added docs

Author: rssdev10

.github/workflows/release.yml

@@ -96,3 +96,4 @@ jobs:
         with:
           name: ${{ matrix.platform.bin }}.zip
           path: target/${{ matrix.platform.target }}/release/${{ matrix.platform.bin }}.zip
+          retention-days: 1

LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 rssdev10
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# riden-flashtool
+**Rust-based firmware tool for Riden RD60xx PSUs**
+
+Unofficial cross-platform tool for flashing Riden RD6006(P)/RD6012/RD6018/RD6024 power supplies.  
+> Derived from [tjko/riden-flashtool](https://github.com/tjko/riden-flashtool/) with Rust implementation
+
+## Features
+- Firmware flashing via serial port
+- Device detection and diagnostics
+- Bootloader mode switching
+- Serial port listing (`-l` flag)
+- No external dependencies
+
+## Installation
+1. Install [Rust toolchain](https://www.rust-lang.org/tools/install)
+2. Build from source:
+```bash
+cargo build --release
+# Binary appears at: ./target/release/riden-flashtool
+```
+
+## Usage
+### Basic commands
+```bash
+# List available serial ports:
+./riden-flashtool -l
+
+# Get device info (normal mode):
+./riden-flashtool /dev/ttyUSB0
+
+# Flash firmware (auto-detects baudrate):
+./riden-flashtool /dev/ttyUSB0 firmware.bin
+
+# Specify custom baudrate:
+./riden-flashtool /dev/ttyUSB0 firmware.bin --speed 115200
+```
+
+### Example Output
+```bash
+Serial port: /dev/ttyUSB0 (115200bps)
+Firmware size: 109888 bytes
+Check if device in bootloader... No
+Found device: RD6006 (60062) v1.40
+Rebooting to bootloader...
+Device info (bootloader):
+    Model: RD6006 (60062)
+    Firmware: v1.40
+    S/N: 000xxxxx
+Updating firmware...b'OK'
+Firmware update complete.
+```
+
+## Recovery Mode
+If device fails to boot after flashing:
+1. **Manual bootloader entry**: Press/hold `ENTER` while powering on unit
+2. Re-run flashtool with firmware file
+
+## Troubleshooting
+- `No response from device`:
+  - Verify "Interface" setting is **USB** in PSU menu
+  - Connect directly to computer (avoid USB hubs)
+  - Ensure serial port permissions (Linux: `sudo usermod -aG dialout $USER`)
+- Failed flashing: Retry in bootloader mode (manual method above)