Active mode Tx Current and Active mode Rx Current(nrf52840)

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Kenneth — Tue, 16 Nov 2021 08:08:18 GMT

If you are using power profiler hardware you should be able to measure the actual current consumption of the radio packet, for instance our PPK2 can do this: https://www.nordicsemi.com/Products/Development-hardware/Power-Profiler-Kit-2

I am not sure what you mean by sending data continously, all data packets are typically short in time, they consist of an address, a payload and crc. You can send it frequently, but not continously. The closes we may have to send something continously would be the start_tx_carrier mode, this will start a unmodulated carrier on a specific frequency.

Kenneth

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Santhosh_123 — Tue, 16 Nov 2021 06:35:25 GMT

Hi Kenneth,

Yeah we tried this but in this how to send the data continuously data from tx to rx can you help me regrading this why because we doing manual in this radio test by using putty

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Kenneth — Mon, 15 Nov 2021 17:06:59 GMT

Maybe try: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/nrf_radio_test_example.html

Kenneth

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Santhosh_123 — Mon, 15 Nov 2021 05:40:04 GMT

Hi Kenneth

Thank you so much for the reply,can you share any example code for this to check the radio TX and RX

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Kenneth — Wed, 10 Nov 2021 10:50:40 GMT

I guess you are referring to the TX and RX "only" currents, these currents do not for instance include HFXO, regulators and easydma. There is no direct way to measure these, I suggest that you measure for instance system on chip current first without the radio, and then while using the radio, then the difference should only be the current from TX and RX as described while using the radio:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html#unique_2122892465
https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html#unique_462854154

Honestly speaking I think it may be easier to look at the system on chip currents listed here:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/_tmp/nrf52840/autodita/CURRENT/parameters.i_radio.html

Alternatively measure while advertising or connection you are close to the numbers shown here:
https://devzone.nordicsemi.com/power/w/opp/2/online-power-profiler-for-bluetooth-le

Hope that helps,
Kenneth

RE: Active mode Tx Current and Active mode Rx Current(nrf52840)

Santhosh_123 — Wed, 10 Nov 2021 05:55:25 GMT

can any one please reply for this