CN201146523Y - A Remote Upgrade Device for ARM Embedded Terminal Based on GPRS Network - Google Patents

Abstract

The utility model relates to an ARM embedded terminal remote upgrading device based on a GPRS network. The device is composed of the main control chip ARM, GPRS Modem, and the RS-232 bus connecting the two modules. The Flash memory inside the ARM is divided into the startup area that stores the code for system initialization and startup, the user code jump area that stores instructions to jump to the corresponding user code area, and the user code area that stores the user code currently being executed by the ARM embedded terminal. Code 1 area and user code area 2 for storing remote upgrade data received by GPRS Modem through IAP. The format of the upgrade data block received by the GPRS Modem is divided into the upgrade data block ID area, the data area of the upgrade data block, and the check area of the upgrade data block. This device utilizes ARM's own Flash resources, without manual on-site upgrade processing, etc., and realizes remote software upgrades for ARM embedded terminals, reducing system costs and engineering complexity. With breakpoint resume function, shorten the upgrade time.

Description

A Remote Upgrade Device for ARM Embedded Terminal Based on GPRS Network

technical field

The utility model relates to an upgrade device for an embedded terminal, in particular to a remote upgrade device for an ARM embedded terminal based on a GPRS network.

Background technique

Domestic embedded systems have been widely used in fields such as industry, communication, and information appliances, and have penetrated into other industries. With the continuous emergence of new technologies and the continuous improvement of system functions and performance requirements, users must be able to upgrade the system according to changes in customer needs, so as to prolong the service life of the system, enhance the applicability of the system, and improve system performance. The traditional embedded system upgrade method usually requires maintenance personnel to arrive at the device site, rewrite or replace the Flash out of the box. When the number of devices is large and distributed in different locations, the upgrade and maintenance process will be cumbersome, costly, and take a long time. . However, the remote online upgrade of the system software using the field terminal of the distributed monitoring system has defects such as long upgrade time, interruption of the upgrade process and unsuccessful upgrade. If can construct a kind of device effectively, transmit relevant upgrade program code through GPRS network, realize remote wireless upgrade, will effectively solve the above-mentioned problem.

Contents of the invention

The purpose of the utility model is to transmit the ARM upgrade program code through the GPRS network, utilize the system in-application programming (hereinafter referred to as IAP) of the ARM and its internal Flash memory to realize the remote wireless upgrade of the ARM embedded terminal.

For reaching the purpose of the present utility model, the technical scheme that adopts is: device comprises main control chip ARM and GPRS Modem function module, and connects the RS-232 bus line between two function modules; The memory is divided into four parts: startup area, user code jump area, user code 1 area and user code 2 area, and the format of the upgrade data block received by GPRS Modem is divided into upgrade data block ID area, upgrade data block data area, Upgrade the checksum area of the data block.

The startup area described in the utility model stores codes for system initialization and startup.

Instructions for jumping to corresponding user code areas are stored in the user code jump area described in the utility model.

In the user code 1 area and the user code 2 area described in the utility model, the user code 1 area is used to store the user code currently being executed by the ARM embedded terminal, and the user code 2 area is used to store the data received by the GPRS Modem through the IAP. Update data remotely. After the upgrade data is received, modify the instruction in the user code jump area through the IAP to make the ARM embedded terminal run the new upgrade code. The upgrade data is transmitted in blocks, and each small piece of data is numbered. The main control chip ARM saves the number of the last piece of upgrade data that has been successfully received, realizing the function of resuming transmission from breakpoints.

The beneficial effect of adopting the technical solution of the present invention is: through the GPRS network, the remote software upgrade to the ARM embedded terminal is realized, the flash resource of the main control chip ARM itself is fully utilized, no external expansion of RAM or EEPROM chip is required, no manual on-site upgrade is required, and the It reduces system cost and engineering complexity, and reduces the cost of on-site upgrades. The upgrade time can be shortened by using the function of resuming upload from breakpoints, so as to avoid unsuccessful upgrades caused by interrupted upgrades.

Description of drawings

Fig. 1 is the device block diagram described in the utility model.

Fig. 2 is the division method of ARM internal Flash described in the utility model.

Fig. 3 is the format of the upgrade data block received by GPRS described in the utility model.

Fig. 4 is a flow chart of the remote upgrade process of the ARM embedded terminal based on the GPRS network described in the present invention.

In Fig. 1, 101 is the main control chip ARM of the terminal, 103 is the GPRS Modem, and 102 is the RS-232 bus connecting the two parts of ARM 101 and GPRS Modem 103 for communication.

In Fig. 2, 201 is a starting area, 202 is a user code jump area, 203 is a user code 1 area, and 204 is a user code 2 area.

In FIG. 3 , 401 is an upgrade data block ID, 402 is a data part of an upgrade data block, and 403 is a verification of an upgrade data block.

Detailed ways

For a clearer understanding of the utility model, further description will be given below in conjunction with the accompanying drawings.

According to main control chip ARM (101) described in accompanying drawing 1 and two functional modules of GPRS Modem (103), connect by RS-232 (102) bus line.

According to the mode described in accompanying drawing 2, the flash memory inside main control chip ARM (101) is divided into start area (201), user code jump area (202), user code 1 area (203) and user code 2 area (204) Four parts.

According to the mode described in accompanying drawing 3, the format of the upgrade data block that GPRS Modem (103) receives is divided into the check area of upgrade data block ID area (401), the data area (402) of upgrade data block, the upgrade data block (403).

Use the following steps when upgrading:

Step 301: The main control chip ARM (101) receives the upgrade data sent by the GPRS Modem (103).

Step 302: Judging whether the ID of the received upgrade data block is the expected ID, if yes, go to 303, otherwise go to 311.

Step 303: Judging whether the current program is running in user code 1 area (203), if so, go to 304, otherwise go to 305.

Step 304: The main control chip ARM saves the upgrade data block to the user code 2 area through the IAP (204).

Step 305: The main control chip ARM saves the upgrade data block to the user code 1 area through the IAP (203).

Step 306 : Determine whether all the upgrade data has been received, if so, go to 307 , otherwise, go to 310 .

Step 307: Modify the instructions in the user code jump area (202) through the IAP, so that the transfer instructions point to the new upgrade program.

Step 308: Clear the expected received upgrade data block ID to prepare for the next upgrade.

Step 309: Reset the main control chip ARM (101), and execute a new upgrade program.

Step 310: Add 1 to the expected received upgrade data block ID.

Step 311: send the upgrade data block ID that expects to receive by GPRS Modem (103), as return response data.

Step 312: the process exits.

Claims (4)

1, a kind of ARM built-in terminal remote upgrade device based on GPRS network, it is characterized in that device by main control chip ARM, GPRS Modem module and connect two RS-232 buses between the module and constitute, wherein: the Flash memory of main control chip ARM inside is divided into promoter region, personal code work redirect district, personal code work 1 district and personal code work 2 districts; The form of GPRS Modem upgrade data piece is divided into the data field of upgrade data piece ID district, upgrade data piece, the check field of upgrade data piece.

2, according to the described a kind of ARM built-in terminal remote upgrade device based on GPRS network of claim 1, what it is characterized in that described promoter region deposits is the code of system initialization and startup.

3, according to the described a kind of ARM built-in terminal remote upgrade device of claim 1, it is characterized in that described personal code work 1 district is used for depositing the personal code work that current ARM built-in terminal is being carried out based on GPRS network.

4, according to the described a kind of ARM built-in terminal remote upgrade device of claim 1, it is characterized in that described personal code work 2 districts are used for depositing the data of upgrading based on GPRS network.

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