Resolved! STM32F030/103 I2C slave not returning to listen state (0x28) after transaction
Edits: see updates below for listen stateGenerated code using the latest CubeIDE . I2C_GetMode is always 00h. Under which conditions does this mode value change to "slave" and how to move it into slave mode ? mode = HAL_I2C_GetMode (&hi2c1); /...