Power Profiling Application for 3rd-party evaluation board

RE: Power Profiling Application for 3rd-party evaluation board

Ken — Wed, 23 Mar 2016 04:42:50 GMT

Hi Stefan Sorry, I thought finished, but I have one more question. I want to measure the current consumption without 32KHz Crystal. In main.c, ble_stack_init(), I changed from SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL); to SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION, false); Is above change correct to run without 32KHz crystal for this application ?

RE: Power Profiling Application for 3rd-party evaluation board

Stefan Birnir Sverrisson — Tue, 22 Mar 2016 14:16:38 GMT

Yes, that should be fine.

RE: Power Profiling Application for 3rd-party evaluation board

Ken — Tue, 22 Mar 2016 01:50:33 GMT

Hi Stefan

Thank you very much for your answer.

In system_nrf51.c, I put #include "nrf_soc.h" and in SystemInit() I put sd_power_dcdc_mode_set( NRF_POWER_DCDC_ENABLE ) ; Are these correct ?

Best regards, Ken

RE: Power Profiling Application for 3rd-party evaluation board

Stefan Birnir Sverrisson — Mon, 21 Mar 2016 14:41:43 GMT

Hi Ken

The default TX power setting is 0dBm, but that can be easily modified with calling the sd_ble_gap_tx_power_set
By default, the DCDC converter is not enabled. You need to enable the dcdc manually, as this thread describes.
When advertising, all three advertising channels are used. How that works is described in this video at [13:36]. Another useful BLE video is here.
The APP_CFG_CONNECTION_INTERVAL is the connection interval. To set the connectable advertising interval change the CONNECTABLE_ADV_INTERVAL constant. Similarly, to change the non connectable advertising interval change the NON_CONNECTABLE_ADV_INTERVAL constant.

RE: Power Profiling Application for 3rd-party evaluation board

Ken — Thu, 17 Mar 2016 23:31:25 GMT

Dear Stefan

Thank you very much for your reply.

SDK I am using is "nRF51_SDK_10.0.0_dc26b5e".

About nRF51 chip marking: There is shield case on the chip, so I can not see the chip marking. However, the evaluation board manual said nRF51822 Rev.3.

Sorry, I wrote wrong value for changing button. For changing of non-connectable mode button, I wrote "In main.c #define NON_CONN_ADV_BUTTON_ID 2 to 3". Correction is "In main.c #define NON_CONN_ADV_BUTTON_ID 1 to 2"

Best regards, Ken

RE: Power Profiling Application for 3rd-party evaluation board

Stefan Birnir Sverrisson — Thu, 17 Mar 2016 16:35:14 GMT

Hi Ken

What SDK version are you using?
On your evaluation board, what do the chip markings say on the nRF51 chip?