CN103112415B - Communication method of 24LE1 wireless module and wince - Google Patents
Communication method of 24LE1 wireless module and wince Download PDFInfo
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- CN103112415B CN103112415B CN201310029033.4A CN201310029033A CN103112415B CN 103112415 B CN103112415 B CN 103112415B CN 201310029033 A CN201310029033 A CN 201310029033A CN 103112415 B CN103112415 B CN 103112415B
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Abstract
The invention discloses a communication method of a 24LE1 wireless module and a wince. The communication method is characterized in that a standard deviation (SD) protocol conversion chip is arranged for connecting the 24LE1 wireless module and the wince. When the 24LE1 wireless module transmits data to a center control module wince, the communication method includes the steps: (1) the 24LE1 wireless module transmits the data to an SD protocol conversion module through a serial port; (2) the SD protocol conversion module sets a self state to be in a data storage state after receiving the data; and (3) a center control program wince reads the state of the SD protocol conversion module every a time period, and then reads the data of the SD protocol conversion module when the center control program wince fetches the state of data storage in the SD protocol conversion module. The communication method solves the problems of communication between external arrangement and the wince well, and also effectively solves the problem of compatibility between different navigation plates and map software.
Description
Technical field
The present invention relates to vehicle electric field, the method that the 24LE1 wireless module in particular in a kind of auto-navigation system communicates with embedded system wince.
Background technology
Along with the continuous expansion of domestic navigation product marketing users scale, user also presents the trend development of diversification to the demand of navigation product.There is very large problem in the data interaction between present navigational aid and map software, such as: the CPU input/output port of navigational aid company is different from the input and output agreement of map software company, and both sides are also different to the read-write protocol of SD card.The problem of this poor compatibility hinders the car networking development of company in beacon service (namely above-mentioned map software is navigation software) greatly.
Current 24LE1 wireless module (i.e. 2.4G wireless module) and the signalling methods of wince adopt traditional serial mode to communicate, and this signalling methods just can carry out actv. development and Design under must knowing the serial ports situation of embedded system, so bring very large difficulty and challenge for the serial ports exploitation of unknown embedded system.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide the method that the 2.4G wireless module in a kind of auto-navigation system communicates with embedded system wince, be intended to solve under mode that existing 2.4G wireless module communicates with embedded system wince must know the serial ports situation of embedded system and just can carry out actv. development and Design, for the problem that the serial ports development difficulty of unknown embedded system is large.
Technical scheme of the present invention is as follows:
The method that 2.4G wireless module communicates with wince, wherein, arranges a SD protocol conversion chip and connects 2.4G wireless module and wince, when 2.4G wireless module transmission data give middle control module wince, the steps include:
Data are passed to SD protocol conversion module by serial ports by step S1:2.4G wireless module;
The state of oneself after receiving the data, can be set to state data memory by step S2:SD protocol conversion module;
Step S3: the middle control program wince state reading SD protocol conversion module within a time period, when central control program wince grabs in SD protocol conversion module and has storing data state, then enters to read the data of SD protocol conversion mould.
The method that described 2.4G wireless module communicates with wince, wherein, when central control program wince transmits data to 2.4G wireless module, the steps include:
Step X1: data can be passed to SD protocol conversion module by middle control program wince;
The state of oneself after receiving the data, can be set to state data memory by step X2:SD protocol conversion module;
Step X3:2.4G wireless module reads the state of SD protocol conversion module within a time period, when getting in SD protocol conversion module the data having middle control program wince to give, then the digital independent be temporarily stored in SD protocol conversion module is just walked by 2.4G wireless module.
The method that described 2.4G wireless module communicates with wince, wherein, the function of described middle control program wince is that it is mutual to realize with mapping module, comprising startup map; Obtain current location and dial backstage phone.
The method that described 2.4G wireless module communicates with wince, wherein, the function of described middle control program wince is mutual with SD protocol conversion module, comprising the current SD protocol conversion module state of reading, then selects interface to be received in-vehicle navigation apparatus or 2.4G wireless module.
The method that described 2.4G wireless module communicates with wince, wherein, the method that SD protocol conversion chip realizes conversion is: protocol conversion is carried out in the read-write of SD protocol conversion chip to specific two sectors of memory device, a sector is data sector, is all transformed in corresponding I/O device to the data of data sector read-write; Another sector, for controlling sector, configures baud rate and the data format of I/O device by controlling sector.
Beneficial effect of the present invention: the present invention by carrying out the communication of 2.4G wireless module and wince under SDIO interface protocol, the design concept of the design is that can to carry out the communication data of 2.4G wireless module and wince for a unknown ARM serial ports mutual, and accurately required data can be passed to wince, wince also can transfer data to 2.4G wireless module accurately simultaneously.This design can be good at solving the communication between peripheral hardware and wince, and actv. solves the compatibility issue of different navigation plate and map software simultaneously.
