Version 3.1 (and earlier) had a number of issues related to the pin numbering for the I2C function and the counting pins (11 to 14) when used for frequency/period/counting.
These have been fixed in ver 3.2 but the fix required a rearrangement of the I/O pin allocations for the UBW32.
Compared to earlier versions the changes made in 3.2 are:
- Pin 11 will move to E8
- Pin 12 will move to A15 and this pin is also SDA for the I2C function
- Pin 13 will move to A14 and this pin is also SCL for the I2C function
- Pin 14 will move to E9
- Pin 31 will move to D10
- Pin 32 will move to D9
- Pin 37 will move to D11
- The card enable signal for the SD card (SC_CS) will move to D8
I2C will then work with SDA on pin 12 (A15) and SCL on pin 13 (A14).
Pins 11 (E8), 12 (A15), 13 (A14) and 14 (E9) will then work correctly as frequency/counting inputs.
My apologies for any inconvenience that this may cause.