Serial bus slave address setting system

Abstract

The invention provides a serial bus slave address setting system for realizing the automatic sequence setting of slave addresses, comprising a main device, a plurality of slaves and a plurality of switches, wherein the main device is arranged at one end of a serial bus and is used for setting addresses for the slaves; the slaves are respectively connected to the main device by the serial bus; theswitches respectively correspond to the slaves one to one, are respectively arranged behind the corresponding slaves and are controlled by the corresponding slaves, each slave of the slaves responds to an initialization setting instruction of the main device to control the corresponding switch in a disconnection state, responds to a signal of an effective address from the main device to control the corresponding switch in a conducting state, and in a word, due to the adoption of a serial bus structure and a method, slave addresses can be automatically and sequentially set.

Description

technical field [0001] The invention relates to the field of bus communication, in particular to a serial bus slave device address setting system. Background technique [0002] With the development of technology, embedded controllers and serial master-slave buses are widely used in fields and products such as industrial control, communications, automobiles, and consumer electronics. The master-slave serial bus is a bus shared by multiple devices or units in a product or system, and multiple slave devices (or units) are monitored and controlled by one master device (or unit). Each slave device (unit) has its own core processing unit, which can run independently and complete the same or different functions. [0003] Due to the sharing of a bus, each slave device must have its own unique address in order to achieve normal communication functions, and the acquisition of the slave device's own address is particularly important. There are currently the following methods for sett...

AI Technical Summary

Problems solved by technology

In this way, the production in the system is more cumbersome, and the interface between the slave device and the system will also be complicated

[0007] Each slave device has its own address line connected to the master device, and the slave device is gated through the address line; this may cause a lot of address lines at the master device, which is not suitable for systems with more slave devices

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