Can software I2C replace hardware channel?
Posted: 14 February 2014, 9:33 AM
I made an error in pin assignments of the second hardware I2C channel on a -24u, reversing SDA (should be pin 25) and SCL (17). I'll cut-and-jumper the board but, meanwhile, I tried opening the channel with explicit, reversed, pin selections. I expected that would open I2C channel 1 as a software channel and correct the reversal:
That didn't appear to work. Should it? Or would I need to use channel 2-4?
Code: Select all
Public Sub Open_I2C(byval I2C_Channel as byte)
if I2C_Channel = 0 then
Call OpenI2C(0, 0, 0, 11) ' open hardware I2C channel 0
else
Call OpenI2C(1, 17, 25, 59) ' open soft I2C channel 1, pins reversed
end if
End Sub