Data through UART has string

[LINO89]

I am trying to send a string from the board through uart to the PC(windows) through usb-ttl. I tried using adruino and was able to successfully execute it. but when i tried with nrf it is not recognizing the input. I think the issue is with the data type. How can I send the data as a string from board to uart.

char tx_data[] = {'1'};

app_uart_put(tx_data[0]');

tried this but am not getting any response

[awneil]

LINO89 said:

it is not recognizing the input

What is "it" ?

LINO89 said:

char tx_data[] = {'1'};

That's not how you define a string in 'C' !

The single & double quotes have quite different meanings in 'C' !

See your 'C' textbook.

LINO89 said:

app_uart_put(tx_data[0]');

That's not valid 'C' at all:  there is a spurious single quote there - so that wouldn't even compile.

LINO89 said:

am not getting any response

What do you mean by that?

What are you expecting to "respond" ?

I suggest you start with the SDK UART example:

infocenter.nordicsemi.com/.../uart_example.html

[LINO89]

int Loop = 1;

void setup(){
Serial.begin(115200);
}

void loop(){
Serial.println(Loop);
delay(5);
}

this id the adruino code I wrote to send "1" as a input to the usb of my windows machine. I got recognized properly. But i case of nordic I am not able to generate that. I am a newbie to embedded C. I am referring UART example 

[awneil]

Again:

LINO89 said:

I am a newbie to embedded C

Then I would strongly suggest that you spend some time to get familiar with 'C' on a PC - before you add all the complications of embedded microcontrollers & the Nordic SDK, etc.

There is really nothing special about "embedded" 'C'

Here are some 'C' learning & reference materials:

http://blog.antronics.co.uk/2011/08/08/so-youre-thinking-of-starting-with-c/

LINO89 said:

I am referring UART example

You mean this SDK example:

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/uart_example.html

LINO89 said:

the board

What board are you using?

[LINO89]

Yes, I am using nrf52840

[awneil]

That's a chip.

I asked what board you are using?

Also please confirm precisely which example you are using.