# gpio.py
# Part of PyBBIO
# github.com/alexanderhiam/PyBBIO
# MIT License
#
# Beaglebone GPIO driver
import os, math, sysfs
from bbio.util import addToCleanup
from config import GET_USR_LED_DIRECTORY, GPIO, GPIO_FILE_BASE, INPUT,\
CONF_PULLUP, CONF_PULLDOWN, CONF_PULL_DISABLE,\
CONF_GPIO_INPUT, CONF_GPIO_OUTPUT, FALLING, HIGH, LOW,\
MSBFIRST
from bbio.platform.platform import detect_platform
_platform = detect_platform()
if "3.8" in _platform:
from bone_3_8 import pinmux
elif "3.2" in _platform:
from bone_3_2 import pinmux
del _platform
def getGPIODirectory(gpio_pin):
""" Returns the sysfs kernel driver base directory for the given pin. """
if 'USR' in gpio_pin:
# USR LEDs use a different driver
return GET_USR_LED_DIRECTORY(gpio_pin)
gpio_num = GPIO[gpio_pin][2]
return '%s/gpio%i' % (GPIO_FILE_BASE, gpio_num)
# github.com/alexanderhiam/PyBBIO # This library - github.com/deepakkarki # MIT License # # Beaglebone i2c driver #Note : Three i2c buses are present on the BBB; i2c-0 is used for eeprom access - so not useable # i2c-1 is loaded default; /devices/ocp.2/4819c000.i2c/i2c-1 ---- this actually is the i2c2 bus # to activate i2c1 bus; echo BB-I2C1 > /sys/devices/bone_capemgr.8/slots; will be now present at /dev/i2c-2 # reference : http://datko.net/2013/11/03/bbb_i2c/ import bbio from config import I2C from bbio.platform.platform import detect_platform _platform = detect_platform() if "3.8" in _platform: from bone_3_8.i2c_setup import i2cInit elif "3.2" in _platform: from bone_3_2.i2c_setup import i2cInit del _platform try: import smbus except: print "\n python-smbus module not found\n" print "on Angstrom Linux : ~#opkg install python-smbus\n" print "on Ubuntu, Debian : ~#apt-get install python-smbus" class _I2C_BUS(object):
# initialization for beaglebone
from bbio.platform.platform import detect_platform
PLATFORM = detect_platform()
if "3.8" in PLATFORM:
from bone_3_8 import config
from bone_3_8.adc import analogRead, inVolts
from bone_3_8.pwm import analogWrite, pwmFrequency, pwmEnable, pwmDisable
elif "3.2" in PLATFORM:
from bone_3_2 import config
from bone_3_2.adc import analogRead, inVolts
from bone_3_2.pwm import analogWrite, pwmFrequency, pwmEnable, pwmDisable
from gpio import pinMode, digitalWrite, digitalRead, toggle, pinState, \
shiftIn, shiftOut
from interrupt import attachInterrupt, detachInterrupt
from serial_port import Serial1, Serial2, Serial4, Serial5
from i2c import Wire1, Wire2
from spi import SPI0, SPI1
from api import platform_init, platform_cleanup
from config import USR0, USR1, USR2, USR3, GPIO0_2, GPIO0_3, GPIO0_4, GPIO0_5,\
GPIO0_7, GPIO0_8, GPIO0_9, GPIO0_10, GPIO0_11, GPIO0_12,\
GPIO0_13, GPIO0_14, GPIO0_15, GPIO0_20, GPIO0_22, GPIO0_23,\
GPIO0_26, GPIO0_27, GPIO0_30, GPIO0_31, GPIO1_0, GPIO1_1,\
GPIO1_2, GPIO1_3, GPIO1_4, GPIO1_5, GPIO1_6, GPIO1_7,\
GPIO1_12, GPIO1_13, GPIO1_14, GPIO1_15, GPIO1_16, GPIO1_17,\
GPIO1_18, GPIO1_19, GPIO1_28, GPIO1_29, GPIO1_30, GPIO1_31,\
# api.py # Part of PyBBIO # github.com/alexanderhiam/PyBBIO # MIT License # # Beaglebone platform API file. from bbio.platform.platform import detect_platform PLATFORM = detect_platform() if "3.8" in PLATFORM: from bone_3_8.adc import analog_init, analog_cleanup from bone_3_8.pwm import pwm_init, pwm_cleanup from serial_port import serial_cleanup elif "3.2" in PLATFORM: from bone_3_2.adc import analog_init, analog_cleanup from bone_3_2.pwm import pwm_init, pwm_cleanup from serial_port import serial_cleanup def platform_init(): analog_init() pwm_init() def platform_cleanup(): analog_cleanup() pwm_cleanup() serial_cleanup()