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Visitor II
March 27, 2022
Question

How to use i2c extension connector on stm32f769i-discovery

  • March 27, 2022
  • 1 reply
  • 1009 views

UM2033 mentions that Wi-fi connector of stm32f769i-discovery development board can be configured for i2c board using signals EXT_SCL and EXT_SDA that are connected to PG3 and PG6, however datasheet of MCU (DS11532) these pins do not support I2C.

Is this configuration intended for a software solution?

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    1 reply

    Graduate II
    March 27, 2022

    It looks like you'd do this as bit-bang I2C,along with changing the solder bridges.

    Not sure there are any examples where this is used.

    If you need I2C perhaps use the D14/D15 on the Arduino connection PB9/PB8

    Visitor II
    September 14, 2024

    Hello Tesla:

              Since PB8 and PB9 have been used for other purposes, I can only use PG3 and PG6,the extension I2C connector.After I change the port to PG3 and PG6,how can I configure the port, but the interface will become low, so that it is always busy and cannot be used? I really need your help.Thanks.