Jack Cosslett / Mbed 2 deprecated frdm_gpio

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Dependencies:   USBDevice mbed

ina226.cpp@0:4318f664a8e1, 2015-12-02 (annotated)

Committer:
Caconym
Date:
Wed Dec 02 18:01:38 2015 +0000
Revision:
0:4318f664a8e1
Child:
1:5dc94660e311
e

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Caconym 0:4318f664a8e1 1 #include "ina226.h"
Caconym 0:4318f664a8e1 2
Caconym 0:4318f664a8e1 3 INA226::INA226(I2C* theI2C, char address)
Caconym 0:4318f664a8e1 4 {
Caconym 0:4318f664a8e1 5 //set up config register //256 averages //continuous shunt voltage conversion
Caconym 0:4318f664a8e1 6 short write_byte = CONF_DEFAULT |_BV(AVG2) | _BV(AVG0) | _BV(MODE3) | _BV(MODE1);
Caconym 0:4318f664a8e1 7
Caconym 0:4318f664a8e1 8 write(REG_CONF, write_byte);
Caconym 0:4318f664a8e1 9 //set up calibration (full range ~1.6A)
Caconym 0:4318f664a8e1 10 write(REG_CAL, 0x0800);
Caconym 0:4318f664a8e1 11 }
Caconym 0:4318f664a8e1 12
Caconym 0:4318f664a8e1 13 void INA226::write(INA226REG reg, short value)
Caconym 0:4318f664a8e1 14 {
Caconym 0:4318f664a8e1 15 shortToChar stc;
Caconym 0:4318f664a8e1 16 char cmd[3];
Caconym 0:4318f664a8e1 17 stc.u16 = value;
Caconym 0:4318f664a8e1 18
Caconym 0:4318f664a8e1 19 cmd[0] = reg;
Caconym 0:4318f664a8e1 20 cmd[1] = stc.u8[1];
Caconym 0:4318f664a8e1 21 cmd[2] = stc.u8[0];
Caconym 0:4318f664a8e1 22
Caconym 0:4318f664a8e1 23 i2c->write(i2cAddress,cmd,3);
Caconym 0:4318f664a8e1 24 }
Caconym 0:4318f664a8e1 25
Caconym 0:4318f664a8e1 26 short INA226::read(INA226REG reg)
Caconym 0:4318f664a8e1 27 {
Caconym 0:4318f664a8e1 28 shortToChar stc;
Caconym 0:4318f664a8e1 29
Caconym 0:4318f664a8e1 30 char cmd[2];
Caconym 0:4318f664a8e1 31 cmd[0] = reg;
Caconym 0:4318f664a8e1 32 i2c->write(i2cAddress,cmd,1);
Caconym 0:4318f664a8e1 33
Caconym 0:4318f664a8e1 34 i2c->read(i2cAddress, cmd, 2);
Caconym 0:4318f664a8e1 35 stc.u8[1] = cmd[0];
Caconym 0:4318f664a8e1 36 stc.u8[0] = cmd[1];
Caconym 0:4318f664a8e1 37
Caconym 0:4318f664a8e1 38 return (stc.u16);
Caconym 0:4318f664a8e1 39 }