Clock signal detection method and apparatus in electronic devices
A clock signal and electronic equipment technology, applied in the field of network communication, can solve the problems of inability to realize clock signal detection, poor universality of the detection circuit, and high cost
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[0052] The core of the invention is to use the interrupt port of the CPU to realize the detection of the detected clock signal. Therefore, it is first necessary to determine the interrupt signal of the interrupt port of the CPU, then input the detected clock signal into the interrupt port of the CPU, and trigger the detection of the detected clock signal according to the determined interrupt signal. Perform clock detection.
[0053] The technical solution provided by the present invention will now be further described in detail in conjunction with the accompanying drawings.
[0054] The flow chart of the clock signal detection method of the present invention is shown in FIG. 2 .
[0055] In FIG. 2, step 200, determine the clock frequency of the detected clock signal, and set the high-level predetermined count value and the low-level predetermined count value of the clock standard according to the clock frequency.
[0056]Go to step 210, respectively set the interrupt signals...
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