To test BeagleBone Green

beaglebone_green_test.py

'''
BeagleBone Green Test

apt-get install build-essential python-dev python-setuptools python-pip python-smbus -y
pip install Adafruit_BBIO

'''


import Adafruit_BBIO.GPIO as GPIO
import Adafruit_BBIO.ADC as ADC
from Adafruit_I2C import Adafruit_I2C as I2C 
import subprocess

            
def check_voltage():
    VOLTAGES = [['AIN0', 0.57, 0.63],
                ['AIN2', 0.85, 0.95],
                ['AIN4', 1.14, 1.26],
                ['AIN6', 1.42, 1.58],
                ['AIN1', 1.04, 1.16], # VDD_3V3B / 3
                ['AIN3', 1.58, 1.75], # VDD_5V   / 3
                ['AIN5', 1.65, 1.69]] # SYS_5V   / 3
                
    ADC.setup()
    for v in VOLTAGES:
        ain = ADC.read(v[0])
        if ain < v[1] or ain > v[2]:
            print('%f (%s) is out of range: %f ~ %f.' % (ain, v[0], v[1], v[2]))
            
def check_io():
    IO_GROUP1 = ['P8_3', 'P8_6', 'P8_7', 'P8_9', 'P8_12', 'P8_13', 'P8_15', 'P8_18', 
                 'P8_21', 'P8_22', 'P8_25', 'P8_26', 'P8_27', 'P8_29', 'P8_31',
                 'P8_35', 'P8_36', 'P8_37', 'P8_40', 'P8_42', 'P8_43', 'P8_45',
                 'P9_13', 'P9_16', 'P9_23', 'P9_26', 'P9_27', 'P9_30', 'P9_31']             
    IO_GROUP2 = ['P8_4', 'P8_5', 'P8_8', 'P8_10', 'P8_11', 'P8_14', 'P8_16', 'P8_17',
                 'P8_19', 'P8_20', 'P8_23', 'P8_24', 'P8_28', 'P8_30', 'P8_32',
                 'P8_33', 'P8_34', 'P8_38', 'P8_39', 'P8_41', 'P8_44', 'P8_46',
                 'P9_11', 'P9_12', 'P9_14', 'P9_15', 'P9_24', 'P9_25', 'P9_28',
                 'P9_29', 'P9_41', 'P9_42']             
    IO_GROUP3 = ['P9_18', 'P9_22']
    IO_GROUP4 = ['P9_17', 'P9_21']
    EMMC_RESET = 'GPIO1_20'
    
    # put eMMC in reset
    GPIO.setup(EMMC_RESET, GPIO.OUT)
    GPIO.output(EMMC_RESET, GPIO.LOW)
    
    GPIO.setup(IO_GROUP1[0], GPIO.OUT)
    for pin in IO_GROUP1[1:]:
        GPIO.setup(pin, GPIO.IN)
        
    GPIO.output(IO_GROUP1[0], GPIO.HIGH)
    for pin in IO_GROUP1[1:]:
        if not GPIO.input(pin):
            # print('%s is not connected' % pin)
            pass

            
def check_power_ex():
    import powerstatus
    
    powerstatus.show_reg(powerstatus.PGOOD, "PGOOD", powerstatus.PGOOD_LABELS)
    status = powerstatus.query(powerstatus.PGOOD)
    
# display value of each bit in the register, along with its label
def describe_bits(val,labels):
    for x in range(0,len(labels)):
        if(not labels[x]): # skip None labels
            continue
        msk = 1<<x
        print "%s = %d"%(labels[x],(val&msk)!=0)

def check_power():
    STATUS_LABELS = ["Push Button", None, "USB Power", "AC Power"] # skip the rest
    PGOOD_LABELS = ["LDO2 power-good","LDO1 power-good","DCDC3 power-good","DCDC2 power-good","DCDC1 power-good", "LDO4 power-good","LDO3 power-good"]
    
    pgood = int(subprocess.check_output(['i2cget', '-y' ,'-f', '0', '0x24', '0xC']).strip(), 16)
    status = int(subprocess.check_output(['i2cget', '-y' ,'-f', '0', '0x24', '0xA']).strip(), 16)
    
    describe_bits(pgood, PGOOD_LABELS)
    describe_bits(status, STATUS_LABELS)
    
    if pgood != 0x7F:
        return False
        
    return True
    
if __name__ == '__main__':
    check_power()
    check_voltage()
    check_io()