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Uart interface circuit and uart communication method and device

A technology of interface circuit and communication method, which is applied in the field of uart interface circuit, can solve the problems of poor feasibility of uart interface circuit, and achieve the effect of improving feasibility and reducing resource consumption

Pending Publication Date: 2022-07-08
SHENZHEN TOPBAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a uart interface circuit, aiming to solve the problem of poor feasibility of the uart interface circuit in the prior art

Method used

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  • Uart interface circuit and uart communication method and device
  • Uart interface circuit and uart communication method and device

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Embodiment 1

[0051] In some optional embodiments, the present application provides a uart interface circuit, including a host, at least one slave, and at least one isolation diode;

[0052] The host includes a UART data receiving interface and at least one timer in the pull-up state to simulate the UART data sending interface sent by the UART;

[0053] The slave includes a uart data receiving interface and a uart data sending interface;

[0054] Each uart data sending interface of the host is connected with the uart data receiving interface of each slave in one-to-one correspondence;

[0055] The uart data transmission interface of each slave is respectively connected with the cathode of an isolation diode;

[0056] The anodes of all isolation diodes are connected in parallel to the uart data receiving interface of the host;

[0057] The host uses a timer interrupt resource to generate the timing sequence sent by the simulated uart, sends data commands to each slave in time-sharing, and ...

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Abstract

The invention is suitable for the technical field of communication, and provides a uart interface circuit and a uart communication method and device.The circuit comprises a host, a uart data receiving interface and at least one uart data sending interface which is in a pull-up state and used for simulating uart sending through a timer; the at least one slave computer comprises a uart data receiving interface and a uart data sending interface; the cathode of each isolation diode is connected with the uart data sending interface of one slave machine; the anodes of the isolation diodes are connected in parallel to a uart data receiving interface of the host; the uart data sending interfaces of the host are respectively connected with the uart data receiving interfaces of the slaves in a one-to-one correspondence manner; and the host uses a timer to interrupt resources to generate a time sequence simulating uart sending, sends a data instruction to each slave in a time-sharing manner, and receives the data instruction returned by each slave in a time-sharing manner through a uart module of the host. According to the invention, the consumption of the timer and I / O port resources can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a uart interface circuit, a uart communication method and a device. Background technique [0002] With the continuous advancement of communication and IoT technology and the gradual improvement of users' requirements for communication speed, most electrical equipment has added IoT technology to realize the communication function between devices. For example, the control system of the power exchange cabinet needs to communicate with each battery, or the communication between each power exchange cabinet and the general control system. [0003] The IOT communication of electrical equipment is realized by the uart data sending and receiving function of the single-chip microcomputer. The commonly used single-chip microcomputer comes with a limited number of uart modules, usually less than 6. However, in the actual use process, there is often a scenario where the hos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04J3/06H04L12/02
CPCH04L7/0008H04L7/0041H04J3/0602H04L12/02Y02D10/00
Inventor 陈玉
Owner SHENZHEN TOPBAND CO LTD