CN103916517B - A kind of method and apparatus realizing GSM support in Android system - Google Patents
A kind of method and apparatus realizing GSM support in Android system Download PDFInfo
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- CN103916517B CN103916517B CN201210592480.6A CN201210592480A CN103916517B CN 103916517 B CN103916517 B CN 103916517B CN 201210592480 A CN201210592480 A CN 201210592480A CN 103916517 B CN103916517 B CN 103916517B
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Abstract
The present invention proposes a kind of method realizing GSM support on Android system, and it comprises the following steps: uses pppd to service dial module startup pppd service and dials；Use monitoring modular to be used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts described service dialing；Simulating two pseudo-terminal ps0 and ps1 by analog module, one of them terminal is for AT instruction transmission, and another is for data transmission.In the Gsm module of only one of which physical serial interface, realize telephonic communication function and data linkage function by this method solving simultaneously.
Description
Technical field
The present invention relates to Mobile portable terminal, particularly relate to the Mobile portable terminal using Android (android) system.
Background technology
The development of 3G technology and maturation so that 3G module is widely used, and it is increasingly becoming the standard configuration of consumer electronics product.Android system, as a operation system of smart phone, is exploitation based on the chip of high pass, owing to high pass chip achieves ppp dialing hardware, and in current Android Android system, does not possess again the support to ppp dialing.Due to little in the transmission of the industry data amount such as the tax, logistics, use 3G function not only to make cost uprise, and cause the waste of bandwidth resources, then use GSM service module then can significantly reduce cost, and project demands can be met.Meanwhile, at present, GSM service module, with its cheap price and stable performance, is still widely used on some industry special equipments.
It it is no matter 3G module or 2G module is offered to two passages: AT instruction path and data transmission channel.3G module is typically all USB port and receives and send data.USB kernel-driven can simulate at least two serial ports, and such access issues just solves, and is absent from the competition of resource.GSM service module only one of which physical serial interface, thus cannot meet transmission data when transmission AT instruction, it is necessary to realize two same physical serial interface of channel time-sharing multiplexing simultaneously.
Summary of the invention
This invention is the support by realizing ppp dialing in Android Android system, thus realizing gsm communication.
The present invention proposes a kind of method realizing GSM support on Android system, and it comprises the following steps:
Use pppd to service dial module and start pppd service dialing；
Use monitoring modular to be used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts described service dialing；
Simulating two pseudo-terminal ps0 and ps1 by analog module, one of them terminal is for AT instruction transmission, and another is for data transmission.
Wherein, after the data packing that pseudo-terminal sends, become GSM0710 protocol formatted data bag, be sent to modulation /demodulation module by serial ports；Resolve the packet received by described modulation /demodulation module on the other hand, be distributed to each pseudo-terminal.
The invention allows for a kind of device realizing GSM support on Android system, comprising:
Pppd services dial module and is used for starting pppd dialing；
Monitoring modular is used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts service dialing；
Analog module is used for simulating two pseudo-terminal ps0 and ps1.
Wherein, a described terminal ps0 is for AT instruction transmission, and another terminal ps1, for data transmission, becomes GSM0710 protocol formatted data bag after the data packing that pseudo-terminal sends, is sent to modulation /demodulation module by serial ports；Resolve the packet received by described modulation /demodulation module on the other hand, be distributed to each pseudo-terminal.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that on Android system realizes GSM support consistent with the embodiment of the present invention；
Fig. 2 is the schematic diagram that on Android system realizes the GSM device supported consistent with the embodiment of the present invention.
Specific embodiment
Fig. 1 is the method that on Android system realizes GSM support consistent with the embodiment of the present invention, and it comprises the following steps:
Step one, use pppd service dial module and start pppd service dialing, and above-mentioned pppd service is a kind of monitoring service based on point-to-point protocol.
Step 2, use monitoring modular are used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, illustrates that pppd service dialing does not have success, then restart service dialing.
Step 3, being simulated two pseudo-terminal ps0 and ps1 by analog module, one of them terminal is for AT instruction transmission, and another is for data transmission.AT instruction is generally used for the connection between terminal unit and PC application and communication.AT command set is from terminal unit (TerminalEquipment, or data terminal equipment (DataTerminalEquipment TE), DTE) to terminal adapter (TerminalAdapter, or what data circuit termination equipment (DataCircuitTerminalEquipment, DCE) sent TA).
So, after the data packing that pseudo-terminal sends, become GSM0710 protocol formatted data bag, be sent to modulation /demodulation module by serial ports；Resolve the packet received by modulation /demodulation module on the other hand, be distributed to each pseudo-terminal.
