esptool
This is a work in progress and has not yet been fully tested I bundle my fluepdot firmware with this tool to ship a standalone update utility, which I prefer over
remote code execution on customer HWOTA updates.
Compilation
go get github.com/fluepke/esptool
cd ${GOPATH-$HOME/go}/src/github.com/fluepke/esptool
go build
./esptool <args>Usage
It only works on Linux as of right now, because Microsoft(r) Windows(tm)(c) does not support termios. Concerning MacOS: Buy me a macbook.
Esptool offers the following subcommands:
- version: Show version info and exit
- info: Retrieve various information from chip
- flashRead: Read flash contents
- flashWrite: Write flash contents
to see the help, type ./esptool <subcommand> -h
Examples
Read various information and the partition table from chip, then display them in JSON format:
./esptool info -serial.port /dev/ttyUSB0 -jsonClick to see command output
{
"ChipType": "ESP32D0WDQ6",
"Revision": "1",
"Features": [
"240MHz",
"WiFi",
"Single Core",
"VRef calibration in efuse",
"Coding Scheme None",
"Bluetooth"
],
"MacAddress": "24:6f:28:92:ef:20",
"Partitions": [
{
"name": "nvs",
"type": "data",
"subtype": "nvs",
"Offset": 36864,
"size": 16384
},
{
"name": "otadata",
"type": "data",
"subtype": "factory",
"Offset": 53248,
"size": 8192
},
{
"name": "phy_init",
"type": "data",
"subtype": "phy",
"Offset": 61440,
"size": 4096
},
{
"name": "factory",
"type": "app",
"subtype": "factory",
"Offset": 65536,
"size": 3145728
},
{
"name": "config",
"type": "66",
"subtype": "35",
"Offset": 3211264,
"size": 4096
}
]
}Write data to flash
./esptool flashWrite -flash.file=/home/fluepke/git/fluepdot/software/firmware/flipdot-firmware.bin -flash.offset=0x10000 -serial.port=/dev/ttyUSB0 -serial.baudrate.transfer=500000 -serial.baudrate.connect=115200