below:

As you can see the trasmission is every 2 seconds and I want to change this time trasmission. I am using the code situated in the folder "\nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_uart_adc_scan_mode". I have modify the ADC_SAMPLE_RATE but only with the 1000 and 2000 values seems it works. What parameter do I need to change to increase or decrease the frequency trasmission (i.e. every 4 seconds, 8 seconds, 10 seconds, and so on)?

In the following picture there is the current consumption during the trasmission (is about 0.6mA)

Is it possible to reduce the current consumption? What kind of parameter in the code can I change?

Thanks a lot and best regards

Angelo

[haakonsh]

You need to increase the BLE Connection Interval. See sd_ble_gap_conn_param_update and relevant Peripheral Connection Parameter Update Message Sequence Chart.

[Angelo Cotroneo]

Hi haakonsh,

so you can suggest to modify the following string

"#define FIRST_CONN_PARAMS_UPDATE_DELAY  APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER)"?

Thanks a lot and best regards

Angelo

[haakonsh]

That line sets the timeout for when, after a connection has been established, a connection parameter update request is automatically initiated by the application. The number 5000 is in units of 1ms == 5 seconds.

[Angelo Cotroneo]

Hi,

thank you for your reply. But what parameter do I need to change? Can you help me?

thanks a lot 

[haakonsh]

 There's probably some defines in sdk_config.h concerning the default preferred connection parameters.