nRF52 current consumption

[sfujimoto]

hello. Although example consumes less current when connected, in the project I made, consumption is not reduced even if it connects, what is the cause? The service seems to have completed communication normally. However, as far as the current consumption waveform is concerned, it seems that advertising is still continuing. Is there such a thing? Next I will attach the current waveform. It becomes 10 mA / 100 mV.

thanks.

[Stian Røed Hafskjold]

What is the connection interval you are using? If this is a fast connection it might use a lot more than when advertising. It is also possible to advertise while in connection. I depends on what kind of code you are running. Is your code based on one of the SDK examples? If so, it would be helpful to know which one, then I can give you some numbers on the expected current consumption.

Also, it looks like something is consistently using a lot of current in your plot. If nothing else than BLE is running on the chip the current is supposed to drop down to about 2 µA between each BLE event.

Is this custom hardware, or are you using one of the DKs? It looks like something is wrong based on your plot. Can you explain more about the test setup you have? Do you know what the two drops in current in your plot is?

[sfujimoto]

thanks, The reference is ble_app_uart. I transmit 433 bytes per second. 20 bytes is 23 packets. It is custom hardware. However, I refer to PCA 10040. Besides NRF 52832, there are acceleration sensors and others. For other sample projects, the current consumption is reduced when connected. However, since this has not changed at all, I think that it is probable. I do not know the reason for the two valleys. It is also another sample project. However, it disappears when it connects. What is the cause?