If you find program memory const pointers are not working check the compiler memory model is set to large > 64KB if you are using a PIC18 with >64KB of program memory. If not when accessing constants that are at addresses > 0xffff you’ll access the lower memory equivalent.

USEFUL?
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.