#pragma config WDTEN = OFF // Watchdog Timer Enable bits (Watch dog timer is always disabled. #pragma config BOREN = OFF // Brown-out Reset Enable bits (Brown-out Reset disabled in hardware and software)

#pragma config PWRTEN = ON // Power-up Timer Enable bit (Power up timer enabled) #pragma config IESO = OFF // Internal/External Oscillator Switchover bit (Oscillator Switchover mode disabled) #pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor disabled) #pragma config PRICLKEN = ON // Primary clock enable bit (Primary clock is always enabled) #pragma config PLLCFG = OFF // 4X PLL Enable (Oscillator used directly) #pragma config FOSC = INTIO67 // Oscillator Selection bits (Internal oscillator clock) Use project enums instead of #define for ON and OFF. #pragma config statements should precede project file includes. PIC18F45K22 Configuration Bit Settings I don't understand why the compiler seems to be getting it wrong.Ĭan anybody help with this please? #include I'm not referencing the underscore prefixed versions of these anywhere, which makes me think the compiler's doing it. WriteI2C1, ReadI2C1 and OpenI2C1 are all defined in i2c.h. I am making calls to those functions - see code below - and have correctly included plib.h, which in turn includes i2c.h. I don't understand why this is happening. I'm not new to coding, but am new to PIC coding. I am getting the error:Īpparently relating to _WriteI2C1, _ReadI2C1 and _OpenI2C1 at the production.obj stage of project build. I am trying to compile a simple I2C program for a PIC18F45K22 using MPLab XC8 compiler.

How to start using mplab xc8