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added the unexport_all() function to CHIP_IO.Utilities to address #18

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This commit is contained in:
Robert Wolterman
2016-12-31 02:09:30 +00:00
parent 7d91bbc47e
commit 993ea29213
1 changed files with 13 additions and 0 deletions
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13
CHIP_IO/Utilities.py
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@ -25,6 +25,8 @@
# and for figuring out the ADC setup on the AXP-209
import subprocess
import glob
import re
# Set the 1.8V-pin on the CHIP U13-header to given voltage
# Return False on error
@ -64,3 +66,14 @@ def disable_1v8_pin():
subprocess.call('/usr/sbin/i2cset -f -y 0 0x34 0x91 0x05', shell=True)
# Then we have to write 0x07 to AXP-209 Register 0x90
subprocess.call('/usr/sbin/i2cset -f -y 0 0x34 0x90 0x07', shell=True)
# Unexport All
def unexport_all():
gpios = glob.glob("/sys/class/gpio/gpio[0-9]*")
for g in gpios:
tmp = g.split("/")
gpio = tmp[4]
num = re.sub("[a-z]","",gpio)
cmd = "echo " + num + " > /sys/class/gpio/unexport"
subprocess.Popen(cmd,shell=True, stdout=subprocess.PIPE)