I want to develop C# program to get product rssi value on specific channel by using nRF52840 dongle pca10059

[Benny_Lin]

I 'm developing a program (C# ) on PC for the nRF52840 dongle (pca10059) that is a RSSI scanner.

Scanning different BLE channels in the environment. The program is much like the nRF connects "RSSI viewer".

Finally,the goal of program is to scan for RSSI values while not connecting to any device, just scan a specific channel.

Here, What approach should I manually get rssi value from nRF52840 dongle (pca10059)?

Thanks!

 

Benny_Lin

[Jørgen Holmefjord]

Hi,

We do not have any application examples implemented in C#, but the source code for the nRF Connect RSSI application (written in Node.js) is available on GitHub.

The firmware running on the boards are also available in source code, and can be built for the nRF52840 Dongle. The RSSI application communicates with the dongle over USB CDC ACM, so it should be possible to integrate the required functionality in your C# application.

Best regards,
Jørgen

[Jørgen Holmefjord]

Benny_Lin said:

The main.c is the RSSI viewer source code?

No, main.c is the source code of the firmware running on the Dongle. The RSSI viewer application source code is found in https://github.com/NordicSemiconductor/pc-nrfconnect-rssi/tree/master/src.

Benny_Lin said:

I study and follow main.c . I manually use putty tool connect to Dongle via usb and send "start" 

the response is 

I'm not sure what format you are reading in Putty, but is I'm not sure it is converted correctly in the txt file.

The packets from the RSSI firmware is 3 uint8_t bytes, starting with 0xFF, then the channel number, and finally the RSSI value:

[Benny_Lin]

Hi Jørgen

My Result SCANLOG.txt from below 

My DUT is nRF52840 pca10059 dongle

1. open nRF Connect and select RSSI Viewer

2. Download firmware RSSI Viewer by using DFU

3. Open Putty Tool and Set Serial 

4. From Screen , Key "start",then display response

5.Save response to txt and name to SCANLOG.txt

Here,

Could you help to show your operate procedure?

Thanks!

[Jørgen Holmefjord]

Hi,

I'm using a similar approach to you, but I used RealTerm instead of PuTTY. Here you can set the "Display as" to uint8, so it is easier to read the actual values being transmitted. PuTTY will show the received data value as ASCII characters, which may not make sense when the data is binary.

You can send the "start" command from "Send" tab. Enter the command in the textboc, check the "+RC" checkbox under EOL, and click the "Send ASCII" button.

Best regards,
Jørgen