libuarte doesn't send any data

[Stavros Makridis]

Hello,

I used the examples\peripheral\libuarte example to implement a driver for NBIoT DCE. I embedded the sample in my project and started debugging. Although the transmitter event is being triggered I don't get any data at the terminal application (TerraTerm VT) connected to the uart of my device. I have checked that I am using the right pins for RX and TX signals, baudrate, data length, parity, flow control and there are no errors at run time. The firmware reported that sent 36 bytes in one chunk of 36 bytes (the initial starting message, "UART example started.\r\n Loopback:\r\n") but no data coming in to terminal.

I have to tell you that initially I used the uarte sample. It was working properly on both directions but at some time due to specifications I have to implement a continuous reception so I switched to libuarte instead.

Any suggestions? Any points of further check?

Best regards,

Stavros Makridis.

[Hung Bui]

Hi Stavros, 

Have you received NRF_LIBUARTE_ASYNC_EVT_TX_DONE event ? 

Have you tried the libuarte example without any modification ? Do you receive any data ? If you don't receive any data in this example, could you try again with other simple UART just to be sure UART works between your board and the computer.