CN104615223A - Resetting method of GSM (Global System of Mobile Communication) module - Google Patents

Abstract

The invention discloses a resetting method of a GSM (Global System of Mobile Communication) module. The resetting method comprises the following steps: S1) the GSM module receives a resetting instruction; S2) the GSM module stores multiple pieces of resetting transferring data to an SRAM (Static Random Access Memory); S3) the GSM module is restarted, the SRAM is initialized, and all pieces of data, except the resetting transferring data, in the SRAM are cleared; S4) the GSM module reads the resetting transferring data stored in the SRAM; and S5) the GSM module is operated. Through a way that the resetting transferring data is read during startup after the SRAM is used for replacing a FLASH or an EEPROM (Electrically Erasable Programmable Read-Only Memory) to write the resetting transferring data into the SRAM, the resetting time is shortened, and the cost is lowered.

Description

The repositioning method of gsm module

Technical field

The present invention relates to a kind of GSM(Global System of Mobile communication, global system for mobile communications) repositioning method of module.

Background technology

The Application comparison of gsm module in industry and wireless access is extensive, because application scenarios is many, production test item is also very many, wherein some test item is in PC(PC) send instruction after, specific action is performed after needing gsm module to reset, in order to these information such as specific instruction and data can be got after gsm module resets, the data that when needing these to reset, needs transmit are saved in FLASH(flash memory), EEPROM(EEPROM (Electrically Erasable Programmable Read Only Memo)) etc. in storer, due to FLASH, the Spatial General 6 R frequency of utilization of EEPROM is higher, and cost is higher, the information being used for storing production test link understands the cost of increasing device.Because the read or write speed of FLASH, EEPROM is slow, and corresponding driver will be performed just can read and write, the on time of gsm module can be increased.

Summary of the invention

The technical problem to be solved in the present invention uses FLASH, EEPROM read-write reset transmission data to cause the defect that the on time is long, equipment cost is excessive that resets to overcome in prior art, there is provided a kind of cost less, the repositioning method of reset speed gsm module faster.

The present invention solves above-mentioned technical matters by following technical proposals:

A repositioning method for gsm module, its feature is, includes following steps:

S1, described gsm module receive a reset instruction;

S2, described gsm module store some resets and transmit data to SRAM(static RAM); Herein, SRAM is positioned at baseband chip inside, and not needing increases extra cost, and the read or write speed of SRAM is higher than FLASH and EEPROM.

S3, restart described gsm module, SRAM described in initialization also removes all data in described SRAM except the described transmission data that reset;

S4, described gsm module read the described reset stored in described SRAM and transmit data; Herein, because SRAM uses less when starting, and read or write speed is fast, is better than selecting FLASH and EEPROM to store reset and transmits data.

S5, run described gsm module.

Preferably, be provided with one in described SRAM and transmit data storage area for storing the described reset of transmitting data that resets; That is, from the storage areas such as the RW/ZI in SRAM, mark a part and transmit data storage area as resetting, generally divide in SRAM afterbody.

Described S3 is: restart described gsm module, SRAM described in initialization the data removed in the whole subregions in described SRAM except the described transmission data storage area that resets.

Preferably, also include after described S3:

Whether S31, the reset judged in described reset transmission data storage area are transmitted data and can be used, if then perform S4, then perform S5 if not.

Preferably, also include between described S2 and described S3:

S21, record described reset and transmit the opening flag of data, data length, end mark be stored to described resets transmission data storage area;

Described S31 for: judge that whether the opening flag that data are transmitted in the described reset of transmitting in data storage area that resets consistent with recorded opening flag, if then perform S32, then perform S5 if not;

S32, judge that whether the data length that data are transmitted in the described reset of transmitting in data storage area that resets is consistent with recorded data length, if then perform S33, then perform S5 if not;

S33, judge that whether the end mark that data are transmitted in the described reset of transmitting in data storage area that resets is consistent with recorded end mark, if then perform S4, then perform S5 if not.

Preferably, described S21 is: the opening flag setting described reset transmission data is 0xDADADADA, data length is 1 ~ 65535 byte, end mark is 0xADADADAD and is stored to described reset to transmit data storage area; That is, before reset transmission data, leave 4 bytes deposits as the 0xDADADADA of opening flag, 4 byte 1 ~ 65535 bytes deposited as data length, transmits after data leave 4 bytes for depositing the 0xADADADAD as end mark in reset.

Described S31 is: judge whether the opening flag that data are transmitted in the described reset of transmitting in data storage area that resets is 0xDADADADA, if then perform S32, then performs S5 if not;

S32, judge whether the data length that data are transmitted in the described reset of transmitting in data storage area that resets is 1 ~ 65535 byte, if then perform S33, then performs S5 if not;

S33, judge whether the end mark that data are transmitted in the described reset of transmitting in data storage area that resets is 0xADADADAD, if then perform S4, then performs S5 if not.

