UARTX_Write_Text limitation

[Dominic75]

Hi,
Does anybody know if there is a maximum character we can send using UARTX_Write_Text function? I can't seem to find any limitation in the documentation.

If I send 255 characters all is good:

Send:

Code: Select all

UART2_Write_Text("1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890ABCDE");

MikroC Uart Terminal:

Code: Select all

1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890ABCDE

If I send 256 (I added the F in the string), the terminal keeps receiving data in loop forever:

Code: Select all

UART2_Write_Text("1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890ABCDEF");

MikroC Uart Terminal:

Code: Select all

12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
01234567890123456789012345678901234567890123456789012345678901234567890ABCDEF123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012
3456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890ABCDEF1234567890123456789012345
67890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234
5678901234567890123456789012345678901234567890ABCDEF1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890ABCDEF12345678901234567890123456789012345678901234567890
12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
012345678901234567890ABCDEF123456789012345678901234567890123456789012345678901234567890123456789

(I formatted the output so its readable - there is no \r\n in the terminal)

I also tried with TeraTerm to see if the problem was not the MikroC terminal. It's not. Both have the same behaviour.

So is UARTX_Write_Text limited to 255 char max?

Thanks
Dominic

(PIC32MX170F256D / Mikroc PRO for PIC32 v.4.0.0)

[filip]

Hi,

Yes, this function is limited to 255 characters.

Regards,
Filip.

[Dominic75]

Hi Filip,
Thanks for the confirmation. Might be an idea to put it in the doc. (Would have saved me an hour and would have saved an unnecessary post )

Dominic