I2C Buspirate Python3

test.py

from I2C import *
import time

timestring = time.strftime("%Y-%m-%d %H:%M:%S")
i2caddr = 0x0B # Slave address of battery controller

def get_word(i2c, i2caddr, addr):
    """ Reads two byte value (big-endian) from address addr """
    i2c.send_start_bit();
    stat = i2c.bulk_trans(2, [i2caddr<<1, addr]);
    i2c.send_start_bit();
    stat += i2c.bulk_trans(1, [i2caddr<<1 | 1]);
    rh = i2c.read_byte();
    i2c.send_ack();
    rl = i2c.read_byte();
    i2c.send_nack();
    i2c.send_stop_bit();
    #if stat.find(chr(0x01)) != -1:
        #raise IOError, "I2C command on address 0x%02x not acknowledged!"%(i2caddr);
    return ord(rl)*256+ord(rh);

i2c = I2C("/dev/buspirate", 115200)

if i2c.BBmode():
    pass
else:
    fatalError("Can't set binmode on Buspirate!")

if i2c.enter_I2C():
    pass
else:
    fatalError("Can't set raw mode on Buspirate!")

if not i2c.cfg_pins(I2CPins.POWER | I2CPins.PULLUPS):
    fatalError("Failed to set I2C peripherals on BusPirate!")

if not i2c.set_speed(I2CSpeed._50KHZ):
    fatalError("Can't set I2C speed on Buspirate!")

temp =       float(get_word(i2c, i2caddr, 0x08) * 0.1 -273.2)
desVolt =    float(get_word(i2c, i2caddr, 0x19) * 0.001)
volt =       float(get_word(i2c, i2caddr, 0x09) * 0.001)
current =    float(get_word(i2c, i2caddr, 0x0a) * 0.001)
avgCurrent = float(get_word(i2c, i2caddr, 0x0b) * 0.001)
maxError =   int(get_word(i2c, i2caddr, 0x0c))
relChg =     int(get_word(i2c, i2caddr, 0x0d))
absChg =     int(get_word(i2c, i2caddr, 0x0e))
remCap =     float(get_word(i2c, i2caddr, 0x0f) *0.001)
fullCap =    float(get_word(i2c, i2caddr, 0x10) *0.001)
desCap =     float(get_word(i2c, i2caddr, 0x18) *0.001)
cycles =     int(get_word(i2c, i2caddr, 0x17))
serNr =      int(get_word(i2c, i2caddr, 0x1c))

#date calc
date  = get_word(i2c, i2caddr, 0x1b)
year  = int(((date & 0b1111111000000000) >> 9) + 1980)
month = int(((date & 0b0000000111100000) >> 5))
day   = int(((date & 0b0000000000011111) >> 0))

print ("Current Time:   ", timestring)
print ("Temperature:    ", temp, " Celsius")
print ("")
print ("DesignVoltage:  ", desVolt, " V")
print ("Voltage:        ", volt, " V")
print ("")
print ("Current:        ", current, " A")
print ("AverageCurrent: ", avgCurrent, " A")
print ("")
print ("MaxError:       ", maxError, " %")
print ("RelCharge:      ", relChg, " %")
print ("AbsCharge:      ", absChg, " %")
print ("")
print ("RemainingCap:   ", remCap, " Ah")
print ("FullChargeCap:  ", fullCap, " Ah")
print ("DesignCap:      ", desCap, " Ah")
print ("CycleCount:     ", cycles, " ")
print ("")
print ("SerialNR:       ", serNr, "  ")
print ("ProdDate:       ", year, month, day)

Thats the output:

onny@onny ~/projects/Buspirate-python3-i2c (git)-[master] % python test.py
Current Time:    2015-07-14 12:23:37
Temperature:     26.30000000000001  Celsius

DesignVoltage:   11.1  V
Voltage:         11.259  V

Current:         65.402  A
AverageCurrent:  65.402  A

MaxError:        26  %
RelCharge:       60  %
AbsCharge:       48  %

RemainingCap:    3.4210000000000003  Ah
FullChargeCap:   5.727  Ah
DesignCap:       7.2  Ah
CycleCount:      60  

SerialNR:        1168  
ProdDate:        2010 1 9