def analogRead0(self):
    self.i2c.writeReg8(self.dev, 0x48,0x40)
    self.i2c.readReg8(self.dev,0x48)    #read dummy
    return self.i2c.readReg8(self.dev,0x48)

def analogRead1(self):
    self.i2c.writeReg8(self.dev, 0x48,0x41)
    self.i2c.readReg8(self.dev,0x48)    #read dummy
    return self.i2c.readReg8(self.dev,0x48)

def analogRead2(self):
    self.i2c.writeReg8(self.dev, 0x48,0x42)
    self.i2c.readReg8(self.dev,0x48)    #read dummy
    return self.i2c.readReg8(self.dev,0x48)

def analogRead3(self):
    self.i2c.writeReg8(self.dev, 0x48,0x43)
    self.i2c.readReg8(self.dev,0x48)    #read dummy
    return self.i2c.readReg8(self.dev,0x48)