RE: Radio test

Håkon Alseth — Mon, 11 Nov 2019 14:40:14 GMT

[quote user="kevin seo"][/quote]

Thank you for you answer!

I have a one more question.

What is a 'carrier'???

Happy to help.

A "carrier" is the RF output signal in this context.

Kind regards,

Håkon

RE: Radio test

kevin seo — Mon, 11 Nov 2019 14:30:08 GMT

Thank you for you answer!

I have a one more question.

What is a 'carrier'???

RE: Radio test

Håkon Alseth — Mon, 11 Nov 2019 13:31:43 GMT

Hi,

[quote user=""]1) The difference between start_tx_carrier and start_tx_modulated_carrier
Are both start_tx_carrier and start_tx_modulated_carrier sending data continuously?
Start_rx clears the data buffer? Sending start_tx_carreir keeps receiving data from other boards and sending start_tx_modulated_carreir does not accumulate data.
However, when looking at the equipment, sending start_tx_carreir keeps sending data.[/quote]

start_tx_carrier starts a unmodulated carrier; a carrier without any information, which is basically a clean sine wave.

start_tx_modulated_carrier is a modulated signal, which holds data.

Start rx just starts the receiver, on the specified config that you enter. If there is a received signal that matches the address, and so forth; a payload is received. You can only receive a modulated signal.

[quote user=""]2) How do send data when duty is set in start_duty_cycle_modulated_tx? Do keep sending data?[/quote]

The radio is then triggered by a timer, which calculates the length of the packet, and sets the duty cycle based on that. See radio_test.c::radio_modulated_tx_carrier_duty_cycle() for more info.

[quote user=""]3) what is log_mempool?[/quote]

That is the internal memory buffer pool for the logging/CLI interface.

[quote user=""]4) what is cli stats show, cli stats reset?[/quote]

That is related to the CLI module, where it prints info regarding itself (lost logs + max log queue utilization):

uart_cli:~$ cli stats show
Lost logs: 0
Max log queue utilization: 5% [1/20]

Kind regards,

Håkon