{"record":{"id":"ff5db2d4d7ea8b9b","repo":"slint-ui/slint","slug":"home-automation-esp32-p4-failed-e-cmd-exited-with-e","errorCode":null,"errorMessage":"home-automation ESP32-P4 failed: ${e.cmd} exited with ${e.returncode}","messagePattern":"home-automation ESP32-P4 failed: (.+?) exited with (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"scripts/build-demo-images.py","lineNumber":329,"sourceCode":"        run(\n            [\n                \"python\",\n                \"-m\",\n                \"esptool\",\n                \"--chip\",\n                \"esp32p4\",\n                \"merge_bin\",\n                \"-o\",\n                str(out / image),\n                \"-f\",\n                \"raw\",\n                \"@flash_args\",\n            ],\n            cwd=directory / \"build\",\n            env=env,\n        )\n    except subprocess.CalledProcessError as e:\n        warn(\n            f\"home-automation ESP32-P4 failed: {' '.join(e.cmd)} exited with {e.returncode}\"\n        )\n        return [], [\"esp32-p4-function-ev-board\"]\n    return [\n        {\n            \"feature\": \"esp32-p4-function-ev-board\",\n            \"name\": \"ESP32-P4 Function EV\",\n            \"method\": \"esp\",\n            \"file\": image,\n            \"chip\": \"esp32p4\",\n            \"offset\": \"0x0\",\n            \"demo\": \"home-automation\",\n        }\n    ], []\n\n\ndef emit_demos_json(out: Path, base: str, records: list[dict]) -> None:\n    log(f\"writing {out / 'demos.json'}\")","sourceCodeStart":311,"sourceCodeEnd":347,"githubUrl":"https://github.com/slint-ui/slint/blob/bb937076de3f7919766c1f25e2e969367cf77e9a/scripts/build-demo-images.py#L311-L347","documentation":"In build_p4, if any idf.py invocation (build or flashing-stage command like @flash_args) exits non-zero, the script warns 'home-automation ESP32-P4 failed: <cmd> exited with <returncode>' and returns the esp32-p4-function-ev-board feature in its failed list. Like build_mcu, the failure is recorded rather than raised, so other images still build and demos.json generation can proceed.","triggerScenarios":"idf.py build (or the subsequent flash-args command run in demos/home-automation/esp-idf/build) returns a non-zero exit code — compile error in the ESP-IDF project, wrong ESP-IDF version (< 6.0), missing chip support target, or failing CMake configuration.","commonSituations":"ESP-IDF version too old for ESP32-P4 support; uncommitted/broken home-automation demo code; missing ESP-IDF python dependencies in the activated env; out-of-disk during the P4 build.","solutions":["Inspect the idf.py output above the warning for the root cause and fix the project/environment","Ensure ESP-IDF >= 6.0 is active (idf.py --version) with the esp32p4 target installed","Re-run idf.py fullclean in demos/home-automation/esp-idf then rebuild","Continue without the P4 image if not needed — the failure only omits it from demos.json"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":". ~/esp/esp-idf/export.sh && idf.py --version && idf.py set-target esp32p4  # pre-validate before the scripted build","typeGuard":null,"tryCatchPattern":"try:\n    subprocess.run(cmd, cwd=directory, env=env, check=True)\nexcept subprocess.CalledProcessError as e:\n    warn(f\"home-automation ESP32-P4 failed: {' '.join(e.cmd)} exited with {e.returncode}\")\n    return [], [\"esp32-p4-function-ev-board\"]","preventionTips":["Use ESP-IDF >= 6.0 with esp32p4 target support installed","Run idf.py fullclean after switching ESP-IDF versions","Validate the home-automation ESP-IDF project compiles in its own CI job","Keep the ESP-IDF python venv dependencies up to date"],"tags":["esp32","esp-idf","build","subprocess"],"backgroundTag":"subprocess-nonzero-exit","analyzedSha":"bb937076de3f7919766c1f25e2e969367cf77e9a","analyzedAt":"2026-09-16T01:37:20.251Z","contentChangedAt":"2026-09-16T01:37:20.251Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}