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Extremely high current consumption during advertising - broadcast mode(ble_app_temp)

I have written application similar to ble_app_temp (posted by Ole Morten) and during the test I noticed that current consumption is extremly high. I used brand new coin battery that was included in evaluation kit and after ~10 minutes battery status was only 40% ( I checked this also with ble_app_hrs app). At the beginning I though that it was caused by the data included in advertisment packet ( I added 10 bytes of data to manufacturer data - adv interval was 1 second), but then I tested my battery with original app (ble_app_temp) and the effect was the same. My question is: did anyone also encountered such a problem with high current consumpion in case of broadcaster mode? I will test different battery today but I am afraid that is not case of battery.

Thanks in advance for your help.

ble_app_temp.zip

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  • I have followed most of your comments (except cutting Uart lines). What's more, 38mA that I mentioned is measured based on voltage drop in the moment of radio transmition (so it really doesn't matter if there is some other constant current consumption, I am just measuring the voltage difference (from peak to constant consumption). I have also checked current consumption during transmition in case of ble_app_proximity and it looked similar - the peak to peak voltage was almost the same. I will be back from delegation on Friday and then I will perform more accurate tests, and of course share informations with you:)

    Best regards, Rafał

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  • I have followed most of your comments (except cutting Uart lines). What's more, 38mA that I mentioned is measured based on voltage drop in the moment of radio transmition (so it really doesn't matter if there is some other constant current consumption, I am just measuring the voltage difference (from peak to constant consumption). I have also checked current consumption during transmition in case of ble_app_proximity and it looked similar - the peak to peak voltage was almost the same. I will be back from delegation on Friday and then I will perform more accurate tests, and of course share informations with you:)

    Best regards, Rafał

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