Discussion on Application of Embedded Operating System in Dual-Core Smart Electric Meter

Table 3

Source address and destination address coding rules of protocol data frames.

bit7	bit6	bit5	bit4	bit3	bit2	bit1	bit0
Process number; 0: initial value; 1: basic APP; 2: communication service; 3: metering management service; 4: platform management service; 5: extended app1; 6: extended app2; 7: extended app3; 8: expand app4; 9: expand app5; 10: expand app6; 11: extend app7; 12: extend app8; 13: extend app9; 14: extend app10; 15: virtual bus service				Reserve	Every thread number in APP, 0–7; 0: main thread; Basic APP; 0: general basic application app; 1: time-sharing measurement; 2: demand measurement; 3: freezing; 4: display; 5: cost control; 6: event; Communication APP; 1: uplink carrier; 2: downlink Bluetooth; 3: load identification; 4: other communications (continuous coding); Other processes