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CC2538: I2C slave device example on CC2538

Sufiyan Syed
Prodigy 170 points

Part Number: CC2538

Could someone point me to the necessary portions of the loop back test you would use for I2C slave? Is there some example available for the same to use the CC2538 I2C as slave.

  • 0
    Guru 735695 points

    You can find I2C example in cc2538 foundation firmware which can be downloaded from

  • 0 in reply to YiKai Chen
    Prodigy 170 points

    I have already tried that, but I dont see any slave only examples. I only see the master slave loopback. I am thinking of which Hardware registers to set.

    Now, I am setting these:

    SYS_CTRL_RCGCI2C - run mode
    SYS_CTRL_SRI2C - reset position and then normal
    Setting the SCL, SDA pins/ ports in the peripheral mode
    Setting the I2CM_CR, I2CS_CTRL to I2CS_CTRL_DA (ie the enable slave function)

    Am I doing this right? Or are there other registers I need to set?

    When I tried with these, the example didnt work.