stm32 i2c slave v1 second byte has many duplicates when calling `respond_to_write` async

[ChocolateLoverRaj]

See #5260 (comment)

I am using i2c with a esp32c3 as the controller and stm32 as the peripheral. The esp32c3 sends [10, 20].

When calling respond_to_write on the stm32, I'm seeing received data: [10, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20] when the i2c controller is an esp32c3, even with 4.7k pull up resistors. This only happens when using respond_to_write and does not happen when using blocking_respond_to_write. This happens at both 100kHz and 400kHz.

[HybridChild]

@ChocolateLoverRaj can you test if my pull-request actually fixed this issue?

[ChocolateLoverRaj]

It did not fix this issue, which is expected. In this issue, I'm not even using an stm32 as the master. I'm using an esp32c3. So fixing a bug with the stm32 master code wouldn't fix this issue.

[HybridChild]

Oh right, that makes sense... I guess you can reopen this issue then.

[ChocolateLoverRaj]

GitHub is not letting me reopen this issue.