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I am using PIC 18F87k90. Is it possible to do serial I2C communication with other than SDA and SCL pins. Can I use PGD and PGC pins ?
I think the controller doesn’t have any option to change the SCL, SDA lines to PGD, PGC. So only option remaining is to use Software I2C.
- In your code you can program PGD, PGC lines as GPIO.
- You need to make SCL, SDA lines as Inputs (High Impedance state) when you need to drive it HIGH.
- You need to make SCL, SDA lines are Output LOW, when you need to drive it LOW.
- Basically you need to write entire I2C HIGH LOW signals using GPIO registers.
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