You can try: REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT); esp_restart(); (Note you probably need to include some headers to make that work, I'll leave that to you.) :D Thanks. It works linke a charm. #include "esp_system.h" #include "soc/rtc_cntl_reg.h" /** * @brief Software trigg...

ESP_Sprite wrote: ↑

Mon Apr 17, 2023 1:42 am

On which chip? The ESP32 doesn't have this, later chips (S2/S3, C series) sometimes do.

On ESP32 S3 and C3.
Thanks for reply. Could you give some example please?
Some code snippet will help a lot.

The only way to switch to download mode I've found was to pull some pin physically during power up.
Is there a method to trigger download mode by app?

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