Esptool

This Component provides Espressif’s tool for reading and writing firmware and other data to hardware.

Options

SPI_SPEED

Clock speed for flash memory (20, 26, 40 or 80). Default is 40.

SPI_MODE

Flash memory operating mode (quot, dio, dout, qio). Default is qio.

SPI_SIZE

Size of flash memory chip (256KB, 512KB, 1MB, 2MB, 4MB). Default is 512K bytes.

ESPTOOL

Full path of esptool.py

COM_PORT_ESPTOOL

Port to use for flashing device. Default is COM_PORT.

COM_SPEED_ESPTOOL

Baud rate to use for flashing device. Default is COM_SPEED.

References

• Source Code
• Esp8266 Core Component Component

Used by

• Sming (Esp8266) ,Component

Environment Variables

• COM_PORT_ESPTOOL
• COM_SPEED_ESPTOOL
• ESPTOOL
• SPI_MODE
• SPI_SIZE
• SPI_SPEED

Submodule: esptool

• esptool.py
  • Installation / dependencies
    • Easy Installation
    • Manual Installation
  • Usage
  • Common Options
    • Serial Port
    • Baud rate
  • Commands
    • Write binary data to flash: write_flash
      • Setting flash mode and size
      • Compression
    • Read Flash Contents: read_flash
    • Erase Flash: erase_flash & erase region
    • Read built-in MAC address: read_mac
    • Read SPI flash id: flash_id
    • Convert ELF to Binary: elf2image
      • elf2image for ESP8266
      • elf2image for ESP32
    • Output .bin image details: image_info
    • Advanced Commands
  • Additional ESP32 Tools
  • Serial Connections
  • Entering the Bootloader
    • Boot Mode
  • Flash Modes
    • Flash Mode (–flash_mode, -fm)
    • Flash Frequency (–flash_freq, -ff)
    • Flash Size (–flash_size, -fs)
      • ESP8266 and Flash Size
      • ESP32 and Flash Size
  • Advanced Options
  • Remote Serial Ports
  • Troubleshooting
    • Bootloader won’t respond
    • write_flash operation fails part way through
    • write_flash succeeds but program doesn’t run
      • Wrong Flash Mode
      • Insufficient Power
        • Insufficient Capacitance
        • Power Supply Rating
      • Missing bootloader
      • SPI Pins which must be disconnected
    • Early stage crash
  • Serial Terminal Programs
  • Tracing esptool.py interactions
  • Using esptool.py from Python
  • Internal Technical Documentation
  • About