Maxim Integrated 71M6521BE Energy Meter IC Family Software - Manual (Page 5)

71M652X Software User’s Guide
Revision 1.7 TERIDIAN Proprietary 5 of 138
© Copyright 2005-2007 TERIDIAN Semiconductor Corporation
5.3 Program Flow ......................................................................................................................................... 46
5.3.1 Startup and Initialization 46
5.4 Basic Code Architecture ........................................................................................................................ 49
5.4.1 Initialization 49
5.4.2 Foreground 50
Timer Interrupt ...................................................................................................................... 51
CE_BUSY Interrupt ............................................................................................................... 53
XFER_BUSY and RTC Interrupt ........................................................................................... 53
5.4.2.1 SERIAL Interrupt .................................................................................................. 55
5.4.3 Background Tasks 56
meter_run() ........................................................................................................................... 56
meter_LCD ............................................................................................................................ 57
Command Line Interpreter .................................................................................................... 58
Auto-Calibration .................................................................................................................... 59
CE Default Calibration ........................................................................................................... 60
Command Pending ............................................................................................................... 62
EEPROM Read/Write ............................................................................................................ 63
Battery Test ........................................................................................................................... 65
Power Factor Measurement .................................................................................................. 66
5.4.4 Watchdog Timer 66
5.4.5 Real-Time Clock (RTC) 66
5.5 Managing Mission and Battery Modes ................................................................................................. 67
5.6 Data Flow ................................................................................................................................................ 68
5.7 CE/MPU Interface ................................................................................................................................... 69
5.8 Boot Loader ............................................................................................................................................ 69
5.9 Source Files ............................................................................................................................................ 69
5.10 Auxiliary Files ......................................................................................................................................... 71
5.11 Include/Header Files .............................................................................................................................. 72
5.11.1 OPTIONS.H 72
5.11.2 Register Definitions 72
5.11.3 Other Include/Header Files 73
5.12 CE Image Files ....................................................................................................................................... 74
5.13 Common MPU Addresses ..................................................................................................................... 74
5.14 Firmware Application Information ........................................................................................................ 79
5.14.1 Sag Detection 79
5.14.2 Temperature Measurement 79
5.14.3 Temperature Compensation for Measurements 80
5.14.4 Temperature Compensation for the RTC 80
5.14.5 Validating the Battery 81
5.15 Alphabetical Function Reference ......................................................................................................... 82
5.16 Errata ....................................................................................................................................................... 95
5.17 Porting 71M6511/6513 Code to the 71M6521 ....................................................................................... 96