scanf does not work

[Rajneesh]

Hello,

I have include stdio.h library file and configure uart . Used printf to print data over uart to terminal. Now I wants same thing reverse get data(scanf) from terminal (via uart). But I am failing to get data.

Can any one help me how can I get data from terminal(via uart) ?

Regards, Rajneesh

[Øyvind Karlsen]

Hi,

I'm not sure that I understand your question.

There's no scanf() in the code, characters either come over the UART or they come over the connection from the app/ other device.

The data from UART is read by the function app_uart_get(&data_array[index]) in the uart_event_handle().

Best regards,

Øyvind

[Rajneesh]

Thanks Øyvind,

I agree with you there are no scanf code.

I have used app_uart_get(data_array[index]) in the uart_event_handle. Its work well. Its work on interrupt and every interrupt its fill uart fifo.

Actually I wants to wait till user does not enter any data on uart(terminal) same functionality of scanf() function call.

Any other way to get data from uart(enter from terminal)?

regards, Rajneesh

[Øyvind Karlsen]

Well, you can set up the receiver so that it the receiver triggers on newlines for example. And also have the transmitter send a newline at the end of each command, for example when enter is pressed.

[Rajneesh]

Thanks,

Can you give me some reference how to set receiver?

[Øyvind Karlsen]

Hi,

Just search the input for "\n"using any standard c function, for example find().