method for high-speed communication between ARM and FPGA based on high-resolution ink-jet printer

Abstract

The invention relates to a method for high-speed communication between an ARM and an FPGA based on a high-resolution ink-jet printer. The method comprises the steps that an upper computer main controlCPU enables jet printing data and a command to be transmitted to a header module through a bus, and the header module enables the data to be divided into four corresponding lower computer data and tobe transmitted to a USB of each lower computer; in a lower computer, an FPGA (Field Programmable Gate Array) is directly connected with a USB (Universal Serial Bus) chip and an SRAM (Static Random Access Memory) storage chip, and the FPGA directly stores data sent by a USB into an SRAM to wait for jet printing; a USB bus of the upper computer is in two-way communication control with the spray head single chip microcomputer, reads data of the spray head FPGA in a one-way mode, sends spray printing data to the spray head FPGA in a one-way mode, and sends control data to the spray head FPGA in aone-way mode. The technical scheme of the invention has the technical effect of high-speed communication between the ARM and the FPGA.

Description

technical field [0001] The invention relates to the technical field of inkjet printers, in particular to a high-speed communication method based on a high-resolution inkjet printer ARM and FPGA. Background technique [0002] Compared with the traditional CIJ inkjet printer, the high-resolution inkjet printer has a clearer printing effect and faster printing speed. Therefore, the high-resolution inkjet printer needs a larger amount of communication data, and requires faster data transmission. [0003] At present, the communication control schemes between the upper computer and the lower computer of the inkjet printer include: high-speed CPU, DSP (digital signal processor, digital signal processor), CPLD (Complex Programmable Logic Device, complex programmable logic device) and FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), where the high-speed CPU and DSP control has the disadvantage of high cost, and because of its serial instruction characteristics, w...

AI Technical Summary

Problems solved by technology

[0003]At present, the communication control schemes between the upper computer and the lower computer of the inkjet printer include: high-speed CPU, DSP (digital signal processor, digital signal processor), CPLD (Complex Programmable Logic Device, complex programmable logic device) and FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), in which the use of high-speed CPU and DSP control has the disadvantage of high cost, and due to its serial instruction characteristics, when the production line speed When it is relatively high, the printing control of the inkjet printer often cannot keep up with the change of the production line speed in real time, resulting in problems such as missed spraying and intermittent; although the CPLD control supports parallel processing, because it is control-intensive, there is no operation inside the chip. The memory of the data buffer, so an external memory is required, resulting in increased cost, complicated circuit, and increased body size

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