External Mode Open Protocol Connect command failed Reason: Unable to connect to target application: XCP internal error: timeout expired, in response to XCP CONNECT command

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w
w 2025-3-25
回答： Pratyush Swain 2025-3-27
I try to run an example in mathwork(px4demo_uORBRead), my board is pixhawk6C.
openExample('px4/GettingStartedWithUORBBlocksPX4SPKGExample','supportingFile','px4demo_uORBRead')

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回答（1 个）

Pratyush Swain
Pratyush Swain 2025-3-27
Hi w,
I recommend going through the following discussions in the forum where you can find some insights and direction:
1 - https://www.mathworks.com/matlabcentral/answers/1885437-why-do-i-get-xcp-internal-error-timeout-expired
2 - https://www.mathworks.com/matlabcentral/answers/2041181-px4-hil-with-pixhawk-6x-with-monitor-and-tune-error-could-not-connect-to-target-application-xcp-int
Also make sure to check your serial communication configuration like:
1. Baud Rate Settings: Baud rate configured in Simulink should baud rate expected by the Pixhawk 6C
2. COM Port Assignent: Verify that the COM port assigned to the Pixhawk 6C is correctly specified in Simulink's External mode settings.
Hope this helps.

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