Nrf51822 UART example

RE: Nrf51822 UART example

jjww — Wed, 02 Sep 2015 05:03:50 GMT

sure, thanks

RE: Nrf51822 UART example

Susheel Nuguru — Wed, 02 Sep 2015 04:57:27 GMT

can you please accept this answer if there is nothing else on this case.

RE: Nrf51822 UART example

jjww — Wed, 02 Sep 2015 03:09:31 GMT

Thank you, this should be helpful . .

RE: Nrf51822 UART example

Susheel Nuguru — Tue, 01 Sep 2015 13:06:34 GMT

If you really want to read the RXD

Click View->Memory Windows->Memory 1
put the value of RXD register address there (0x40002518)

but debugging wont help this way because as soon as the memory window has showed you that RXD is being read, it will empty internal fifo and that byte is lost and not available for your application.

RE: Nrf51822 UART example

jjww — Tue, 01 Sep 2015 12:47:40 GMT

Hi Aryan thank you, this makes debugging difficult, seems MSP430 under eclipse can see UART register both RX and TX

I am trying to figure out UART using official example code, \Board\nrf6310\uart_example after print Start: information: My code is stuck at waiting RXD events, ....

RE: Nrf51822 UART example

Susheel Nuguru — Tue, 01 Sep 2015 09:46:24 GMT

I just talked to engineer who releases this file. I have old SVD with me, The RXD is not supposed to be shown, because if it is shown, then the debugger will try to read the register to display, and if it is read by anything (debugger or CPU) then the byte is poped out of the buffer and it is not available for the application. So this is intentional in latest MDK.

RE: Nrf51822 UART example

jjww — Tue, 01 Sep 2015 09:02:17 GMT

I replaced the SVD file with from the one in your link, however , the RXD register is not shown. Maybe some where else goes wrong?

RE: Nrf51822 UART example

Susheel Nuguru — Tue, 01 Sep 2015 07:48:20 GMT

This is not a good way but you can try. try copying nrf51.xml to Keil_v5\ARM\Device\Nordic\nRF51822\SVD (if you have 51822)

or copy this nrf51.xml to Keil_v5\ARM\Device\Nordic\nRF51422\SVD (if you have 51422)

RE: Nrf51822 UART example

Susheel Nuguru — Tue, 01 Sep 2015 05:54:53 GMT

which version of MDK did you install? I will have to look into its SVD file

RE: Nrf51822 UART example

jjww — Tue, 01 Sep 2015 01:06:31 GMT

Hi I tried re-install CMSIS and MDK, it still shows so.

RE: Nrf51822 UART example

Susheel Nuguru — Mon, 31 Aug 2015 08:36:04 GMT

most probably the svd file got corrupted. Try to uninstall and re-install the nrf-51MDK and please let us know if that worked.