PQ_Hybrid_Electrical_Equipment_Team / PQ_INA226

電流電圧センサINA226のライブラリ

Dependents:   Hybrid_IZU2021_MAIN_OS5 Hybrid_IZU2021_MAIN

PQ_INA226.cpp@1:415a7cc3ec67, 2021-03-08 (annotated)

Committer:
tanahashi
Date:
Mon Mar 08 16:48:44 2021 +0000
Revision:
1:415a7cc3ec67
Parent:
0:4c315fe513d0 
fixed LSB

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tanahashi 0:4c315fe513d0 1 #include "mbed.h"
tanahashi 0:4c315fe513d0 2 #include "PQ_INA226.h"
tanahashi 0:4c315fe513d0 3
tanahashi 0:4c315fe513d0 4 INA226::INA226(I2C &i2c, A0_t A0, A1_t A1)
tanahashi 0:4c315fe513d0 5 {
tanahashi 0:4c315fe513d0 6 _i2c = &i2c;
tanahashi 0:4c315fe513d0 7 _addr = (0b1000000 | A1 << 2 | A0) << 1;
tanahashi 0:4c315fe513d0 8 _i2c->frequency(400000);
tanahashi 0:4c315fe513d0 9 }
tanahashi 0:4c315fe513d0 10
tanahashi 0:4c315fe513d0 11 void INA226::begin(){
tanahashi 0:4c315fe513d0 12 cmd[0] = INA226_CALIBRATION;
tanahashi 0:4c315fe513d0 13 cmd[1] = 0x0A;
tanahashi 0:4c315fe513d0 14 cmd[2] = 0x00;
tanahashi 0:4c315fe513d0 15 _i2c->write(_addr, cmd, 3);
tanahashi 0:4c315fe513d0 16 }
tanahashi 0:4c315fe513d0 17
tanahashi 0:4c315fe513d0 18 bool INA226::test()
tanahashi 0:4c315fe513d0 19 {
tanahashi 0:4c315fe513d0 20 cmd[0] = INA226_WHO_AM_I;
tanahashi 0:4c315fe513d0 21 _i2c->write(_addr, cmd, 1);
tanahashi 0:4c315fe513d0 22 _i2c->read(_addr, buff, 1);
tanahashi 0:4c315fe513d0 23 if(buff[0] == 0x22) {
tanahashi 0:4c315fe513d0 24 return true;
tanahashi 0:4c315fe513d0 25 } else {
tanahashi 0:4c315fe513d0 26 return false;
tanahashi 0:4c315fe513d0 27 }
tanahashi 0:4c315fe513d0 28 }
tanahashi 0:4c315fe513d0 29
tanahashi 0:4c315fe513d0 30 void INA226::read(float *voltage, float *current, float *power)
tanahashi 0:4c315fe513d0 31 {
tanahashi 0:4c315fe513d0 32 read_voltage(voltage);
tanahashi 0:4c315fe513d0 33 read_current(current);
tanahashi 0:4c315fe513d0 34 read_power(power);
tanahashi 0:4c315fe513d0 35 }
tanahashi 0:4c315fe513d0 36
tanahashi 0:4c315fe513d0 37 void INA226::read_voltage(float *voltage){
tanahashi 0:4c315fe513d0 38 cmd[0] = INA226_BUS_VOLTAGE;
tanahashi 0:4c315fe513d0 39 _i2c->write(_addr, cmd, 1);
tanahashi 0:4c315fe513d0 40 _i2c->read(_addr, buff, 2);
tanahashi 0:4c315fe513d0 41 *voltage = (short)(buff[0] << 8 | buff[1]) * INA226_VOLTAGE_LSB;
tanahashi 0:4c315fe513d0 42 }
tanahashi 0:4c315fe513d0 43
tanahashi 0:4c315fe513d0 44 void INA226::read_current(float *current){
tanahashi 0:4c315fe513d0 45 cmd[0] = INA226_CURRENT;
tanahashi 0:4c315fe513d0 46 _i2c->write(_addr, cmd, 1);
tanahashi 0:4c315fe513d0 47 _i2c->read(_addr, buff, 2);
tanahashi 1:415a7cc3ec67 48 *current = (short)(buff[0] << 8 | buff[1]) * INA226_CURRENT_LSB;
tanahashi 0:4c315fe513d0 49 }
tanahashi 0:4c315fe513d0 50
tanahashi 0:4c315fe513d0 51 void INA226::read_power(float *power)
tanahashi 0:4c315fe513d0 52 {
tanahashi 0:4c315fe513d0 53 cmd[0] = INA226_POWER;
tanahashi 0:4c315fe513d0 54 _i2c->write(_addr, cmd, 1);
tanahashi 0:4c315fe513d0 55 _i2c->read(_addr, buff, 2);
tanahashi 0:4c315fe513d0 56 *power = (short)(buff[0] << 8 | buff[1]) * INA226_POWER_LSB;
tanahashi 0:4c315fe513d0 57 }