A single bus communication method and system

Abstract

The invention discloses a unibus communication method and system. A search step comprises the following substeps: a host successively sends a reset signal search command to slaves; the current bit and the complement thereof of the identifier identification code, which is returned from each slave, of each slave is read; the host generates an appointed bit according to the current bit and the complement thereof of the identifier identification code which is returned from each slave, and sends the appointed bit to each slave; each slave continuously participates in a search process when each slave judges that a next bit of the current bit of the identifier identification code of each slave is matched with the appointed bit, and otherwise, each slave enters a wait state; the host sends a command to all slaves until only one slave does not enter the wait state, wherein the command is that the next bit and the complement of the next bit of the identifier identification code of the slave are read, and the host reads and records all bit values of the identifier identification code of the slave which does not enter the wait state; and the above steps are repeated until the host records the identifier identification codes of all slaves. The unibus communication method and system has the advantages of being high in communication efficiency and accurate in communication.

Description

technical field [0001] The present application relates to the communication field, in particular to a single-bus communication method and system. Background technique [0002] Bus technology is an important technology for communication between chips or devices. Compared with point-to-point communication technology, bus communication can effectively reduce the complexity of the connection and improve the utilization rate of the connection. The existing bus can be divided into serial bus and parallel bus according to the way of data transmission. At present, the common serial bus includes SPI, I2C, USB, IEEE1394, RS232, CAN, etc., while the parallel bus has relatively few types. Common ones such as IEEE1284, ISA, PCI, etc. However, whether it is a serial bus or a parallel bus, bus communication requires the support of multiple communication lines, which will bring difficulties to the circuit design where I / O port resources are very precious, so single-bus communication techno...

AI Technical Summary

Problems solved by technology

However, whether it is a serial bus or a parallel bus, bus communication requires the support of multiple communication lines, which will bring difficulties to the circuit design where I / O port resources are very precious, so single-bus communication technology emerges as the times require

Images