Accompanying drawing explanation
Fig. 1 is communication means diagram of circuit provided by the invention.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
Auto-navigation system of the present invention comprises in-vehicle navigation apparatus, SD protocol conversion chip, mapping module, 2.4G wireless chip and middle control module, control program wince in running in described middle control module, but and in being limited to wince system, as long as the operating system that band SD card drives can be used.
See Fig. 1, the invention provides the method idiographic flow that the 2.4G wireless module in a kind of auto-navigation system communicates with embedded system wince as follows:
When 2.4G wireless module transmission data give middle control module wince, the steps include:
Data are passed to SD protocol conversion module by serial ports by step S1:2.4G wireless module;
The state of oneself after receiving the data, can be set to state data memory by step S2:SD protocol conversion module;
Step S3: the middle control program wince state reading SD protocol conversion module within a time period, when central control program wince grabs in SD protocol conversion module and has storing data state, then enters to read the data of SD protocol conversion mould.
When central control program wince transmits data to 2.4G wireless module, the steps include:
Step X1: data can be passed to SD protocol conversion module by middle control program wince;
The state of oneself after receiving the data, can be set to state data memory by step X2:SD protocol conversion module;
Step X3:2.4G wireless module reads the state of SD protocol conversion module within a time period, when getting in SD protocol conversion module the data having middle control program wince to give, then the digital independent be temporarily stored in SD protocol conversion module is just walked by 2.4G wireless module.
Wherein, SD protocol conversion module realizes standard SD specification 2.0 agreement; Serve as the effect of converting interface.Under conventional sense, retentively module and in-vehicle navigation apparatus is mutual; When 2.4G wireless module has data to need to send to mapping module, the state of mapping module and in-vehicle navigation apparatus can be hung up by SD protocol conversion module, and is that mapping module and 2.4G wireless module carry out alternately by interface conversion; When mapping module has data will pass to 2.4G wireless module, the state of mapping module and in-vehicle navigation apparatus can be hung up by SD protocol conversion module, and is that mapping module and 2.4G wireless module carry out alternately by interface conversion; Mapping module will with in-vehicle navigation apparatus mutual time, the interface of current state can maintain by SD protocol conversion module, and interface is given to in-vehicle navigation apparatus, realizes the mutual of in-vehicle navigation apparatus and mapping module.
The function of described middle control program wince is: first, realize and mapping module mutual.As: start map; Obtain current location; Dial backstage phone; Next is mutual with SD protocol conversion module.As: read current SD protocol conversion module state and process next interface is given to in-vehicle navigation apparatus or 2.4G wireless module.
The use of described SD protocol conversion module is just as card reader.SD card common in the past can only be inserted into main frame when a storage equipment use.And the SD card being provided with SD protocol conversion chip both can work as a storage equipment use after inserting main frame, a serial equipment can be worked as again and used.This SD protocol conversion module is the addressing space of size specific in the leading portion of TF card internal memory to I/O device use, and addressing space below continues to use to storage card.Be equivalent to sacrifice a little memory headroom.
The method that SD protocol conversion chip realizes conversion is: SD protocol conversion chip needs to carry out protocol conversion to the read-write of specific two sectors, the present invention be directed to TF card memory area.A sector is data sector.The data that this data sector is read and write all are transformed in corresponding I/O device.Another sector is for controlling sector.Sector can be controlled by this and configure I/O device, the baud rate of such as equipment, data format.
There is this protocol conversion, only needed application layer to initiate just can have access to corresponding peripheral hardware to the direct access of these two sectors on an operating system.Because respective drive has mutual exclusion function, do not affect file system and access external storage equipment simultaneously, so just can reach the arbitrary object simultaneously using I/O device and storage equipment.
The present invention by carrying out the communication of 2.4G wireless module and wince under SDIO interface protocol (i.e. standard SD specification 2.0 agreement), the design concept of the design is that can to carry out the communication data of 2.4G wireless module and wince for a unknown ARM serial ports mutual, and accurately required data can be passed to wince, wince also can transfer data to 2.4G wireless module accurately simultaneously.This design can be good at solving the communication between peripheral hardware and wince, and actv. solves the compatibility issue of different navigation plate and map software simultaneously.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (4)
1. the method that communicates with middle control module wince of a 24LE1 wireless module, it is characterized in that, a SD protocol conversion module is set and connects 24LE1 wireless module and middle control module wince, when 24LE1 wireless module transmission data give middle control module wince, the steps include:
Data are passed to SD protocol conversion module by serial ports by step S1:24LE1 wireless module;
The state of oneself after receiving the data, can be set to state data memory by step S2:SD protocol conversion module;
Step S3: the middle control module wince state reading SD protocol conversion module within a time period, when central control program wince grabs in SD protocol conversion module and has storing data state, then enters to read the data of SD protocol conversion module;
Wherein, the method that SD protocol conversion module realizes conversion is: protocol conversion is carried out in the read-write of SD protocol conversion module to specific two sectors of memory device, and a sector is data sector, is all transformed in corresponding I/O device to the data of data sector read-write; Another sector, for controlling sector, configures baud rate and the data format of I/O device by controlling sector.
