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mole42uk · 14th Feb 2021, 5:17 pm

Hurrah!
Thanks for all your help, everyone. I've finally achieved two things:

1. I've learned a lot about RS-232 today and how easy it is to understand.

2. I've got the correct output from my GPS receiver. Going back to RTFM, I discovered that the outoput can either talk NMEA-0183 or some other message protocol that isn't defined. Of course, to ensure the receiver starts up in NMEA, a pin has to be held low at start-up.

Now I may start to check that the system is working properly!

Thank you again,

14th Feb 2021, 5:17 pm	#17
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,608	Re: Help with RS232 needed! Hurrah! Thanks for all your help, everyone. I've finally achieved two things: 1. I've learned a lot about RS-232 today and how easy it is to understand. 2. I've got the correct output from my GPS receiver. Going back to RTFM, I discovered that the outoput can either talk NMEA-0183 or some other message protocol that isn't defined. Of course, to ensure the receiver starts up in NMEA, a pin has to be held low at start-up. Now I may start to check that the system is working properly! Thank you again, __________________ Richard Index: recursive loop: see recursive loop