Set 2 bits values

[Jan Lichtenbelt]

I want to set the 2bit parameter CDAFVR<1:0> of the register FVRCON. Is it possible sometime like:
fvrcon.CDAFVR=....

With kind regards

Jan Lichtenbelt

[Benj]

Hi Jan,

In XC8 you can do things like this.

FVRCONbits.CDAFVR = 3;

However in BoostC things are a little different.

I think the register bits are only defined as their bit position so you can do things like this.

set_bit(fvrcon, CDAVR0);
clear_bit(fvrcon, CDAVR1);

Not really what you were after but not too bad.

[Jan Lichtenbelt]

I get a C-code error "Left operand must be l-value". What can be wrong?

test_comparator.fcfx

(15.26 KiB) Downloaded 671 times

Kind regards

Jan Lichtenbelt

[medelec35]

Hi Jan
You have got:

Code: Select all

TRISA=TRISA|0x04;   // Set A2 as input
ANSELA= ANSELA | 0x04; // Set A2 as analog input

For boost C it should be:

Code: Select all

trisa=trisa|0x04;   // Set A2 as input
ansela= ansela | 0x04; // Set A2 as analog input

Registers are in lower case and bit names are in upper case.

Martin