Communication circuit and communication method among multiple arms

Abstract

The invention discloses a communication circuit among a plurality of ARMs (Acorn RISC Machine). The communication circuit comprises an ARM host machine and a plurality of ARM slave machines, wherein each ARM slave machine comprises a plurality of ARM slave machines with serial modules and a plurality of ARM slave machines without serial modules; the ARM slave machines with the serial modules are connected at any position of a serial bus; all ARM slave machines without the serial modules are connected to a serial bus through second serial modules; first serial modules, the second serial modules and the serial modules arranged on the ARM slave machines are consistent in structure; each of the first serial modules, the second serial modules and the serial modules mainly comprises a USB-TTL (universal serial bus-transistor-transistor logic) serial module serving as a control interface and a USB-TTL serial module serving as a data interface; data transmitting pins of the two USB-TTL serial modules of the second serial modules are connected with data receiving pins of the ARM slave machines without the serial modules; data receiving pins of the two USB-TTL serial modules of the second serial modules are connected with data transmitting pins of the ARM slave machines without the serial modules. The invention also discloses a communication method of the circuit. The aim of effective and reliable communication is fulfilled by the communication circuit and the communication method.

Description

technical field [0001] The invention relates to a communication circuit among multiple ARMs and a communication method thereof, belonging to the technical field of communication. Background technique [0002] At present, ARM developers are often used to equip each slave with a serial port to communicate with the host in the design of multi-single-chip communication system. This solution not only brings efficient and reliable communication, but also greatly limits the scalability of the system. When the number of slaves is large, the wiring is already very complicated. [0003] In order to solve the above-mentioned problems, serial ports are used as little as possible in the communication system now, but this also brings the following problems: 1. How do ARM slaves with the same status obtain different addresses; 2. How do ARM slaves have unique addresses? Can communicate with ARM master without interference from other ARM slaves. Contents of the invention [0004] In ord...

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Problems solved by technology

This solution not only brings efficient and reliable communication, but also greatly limits the scalability of the system. When the number of slaves is large, the wiring is already very complicated.

[0003] In order to solve the above-mentioned problems, serial ports are used as little as possible in the communication system now, but this also brings the following problems: 1. How do ARM slaves with the same status obtain different addresses; 2. How do ARM slaves have unique addresses? Can communicate with ARM master without interference from other ARM slaves

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