Positive progressive effect of the present invention is: by use SRAM replace FLASH or EEPROM before reset by reset transmit data write SRAM again start time read mode, shorten reset time, and reduce cost.

Accompanying drawing explanation

Fig. 1 is the process flow diagram of the repositioning method of the gsm module of present pre-ferred embodiments.

Embodiment

Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.

Fig. 1 is the process flow diagram of the repositioning method of the gsm module of the present embodiment, as shown in Figure 1, in the gsm module that the present embodiment relates to, SRAM(is not shown) in be provided with one and transmit data storage area (not shown) for storing the reset of transmitting data that resets, and the repositioning method of gsm module includes following steps:

Step 1, gsm module receive a reset instruction;

Step 2, gsm module store some resets and transmit data to SRAM;

Step 21, reset transmit that the opening flag of data is 0xDADADADA, data length is 1 ~ 65535 byte, end mark is 0xADADADAD and are stored to reset and transmit data storage area;

Step 3, restart gsm module, initialization SRAM the data removed in the whole subregions in SRAM except the transmission data storage area that resets.

Whether the opening flag that step 31, the reset of transmitting in data storage area that judges to reset transmit data is 0xDADADADA, if then perform step 32, then performs step 5 if not;

Whether the data length that step 32, the reset of transmitting in data storage area that judges to reset transmit data is 1 ~ 65535 byte, if then perform step 33, then performs step 5 if not;

Whether the end mark that step 33, the reset of transmitting in data storage area that judges to reset transmit data is 0xADADADAD, if then perform step 4, then performs step 5 if not.

Step 4, gsm module read the reset stored in SRAM and transmit data;

Step 5, operation gsm module.

Wherein, dividing resets transmits data storage area, is embodied in: by the afterbody of SRAM, and namely the 0xADADADAD of 4 bytes of the end address of SRAM is defined as to reset and transmits the end mark of data; Reserving to transmit in reset to leave before data while 4 bytes deposit the 0xDADADADA as opening flag, using the end address of 0xDADADADA as storage areas such as RW/ZI in SRAM; Reserve 4 bytes, 1 ~ 65535 byte deposited as data length again

Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make numerous variations to these embodiments, but these change and amendment all falls into protection scope of the present invention.

Claims (5)

1. a repositioning method for gsm module, is characterized in that, includes following steps:

S1, described gsm module receive a reset instruction;

S2, described gsm module store some resets and transmit data to SRAM;

S3, restart described gsm module, SRAM described in initialization also removes all data in described SRAM except the described transmission data that reset;

S4, described gsm module read the described reset stored in described SRAM and transmit data;

S5, run described gsm module.

2. the repositioning method of gsm module as claimed in claim 1, is characterized in that, is provided with one and transmits data storage area for storing the described reset of transmitting data that resets in described SRAM;

Described S3 is: restart described gsm module, SRAM described in initialization the data removed in the whole subregions in described SRAM except the described transmission data storage area that resets.

3. the repositioning method of gsm module as claimed in claim 2, is characterized in that, also include after described S3:

Whether S31, the reset judged in described reset transmission data storage area are transmitted data and can be used, if then perform S4, then perform S5 if not.

4. the repositioning method of gsm module as claimed in claim 3, is characterized in that, also include between described S2 and described S3:

S21, record described reset and transmit the opening flag of data, data length, end mark be stored to described resets transmission data storage area;

Described S31 for: judge that whether the opening flag that data are transmitted in the described reset of transmitting in data storage area that resets consistent with recorded opening flag, if then perform S32, then perform S5 if not;

S32, judge that whether the data length that data are transmitted in the described reset of transmitting in data storage area that resets is consistent with recorded data length, if then perform S33, then perform S5 if not;

S33, judge that whether the end mark that data are transmitted in the described reset of transmitting in data storage area that resets is consistent with recorded end mark, if then perform S4, then perform S5 if not.

5. the repositioning method of gsm module as claimed in claim 4, it is characterized in that, described S21 is: the opening flag setting described reset transmission data is 0xDADADADA, data length is 1 ~ 65535 byte, end mark is 0xADADADAD and is stored to described reset to transmit data storage area;

Described S31 is: judge whether the opening flag that data are transmitted in the described reset of transmitting in data storage area that resets is 0xDADADADA, if then perform S32, then performs S5 if not;

S32, judge whether the data length that data are transmitted in the described reset of transmitting in data storage area that resets is 1 ~ 65535 byte, if then perform S33, then performs S5 if not;

S33, judge whether the end mark that data are transmitted in the described reset of transmitting in data storage area that resets is 0xADADADAD, if then perform S4, then performs S5 if not.