unable to use ble_uart using nrf52810

[_bhanu]

Hi,

I'm using app_ble_uart  example using nrf52810 for nrf52810 UART RX &  TX  pins are (P0.15 - P0.14)  while configuring using i got a problem with RX transmission ,when i changed to  Rx pin as p0.15  the nrf52810 module is not working.

[_bhanu]

Einar Thorsrud said:

happens or not.

Einar Thorsrud said:

That is quite high-level, then. Have you tried to debug? What does that tell you? Are any APP_ERROR_CHECK's hit or something else?

 i already tried  so, many times  to debug but i didn't get any data while debugging  

[Einar Thorsrud]

Hi,

I do not see anything obviously problematic in the schematic. 

_bhanu said:

 i already tried  so, many times  to debug but i didn't get any data while debugging  

As long as the device is powered and nothing messes with the SWD lines, you should be able to get something out of the debugger. Can you explain how you debug and what you find (how little it may be)? By explaining (and showing) the issues you have while debugging in more detail, perhaps I can suggest what you can do to get around those problems. I assume you are able to erase and re-program the device? If so, the debug interface is working. Debugging must work in order to develop and test in any meaningful way, and debugging is  only sensible way to move forward.

[_bhanu]

Hi,

i have a question is it required to pullup the  RX pin in Custom board  to work on that

[Einar Thorsrud]

Hi,

You need to ensure that the inputs are not floating. If the UART lines are always connected to another device on the board, and this always drives the input lines to the nRF ( Rx and optionally CTS), then there is no need for pullup(s). If not, you can enable the internal pullup. See this post.

[_bhanu]

Hi,

Hear my UART lines  TX and RX are connected to "QUECTEL" module  when the Quectel module is on  nRF device working fine, when i turned of the Quectel module which is connected to UART  then nRF is also going to turn off automatically.