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Control method and device based on BISS-C and communication system

A communication interface and module control technology, applied in the field of communication, can solve the problems of limited selection, high MCU resource occupancy, and high cost

Active Publication Date: 2020-05-15
常州节卡智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of FPGA or dedicated BISS-C chip will lead to a higher cost of the entire communication solution
In some other schemes, the input and output (IO) ports of the Microcontroller Unit (MCU) are used to

Method used

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  • Control method and device based on BISS-C and communication system
  • Control method and device based on BISS-C and communication system
  • Control method and device based on BISS-C and communication system

Examples

Experimental program
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Effect test

no. 1 example

[0044] The embodiment of this application provides a communication system, such as figure 2 As shown, in the communication system, it includes: a master chip 10 and a communication interface 20, the communication interface 20 can be connected to at least one slave device 30, and the master chip 10 performs BISS-C with the slave device 30 through the communication interface 20 communication. Wherein, the master chip 10 includes: a direct memory access (Direct Memory Access, DMA) module 11 , a pulse width modulation (Pulse Width Modulation, PWM) module 12 and a serial peripheral interface (Serial Peripheral Interface, SPI) module 13 . The PWM module 12 includes a first PWM module and a second PWM module. Master station chip 10 can be existing processing chip with DMA module, PWM module and SPI module, including but not limited to digital signal processing (Digital Signal Processor, DSP) chip or single-chip microcomputer, for example model is the single-chip microcomputer chip ...

no. 2 example

[0074] This embodiment provides a communication system, which is different from the first embodiment in that: the first embodiment uses PWM2 to implement the MO function, while this embodiment uses the MISO of the SPI module to implement the MO function. In this communication system, the master station chip only includes one PWM output, and the other PWM output is replaced by an SPI module. A specific connection diagram of the communication system under the point-to-point network is as follows: Image 6 shown. The MISO end of the SPI module is connected with the second logical data input end (2D) of the communication interface, the MOSI end of the SPI module is connected with the first logical data output end (1R) of the communication interface, and other connection relations are consistent with the first embodiment.

[0075] In this embodiment, PWM1 corresponds to the MA function of BISS-C, SPI_MISO corresponds to the MO function of BISS-C, and SPI_MOSI corresponds to the SL...

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Abstract

The invention provides a control method and device based on BISS-C and a communication system. The control method is applied to a main station chip. The method comprises the steps of controlling a first PWM module to output square wave signals to a first logic data input end of a communication interface and a clock end of an SPI module through a pre-configured DMA module, and controlling a secondPWM module to output level signals with preset changes to the second logic data input end of the communication interface; and receiving a data signal sent by the first logic data output end of the communication interface through the MISO end of the SPI module. Two-way communication of the BISS-C protocol can be realized with low cost and high efficiency, occupation of MCU resources can be reducedto the greatest extent, and the method is applicable to most of MCU chips at present, high in universality and high in transportability.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular, to a BISS-C-based control method, device and communication system. Background technique [0002] BISS communication protocol is a full-duplex synchronous serial bus communication protocol, which is specially designed for real-time, two-way, high-speed sensor communication. The current version of the BISS communication protocol is BISS-C. In the servo system, most encoders use the BISS-C protocol. In the BISS-C protocol, the communication parties are the master station and the slave station respectively, the encoder acts as the slave station, and the servo drive or motion controller acts as the master station, and the master station reads the position information collected by the encoder through the BISS-C protocol. The BISS-C protocol is divided into two communication modes: sensor mode and register mode. In the sensor mode, the master station can only read the...

Claims

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Application Information

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IPC IPC(8): H04L12/403H04L12/40
CPCH04L12/403H04L12/40202
Inventor 李明洋
Owner 常州节卡智能装备有限公司