I/O port expansion control device and control method
A technology of a control device and a control method, which is applied in the direction of program control, computer control, general control system, etc., can solve the problem of insufficient I/O port resources, so as to solve the problem of insufficient I/O port resources, save costs, and realize the simple method effect
Active Publication Date: 2017-11-10
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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Problems solved by technology
This will naturally face the problem of MCU selection. Both cost and space will inevitably reduce MCU resources. For example, the number of I / O ports that can be used by MCU will be reduced, so that the product application will also face insufficient I / O port resources. problem with
[0003] Therefore, how to effectively solve the problem of insufficient I / O port resources has become a technical problem to be solved urgently
Method used
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[0037] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0038] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0039] figure 1 A block diagram of a control device for I / O port expansion according to an embodiment of the present invention is shown.
[0040] Such as figure 1 As shown, the I / O port expansion ...
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The invention provides an I / O port expansion control device and an I / O port expansion control method. The control device comprises a controller; a button circuit, connected to an I / O port of the controller and used for setting the I / O port as an input port when the controller detects whether button operation is performed in the button circuit; a display circuit, connected with the I / O port, and used for setting the I / O port as an output port when the controller detects the button operation in the button circuit and outputting a first signal through the output port so as to shut down a display device according to the first signal; and a sound making circuit, connected with the I / O port, and used for adding a sound making mark when the controller detects the button operation in the button circuit so as to open a sound making device to make a sound according to the sound making mark and the first signal. Through the technical scheme, three different external loads can be driven by using only one I / O port, the problem of insufficient I / O port resources can be effectively solved, and the cost is lowered.
Description
technical field [0001] The invention relates to the technical field of I / O port expansion, in particular to a control device for I / O port expansion and a control method for I / O port expansion. Background technique [0002] Since the development of middle and low-end automatic control electronic products will encounter cost and space problems, the first consideration of these problems is to start with saving costs and reducing space for electronic components in circuit control. This will naturally face the problem of MCU selection. Both cost and space will inevitably reduce MCU resources. For example, the number of I / O ports that can be used by MCU will be reduced, so that the product application will also face insufficient I / O port resources. used problem. [0003] Therefore, how to effectively solve the problem of insufficient I / O port resources has become a technical problem to be solved urgently. Contents of the invention [0004] The present invention aims to solve a...
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IPC IPC(8): G05B19/042
CPCG05B19/0423
Inventor 田茂桥黄开平房振何毅东麻百忠李信合黄兵杨乐
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD