Multiplexer channel selection

[Acetronics2]

Guess what? Free help! Deal with it.

'dcd channel selection
low g_dcd

for i=0 to 15
	portb = (portb & %00011111 ) | ( ( i rev  3 ) << 5 )
	portc = (portc & %10111111 ) | ( i << 3 )
next i

OR don't ADD

to get rid of the i lower bits for portC ...

i would have used

portc = (portc & %10111111 ) | ( i.3 << 6 )

but, it's me ...

Alain

[skimask]

portc = (portc & %10111111 ) | ( i.3 << 6 )[/code]

I've tried to do something like that before. If I remember right, the fact that i.3 is a bit didn't work well with the << 6. It ended up shifting itself out into nowhere and always ended up being a '0'.
Maybe that was back in the day, in an older version of PBP or something. It just seems to me like that didn't work very well.

[Acetronics2]

Hi,

I did at test on the breadboard this morning ...

Everything fine ...

Alain

[Castor]

This is the winner:

portb = (portb & %00011111 ) | ( ( i rev  3 ) << 5 )
	portc = (portc & %10111111 ) | ( i.3 << 6 )

I've tried both in MPLAB SIM but

	portc = (portc & %10111111 ) | ( i << 3 )

doesn't mask the port right.

THANK YOU. Problem solved

[Acetronics2]

Good news !

Just for the fun ...

How many boards saved ???

Alain

[Castor]

uhm .. one

I'll post the code in the apropriate section when it's done. It's for a Li-Ion Battery Management System (BMS)/Balancer

[Acetronics2]

Hi, Castor

What is your device for ??? Modelling purposes ?

By the way, I realized a voltage warning device for transmitters ( for a Nicad to LiPo conversion ), some times ago, and, by the way noticed there's a not negligible tempco with those batts ...

doesn't simplify the measurements !!!

Regards from ... an ex Tegel " blue uniform " temporary citizen.

Alain

[Castor]

it's for an electric golf cart I'm building