Main control right switching method of general processing unit

The invention relates to the technical field of embedded computer systems, and provides a master control right switching method for universal processing units, which comprises the following steps of: designing two universal processing units for master and slave backup respectively, designing two paths of RS422 level interfaces in each universal processing unit, determining one universal processing unit as a master control unit to execute a main task, and determining the other universal processing unit as a slave control unit to execute a main task; and when the main control unit fails, the backup unit is switched to the main control unit through a switching mechanism, and application configuration is reconstructed, so that normal operation of tasks on a machine is ensured. According to the method, the system has the capability of adaptively switching the master control right, and the availability and reliability of the system are improved. 本发明涉及嵌入式计算机系统技术领域，提供一种通用处理单元的主控权切换方法，所述方法设计两个通用处理单元分别进行主、从备份，在每台通用处理单元