esplink

A self learning project that tries to flash code to esp chips without any dependency of esp-idf, esptool, etc.

Table of Contents

• Table of Contents
• Disclaimer
• Flashing ESP32
• Make esp32 binary image from elf file
• Reference

Disclaimer

This is only for self learning purpose, currently only support esp32c3 chips.

Flashing ESP32

./esp-flash --help

All options:
  --help                 Show this help message and exit
  --verbose              Show debug message during execution

Parameter for flash:
  --port arg             Port of connected ESP MCU
  --baud arg (=115200)   Baudrate of the communication
  --offset arg           Flash offset
  --flash-param arg      Flash parameter, including SPI flash mode, SPI flash 
                         speed, and flash chip size
  --chip arg (=esp32c3)  Chip type, currently support only esp32c3

Example:

./esp-flash flash main.bin --port /dev/ttyUSB0 --offset 0

Make esp32 binary image from elf file

./esp-mkbin --help

Parameter for mkbin:
  --verbose             Show debug message during execution
  --file arg            elf file to make binary
  --output arg          output file name
  --chip arg            chip name, possible value: ESP32, ESP32S2, ESP32C3, 
                        ESP32S3, ESP32C2
  --help                Show this help message and exit
  --flash-param arg     flash param

Example:

./esp-mkbin --file main.elf --output main.bin --chip ESP32C3

Reference

1. This project is heavily inspired by this github repo
2. esp32c3 trm