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The application discloses a PCIE device state detection method and system, electronic equipment and medium, relates to the technical field of PCIE device, and comprises the following steps: scanning a PCIE device tree on a server mainboard, and obtaining a PCIE device identifier on the PCIE device tree; disabling and enabling the connection state of the PCIE device and a central processor according to the device identifier; after the connection state of the PCIE device is disabled and enabled each time, performing PCIE link training once within a preset time; and after each link training is completed, the register results associated with the PCIE device are read and traversed to analyze the PCIE device state. The application can perform pressure test on the PCIE device, effectively improves the detection and diagnosis efficiency of the PCIE device, and if the PCIE device fails, the register information can be inquired, and the failure cause can be analyzed and located.

The application provides a kind of support extended vehicle-mounted multi-channel camera simulation method and system.Method includes: obtaining specified picture or video data, generating the original picture data of each frame, and according to the format of PPI, it is packed into PPI data format, and the ECC and CRC data required for each line are calculated;According to the resolution size of each camera, the required simulation simulation platform memory space is generated;The generated PPI, ECC and CRC data are injected into the memory space;According to the output state of the platform, update the data in the memory space to the next frame data during frame blanking;Using the PPI format module of the platform, according to the configuration of each channel, the data is divided into different Lane according to PPI format, and is output to CSI2 HOST according to PPI format.The application can simulate different types of cameras and their parameters.

Embodiments of the present application provide an influence link generation method, device and storage medium, comprising: in response to a link generation request of test code, obtaining a development branch submission record corresponding to the test code. According to the development branch submission record, a changed function in the test code is determined, and an API interface function corresponding to the changed function is determined, the API interface function being called by other function modules except the function module where the changed function is located. A target function module having a dependency relationship with the API interface function and an entry point function corresponding to the target function module are determined. According to the changed function, the API interface function and the entry point function, an influence link corresponding to the test code is generated. By identifying the API interface function exposed by the changed function, the target function module having the dependency relationship is found, so as to know all external calling points possibly affected by the change, and then the cross-cluster calling condition of the changed function is known, and the influence link can be generated more accurately.