TD next - Community

Hello,

I have a GPS which continuously send info on the RX pin.
What is the best way/practice to read from leuart ?
I think i should implement a buffer, then read it when it is full.

Found the declaration in the examples :

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init_printf(TD_UART_Init(9600, true, false), TD_UART_Putc, TD_UART_Start,
         TD_UART_Stop);

Then, I found this on the web :

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 while ((c = TD_UART_GetChar()) >= 0) {
//...
}

But in my case, it will never stop if i use it like this.

Thanks in advance,


Arnaud.

Hi,

This should be fine. Did you declare c as an int?

Loïc

Yes, c is an int.

Ok if it is the good way, i will find how to proceed with buffer. I am a a beginner but i should find

Thanks Loïc.
(I think you are french as me but as we are on an internationnal forum... )

The buffer already exist at the driver level. If you don't get out of the loop then this is probably because you never stop to have data. I guess your GPS keeps sending you some data. You'd better use 11500 speed when your gps is on and go back to 9600 when it is off.

Indeed it sends always data, either if there is no fix.
Good news that a buffer is already in the chip, so, if i understand, i only need to do this to get (always) the content by char.

int c;
char didi;
while (((c = TD_UART_GetChar()) >= 0)) {
didi = (char)c;
};

Thanks