feeding on external power supply and USB simultaneously

[fatemeh ghasemi]

I am working with nRF 52832 platform and I soldered SB12 and cut SB10 because I wanted to feed from the external power supply and with this situation I can not connect to the platform and jlink does not appear. if I solder SB10 and cut SB12, I can connect to the platform and run my application but the problem is with this set up I am feeding on external power supply and USB both. Is there any solution that I can connect to my platform without feeding on USB?

[awneil]

fatemeh ghasemi said:

nRF 52832 platform

You mean the Nordic nRF52832-DK ?

Have you looked at the schematics ?

[fatemeh ghasemi]

my platform is pca10036 and I changed according to nRF52_PDK_User_Guide_v1.2.

[awneil]

pca10036 was the nRF52832 preview DK:

https://devzone.nordicsemi.com/f/nordic-q-a/26442/where-to-get-the-sdk-supporting-nrf52832-dk-pca10036/104044#104044

Note the comment there that it is, "not recommended for development. Please get a nRF52-DK (PCA10040)"

Also:

https://devzone.nordicsemi.com/f/nordic-q-a/17431/modify-pca10036-to-pca10040/66971#66971

"strongly recommended to switch to PCA10040"

Anyhow, I would still recommend looking at the schematic - so that you can see exactly what's going on, and work out how to achieve what you require.

[fatemeh ghasemi]

Thank you for sending the links, but now I can use and run nRF5-SDK and it works. I am wondering when I followed the user guides exactly why it doesn't work. maybe there is something that I don't know.

[awneil]

Again, you'd need to look at the schematics to see exactly what's going on.

Anyhow:

fatemeh ghasemi said:

it works

So mark the thread as solved by verifying the answer: