Writing to I2C through UEFI application

Discussion in 'General Discussion' started by Ruvim P, Jul 27, 2022.

  1. Ruvim P

    Ruvim P UDOOer

    Jul 27, 2022
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    I am writing a program to talk to a device in the UEFI shell through Edk2. I've successfully been able to write and read to the bus through EFI_I2C_MASTER_PROTOCOL but for whatever reason at the end of every write it sends an extra byte of 0. I am wondering if it has to do with SmBus appending a byte for PEC but regardless is there any way to write without that extra byte?

    Thank you for your time, have a great day!

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