Data transmission method, device, computer readable storage medium and terminal equipment

Abstract

The invention belongs to the field of computers and provides a data transmission method, device, computer-readable storage medium and terminal equipment. The method includes: configuring the relevant information of the broadband satellite modem card read-write buffer and the DMA controller channel between the broadband satellite modem card read-write buffer and the computer read-write buffer; When the driver of the card receives the write data request from the upper layer application program, the data in the first write source buffer and the second write source buffer are alternately written to the first write target buffer and the second write target buffer; When the driver of the broadband satellite modem card receives a read request from the upper application program, it alternately reads the data in the first read source buffer and the second read source buffer to the first read target buffer and the second read target buffer. Read the target buffer. The invention reduces the realization cost of the high-speed signal continuous transmission between the broadband satellite modem card and the computer terminal.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a data transmission method, device, computer-readable storage medium and terminal equipment. Background technique [0002] The broadband satellite modem card is a peripheral device installed on the computer system. On the one hand, it can complete the collection, demodulation, decoding and transmission of downlink satellite signals, and finally realize the processing of all user-oriented services on the computer system; On the one hand, it can complete the user business processing, transmission, coding, modulation and launch of uplink satellite signals. Since the broadband satellite modem card has the characteristics of fast uplink and downlink signal transmission speed and large data volume, the application of PCIe bus technology has become an inevitable choice to realize the data transmission and interaction between the broadband satellite modem card and the computer termin...

AI Technical Summary

Problems solved by technology

[0004] Considering that when performing high-speed transmission, if there is no onboard double data rate (Double Data Rate, DDR) synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory) as a buffer, the data will overflow and continuous transmission cannot be achieved. Therefore, The existing DMA method needs to add a certain capacity of hardware memory, that is, DDR particles, as a cache in the broadband satellite modem card

However, due to the high price of DDR particles, the addition of this hardware not only makes the price and cost of the system high, but also increases the difficulty of development. Therefore, the high-speed signal between the broadband satellite modem card and the computer terminal In terms of continuous transmission problems, the existing DMA method has a relatively high solution cost

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