I'm working on a project using C30 on the 24hj256gp610. I'm trying to use the i2c library. I've got my file to compile with #include , but now the linker is complaining "undefined reference to `OpenI2C1'". Do I need to reference a library file or something in the project file list? THANKS! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist