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Flash Memory
46 Functionality of the Embedded Modules
Flash Memory Sector Mapping
Accessing the Flash
The flash is accessed only through the boot loader program. Flash is not accessible while
the application FW is running.
All accesses to flash are in terms of two-byte word addresses and word lengths. Thus,
the Write Flash Sector, Read Flash Sector, Erase Flash Sector, and Modify Flash
Sector commands all use the same argument types. The maximum amount of flash that
can be written or modified at a single time is 125 words, and the maximum amount of
flash that can be read at a single time is 124 words. This is a limitation of the serial
interface and data packet sizes. Multiple data packets are used to read/write/modify a
larger area of flash.
When using the Erase Flash Sector or Write Flash Sector commands, the correct
password must be provided to complete the operation. This is done to protect against
accidentally erasing or writing to the flash. See Boot Loader Commands
.
Upgrading Application FW
The application FW is upgraded in flash. New versions of firmware are released in a or
.sim binary file format for the M5e and M5e-Compact.The .sim binary file format is a
compressed file format that stores the data in raw binary.
Direct Flash Addressing
The modules also provide a direct interface to the flash memory. This is a legacy interface
and is not recommended for new development efforts.
Sector Access Code
M5e/M5e-
Compact
Start Addr
M5e/M5e-
Compact
Size
(bytes)
BootLoader Read Only 0x01 0x000000 8 kB
Application Read/Write 0x02 0x004000 224 kB
User Memory Read/Write 0x03 0x03C000 16 kB
Hardware Info Read Only 0x04 0x002000 8 kB
- Mercury5e and M5e-Compact 1
- Developer’s Guide 1
- Revision Table 3
- Date Version Description 4
- Industry Canada 7
- Contents 9
- Introduction 21
- Product Line Overview 22
- Hardware Overview 23
- RFID ASIC 24
- Connectors 24
- Hardware Revisions 25
- SW Overview 26
- Boot Loader 27
- Application Firmware 27
- About the Reader Assistant 28
- Application Development 28
- Regional Support 29
- CAUTION! 31
- Frequency Setting 32
- Frequency Hop Table 33
- EU3 Region 34
- PRC Region 34
- KR2 Region 34
- RF Power Setting 35
- Antenna Ports 36
- Monostatic Mode 37
- Bistatic Mode 37
- Using a Multiplexer 37
- Power Management 40
- Low Power Mode 41
- Tag Buffer 42
- Tag Operations 45
- Flash Memory 45
- Accessing the Flash 46
- Upgrading Application FW 46
- Direct Flash Addressing 46
- M4e Direct Flash Addressing 47
- M5e Flash Addressing 48
- Serial Port 49
- M5e and M5e-Compact GPIOs 50
- Default Settings 51
- Protocol 53
- Host-to-Reader Communication 54
- Field Length Description 54
- CCITT CRC-16 Cal 54
- Reader-to-Host Communication 55
- CCITT CRC-16 Calculation 56
- Microprocessor ACK Message 58
- Command Set 63 63
- Boot Loader Commands 64
- Command Set 65 65
- Read Flash (02h) 66
- Command Set 67 67
- Boot Firmware (04h) 69
- Set Baud Rate (06h) 69
- FF 04 06 00 01 C2 00 A4 60 70
- FF 00 08 1D 07 71
- FF 00 09 1D 06 71
- Get Current Program (0Ch) 72
- Write Flash Sector (0Dh) 72
- Get Sector Size (0Eh) 73
- Modify Flash Sector (0Fh) 73
- Select Process 77
- Flag Persistence Rules 78
- Command Set 79 79
- 80 Command Set 80
- Example: 81
- Gen2 Memory Map 82
- Read Tag Single (21h) 83
- Select Data CRC 84
- 86 Command Set 86
- Command Set 87 87
