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AN2512 Datasheet(PDF) 33 Page - STMicroelectronics

Part # AN2512
Description  This application note describes how to design
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2512 Datasheet(HTML) 33 Page - STMicroelectronics

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AN2512
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}
}
else {
if (e->frac[i] < ELIMIT)
return(0);
// no, is within the limit?
else {
e->frac[i] -= ELIMIT;
(e->integ[i])++;
// no, subtract it and increment
}
}
}
e->frac[3] += (long int)e->quot[3];
// add quot to frac
led_frac += (Long int)e->quot[0];
if (led_frac >= MeterConstant) {
//MeterConstant = 0x1f400 //128000
0x4000)
GPIO0->PD ^= 0x1000;
//GPIO0.12
Active engergy output
led_frac -= MeterConstant;
//0x4000;
}
if (e->frac[3] >= ELIMIT) {
e->frac[3] -= ELIMIT;
(e->integ[3])++;
// no, subtract it and increment
lTotal[0] ++;
}
/*caculate the 3 phase total energy, and generate the output pulse*/
return(1);
// return limit has been reached
}



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