AN452 datasheet(2/26 Pages) SILABS

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AN452

Rev. 0.1

1.2. Required Standards

1.2.1. EN 13757-4

EN 13757-4

Communication system for meters and remote reading of meters

Part 4: Wireless meter readout

Radio meter reading for operation in the 868 MHz to 870 MHz SRD band

1.2.2. EN 13757-3

Communication system for meters and remote reading of meters

Part 3: Dedicated Application Layer

1.2.3. IEC 60870-2-1:1992

Telecontrol equipment and systems

Part 5: Transmission protocols

Section 1:Link transmission procedure

1.2.4. IEC 60870-1-1:1990

Telecontrol equipment and systems

Part 5: Transmission protocols

Section 1: Transmission frame formats

1.3. Definitions

 M-Bus—M-Bus is a wired standard for meter reading in Europe.

 Wireless M-Bus—Wireless M-Bus for meter reading applications in Europe.

 PHY—Physical Layer defines how data bits and bytes are encoded and transmitted.

 API—Application Programmer interface.

 LINK—Data Link Layer- defines how blocks and frames are transmitted.

 CRC—Cyclic Redundancy Check.

 FSK—Frequency Shift Keying.

 Chip—Smallest unit of transmitted data. One data bit is encoded as multiple chips.

 Module—A C code source .c file.

1.4. Coding Conventions

The following conventions were adopted for this project:

 The compiler_defs.h file is used for cross compiler support.

 Memory specific pointers are used for buffers and module registers.

 Each module has a short descriptive file name.



MbusLink.c



MbusPhy.c

 Public functions include a short module prefix:



MbusLink—mbus API



MbusPhy—PHY module

 Public variables also include the same module prefix, starting with a capital letter, since they are globals.



MbusLink—mbus API



MbusPhy—PHY module

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