Dear Forum,
Im using a NRF52840dk connected to a NRF9160dk with the SLM application running.
Sending uart data from the 52840 to the modem works and modem gives a response. However, then nrf52840 doesnt read this respons and the receive buffer stays empty.
When connecting to my pc, and using a serial monitor(termite), the nrf52840 DOES read the message. I used my logic analyzer and found that the only difference was that my pc sent inverted logic compared to the modem.
The pictures above are the three situations.
The first picture is data sent from the nrf9160, the nrf52840 does NOT read this.
The second picture is the nrf52840 sending data. The nrf9160 DOES read this.
The third picture is the pc(termite) sending data. the nrf52840 DOES read this.
I really dont know what the problem is.
Thanks in advance
