• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 82 subscribers
  • Views 1376 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How can I connect my c2000 launchpad GPIO32 abd GPIO33?

Kai Ren
Intellectual 355 points

Hello,

I just want to use oscilloscope to capture my c2000 launchpad I2C SDA and SCL wave, which are GPIO32 and GPIO33. But I found it's a little complicated that they need eight jumpers to achieve? JP4 ~ JP11? Below is your sch, I just want to know that how I should configure launchpad hardware to watch I2C activity.

BR

Ren Kai

  • 0
    TI__Mastermind 22025 points

    Ren,

    Sorry if that is a little confusing.  We had to do this to stay compatible to the MSP430 LaunchPad pinout.

    The jumpers are actually shorts which can be broken with a knife and then reconnected if needed using 0 ohm jumpers (the footprint is an 0402 with a connection between the two pads).  When the chip boots up, initially every pin is a high impeadance input.  If you configure GPIO32 and 33 as I2c the SPI pins which are also connected will still be Hi-Z so there will not be any contention.  If you need to use both SPI and I2c simultaneous you can cut some of those jumpers such that one goes to the outside pins while the other goes to the inside pins.

    Regards,
    Trey