initialise_AD_converter

=initialiseADConverter= Owner: Michelle

Purpose and Documentation
This is part of the setup routine, which will enable the AD converstion.

Syntax
void initialise_AD_Converter

Usage
This function should be called from the setup function during the initialisation of the program.

Input Arguments

 * void. This function takes no arguments.

Output Arguments

 * None. This function does not make changes to any existing values.

Return Value

 * void.

Read

 * None

Write

 * ADCON0
 * ADCON1
 * T0CON
 * INTCONbits.TMR0IF

Operation
Enable A/D, synchronise to clock. Use all of ADRESL and part of ADRESH to store result, use board voltage references (**needs to be changed**). Enable T0.

Code
code format="c" /** * Intitialises the A/D converter, and waits until the A/D converter has finished enabling. * Postcondition: The A/D converter is enabled. */ void initialiseADConverter {   ADCON0 = 0b01000001; //Fosc/8, A/D enabled ADCON1 = 0b10001110; //Right justify, 1 analog channel; VDD and VSS references T0CON = 0b11000111; //TMR0 prescaler, 1:256 while(INTCONbits.TMR0IF == 0); INTCONbits.TMR0IF = 0; }

code