CN101488943B - Method for data transmission by wireless communication module - Google Patents
Method for data transmission by wireless communication module Download PDFInfo
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- CN101488943B CN101488943B CN2008100326621A CN200810032662A CN101488943B CN 101488943 B CN101488943 B CN 101488943B CN 2008100326621 A CN2008100326621 A CN 2008100326621A CN 200810032662 A CN200810032662 A CN 200810032662A CN 101488943 B CN101488943 B CN 101488943B
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Abstract
A wireless communication module data transmission method comprises following steps: 1) a wireless communication module connecting a GPRS network, detecting whether a serial port enters a state of data channel; 2) the wireless communication module configuring a data channel parameter under the state of data channel; 3) the wireless communication module using a serial port pin to judge whether a prior asynchronous event arrives in the data transmission process under the state of data channel, if so, then switching to the process of preferentially processing the asynchronous event; 4) when finishing the data transmission, the wireless communication module switching to a state of command channel, at the same time, disconnecting the GPRS connection and stopping the data transmission. The wireless communication module of this invention provides two data transmission channels, each of which processes different functions, respectively, thereby realizing the high reliability, stability and real-time of the data transmission, and with excellent error processing method.
Description
Technical field
The present invention relates to a kind of method of wireless communication module transfer of data, particularly relate to wireless communication module data in real time transparent transmission.
Background technology
Along with the global mobile communication technology rapid development, the wireless communication module data transmission service has been applied to every field now, as electricity meter-reading, monitoring of environment, the monitoring of industrial or agricultural letter feelings, vehicle monitoring management etc.Yet, though the data transmission service of traditional wireless communication module provides data-transformation facility, order data and the same passage of non-order data sharing during owing to transfer of data, thereby reliability of data transmission and poor stability, ageing hysteresis.And receive data and for example send a telegram here, come after the note isopreference asynchronous event, serial ports output will be disturbed the correct reading of data of MCU (microprocessor), send data simultaneously and also can have similar problem.If module is made mistakes, there is uncontrollable possibility in interval and the number of times that retransmits of makeing mistakes, and cumulative retransmission mechanism also may lose efficacy.
Summary of the invention
The method that the purpose of this invention is to provide the transmission of the real-time transparent data of a kind of wireless communication module, the data-transformation facility of the wireless communication module that this method realizes have reliably, stable, real-time and good characteristics such as error handling processing mechanism.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of wireless communication module transfer of data, its characteristics are that it may further comprise the steps:
1) wireless communication module connects GPRS network, detects serial ports and whether can enter state of data channel;
2) if can enter state of data channel, then go forward side by side line data transmission of configuration data channel parameters, otherwise, enter the command channel state;
3) in the data transmission procedure, utilize serial port pin to judge whether that preferential asynchronous event arrives, if having, then switches to priority treatment asynchronous event flow process under the state of command channel;
4), judge whether that then transfer of data finishes if there is not the priority treatment asynchronous event.If then wireless communication module switches back under the state of command channel, disconnect connection simultaneously, stop transfer of data; Otherwise, continue transfer of data.
Wherein, the priority treatment asynchronous event flow process in this step 3) may further comprise the steps:
1) this wireless communication module switches to the command channel state from state of data channel, handles this asynchronous event;
2) handle this asynchronous event after, from the order channel status switches back state of data channel, and the continuation transfer of data.
Wherein, this asynchronous event comprises and calls or come note etc. to need the thing of priority treatment.
Wherein, this configuration data channel parameters comprises the length and the transmission frequency of configuration data bag, regularly fixed length transmission, and packet is at the number of retransmissions of makeing mistakes of protocol layer.
Positive progressive effect of the present invention is: wireless communication module provides two kinds of data transmission channels, and each passage is handled different functions respectively.Thereby realized high reliability, stability and the real-time of transfer of data, and had good error handling processing mechanism.
Description of drawings
Fig. 1 is the flow chart of wireless communication module data in real time transparent transmission of the present invention.
