Search found 52 matches

by lbernstone
Wed Jun 03, 2020 3:40 pm
Forum: ESP32 Arduino
Topic: ESP32 unable to execute uploaded program
Replies: 8
Views: 560

Re: ESP32 unable to execute uploaded program

Hold down gpio0, then press the reset button. This will put it into download mode.
Now you can flash or erase.
by lbernstone
Tue May 26, 2020 3:46 pm
Forum: ESP32 Arduino
Topic: Can I change the bootup settings in Arduino IDE? E.g. Boot log or flash mode
Replies: 2
Views: 366

Re: Can I change the bootup settings in Arduino IDE? E.g. Boot log or flash mode

You cannot modify the bootloader in arduino-esp32- they are pre-compiled. Use esp-idf or lib-builder if you want more control.
The only interaction you can have with the bootloader is hardware level. That's why there is a strapping pin to disable the logging.
by lbernstone
Fri May 22, 2020 6:41 pm
Forum: ESP32 Arduino
Topic: Best NTP-Time library for ESP32?
Replies: 13
Views: 15884

Re: Best NTP-Time library for ESP32?

Arduino-esp32 is built as an extension to ESP-IDF. So, the arduino functions call down to ESP-IDF, which provides a lot of standard libraries. In this case, the relevant tools are LWIP, which provides an SNTP app, and stdlib time.h. The posix time functions will work, along with the handy C++ wrappe...
by lbernstone
Wed May 20, 2020 3:04 am
Forum: ESP32 Arduino
Topic: Arduino build fails under Ubuntu 20.04
Replies: 5
Views: 343

Re: Arduino build fails under Ubuntu 20.04

esptool != toolchain. It is a utility used to upload the data to the device.
It is using your default python, which is currently python2. Use update-alternatives to modify that. You can then test by running `python ~/.arduino15/packages/esp32/hardware/esp32/1.0.4/tools/esptool.py`
by lbernstone
Sun May 17, 2020 4:48 pm
Forum: ESP32 Arduino
Topic: Arduino build fails under Ubuntu 20.04
Replies: 5
Views: 343

Re: Arduino build fails under Ubuntu 20.04

Your system is still running python2. I would suggest you move forward. Use update-alternatives to set your default to python3, and then use pip3 to install any missing dependencies.

Code: Select all

sudo update-alternatives --config python3
by lbernstone
Fri Apr 17, 2020 6:06 pm
Forum: ESP32 Arduino
Topic: ESP-WROVER (V4.1) LCD Aduino IDE
Replies: 1
Views: 1040

Re: ESP-WROVER (V4.1) LCD Aduino IDE

https://github.com/adafruit/Adafruit_SSD1306 would be a good place to start.
by lbernstone
Tue Apr 14, 2020 3:10 pm
Forum: ESP32 Arduino
Topic: BLEServer - Esp32 in reboot loop after specific line of code
Replies: 3
Views: 1117

Re: BLEServer - Esp32 in reboot loop after specific line of code

Decode your backtrace with https://github.com/me-no-dev/EspExceptionDecoder
The esp32 uses 3V3, so your 5V input is being reduced by a power supply which may not provide enough power. If the backtrace indicates an issue in wifi or phy init, that does indicate a power problem.

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