Thingmagic Mercury API v1.23.0 Bedienungsanleitung Seite 119
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Building On-Reader Applications
On Reader Applications 119
Saving the Program to the JFFS2 File System
The root MercuryOS filesystem runs out of a ramdisk that is loaded from the flash
memory device on boot. This filesystem is read/write while the reader is running, however
any changes made to the filesystem are gone when you reboot the reader.
The JFFS2 filesystem mounted at /tm is different. Any files you place in the /tm directory
or any of its subdirectories are saved to flash and restored when the system is restarted.
ThingMagic binaries are stored in the /tm/bin directory. You can use this directory or
create another directory to permanently store your programs. You can copy them to any
directory in the /tm filesystem where they are loaded from the flash, the next time the
reader is rebooted.
- Revision Table 3
- Date Version Description 4
- Contents 5
- LLRPReaders 14
- RFID environment 14
- Example Code 15
- Hardware Specific Guides 16
- Hardware Abstraction 17
- Level 1 API 19
- Connecting to Readers 20
- Level 1 API 21 21
- URI Syntax 22
- Region of Operation 23
- Reading Tags - The Basics 25
- Reader.startReading() 26
- Return on N Tags Found 27
- ReadListener 28
- ReadExceptionListener 28
- TagReadData 30
- Writing To Tags 31
- Status Reporting 32
- Exceptions 33
- FeatureNotSupportedException 34
- Level 2 API 35
- Advanced Reading 36
- StopTriggerReadPlan 37
- MultiReadPlan 37
- In-Module Multi-Protocol Read 38
- Selecting Specific Tags 39
- Gen2.Select 40
- ISO180006B.Select 40
- Tag Protocol 41
- Advanced Tag Operations 42
- Embedded TagOp Invocation 43
- Gen2 Standard TagOps 44
- Gen2.WriteData 45
- Gen2.Lock 45
- Gen2 Optional TagOps 47
- Gen2.BlockPermaLock 48
- Level 2 API 49 49
- Gen2.NXP.G2I.ChangeConfig 50
- Gen2.IDS.SL900A.AccessFifo 51
- Gen2.IDS.SL900A.GetLogState 51
- 52 Level 2 API 52
- ISO18000-6B TagOps 53
- Iso180006b.Lock 54
- Killing Tags 55
- Locking Tags 55
- Tag Memory Access 55
- 56 Level 2 API 56
- Antenna Usage 57
- GPIO Support 59
- Firmware Updates 60
- Rebooting Readers 61
- Protocol License Keys 62
- Debug Logging 63
- Configuring Readers 64
- /reader/baudRate 65
- /reader/baudRate 65
- 66 Level 2 API 66
- /reader/commandTimeout 66
- /reader/licenseKey 66
- /reader/userMode 67
- /reader/powerMode 67
- /reader/transportTimeout 67
- /reader/antenna 68
- /reader/antenna/portList 69
- /reader/gen2 70
- Level 2 API 71 71
- /reader/gen2/tagEncoding 73
- /reader/gen2/session 73
- 74 Level 2 API 74
- /reader/gen2/target 74
- /reader/gen2/Tari 74
- /reader/gpio 75
- /reader/iso18000-6b 76
- /reader/radio 77
- 78 Level 2 API 78
- /reader/radio/powerMax 78
- /reader/radio/powerMin 78
- /reader/radio/readPower 79
- /reader/radio/writePower 79
- /reader/radio/temperature 79
- /reader/read 80
- /reader/region 81
- /reader/status 82
- /reader/tagReadData 83
- 84 Level 2 API 84
- /reader/tagop 85
- /reader/version 86
- /reader/version/software 87
- 88 Level 2 API 88
- Level 3 API 89
- 90 Level 3 API 90
- .NET Language Interface 91
- USB Drivers 92
- .NET Language Interface 93 93
- 94 .NET Language Interface 94
- C Language Interface 95
- C Language Features 96
- Build Considerations 97
- 98 C Language Interface 98
- IOS Support 99
- 100 C Language Interface 100
- Creating an APP ID 100
- Java Language Interface 101
- LLRP ToolKit (LTK) Support 102
- Java Language Interface 103 103
- Android Support 104
- Advanced Customization 105
- Changes Required for C#/.NET 107
- 108 Advanced Customization 108
- Changes Required for C 109
- Example: 110
- Changes Required for Java 111
- 112 Advanced Customization 112
- On Reader Applications 113
- Requirements 114
- Instructions 114
- Compiling an Application 115
- Troubleshooting 116
- Via NFS Mount 116
- Via wget 116
- Default inittab 117
- Modified inittab 117
- Telnet to the Reader 118
- On Reader Applications 119 119
- 120 On Reader Applications 120
- Performance Tuning 121
- How UHF RFID Works (Gen2) 122
- Transmit Power 123
- Reader-to-Tag Settings 123
- Tag-to-Reader Settings 124
- Tag Contention Settings 124
- Performance Tuning 125 125
- 126 Performance Tuning 126
- Optimizing Gen2 settings 127
- 128 Performance Tuning 128
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