82511cc617
Reduce number of reads of ADC so that pytest will run faster. Long run time is especially annoying when using strace.
61 lines
1.5 KiB
Python
61 lines
1.5 KiB
Python
#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()
|
|
|
|
class TestAdc:
|
|
def test_read_adc_no_setup(self):
|
|
with pytest.raises(RuntimeError):
|
|
ADC.read("P9_40")
|
|
|
|
def test_read_raw_adc_no_setup(self):
|
|
with pytest.raises(RuntimeError):
|
|
ADC.read_raw("P9_40")
|
|
|
|
def test_setup_adc(self):
|
|
|
|
ADC.setup()
|
|
|
|
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):
|
|
ADC.setup()
|
|
value = -1
|
|
value = ADC.read("P9_40")
|
|
|
|
assert value != -1
|
|
|
|
def test_read_raw_adc(self):
|
|
ADC.setup()
|
|
value = -1
|
|
value = ADC.read_raw("P9_40")
|
|
|
|
assert value != -1
|
|
|
|
def test_many_read_adc(self):
|
|
import time
|
|
|
|
ADC.setup()
|
|
|
|
for x in range(0,1000):
|
|
start = time.time()
|
|
value = -1
|
|
value = ADC.read("AIN1")
|
|
assert value != -1
|