Other Parts Discussed in Thread: BOOSTXL-CAPKEYPAD
Hi There!
I am wanting to use the REGISTSER_I2C interface on the MSP430FR2512IRHL with Captivate Design Center. Previously I had been pulling lines low to signal button events, but I would like to experiment with the register interface.
So three questions:
1. Can I use for the I2C lines any of P2.4, P2.5, or 2.6? If so, how can I do this?
2. If I cannot use those pins, which pins should I be using?
3. Related to my previous approach, when experimenting, I found the following issue:
In my application, I noticed that setting P2.4 to GPIO and outputting 1 and 0 on the lines work as expected. On the scope I get a 0 and a ~3.3V signal. However, with P2.6, I get 3.3 and ~ 1.3. This makes me think perhaps that pin is muxed to something via the generated captivate software. I can't find anything in the BSP_configureMCU() routine that suggests this however. What could be going on here? I've tried this with the micro just connected to power with the pins broken out so I am certain other elements are not influencing the signal.
Thanks!