nrf9160 transmit buffer over uart

[MosheSmartAmr]

Hi Guys, 

I was able to connect a second uart to the evaluation board and receive over uart.

however I didnt find an example of how transmit a buffer over uart. 

is there such an example ? 

I did see some example in this post: 

https://devzone.nordicsemi.com/f/nordic-q-a/44788/nrf9160-dk-send-receive-data-from-uart1

however, I didnt understand what are those fifo's , and if I should initialize them ? 

Thanks,

Moshe

[Hakon]

Hello, have you looked at this example?

[MosheSmartAmr]

I have,

this example is only RX. 

[Hakon]

I'm not sure if there is any example that shows explicit use of uart transmission. Have you tried just using uart_fifo_fill()?

 

however, I didnt understand what are those fifo's , and if I should initialize them ? 

 https://en.wikipedia.org/wiki/FIFO_(computing_and_electronics)

In short, a FIFO is just a data buffer where data is read and written in a certain order. I don't think you need to initialize it, I believe it's handled by the kernel when the drivers are initialized.

[MosheSmartAmr]

I get fifo_uart_tx_data undeclared error on it.

Am I missing something?

[Hakon]

What does your .conf file look like?