Fig. 2 is the device (1) that on Android system realizes GSM support consistent with the embodiment of the present invention, and it includes following device:
Build pppd in systems and service dial module, monitoring modular.Wherein, pppd services dial module for starting pppd dialing；Monitoring modular is used for monitoring whether ppp0 network interface activates.If ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts service dialing.After service dial-up success starts, GSM service module is transferred to perform, by analog module therein, simulate two pseudo-terminal ps0 and ps1, one of them terminal is for AT instruction transmission, another becomes GSM0710 protocol formatted data bag after the data packing that pseudo-terminal sends for data transmission, is sent to modulation /demodulation module by serial ports；Resolve the packet received by modulation /demodulation module on the other hand, be distributed to each pseudo-terminal.
Embodiment of above is merely to illustrate the present invention; and it is not limitation of the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes fall within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims.
Claims (2)
1. one kind realizes the GSM method supported on Android system, it is characterised in that including:
Use pppd to service dial module and start pppd service dialing；
Use monitoring modular to be used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts described service dialing；
Simulating two pseudo-terminal ps0 and ps1, one of them pseudo-terminal ps0 for AT instruction transmission by GSM service module, another pseudo-terminal ps1 is for data transmission；Wherein, after the data packing that pseudo-terminal sends, become GSM0710 protocol formatted data bag, be sent to modulation /demodulation module by serial ports；Resolve the packet received by described modulation /demodulation module on the other hand, be distributed to each pseudo-terminal.
2. one kind realizes the GSM device supported on Android system, it is characterised in that including:
Pppd services dial module, and it is used for starting pppd dialing；
Monitoring modular, it is used for monitoring whether ppp0 network interface activates, if ppp0 is not activated within the time of regulation, pppd service dialing not success is described, then restarts service dialing；
GSM service module, it is used for simulating two pseudo-terminal ps0 and ps1, and one of them described terminal ps0 is for AT instruction transmission, and another terminal ps1 is for data transmission；With
Modulation /demodulation module, the data wherein sent from pseudo-terminal become GSM0710 protocol formatted data bag after packing, and are sent to modulation /demodulation module by serial ports；Resolve the packet received by described modulation /demodulation module on the other hand, be distributed to each pseudo-terminal；
Described GSM service module includes analog module, and it is used for simulating two pseudo-terminal ps0 and ps1.
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| CN201210592480.6A CN103916517B (en) | 2012-12-30 | 2012-12-30 | A kind of method and apparatus realizing GSM support in Android system |
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| CN201210592480.6A CN103916517B (en) | 2012-12-30 | 2012-12-30 | A kind of method and apparatus realizing GSM support in Android system |
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| CN103916517A CN103916517A (en) | 2014-07-09 |
| CN103916517B true CN103916517B (en) | 2016-06-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107273321A (en) * | 2016-04-08 | 2017-10-20 | 上海大潮电子技术有限公司 | The serial port multiplexing method of vehicle dispatching terminal device and vehicle dispatching terminal device |
| CN106209526B (en) * | 2016-06-30 | 2019-04-26 | 龙尚科技（上海）有限公司 | A kind of communication module and its implementation for realizing PPP-Server function based on PPPD |
| CN108076153A (en) * | 2017-12-21 | 2018-05-25 | 深圳市四面信息科技有限公司 | A kind of the big data transmission method and system of anti-AT obstructions |
Citations (3)
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| CN101635978A (en) * | 2009-05-31 | 2010-01-27 | 南京中兴特种软件有限责任公司 | Multimode multiplexing wireless video route signal transmission method |
| CN102263935A (en) * | 2011-07-11 | 2011-11-30 | 青岛科技大学 | Video monitoring and transmission device based on TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network |
| CN102546619A (en) * | 2011-12-29 | 2012-07-04 | 浙江工业大学 | Modbus protocol conversion system based on 3G (The 3rd Generation Telecommunication) Internet access |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635978A (en) * | 2009-05-31 | 2010-01-27 | 南京中兴特种软件有限责任公司 | Multimode multiplexing wireless video route signal transmission method |
| CN102263935A (en) * | 2011-07-11 | 2011-11-30 | 青岛科技大学 | Video monitoring and transmission device based on TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network |
| CN102546619A (en) * | 2011-12-29 | 2012-07-04 | 浙江工业大学 | Modbus protocol conversion system based on 3G (The 3rd Generation Telecommunication) Internet access |
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