CN207965547U - A kind of RSU devices that can automatically control ARM Starting mode - Google Patents

Abstract

The utility model discloses a kind of RSU devices that can automatically control ARM Starting mode, which is characterized in that including arm processor module, FPGA module, encryption/decryption module, power module can pass through serial ports, network interface or optical fiber and external device communication.Arm processor is communicated by EIM bus interface and FPGA, and the ARM reserves multiple programs programming interface, including SD card, OTG, USB.ARM is started pin by control circuit and is arranged to varying level state by FPGA, is achieved the purpose that different Starting mode, so as to realize more easily program burn writing, post facility is facilitated to safeguard.

Description

A kind of RSU devices that can automatically control ARM Starting mode

Technical field

The utility model belongs to the fields ETC, is related to the fields ETC RSU controllers.

Background technology

ARM cores piece is widely used general in high performance embedded system design, and RSU controllers are as in RSU systems Important equipment uses high performance arm processor mostly, such as Cortex-A8, Cortex-A9 series processors, operation Linux system.

For arm processor in programming program, there are many modes, such as pass through SD card, OTG interfaces etc..Typically in circuit One mechanical switch, manual setting Starting mode are set on plate.For some special equipments, such as RSU controllers, cannot incite somebody to action Starting switch is naked to be exposed on the external, and prevents from accidentally touching.This brings later maintenance certain difficulty, when need update kernel program When, it is necessary to device housings are opened, the time is not only expended, and easily cause equipment damage.Mechanical switch can not also expire The long-range newer demand of foot.

Utility model content

In view of the above problems, the utility model provides a kind of device that can automatically control ARM Starting mode.Its feature exists In, including arm processor module, FPGA module, control circuit, encryption/decryption module, pass through 422 interfaces, serial ports, network interface and light Fine interface and external device are communicated.

It is communicated by EIM interfaces between the arm processor module and FPGA module.

Control circuit starts the level state of controlling switch for changing arm processor.

FPGA module and encryption/decryption module communication.

The ARM Starting mode, which is characterized in that including EMMC, SD card, OTG, USB, external flash.

The control circuit, which is characterized in that the circuit being made of triode or relay；Control circuit input signal by FPGA is generated, and output starts configuration pin with ARM and connects.

The encryption/decryption module, which is characterized in that be PSAM cards.

The external device, which is characterized in that using 422 interfaces and optical fiber interface and RSU antenna communications, using serial ports and Network interface is communicated with host computer.

Realize automatically controlling for arm processor Starting mode so that equipment later maintenance is more convenient, is set without contact In the case of standby, flexibly upgrading can be updated using program burn writing interface.

Description of the drawings

Fig. 1 is a kind of functional block diagram of embodiment of the utility model.

A kind of schematic diagram of Fig. 2 realization methods of circuit (102) in order to control.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Fig. 1 show a kind of functional block diagram of embodiment of the utility model, including following several modules：Arm processor Module (100), FPGA module (101), control circuit (102), industrial personal computer (104), RSU antennas (105).

Arm processor module (100) and FPGA module (101) are communicated by EIM buses.Encryption/decryption module (103) It connects with FPGA module (101), is made of 6 road PSAM card circuits.Control circuit (102) is made of transistor circuit, control terminal From FPGA module (101), output end connects ARM and starts pin.FPGA module (101) drive 422 interfaces and optical fiber interface and RSU antennas (105) communicate.Arm processor module (100) can be communicated by serial ports and kilomega network and industrial personal computer (104), and be wrapped Include SD card interface, OTG interfaces, USB, interface and hard-disk interface.FPGA (101) is communicated by serial ports and industrial personal computer (104).

In the described embodiment, FPGA (101) pin levels and arm processor (100) pin level are incompatible, so not It can be directly connected to, need to be matched using triode.

As shown in Figure 1, FPGA (101) and industrial personal computer (104) can communicate, and when needing to carry out program burn writing, work Control machine (104) sends programming program instruction to FPGA (101) and is controlled by corresponding pin after FPGA (101) receives instruction Triode saturation conduction and shutdown so that the pin that starts of arm processor is in the level state needed.

After control circuit (102) state switches, FPGA (101) resets arm processor, arm processor (100) enter program burn writing state after resetting, can carry out programming, including SD card in several ways at this time, USB, OTG, with And hard disk.

After programming, industrial personal computer (104) sends program burn writing to FPGA (101) and finishes instruction, and FPGA (101) is received After instruction, arm processor (100) Starting mode is configured to by normal activation state by control circuit (102).Then to ARM Processor (100) carries out reset operation again, you can completes the update of program.

All operations are all held in industrial personal computer (104) and are completed, and cooperation host computer can accomplish that a key is arranged.

The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not It is confined to this, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality Novel technical solution and its design is subject to equivalent substitution or change, should be covered within the scope of the utility model.

Claims (5)

1. a kind of RSU devices that can automatically control ARM Starting mode, which is characterized in that including arm processor module, FPGA Module, control circuit, encryption/decryption module, external communication interface；

It is communicated by EIM interfaces between the arm processor module and FPGA module；

Control circuit starts the level state of controlling switch for changing arm processor；

FPGA module is used for and encryption/decryption module communication.

2. RSU devices according to claim 1, which is characterized in that the ARM Starting mode includes EMMC, SD card, OTG, USB, external flash.

3. RSU devices according to claim 1, which is characterized in that the control circuit includes triode or relay.

4. RSU devices according to claim 1, which is characterized in that the encryption/decryption module is PSAM cards.

5. RSU devices according to claim 1, which is characterized in that external device using 422 interfaces and optical fiber interface with RSU antenna communications, are communicated using serial ports and network interface with host computer.