Is it possible to get access to the the stub code for flash programming? Working on improving the flash programming speed by a few multiples. The 2232HL chip on ESP_PROG is capable of 12Mbps but there may be other limitations on the flash program process that result in errors such as this one in bau...

RMandR wrote: ↑

Sat Jan 28, 2023 2:44 pm

There is a previous discussion here which might help: https://esp32.com/viewtopic.php?t=8219

Verified. Markus has a solution in the post above that does work on Linux and resolves the latency issue.

Hi RMandR, Using fcntl and termios, I found a way to get the stuff to work very reliable for me. Unfortunately this only works on Linux. With my limited python competence I did not manage to make the changed script compatible to the other platforms (where fcntl and termios don't exist). Anyway, may...

There is a previous discussion here which might help: https://esp32.com/viewtopic.php?t=8219

Not sure if there has been further progress from there.

using esp-prog for production and once in a while something blows in the hardware and esp-prog board just refuses to set IO0 and EN pins until we swap it with a new one. At present we have 4 of these _blown_ boards. Wild guess: Q1-Q2 are rated for 500mA and connected to FT_nDTR and FT_nRTS pins whic...

I'm noticed that automatic download through USB-Serial (FTDI) hardware does not work in some circumstances: - running from guest VM - Some MacOs system - running on Host OS, but being called from within a larger GUI (python) program. I've tried fiddling with the delays in esptool.py reset code witho...

@ESP_Sprite thank you for your response. Yes, the idea is to keep esp32 in reset and flash the EXT SPI using something like a SEGGER J-LINK that has support for e.g. Winbond flashes and can theoretically flash at 100Mhz (even at twice the current USB serial speed, we'll save many seconds per device)...

For ESP32-WROOM, is there any documentation or guidance on connecting and directly programming the ext QSPI flash chip instead of serial programming via esp32 chip and esp_tool.py? Most QSPI chips these days support 100Mhz as opposed to much slower process of going through ESP32. The datasheet for E...

Update: The hang and SO occurs when esp_restart() is executing . I tried to follow the wifi API guide saying: Wi-Fi Deinit Phase s8.1: Call :cpp:func:`esp_wifi_disconnect()` to disconnect the Wi-Fi connectivity. s8.2: Call :cpp:func:`esp_wifi_stop()` to stop the Wi-Fi driver. s8.3: Call :cpp:func:`e...

In IDF4.4 OTA nearly exactly the same as the advanced OTA example. Noticed that sometimes the device hangs/crashes and even the WDT does not get involved reboot . But we see messages from wifi: I (143926) esp_image: Verifying image signature... I (143926) secure_boot_v2: Take trusted digest key(s) f...