Hi All,
We are trying to interface nRF52840 based custom board, manufactured using Config 6 schematic as the reference, with R-Pi to work as NCP. Please refer to the attached schematic .
We found that the RPi was not able to communicate with the custom board, so when we tried to trace UART signal between R-Pi and our custom board as well as nRF-DK (nRF52840-DK 1.0.0), we found following results:
|
S. No. |
Test |
Result with nRF-DK |
Debug mode Result with nRF-DK |
Result with Custom board |
Debug mode Result with Custom board |
|
1 |
R-Pi Thread NCP Connectivity. |
NCP Connected |
Device Running. |
NCP Not-Connected |
Device Running. |
|
2 |
UART TX Trace On J-Tag Reset without R-Pi connection. |
Hex data : 7E 80 06 00 72 FC 57 7E |
Device Running. |
No data |
Device Running. |
|
3 |
UART TX Trace On Switch Reset without R-Pi connection. |
Hex data : 7E 80 06 00 71 67 65 7E |
Device Running. |
No data |
Device Running. |
|
4 |
UART TX Trace On Power-Reset without R-Pi connection. |
Hex data : 7E 80 06 00 70 EE 74 7E |
Device Running. |
Hex data : 7E 80 06 00 70 EE 74 7E |
Device Running. |
Note: --
1) NCP firmware PATH: SDK_DIR\examples\thread\ncp\ftd\uart\pca10056\blank\ses
2) To verify if UART TX and RX is working, we used: SDK_DIR\examples\peripheral\uart\pca10056\blank\ses, and were able to verify that UART communication was working fine.
3) UART TX and RX is checked on PIN P0.06 and P0.08 respectively of nRF-DK and custom board.
please suggest
Thank you
PNordic_nRF52840.pdfavan S K