Fig. 2 is the flow chart of wireless communication module priority treatment asynchronous event of the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Wireless communication module of the present invention provides two kinds of data transmission channels, comprises command channel and data channel.The command channel is the general passage of wireless communication module, can normally use various operations as coming note etc. under this passage; Data channel is the designated lane that module realizes real-time transparent data transmission, the serial ports that detects module as MCU is under the state of data channel, all serial ports outputs are as the data that receive packet under this channel status, and the serial ports input is as the data that send packet.
As shown in Figure 1, this figure is the flow chart of wireless communication module data in real time transparent transmission, this figure has realized GPRS (General Packet Radio Service, GPRS) connection and disconnection, come the processing of asynchronous events such as note, the mutual switching of two kinds of transmission channels of module, the functions such as parameter configuration under the state of data channel.
Step 101, when wireless communication module initiatively or passive set up GPRS and connect after, detect serial ports and whether can enter under the state of data channel and move.
Step 102, module under the data channel pattern, length and transmission frequency that can the configuration data bag, regularly fixed length transmission, and can configuration data wrap in the number of retransmissions of makeing mistakes of protocol layer.
Step 103, module is under data channel in the data transmission procedure, utilize serial port pin to judge whether that incoming call or note isopreference asynchronous event arrive, and can switch under the state of step 106 command channel the priority treatment note of sending a telegram here at any time, module can be switched back under the state of data channel and continue transfer of data after the asynchronous event of finishing dealing with.
After the transmission of step 104 module data was finished, module can be switched back under the state of command channel, and execution in step 105 disconnects GPRS and connects, and stops data-transformation facility; Otherwise, continue step 103 and carry out transfer of data.
As shown in Figure 2, this figure switches after the wireless communication module priority treatment asynchronous event to get back to the flow chart of data channel.This figure can gain state of data channel in command channel state incision.
Idiographic flow is as follows:
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (3)
1. the method for a wireless communication module transfer of data is characterized in that, it may further comprise the steps:
1) wireless communication module connects GPRS network, detects serial ports and whether can enter state of data channel;
2) if can enter state of data channel, then go forward side by side line data transmission of configuration data channel parameters, otherwise, enter the command channel state;
3) in the data transmission procedure, utilize serial port pin to judge whether that preferential asynchronous event arrives, if having, then switches to priority treatment asynchronous event flow process;
4) after transfer of data was finished, this wireless communication module switched back under the state of command channel, disconnected GPRS network simultaneously and connected, and stopped transfer of data;
Wherein the priority treatment asynchronous event flow process in the step 3) may further comprise the steps:
(1) this wireless communication module switches to the command channel state from state of data channel, handles this asynchronous event;
(2) handle this asynchronous event after, switch back state of data channel from this command channel state, and continue transfer of data.
2. the method for wireless communication module transfer of data according to claim 1 is characterized in that,
This asynchronous event comprises calls or comes note.
3. according to the method for each described wireless communication module transfer of data of claim 1-2, it is characterized in that, described configuration data channel parameters comprises the length and the transmission frequency of configuration data bag, regularly fixed length transmission, and packet is at the number of retransmissions of makeing mistakes of protocol layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100326621A CN101488943B (en) | 2008-01-15 | 2008-01-15 | Method for data transmission by wireless communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100326621A CN101488943B (en) | 2008-01-15 | 2008-01-15 | Method for data transmission by wireless communication module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101488943A CN101488943A (en) | 2009-07-22 |
| CN101488943B true CN101488943B (en) | 2011-12-21 |
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| CN2008100326621A Expired - Fee Related CN101488943B (en) | 2008-01-15 | 2008-01-15 | Method for data transmission by wireless communication module |
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Effective date of registration: 20160223 Address after: 200000 Shanghai city Changning District Admiralty Road No. 633 building A Room 201 Patentee after: SIMCOM WIRELESS SOLUTIONS Ltd. Address before: 200051 2683-K room, building B, 100 Zunyi Road, Shanghai, Changning District Patentee before: Shanghai SIMCom Ltd. |
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Effective date of registration: 20200206 Address after: 201201 room 606-a, building a, 3000 Longdong Avenue, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: LONGSUNG TECHNOLOGY (SHANGHAI) CO.,LTD. Address before: 200000 Shanghai city Changning District Admiralty Road No. 633 building A Room 201 Patentee before: SIMCOM WIRELESS SOLUTIONS Ltd. |
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