OK. Thanks. I did have more than one pin assigned to SCL. SSP pin configurator assigned Port 2 pin 04, then in my code I assigned Port 4 pin 7.
I changed my code as follows:
- In my code first I re-assign Port2 pin 04 to be an input with a pull up resistor
- Then I assign Port 4 pin 7 to be SCL0_B
After I did this I now get two clock pulses each time I touch the screen instead of one clock pulse. I still should be getting at least 8 pulses.
As to using the same Suffix:
- I am used to the RX family where you can mix and match pin assignments so when I designed my hardware I used SCL0_A and SDA0_B for my RIIC port
- I chatted with Warren about this a couple of days ago. He indicated that you can use pins with different suffixes as long as you understand that there may be some signal skew between the signals.
- In other words Renesas cannot guarantee the timing per the datasheet if you mix suffixes.
- Reading 20.6 I think it does not prohibit mixing suffixes. It only prohibits assigning the same function to two or more pins.
I am open to any other ideas ???
Regards,
Steve D