nRF51 DK Virtual Uart

RE: nRF51 DK Virtual Uart

Susheel Nuguru — Fri, 10 Apr 2015 07:14:38 GMT

sorry, it was a typo, changed NOT -> NOW

RE: nRF51 DK Virtual Uart

Milan — Fri, 10 Apr 2015 05:09:46 GMT

Hi Aryan,

I think step 2 needs to be corrected.

2) plug in your device PCA100028, it should not be available in your PC as a COMXX device.

What I did,

connected the board to PC. At this time in Device Manager there was no virtual com port.
I have opened J-Link commander and given command "vcom enable". Reset the board and in device manager new com port popped up.
I opened the PUTTY on that new com port popped in step 2
then I have flashed the board with the desired program and it worked fine.

RE: nRF51 DK Virtual Uart

Susheel Nuguru — Fri, 10 Apr 2015 04:55:14 GMT

I updated my answer with it. See if you accept the points.

RE: nRF51 DK Virtual Uart

Milan — Fri, 10 Apr 2015 03:39:04 GMT

yup.. working after commenting below line..

#define ENABLE_LOOPBACK_TEST

Thanks Aryan!! :)

RE: nRF51 DK Virtual Uart

Susheel Nuguru — Thu, 09 Apr 2015 17:58:19 GMT

i am using another computer so cant remember if the test you mentioned was a loopback test check if the below answer helps you

devzone.nordicsemi.com/.../

I will check later if it is indeed loopback test, then you need to connect TX and RX pins

RE: nRF51 DK Virtual Uart

Milan — Thu, 09 Apr 2015 14:05:43 GMT

what i did

removed all wired connection to PC
as I connect board, in device manager, jLink CDC UART port COMX appears
opened PUTTY and configured it
i flash uart_pca100028

still not working. nothing printed on PUTTY. any suggestion?

RE: nRF51 DK Virtual Uart

Susheel Nuguru — Thu, 09 Apr 2015 13:12:13 GMT

Hi playerM,

The UART pins are internally connected to the Segger chip and it will be available on you PC as normal COM port. For this you DO NOT HAVE TO connect TX,RX,RTS and CTS to PC.

Steps,

remove all wired connections to PC with TX, RX, GND etc related to serial port.
plug in your device PCA100028, it should now be available in your PC as a COMXX device.
(added) comment the line #define ENABLE_LOOPBACK_TEST if you do not want loopback test on uart. If you want to test loopback then you need to connect TX and TX pins on the board.
Flash your program uart_pca100028
Open PUTTY (or any other serial emulator) and connect it to the new COM port.
select baudrate 38400 and your example should work fine.