Direct connection between the esp gpio and the attiny updi/reset pin.

10K pull-up near the attiny to let it power on (100nF cap had to be removed as it screwed with updi comms)

No internal pullups or pulldowns enabled on the esp gpio

Issue was the SPI Flash speed, which had to be set to 40Mhz, auto settings defaulted to 80Mhz which was too fast for this chip (Max 50Mhz from the datasheet)

We got this working several months ago but forgot to update. Hope its not too late to help. Have no problems flashing an ATTINY1616 anywhere from 9600 baud to 230400 baud

Can't give exact source code but:
```
bool COM_Open(const updiprog_com_port_t com_port) {
esp_err_t err;

// Configure UPDI ...

idf.py menuconfig and latest test Logs attached

I've made a custom board using an ESP32-S3 processor that I'm having trouble flashing code onto.

Its currently using IS25LP032D-JKLE which is giving me Stage 2 bootloader checksum issues, even after a full-chip erase. When prototype boards were made using W25Q32JVZPIQ there were no issues, but with ...

I hadn't considered that process, but with what you've described I may be out of luck.

I guess this question is more Windows specific / less ESP32, but do you have any suggestions on how the 2 ports could be differentiated.

Is it possible (though probably not advisable) for one CDC descriptor to ...

Hi,

I'm developing a product around an ESP32-S3 module (WROOM) that registers 2 USB CDC Ports on the attached Windows computer (industrial application, the device will always be plugged into a Windows computer).

For the sake of easily configuring software on the Windows machine, I'd like the ...

Interested in this also - have a board with an ESP32-S3 main processor and an Attiny1616 for background input monitoring. Would love to be able to UPDI program the Attiny via the ESP.

Don't have any suggestions unfortunately. Just leaving a comment to get notified of replies

Hi,

I have a customboard running an ESP32-S3 WROOM Module. One line on this module is linked to an external button with a pull-up resistor on GPIO13 and I want this button to operate as a DeepSleep wakeup source.

For the majority of the time, the board wakes and reports that the button was ...