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esptool.py:tldr:39df4
This command is used to write firmware onto an ESP8266 or ESP32 microcontroller using the esptool.py tool. Here is a breakdown of the command and its components:
-
sudo
: This command is used on Unix-based systems (like Linux or MacOS) and stands for "Super User Do". It is used to execute the following command as a superuser or administrator, granting access to lower-level system resources. -
esptool.py
: It is a Python-based tool specifically designed for flashing firmware onto ESP8266 or ESP32 microcontrollers. It communicates with the microcontroller through a specified serial port and baud rate. -
--port ${port}
: This option specifies the serial port connected to your microcontroller. The${port}
is a placeholder for the actual port name, which you replace with the appropriate value (e.g.,/dev/ttyUSB0
orCOM3
). -
--baud ${baud_rate}
: This option sets the baud rate for the serial communication. The${baud_rate}
is another placeholder that you replace with the desired rate (e.g., 115200 or 9600). -
write_flash
: This is the specific action to be performed with esptool.py. It instructs the tool to write new firmware to the flash memory of the microcontroller. -
0x0
: This specifies the starting address where the firmware will be written in the flash memory. In this case,0x0
represents the beginning of the memory. -
${path-to-firmware-bin}
: This is a placeholder for the actual file path of the firmware binary (*.bin) that you want to write to the microcontroller's flash memory. You should replace${path-to-firmware-bin}
with the specific path and filename.
By running this command, with appropriate values substituted, you will flash the firmware binary onto the ESP8266 or ESP32 microcontroller using the esptool.py tool.