- Read Tag Multiple (22h) 89
- 90 Command Set 90
- Tag Inventory with Select 91
- 94 Command Set 94
- Command Set 95 95
- 96 Command Set 96
- Command Set 97 97
- Write Tag EPC (23h) 98
- Status CRC 99
- Write Tag Data (24h) 100
- Application Tag Commands 101
- Write Tag Data Fields 101
- Field Value Description 101
- Examples 102
- Select Data Write Data CRC 103
- 104 Command Set 104
- Select EPC ID CRC 105
- Read Tag Data (28h) 107
- Get Tag Data 108
- Get Tag Data and Meta Data 109
- 110 Command Set 110
- Appendix C: Error Messages 111
- Field Length Value 111
- Error Status Codes 112
- SOH Length OpCode CRC 113
- Get Tag EPCs 114
- Get Tag EPCs and Metadata 115
- 116 Command Set 116
- FF 03 29 00 15 00 97 55 117
- 118 Command Set 118
- Command Set 120
- Partial Load Image 121
- Full Load Image 121
- 122 Command Set 122
- Command Set 123 123
- 126 Command Set 126
- LoadImage 126
- Reserved Memory 126
- EPC Memory 126
- User Memory 126
- 128 Command Set 128
- BlockReadLock 128
- 130 Command Set 130
- 132 Command Set 132
- Set ReadProtect 132
- Reset ReadProtect 133
- 134 Command Set 134
- Change EAS 134
- Command Set 135 135
- 136 Command Set 136
- Calibrate 137
- 138 Command Set 138
- ChangeConfig 138
- Command Set 139 139
- 140 Command Set 140
- QT Read/Write 141
- 142 Command Set 142
- IDS SL900A (Chip Type=0x0A) 143
- BlockWrite (2Dh) 144
- BlockPermaLock (2Eh) 146
- 148 Command Set 148
- BlockErase (2Eh) 149
- 150 Command Set 150
- Set Application Commands 152
- Set Antenna Port (91h) 153
- Set Read TX Power (92h) 156
- Set Write TX Power (94h) 157
- Set Frequency Hop Table (95h) 158
- Set User GPIO Outputs (96h) 159
- SOH Length OpCode Region CRC 160
- Set Power Mode (98h) 161
- Set User Mode (99h) 161
- Set Reader Configuration(9Ah) 162
- 164 Command Set 164
- 166 Command Set 166
- Note: Searches using the 166
- 168 Command Set 168
- Get Application Commands 169
- Get Hardware Version (10h) 170
- Non-Multiplexer Options 171
- Logical Antenna Options 172
- SOH Length OpCode Option CRC 173
- Get Reader Configuration(6Ah) 181
- Get Reader Statistics (6Ch) 182
- 184 Command Set 184
- FCC Test Commands 187
- SOH Length OpCode CW CRC 188
- Appendix A: Hardware Details 189
- Mechanicals 190
- M5e Mechanicals 190
- Antenna Connector 191
- Communications Connector 192
- Devkit Hardware 193
- Devkit USB Interface 194
- Devkit Jumpers 195
- Devkit Schematics 196
- Demo Application 197
- Arbser Command Line Utility 198
- Reading a Tag 199
- Get Version Command 200
- Boot Firmware Command 201
- Set Current Region Command 203
- Set Read TX Power Command 204
- Set Antenna Port Command 204
- Unexpected Results 207
- No Tag ID is Returned 208
- FAULT_INVALID_OPCODE – 101h 212
- FAULT_INVALID_REGION – 10Bh 215
- Bootloader Faults 216
- Flash Faults 217
- Solution 219
- Protocol Faults 220
- FAULT_NO_TAGS_FOUND – 400h 221
- FAULT_AFE_NOT_ON – 405h 222
- FAULT_DATA_TOO_LARGE – 40Bh 224
- FAULT_HIGH_RETURN_LOSS – 505h 228
- Tag ID Buffer Faults 230
- System Errors 232
- Commands 233
- Release Version 1.0.34 234
- SOH Length OpCod 235
- Lock Tag (25h) 237
- Kill Tag (26h) 238
- Write Tag Data 239
- SOH Length OpCode Options CRC 245
- Appendix E: Environmental 247
- Considerations 247
- Raising the ESD Threshold 250
- Environmental 251
- Tag Considerations 251
- Multiple Readers 252
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