Channels with Different shunt resistors

[jmfloyd]

Code assumes a common shunt resistor value across all channels. May not be the case would be good to generalise the code. Eg main battery usage current versus solar charging current could be 10x different, so use different shunt values.

[albmef]

hi
quick fix:

def __init__(self, twi=1, addr=INA3221_ADDRESS, shunt_resistor = SHUNT_RESISTOR_VALUE  ):
    self._bus = smbus.SMBus(twi)
    self._addr = addr
    self._shunt_resistor = shunt_resistor              <--------------------add this line---------------
    config = INA3221_CONFIG_ENABLE_CHAN1 |		\
                INA3221_CONFIG_ENABLE_CHAN2 |	\
                INA3221_CONFIG_ENABLE_CHAN3 |	\
                INA3221_CONFIG_AVG1 |		\
                INA3221_CONFIG_VBUS_CT2 |		\
                INA3221_CONFIG_VSH_CT2 |		\
                INA3221_CONFIG_MODE_2 |		\
                INA3221_CONFIG_MODE_1 |		\
                INA3221_CONFIG_MODE_0



def getCurrent_mA(self, channel):
#Gets the current value in mA, taking into account the config settings and current LSB
	
    valueDec = self.getShuntVoltage_mV(channel)/ self._shunt_resistor             <---------modify this line------- 
    return valueDec;