Using the same Subs with Hardware and Software I2C?

[trastikata]

Hi all,

I have two I2C LCD's which unfortunately do not have the option of changing the I2C address. So I connected one to the hardware I2C and the other is using a software I2C - thus one is using HBStart-HBusOut-HBStop and the other BStart-BusOut-BStop.

I have already written the subroutines for displaying the information I need on those LCDs in previous projects using either HBStart-HBusOut-HBStop or BStart-BusOut-BStop.

I know I can simply use I2Cout SDA_Pin, SCL_Pin, Control, { Address }, [ OutputData ] with both LCD's in a software I2C mode, but it would mean rewriting the Subroutines.

So I am thinking about a "simple" way of setting a bit before sending the data and switching between HBStart-HBusOut-HBStop and BStart-BusOut-BStop. Something that sounds and looks like:

If HardwareBit = 0 Then Use BStart-BusOut-BStop : Else Use HBStart-HBusOut-HBStop

Any suggestions are welcome. Ultimately, if not possible, I'll modify my Subroutines using I2Cout SDA_Pin, SCL_Pin, Control, { Address }, [ OutputData ] but for now I'd like to spare myself that extra work if possible.

[tumbleweed]

Another option (if your device supports it) is to use PPS and remap the I2C pins by adding a "SelectPort" subroutine.
That way you could use hardware I2C with both.

[trastikata]

Another option (if your device supports it) is to use PPS and remap the I2C pins by adding a "SelectPort" subroutine.
That way you could use hardware I2C with both.

Good point - this is an option I didn't think of, unfortunately PIC18F46J50 doesn't support I2C remapping.