EnergyMeter

ADE7880 Energy Meter Driver

Application made to configure and read Energy Meter IC ADE7880 registors via RPi,

Depending on configuration the application write results to shell or to a specified file

the file config.csv is used to configure the program operation via external program.

The structure of the command used is as follows

divice_id(int);fileName;Sampling_Rate(uint32_t);loop_control_flag(bool);pause_flag(bool)

Other supported commands for ADE7880 registors direct access

driver_ade7880 config -> Runs Default configuration procedure. As described in the device datasheet section QUICK SETUP AS ENERGY METER (Outputs resulting message to consol on success or failure.)

driver_ade7880 read [register phisical address (HEX eg. 0xFFFF)] [register size in byte (decimal)]

-> Reads Specific register value (Outputs resulting message to consol on success or failure)

driver_ade7880 write [register phisical address (HEX eg. 0xFFFF)] [value to be stored (HEX eg. 0xFFFF)] [register size in byte (decimal)]

-> Writes the given value to Specific register (Outputs resulting message to consol on success or failure)

CALIBRATION CONSTANTS: This constants calculated so that readings fetched from target registers can be converted into meaningful values such as amps , volts, kwh, watt. The constants should be adjusted if there is any change to Hardware design The calibration steps can be found from this calibration document http://www.analog.com/static/imported-files/application_notes/AN-1171.pdf . Note: Since all phases on the meter are matched, the same constant can be used for all energy, power,current rms and voltage rms readings on any Rpi VLSB_CONST 211184.71337579617834394904458599 LSB constant for voltage reading 24 volt max is assumed ILSB_CONST 353022.88732394 LSB constant for current reading 30 Amp max is assumed WHLSB_CONST (67.28)*2.275 LSB constant for energy reading WATTLSB_CONST 8505 LSB constant for power reading

TRANSFORMER_RATIO 20.56621005 This value is the ratio of the voltage transformer used to step down the line voltage to lower level. the value should be adjusted if different transformer is used.

Moredetail is provided in the doxigen output