Serial port communication self-check method
A serial port communication and serial port technology, which is applied in the field of serial port communication self-inspection, can solve the problems of large manpower and material resources, human operation errors, cumbersome repeated wiring, etc., and achieve the effect of reducing test complexity and improving test speed
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[0016] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0017] A serial port communication self-test method, comprising the following steps:
[0018] Step 1: The microprocessor sends instructions according to the type of the serial port to be detected, and selects the corresponding serial port drive unit working mode:
[0019] Step 2: The microprocessor sends a self-loop control instruction to the serial port drive unit through the drive and logic control unit, the serial port expansion chip and the isolation protection circuit, so that the serial port drive unit drives the controlled component, so that the The data receiving end and the data transmitting end of the serial port...
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