Communication between pca10040 and another device using UART

[lirank]

Hello,

I would like to establish communication between my pca10040 and my cellular modem. Currently I am using ble_app_uart on the peripheral example and I can put messages and get messages via UART manually (opening tera term with pca10040's COM port and sending \ receiving messages via BLE). Is there a way to forward the COM port or UART interface of pca10040 to the COM port of the cellular modem?

Thanks in advance

[endnode]

OK, this looks like a question finally;)

Yes, nRF52 can do bi-directional full-duplex asynchronous UART communication with or without HW flow control and with or without parity at various baud rates up to 1Mbps. It can be assigned to pretty much any of 32 GPIO pins (until they have proper HW layout on the board outside nRF5x chip) by SW, this is standard property of all nRF5x chips. Overall you should definitely read the specification on Infocenter. So yes, anything which is electrically compatible to this specification can be connected to nRF52 and configured in the FW. And that's pretty much all we can suggest until you tell us something more about the counter part (mysterious "cellular modem";)

[lirank]

Thanks! About my modem - I know it is a SIM COM one but I am not sure what model... That is the reason why I did not give any specific details about it.

[endnode]

I can only comment this along the lines "if you don't know what modem you have then you don't know electrical and logical (= protocols) properties of that COM port and that means you can hardly make it work with anything outside (like nRF52)". But that's probably not my business...

[lirank]

Actually I can do almost everything I want it to do ( I know its communication properties, I just don't know its name)