Method and device for allocating fixed PCIE bus addresses according to slot positions

Abstract

The invention discloses a method and device for allocating fixed PCIE bus addresses according to slot positions. The method comprises the following steps: allocating corresponding fixed PCIE addresses to each slot position of a PCIE bus backboard in advance; setting each slot position of the PCIE bus backboard and the port number of the PCIE bus switch to be in a one-to-one correspondence relationship; and when the PCIE child node board card is hooked in the slot position of the PCIE bus backboard and the PCIE main node board card is started or the PCIE child node board card is hooked again, enabling the PCIE main node board card to perform corresponding PCIE address configuration on the PCIE child node board card according to the slot position where the PCIE child node board card is located. According to the method and the device, through specific hardware and software design, the fixed PCIE bus address distribution of the PCIE daughter board according to the slot position is realized, the design requirements of most electric power system control protection devices and industrial control devices are met, and the popularization of the PCIE bus technology in the fields of industry, electric power and the like is facilitated.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a method and a device for assigning fixed PCIE bus addresses according to slots. Background technique [0002] PCIE, short for baiperipheral component interconnect express, is a high-speed serial computer expansion bus standard. PCIE belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission, and the connected devices allocate exclusive channel bandwidth and do not share bus bandwidth. PCIE devices communicate through logical connections called interconnects or links. A link is a point-to-point communication channel between two PCI Express ports, allowing them to send and receive normal PCI requests and interrupts. [0003] With the development of industrial control equipment for high-speed data exchange and the maturity of PCIE bus technology, PCIE bus is introduced into the design of industrial control equipment as an ultra-high-speed...

AI Technical Summary

Problems solved by technology

However, some characteristics of the PCIE bus, such as device address allocation and device address addressing, are different from traditional industrial control equipment, which brings inconvenience to the programming and application of industrial control equipment.

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