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fix(docs): Fix internal docs links (#26718)

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Hamish Willee
2026-03-12 14:29:35 +11:00
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docs/en/flight_controller/mro_pixhawk.md
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@@ -75,11 +75,172 @@ make px4_fmu-v3_default
## Debug Ports
See [3DR Pixhawk 1 > Debug Ports](../flight_controller/pixhawk.md#debug-ports)
### Console Port
The [PX4 System Console](../debug/system_console.md) runs on the port labeled [SERIAL4/5](#serial-4-5-port).
::: tip
A convenient way to connect to the console is to use a [Zubax BugFace BF1](https://github.com/Zubax/bugface_bf1), as it comes with connectors that can be used with several different Pixhawk devices.
Simply connect the 6-pos DF13 1:1 cable on the [Zubax BugFace BF1](https://github.com/Zubax/bugface_bf1) to the Pixhawk `SERIAL4/5` port.
![Zubax BugFace BF1](../../assets/flight_controller/mro/dronecode_probe.jpg)
:::
The pinout is standard serial pinout, designed to connect to a [3.3V FTDI](https://www.digikey.com/en/products/detail/TTL-232R-3V3/768-1015-ND/1836393) cable (5V tolerant).
| 3DR Pixhawk 1 | | FTDI | |
| ------------- | --------- | ---- | ---------------- |
| 1 | +5V (red) | | N/C |
| 2 | S4 Tx | | N/C |
| 3 | S4 Rx | | N/C |
| 4 | S5 Tx | 5 | FTDI RX (yellow) |
| 5 | S5 Rx | 4 | FTDI TX (orange) |
| 6 | GND | 1 | FTDI GND (black) |
The wiring for an FTDI cable to a 6-pos DF13 1:1 connector is shown in the figure below.
![Console Connector](../../assets/flight_controller/mro/console_connector.jpg)
The complete wiring is shown below.
![Console Debug](../../assets/flight_controller/mro/console_debug.jpg)
::: info
For information on how to _use_ the console see: [System Console](../debug/system_console.md).
:::
### SWD Port
The [SWD](../debug/swd_debug.md) (JTAG) ports are hidden under the cover (which must be removed for hardware debugging).
There are separate ports for FMU and IO, as highlighted below.
![Pixhawk SWD](../../assets/flight_controller/mro/pixhawk_swd.jpg)
The ports are ARM 10-pin JTAG connectors, which you will probably have to solder.
The pinout for the ports is shown below (the square markers in the corners above indicates pin 1).
![ARM 10-Pin connector pinout](../../assets/flight_controller/mro/arm_10pin_jtag_connector_pinout.jpg)
::: info
All Pixhawk FMUv2 boards have a similar SWD port.
:::
## Pinouts
See [3DR Pixhawk 1 > Pinouts](../flight_controller/pixhawk.md#pinouts)
#### TELEM1, TELEM2 ports
| Pin | Signal | Volt |
| ------- | --------- | ----- |
| 1 (red) | VCC | +5V |
| 2 (blk) | TX (OUT) | +3.3V |
| 3 (blk) | RX (IN) | +3.3V |
| 4 (blk) | CTS (IN) | +3.3V |
| 5 (blk) | RTS (OUT) | +3.3V |
| 6 (blk) | GND | GND |
#### GPS port
| Pin | Signal | Volt |
| ------- | -------- | ----- |
| 1 (red) | VCC | +5V |
| 2 (blk) | TX (OUT) | +3.3V |
| 3 (blk) | RX (IN) | +3.3V |
| 4 (blk) | CAN2 TX | +3.3V |
| 5 (blk) | CAN2 RX | +3.3V |
| 6 (blk) | GND | GND |
#### SERIAL 4/5 port
Due to space constraints two ports are on one connector.
| Pin | Signal | Volt |
| ------- | ------- | ----- |
| 1 (red) | VCC | +5V |
| 2 (blk) | TX (#4) | +3.3V |
| 3 (blk) | RX (#4) | +3.3V |
| 4 (blk) | TX (#5) | +3.3V |
| 5 (blk) | RX (#5) | +3.3V |
| 6 (blk) | GND | GND |
#### ADC 6.6V
| Pin | Signal | Volt |
| ------- | ------ | ----------- |
| 1 (red) | VCC | +5V |
| 2 (blk) | ADC IN | up to +6.6V |
| 3 (blk) | GND | GND |
#### ADC 3.3V
| Pin | Signal | Volt |
| ------- | ------ | ----------- |
| 1 (red) | VCC | +5V |
| 2 (blk) | ADC IN | up to +3.3V |
| 3 (blk) | GND | GND |
| 4 (blk) | ADC IN | up to +3.3V |
| 5 (blk) | GND | GND |
#### I2C
| Pin | Signal | Volt |
| ------- | ------ | -------------- |
| 1 (red) | VCC | +5V |
| 2 (blk) | SCL | +3.3 (pullups) |
| 3 (blk) | SDA | +3.3 (pullups) |
| 4 (blk) | GND | GND |
#### CAN
| Pin | Signal | Volt |
| ------- | ------ | ---- |
| 1 (red) | VCC | +5V |
| 2 (blk) | CAN_H | +12V |
| 3 (blk) | CAN_L | +12V |
| 4 (blk) | GND | GND |
#### SPI
| Pin | Signal | Volt |
| ------- | ------------ | ---- |
| 1 (red) | VCC | +5V |
| 2 (blk) | SPI_EXT_SCK | +3.3 |
| 3 (blk) | SPI_EXT_MISO | +3.3 |
| 4 (blk) | SPI_EXT_MOSI | +3.3 |
| 5 (blk) | !SPI_EXT_NSS | +3.3 |
| 6 (blk) | !GPIO_EXT | +3.3 |
| 7 (blk) | GND | GND |
#### POWER
| Pin | Signal | Volt |
| ------- | ------- | ----- |
| 1 (red) | VCC | +5V |
| 2 (blk) | VCC | +5V |
| 3 (blk) | CURRENT | +3.3V |
| 4 (blk) | VOLTAGE | +3.3V |
| 5 (blk) | GND | GND |
| 6 (blk) | GND | GND |
#### SWITCH
| Pin | Signal | Volt |
| ------- | -------------- | ----- |
| 1 (red) | VCC | +3.3V |
| 2 (blk) | !IO_LED_SAFETY | GND |
| 3 (blk) | SAFETY | GND |
## Serial Port Mapping
| UART | Device | Port |
| ------ | ---------- | --------------------- |
| UART1 | /dev/ttyS0 | IO debug |
| USART2 | /dev/ttyS1 | TELEM1 (flow control) |
| USART3 | /dev/ttyS2 | TELEM2 (flow control) |
| UART4 | |
| UART7 | CONSOLE |
| UART8 | SERIAL4 |
<!-- Note: Got ports using https://github.com/PX4/PX4-user_guide/pull/672#issuecomment-598198434 -->
## Serial Port Mapping