undeleted the right file and deleted the wrong one... my bad

scripts/configurePins.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+"""Cape of Stomping Pin Configurationist
+
+Usage:
+  ./configurePins.py [options]
+
+Options:
+  -h, --help            Show this help screen.
+  --version             Show the version.
+  --firmware=<firmware> The name of the device tree overlay.  [default: thigh_bone]
+  --gpioroot=<gpioroot> The location of the GPIO control directories.  [default: /sys/class/gpio]
+  --pwmperiod=<period>  The period of the PWM signal.  [default: 5000000]
+  --pwmroot=<pwmroot>   The location of the PWM control directories.  [default: /sys/class/pwm]
+"""
+  # --ainroot=<ainroot>   The location of the AIN raw files.  [default: /sys/devices/platform/ocp/44e0d000.tscadc/TI-am335x-adc/iio:device0]
+
+import logging
+import os
+import time
+
+logging.info("Starting logger...")
+log = logging.getLogger(__name__)
+
+def firmwareLoaded(slots, firmwareName):
+  log.debug("Checking for existing device tree overlay")
+  with open(slots) as s:
+    return firmwareName in s.read()
+
+def loadFirmware(slots, firmwareName):
+  log.info("Loading " + firmwareName + " overlay")
+  with open(slots, "w") as s:
+    s.write(firmwareName)
+
+def pwmChipsAvailable(pwmroot):
+  return (os.path.exists(os.path.join(pwmroot, "pwmchip0")) and
+          os.path.exists(os.path.join(pwmroot, "pwmchip2")))
+
+def pwmConfigured(pwmroot):
+  # TODO: consider checking the period
+  return (os.path.exists(os.path.join(pwmroot, "pwmchip0", "pwm0")) and
+          os.path.exists(os.path.join(pwmroot, "pwmchip0", "pwm1")) and
+          os.path.exists(os.path.join(pwmroot, "pwmchip2", "pwm0")) and
+          os.path.exists(os.path.join(pwmroot, "pwmchip2", "pwm1")))
+
+def configurePwm(pwmroot, period):
+  configurePwmChip(pwmroot, "pwmchip0", period)
+  configurePwmChip(pwmroot, "pwmchip2", period)
+  with open("/sys/class/gpio/gpio27/value", "w") as f:
+    f.write("1")
+
+def configurePwmChip(pwmroot, chip, period):
+  if os.path.exists(os.path.join(pwmroot, chip)):
+    configurePwmChannel(pwmroot, chip, "0", period)
+    configurePwmChannel(pwmroot, chip, "1", period)
+  else:
+    log.error(chip + " is not present, is the device tree overlay loaded?")
+
+def configurePwmChannel(pwmroot, chip, channelNo, period):
+  with open(os.path.join(pwmroot, chip, "export"), "w") as f:
+    f.write(channelNo)
+  channel = "pwm" + channelNo
+  with open(os.path.join(pwmroot, chip, channel, "period"), "w") as f:
+    f.write(period)
+  with open(os.path.join(pwmroot, chip, channel, "duty_cycle"), "w") as f:
+    f.write("0")
+  with open(os.path.join(pwmroot, chip, channel, "enable"), "w") as f:
+    f.write("1")
+
+def configureGpio(gpioroot, gpioNo, direction):
+  if not os.path.exists(os.path.join(gpioroot, "gpio" + gpioNo)):
+    with open(os.path.join(gpioroot, "export"), "w") as f:
+      f.write(gpioNo)
+  with open(os.path.join(gpioroot, "gpio" + gpioNo, "direction"), "w") as f:
+    f.write(direction)
+
+if __name__ == '__main__':
+  from docopt import docopt
+  args = docopt(__doc__, version="Pin Configurationist v0.1")
+
+  slots = "/sys/devices/platform/bone_capemgr/slots"  # TODO: make this an arg
+  firmware = args["--firmware"]
+  if not firmwareLoaded(slots, firmware):
+    loadFirmware(slots, firmware)
+
+  pwmroot = args["--pwmroot"]
+  # await the pwm chips (loading a device tree can take some milliseconds)
+  overlayWaitTimerStart = time.time()
+  while not pwmChipsAvailable(pwmroot) and time.time() - overlayWaitTimerStart < 2:
+    time.sleep(0.1)
+
+  gpioroot = args["--gpioroot"]
+  configureGpio(gpioroot, "26", "in")  # P8_14
+  configureGpio(gpioroot, "27", "out")  # P8_17
+  configureGpio(gpioroot, "31", "in")  # P9_13
+
+  if not pwmConfigured(pwmroot):
+    configurePwm(pwmroot, args["--pwmperiod"])

scripts/specializeBone.py

@@ -27,3 +27,4 @@ def disableNtpd():
 if __name__ == '__main__':
   from docopt import docopt
   args = docopt(__doc__, version="Bone Specializer v0.1")
+  print args