ESP Easy is very easy to flash on Windows using the installation utility contained in the project repository. If you are a Linux user (PC, Raspberry Pi, Orange PI …) or macOS, it will be necessary to use esptool.py already presented in this tutorial. In this tutorial, we will install on firmware on a Wemos D1 Mini, but the method also applies to all ESP8266 NodeMCU (attention, some boards need to be in bootload mode before you can flash the firmware).
Install Python and esptool.py
Before you begin, verify that the version 2.7.x of python is installed correctly. Open the Terminal and run Python. If Python is installed, the shell must be started. Type exit() to exit the shell.
Python 2.7.10 (default, Oct 23 2015, 19:19:21) [GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> exit()
If Python is not installed on your machine, install it by going here.
To install esptool.py, it is best to let Python load it so that all dependencies are installed at the same time.
pip install esptool
In case of difficulty, you can also run python -m pip install esptool or pip2 install esptool.
Launch PowerShell (which allows you to run Unix commands). Go to the esptool installation directory, for example Documents and launch the installation of esptool (and dependencies) as on macOS or Linux.
PS C:\Users\Christophe\Documents> pip install esptool Collecting esptool Downloading esptool-1.3.tar.gz Collecting pyserial>=2.5 (from esptool) Using cached pyserial-3.2.1-py2.py3-none-any.whl Installing collected packages: pyserial, esptool Running setup.py install for esptool ... done Successfully installed esptool-1.3 pyserial-3.2.1 PS C:\Users\Christophe\Documents>
You can now call esptool.py from anywhere. Indeed, it was installed in the default executables directory of Python (C: \ Python27 \ Scripts \).
Flash ESP Easy firmware on a Wemos D1 Mini
Now that everything is ready, we will be able to launch the installation. In a Terminal, place yourself in the ESP Easy directory. You can retrieve it directly from GitHub here or clone it using the command
The esptool.py command to flasher the flash memory of an ESP8266 is of the following form
esptool.py --port [serial-port-of-ESP8266] write_flash -fm [mode] -fs [size] 0x00000 [nodemcu-firmware] .bin
We must therefore pass the following parameters:
- The serial port on which the ESP8266 is connected. On moaOS or linux, run the ls /dev/tty.* command. On Windows, run mode in the command prompt
- mode (-fm or –flash_mode): dio by default
- size (-fs or –flash_size): 32m for 4MB
- nodemcu-firmware: the path to the binary to flash. Here ESPEasy_Rxxx_xxxx.bin
What gives for example for a Wemos D1 Mini (4MB)
esptool.py --port COM3 --baud 115200 write_flash -fm dio -fs 32m 0x00000 ESPEasy_R120_4096.bin
It is possible to specify other parameters
- baud (-baud): the transfer speed. In case of problem, it should not hesitate to decrease it to 115200 baud for example.
- after (–after): allows to reset (no_reset, hard_reset or soft_reset) after the flash operation.
How to flash ESP Easy on another ESP8266 NodeMCU board
Esptool.py is a utility for all ESP8266 boards on the market. It will be necessary to adapt the command by passing the parameters that correspond to your board. It also works for the new generation ESP32. To do this, it will be necessary to go in the documentation of esptool.py which is here. Esptool.py send another
The boards NodeMCU, WeMOS, HUZZAH Feather, Core Board, ESP32-WROVER-KIT are able to switch to bootload mode, for others it will be necessary to apply the classical method already explained in this tutorial.
To retrieve the characteristics of the board, run the command esptool.py –port COMx flash_id
C:\Users>esptool.py --port COM3 flash_id esptool.py v1.3 Connecting.... Manufacturer: ef Device: 4016
And on Windows?
On Windows, everything works the same. Esptool being a Python script, the program is cross-platform. It will simply change the port of destination. On Windows it will be of the form COM1, COM2 … To know the COM port to which the ESP8266 is connected, execute the command mode. The command allows to retrieve many more parameters than the command under Linux.
PS C:\Users\Christophe\Documents\esptool-master> mode Statut du périphérique COM3: ---------------------------- Baud : 1200 Parité : None Bits de données : 7 Bits d’arrêt : 1 Temporisation : OFF XON/XOFF : OFF Protocole CTS : OFF Protocole DSR : OFF Sensibilité DSR : OFF Circuit DTR : ON Circuit RTS : ON Statut du périphérique CON: --------------------------- Lignes : 3000 Colonnes : 120 Vitesse clavier : 31 Délai clavier : 1 Page de codes : 850
Nothing works ! Clear memory
If you encounter installation problems, you may try to erase the memory with the erase_flash command.
esptool.py --port COM3 erase_flash
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