How to use i2c extension connector on stm32f769i-discovery

HReis.1 · ‎2022-03-27

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?

Tesla DeLorean · ‎2022-03-27

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

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shanxing · ‎2024-09-14

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.