2. the method that communicates with middle control module wince of 24LE1 wireless module according to claim 1, is characterized in that, when central control module wince transmits data to 24LE1 wireless module, the steps include:
Step X1: data can be passed to SD protocol conversion module by middle control module wince;
The state of oneself after receiving the data, can be set to state data memory by step X2:SD protocol conversion module;
Step X3:24LE1 wireless module reads the state of SD protocol conversion module within a time period, when getting in SD protocol conversion module the data having middle control module wince to give, then the digital independent be temporarily stored in SD protocol conversion module is just walked by 24LE1 wireless module.
3. the method that communicates with middle control module wince of 24LE1 wireless module according to claim 1 and 2, is characterized in that, the function of described middle control module wince is that it is mutual to realize with mapping module, comprising startup map; Obtain current location and dial backstage phone.
4. the method that communicates with middle control module wince of 24LE1 wireless module according to claim 1 and 2, it is characterized in that, the function of described middle control module wince is mutual with SD protocol conversion module, comprising the current SD protocol conversion module state of reading, then select interface to be received in-vehicle navigation apparatus or 24LE1 wireless module.
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| CN201310029033.4A CN103112415B (en) | 2013-01-25 | 2013-01-25 | Communication method of 24LE1 wireless module and wince |
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| CN201310029033.4A CN103112415B (en) | 2013-01-25 | 2013-01-25 | Communication method of 24LE1 wireless module and wince |
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| CN103112415B true CN103112415B (en) | 2015-07-15 |
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Citations (5)
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| CN1690946A (en) * | 2004-04-22 | 2005-11-02 | 钟巨航 | External memory interface switching device |
| CN101340253A (en) * | 2008-08-07 | 2009-01-07 | 北京创毅视讯科技有限公司 | Mobile multimedia broadcast receiving apparatus, receiving card and receiving terminal |
| EP2081093A2 (en) * | 2008-01-18 | 2009-07-22 | Hitachi Ltd. | Vehicle control apparatus |
| CN102647529A (en) * | 2012-03-30 | 2012-08-22 | 广东翼卡车联网服务有限公司 | Method for setting navigation destination by utilizing SD (secure digital) card |
| CN202547654U (en) * | 2012-03-30 | 2012-11-21 | 广东翼卡车联网服务有限公司 | System for setting navigation destination by SD (Secure Digital) memory card with built-in wireless transmitting module |
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2013
- 2013-01-25 CN CN201310029033.4A patent/CN103112415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1690946A (en) * | 2004-04-22 | 2005-11-02 | 钟巨航 | External memory interface switching device |
| EP2081093A2 (en) * | 2008-01-18 | 2009-07-22 | Hitachi Ltd. | Vehicle control apparatus |
| CN101340253A (en) * | 2008-08-07 | 2009-01-07 | 北京创毅视讯科技有限公司 | Mobile multimedia broadcast receiving apparatus, receiving card and receiving terminal |
| CN102647529A (en) * | 2012-03-30 | 2012-08-22 | 广东翼卡车联网服务有限公司 | Method for setting navigation destination by utilizing SD (secure digital) card |
| CN202547654U (en) * | 2012-03-30 | 2012-11-21 | 广东翼卡车联网服务有限公司 | System for setting navigation destination by SD (Secure Digital) memory card with built-in wireless transmitting module |
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Address after: 528133, No. 2, inner ring road, 1 North East Sea Road, Sanshui East Road, Sanshui District, Guangdong, Shenzhen 303, 204 Applicant after: Guangdong Ecar Telematics Service Co.,Ltd. Address before: 528133 C zone, southwest industry zone, Sanshui District, Guangdong, Shenzhen Applicant before: Guangdong Ecar Telematics Service Co.,Ltd. |
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Address after: 528133, No. 2, inner ring road, 1 North East Sea Road, Sanshui East Road, Sanshui District, Guangdong, Foshan 303, 204 Applicant after: Guangdong Ecar Telematics Service Co.,Ltd. Address before: 528133, No. 2, inner ring road, 1 North East Sea Road, Sanshui East Road, Sanshui District, Guangdong, Shenzhen 303, 204 Applicant before: Guangdong Ecar Telematics Service Co.,Ltd. |
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Address after: 528133 F3 (F3), C District, southwest garden of Sanshui center science and Technology Industrial Park, Foshan, Guangdong Patentee after: Guangdong Ecar Telematics Service Co.,Ltd. Address before: 528133, No. 2, inner ring road, 1 North East Sea Road, Sanshui East Road, Sanshui District, Guangdong, Foshan 303, 204 Patentee before: Guangdong Ecar Telematics Service Co.,Ltd. |