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Update ADC test to handle Linux 4.1+ kernel #102

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Merged
merged 1 commit into from
Jun 3, 2016
Merged

Update ADC test to handle Linux 4.1+ kernel #102

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24 changes: 16 additions & 8 deletions test/test_adc.py
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Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
#debian@beaglebone:~/adafruit-beaglebone-io-python/test$ cat test_adc.py
import pytest
import os

import platform
import Adafruit_BBIO.ADC as ADC


def teardown_module(module):
pass
#ADC.cleanup()
Expand All @@ -17,14 +19,20 @@ def test_read_raw_adc_no_setup(self):
ADC.read_raw("P9_40")

def test_setup_adc(self):
ADC.setup()

files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
helper_path = ocp+'/'+[s for s in files if s.startswith('helper')][0]
ADC.setup()

assert os.path.exists(helper_path + "/AIN1")
kernel = platform.release()
if kernel >= '4.1.0':
test_path = "/sys/bus/iio/devices/iio:device0/in_voltage1_raw"
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
helper_path = ocp+'/'+[s for s in files if s.startswith('helper')][0]
test_path = helper_path + "/AIN1"

assert os.path.exists(test_path);
#ADC.cleanup()

def test_read_adc(self):
Expand All @@ -50,4 +58,4 @@ def test_many_read_adc(self):
start = time.time()
value = -1
value = ADC.read("AIN1")
assert value != -1
assert value != -1