Holybro Pixhawk Debug Adapter
Description:
Holybro Pixhawk Debug Adapter delivers JTAG, SWD and Serial interfaces for debugging Pixhawk-compatible hardware. It supports two Pixhawk debug connector standards: the 6-pin Target for FMUV5 and the 10-pin Target for FMUVxX. Its built-in FTDI serial interface removes the requirement for a separate FTDI cable.
Engineered to avoid backfeeding the FMU, this adapter keeps debugging stable and reliable no matter the power sequencing. It accepts two Host JTAG interface standards. The 10-pin ARM variant works with the Segger Jlink-mini, while the 20-pin version pairs with Segger Jlink or STLink. The adapter also exposes easy-to-access ground points.
When you use the 10-pin target cable, you gain access to two CPU GPIOs for precise signal timing. The 10-pin target interface supports target reset in three ways: a push button, JTAG, or optional RTS from the serial interface.
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Jumperable Options:
JP1 – Normally Open. Solder this jumper closed to bypass the RXD_DEBUG back-feeding protection diode. You only need this change if your target already has its own back-feeding protection diode and fails to receive data from mismatched signal levels.
JP2 – Normally Open. Solder this jumper closed to link the HOST RTS signal to the CPU nRST line. With this jumper closed, three sources control CPU nRST: the reset button, JTAG reset, and HOST RTS. Leave it open to disconnect the HOST RTS line. Use this setup for automated test racks.
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