RE: UDP STACK-- DATA PAYLOAD OF NMEA SENTENCE---EK-TM4C1294XL KIT--- SERIAL TO ETHERNET CONVERSION.

shabaz — Sun, 27 Nov 2022 04:06:17 GMT

Not that it matters after so many years, but because it's interesting to spot bugs, and since you've posted it:

There's a bit of a bug in the solution. You're sending 18 bytes:

However, the UDP packets contain 20 bytes:

The problem is, the stream has no delimiter, perhaps you're using CR/LF to do that, but that's no good if the serial stream carried anything other than NMEA.

There's actually standards to do what you're doing, dating back to serial modern days. Something like SLIP would do it (easy for a microcontroller to decipher that). Plenty of other methods too, that's just one of the simplest, and would solve that problem.