• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 34 subscribers
  • Views 1885 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.

Original question:

PCF8574: PCF8574 Interface

TCA9554: TCA9554 Interface

Preethi Bhat
Prodigy 80 points

Part Number: TCA9554
Other Parts Discussed in Thread: PCA9554, , PCA9555

Hi,

I am using TCA9554DBQR for I2C to GPIO expansion. But unable to find any reference source code.

Is there any Arduino compatible  code is available for this IC?

Regards,

Preethi

  • 0
    TI__Guru* 78111 points

    Hey Preethi,

    We do not provide software/drivers for our I2C devices (unless it is included in an EVM release) however you can find arduino code by searching for PCA9554 as our TCA line up fixes some issues from the PCA line up and is a direct replacement to our competitor's PCA9554. If there is code for PCA9554 then it will also work for TCA9554.

    This link also appears to be useful.

    This code I find on arduino's website does not particularly mention PCA9554 but it does mention PCA9555 which is a 16 bit version so the code should also be similar. (registers may be a little different though I believe this can get you started)

    Thanks,

    -Bobby

  • 0 in reply to BOBBY
    Prodigy 80 points

    Dear Bobby,

    Thank you for the reply.

    We will check and get back to you.