Move PX4 Guide source into /docs (#24490)

* Add vitepress tree * Update existing workflows so they dont trigger on changes in the docs path * Add nojekyll, package.json, LICENCE etc * Add crowdin docs upload/download scripts * Add docs flaw checker workflows * Used docs prefix for docs workflows * Crowdin obvious fixes * ci: docs move to self hosted runner runs on a beefy server for faster builds Signed-off-by: Ramon Roche <mrpollo@gmail.com> * ci: don't run build action for docs or ci changes Signed-off-by: Ramon Roche <mrpollo@gmail.com> * ci: update runners Signed-off-by: Ramon Roche <mrpollo@gmail.com> * Add docs/en * Add docs assets and scripts * Fix up editlinks to point to PX4 sources * Download just the translations that are supported * Add translation sources for zh, uk, ko * Update latest tranlsation and uorb graphs * update vitepress to latest --------- Signed-off-by: Ramon Roche <mrpollo@gmail.com> Co-authored-by: Ramon Roche <mrpollo@gmail.com>
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+# Freefly Systems RTK GPS
+
+The [Freefly Systems RTK GPS Module](https://store.freeflysystems.com/products/rtk-gps-ground-station) is a multiband [RTK GPS module](../gps_compass/rtk_gps.md) from Freefly Systems that provides highly reliable navigation.
+The modules can act as either rovers (when installed on an aircraft) or base stations (when plugged into a computer).
+
+Main features include:
+
+- Multiband (L1/L2) receiver (u-blox ZED-F9P)
+- Concurrent reception of all 4 GNSS (GPS, Galileo, GLONASS, BeiDou)
+- Built-in magnetometer (IST8310), baro (BMP388), RGB LED, safety switch and safety LED
+
+:::info
+This module can be used with PX4 v1.9 or above (support for the u-blox ZED-F9P was added in PX4 v1.9).
+:::
+
+![FreeFly GPS Module](../../assets/hardware/gps/freefly_gps_module.jpg)
+
+## 购买渠道
+
+- [Freefly Store](https://store.freeflysystems.com/products/rtk-gps-ground-station)
+
+## Kit Contents
+
+An RTK GPS kit includes:
+
+- 2x GPS modules with antennas
+- 3m USB C to A cable
+- Magnetic quick-mount for base station module (1/4-20 thread for tripod mounting)
+- Screws to mount onto a Freefly AltaX
+
+## 配置
+
+RTK setup and use on PX4 via _QGroundControl_ is largely plug and play (see [RTK GPS](../gps_compass/rtk_gps.md) for more information).
+
+For the aircraft, you should set the parameter [SER_GPS1_BAUD](../advanced_config/parameter_reference.md#SER_GPS1_BAUD) to 115200 8N1 to ensure that PX4 configures the correct baudrate.
+
+## 接线和连接
+
+The Freefly RTK GPS comes with an 8 pin JST-GH connector that can be plugged into a PixHawk autopilot.
+For use as a base station, the module has a USB-C connector
+
+### 针脚定义
+
+The Freefly GPS pinout is provided below.
+For some autopilots, like the [Hex Cube](../flight_controller/pixhawk-2.md) and [PixRacer](../flight_controller/pixracer.md), all that is needed is a 1-1 8-pin JST-GH cable.
+
+| 针脚 | Freefly GPS                     |
+| -- | ------------------------------- |
+| 1  | VCC_5V     |
+| 2  | GPS_RX     |
+| 3  | GPS_TX     |
+| 4  | I2C_SCL    |
+| 5  | I2C_SDA    |
+| 6  | BUTTON                          |
+| 7  | BUTTON_LED |
+| 8  | GND                             |
+
+## 技术规范
+
+- u-blox ZED-F9P GPS Receiver
+  - Ultracap backup power for fast (hot-start) restarts
+  - EMI shield over receiver for improved EMI immunity
+- IST8310 Magnetometer
+- Safety-switch and safety LED
+- RGB LEDs for status indication
+  - NCP5623CMUTBG I2C Driver
+- BMP388 Baro on I2C bus
+- External, active antenna (Maxtena M7HCT)
+  - SMA connector
+- STM32 MCU for future CAN-based communication
+  - FW updates through USB connector
+- Connectivity:
+  - USB-C
+  - 2-way USB Switch to MCU and F9P
+  - SMA for active antenna (20mA max)
+  - 4-pin JST-GH CAN Bus (dronecode compliant)
+  - 8-pin JST-GH UART/I2C
+    -\*\* Power:
+  - Input from either (diode OR'd):
+  - USB (5V)
+  - CAN (4.7 to 25.2V)
+  - (4.7 to 25.2V)
+  - Power consumption <1W
+
+## More Information
+
+More information can be found on [Freefly's Wiki](https://freefly.gitbook.io/freefly-public/products/rtk-gps)