Connecting Old nokia 3310 to NRF52

[Usman Rashid]

Hi,

I want to connect old nokia 3310 to NRF52 DK.

Please let me know if any one has information about it?

Based on my research old nokia phone uses M bus and F bus communication protocol so then how is it possible to connect it to the UART of DK ?82016621-Nokia-F-bus-M-bus.pdf

[Wojtek]

I don't think that is nRF5x specific question... You got the protocol description? Not sure about mbus, but f-bus seems to be like uart (dunno about voltage levels...). So, just use uart driver?

[Usman Rashid]

I have attached the description now with the above main question. Confused that how can I connect NR52 TO nokia 3310

[Wojtek]

what are the voltage levels expected?

[Usman Rashid]

From the phone I will get 3.2 volts. I have to remove MAX232 which is the voltage converter and covert 3.2 to 12 volt.