WanLei

@giga993 @warren-velocity Hi, I'm able to reproduce the issue correctly, I need other team to help debugging the issue. For now, don't have update. But what can be confirmed is...

@warren-velocity only ESP32 has this issue

@python-destroyer You already set `SPI_DEVICE_3WIRE `, then don't need `SPI_DEVICE_HALFDUPLEX`, remove halfduplex flag will work. But thank you for your report, I'll add check for this condition.

@python-destroyer Sorry for late, maybe hardware limitation, need time to check it

@HDLA-BG Can you more clear the issue - who using esp32s3? - what is ECU and what is simulator? is they using esp32s3? - BUS don't goto bus off, devices...

@HDLA-BG @diplfranzhoepfinger Yes @Dazza0 's description is the reason, I just discover this recently will fix asap

@HDLA-BG Hi, almost your change `GPIO_MODE_DISABLE` is right, you can have a try replace the func in `twai.c` with follow: ```c #include "esp_private/gpio.h" #include "soc/io_mux_reg.h" static void twai_configure_gpio(int controller_id, gpio_num_t...

@keelung-yang emmm thanks for your idea But IIUC, you are asking for independent filter for each ID? AFAIK, other solutions like ST do support independent mailbox with filters, but still...

@andrew-elder Have you tried code changes from Dazza0 above https://github.com/espressif/esp-idf/issues/9697#issuecomment-1591011346. And do you have some custom setting like `no_queue` ? and your chip version ?

@powerbroker Hello, As you see, it not a bug, it driver design as this,,, - If you only set `t.length = 8 * 9;`, tx and rx will be same...