Examples related to RF test
- Test RF Frequency
Hardware peripheral examples – > Radio Test Example - https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/peripheral/radio_test/README.html
- Bluetooth low energy examples -> BLE Central & Peripheral -> ATT_MTU Throughput Example
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Fble_sdk_app_att_mtu.html&cp=7_5_0_4_2_1_0 - Direct Test Mode (DTM)
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Fble_sdk_app_att_mtu.html&cp=7_5_0_4_2_1_0
Radio Test Example
Setup Spectrum Analyser Board
Open the software nRF Connect -> RSSI Viewer.
Program one of the board to view the frequency spectrum. When you select the board inside the RSSI Viewer, it will assist you to flash in the RSSI Viewer firmware.
Setup RF Transmitter Board
On another board, load in the firmware for the example
Hardware peripheral examples – > Radio Test Example
This can be found from the SDK directory
F:\…..\nRF5 (SDK)\examples\peripheral\radio_test\hex
Connect this board to a console.
Key in the command “start_tx_carrier“. This will make the board transmit at a frequency. You should notice that frequency (at channel 0) spike up from the RSSI Viewer on the spectrum analyser board. You can change the frequency to transmit using the command “start_channel” followed by again the command “start_tx_carrier“. Example to change transmitting RF at channel 20.
start_channel 20
start_tx_carrierYou can also change the transmit power using the command “output_power” followed again by the command “start_tx_carrier” to start transmitting at the new power set.
The command “cancel” switch off everything.
The command “parameters_print” display the current settings.
Key in the command “start_tx_sweep“. You will see the frequency sweeping from the left (lower frequency) to the right (higher frequency). You can use the command “time_on_channel” to set a sweep delay (from 1ms to 99ms) to make the sweeping slower. You can also control the channel (frequency) range to sweep using the command “start_channel” and “end_channel“.
Issue with Radio Test example
No idea how to send and receive data for the radio test.