Configuration bits and timing

[HenrikOlsson]

Hi,
Open up the datasheet and take a look at the ADC section - especially the ANCON register. It says:

The ANCONx registers are used to configure the operation of the I/O pin associated with each analog channel. Clearing an ANSELx bit configures the corresponding pin (ANx) to operate as a digital only I/O.

Cool device that, 12bit ADC with differential input, two internal references - hadn't noticed it before.

/Henrik.

[RayL113]

I've tried;
ANSEL = $00
ANSEL = 0
ANSEL0 = 0
and get "ERROR Line 30: Syntax error.30: Syntax error 30: Syntax error"
Any suggestions on the correct way to enter this setting in this new chip?

[RayL113]

I didn't see ANSEL in the p18f26k80.h file.
So I tried the following using the ANCON configuration registers and it seems to work;

ADCON0 = %00000000 ;P364 A/D CONTROL REGISTER 0
ADCON1 = %00000000 ;P365 A/D CONTROL REGISTER 1
ADCON2 = %00000000 ;P366 A/D CONTROL REGISTER 2
ODCON = %00000000 ;P179 PERIPHERAL OPEN-DRAIN CONTROL REGISTER
ANCON0 = %00000000 ;P369 A/D PORT CONFIGURATION REGISTER 0***
ANCON1 = %00000000 ;P369 A/D PORT CONFIGURATION REGISTER 1***
CM1CON = %00000000 ;P378 COMPARATOR CONTROL x REGISTER
CM2CON = %00000000 ;P378 COMPARATOR CONTROL x REGISTER

Thanks for pointing me in the right direction.

[HenrikOlsson]

That's because there is no ANSEL register in the 26K80. The register is called ANCONx.

/Henrik.