PIC 16F684 and the A/D setup problems

[theproff]

I have recently purchased the CCS compiler, but am having problems getting the A/D woking, the only result i get from the following setup is 0x3ff. i am using the latest compiler version 3.245

i have tried the examples in the user guide, and on the CCS web site to no avail as these get errors when compiled.

my system

PIC 16F684

AN0 = battery voltage resistor divider max voltage = 1.1volts = 4.5 battery voltage.

AN1 = VREF, using Zetex 1.22voltage reference chip
RC5 = VREF_ENABLE, this applies battery voltage to the VREF chip

my code

#device PIC16F684 ADC=10

setup_adc_ports(sAN0 | VSS_VREF) ;
setup_adc(ADC_CLOCK_INTERNAL) ;
set_adc_channel(sAN0) ;

OUTPUT_HIGH(VREF_EN) ; //enable vcc to vref chip via 1k resistor
delay_ms(2) ; //wait for voltages to stabilise

uiBatteryVoltage = read_adc() ;


voltage on AN0 pin is 0.6 volts (battery)
voltage on AN1 pin is 1.22volts (vref chip)

adc result (uiBatteryVoltage) will always be 0x3ff, should really be half this value...

SFR's are:

TRISA = 0x3f
ADCON0 = 0xc5
ADCON1 = 0x30
ANSEL = 0x01

ADRESL = 0xff
ADRESH = 0x03


i don't think i have missed anything out, any help with this would be appreciated.

thanks
theproff

[PCM programmer]

[theproff]

PCM Programmer

Thanks for opening my eyes, how stupid am I