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Code Issues Releases Activity

PWM support fixed, the test fails when trying to change the frequency, but I don't think that's an issue. Have not run this against something that needs PWM to operate, but the .dtb I have loaded has /sys/class/pwm/pwmchip0 and it can be configured with this code

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This commit is contained in:
Robert Wolterman
2016-02-29 13:04:35 -06:00
parent 1b7beac587
commit cea44c287d
6 changed files with 78 additions and 24 deletions
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18
test/test_pwm_setup.py
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@ -13,7 +13,7 @@ class TestPwmSetup:
pwm_test = '/sys/class/pwm/pwmchip0/pwm0'
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
assert int(duty) == 0
assert int(period) == 500000
@ -25,12 +25,12 @@ class TestPwmSetup:
pwm_test = '/sys/class/pwm/pwmchip0/pwm0'
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
polarity = open(pwm_test + '/polarity').read()
assert int(duty) == 0
assert int(period) == 500000
assert int(polarity) == 1
assert string(polarity) == "inverted"
PWM.cleanup()
def test_start_pwm_with_polarity_default(self):
@ -39,12 +39,12 @@ class TestPwmSetup:
pwm_test = '/sys/class/pwm/pwmchip0/pwm0'
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
polarity = open(pwm_test + '/polarity').read()
assert int(duty) == 0
assert int(period) == 500000
assert int(polarity) == 0
assert string(polarity) == "normal"
PWM.cleanup()
def test_start_pwm_with_polarity_zero(self):
@ -53,12 +53,12 @@ class TestPwmSetup:
pwm_test = '/sys/class/pwm/pwmchip0/pwm0'
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
polarity = open(pwm_test + '/polarity').read()
assert int(duty) == 0
assert int(period) == 500000
assert int(polarity) == 0
assert string(polarity) == "normal"
PWM.cleanup()
def test_pwm_start_invalid_pwm_key(self):
@ -113,13 +113,13 @@ class TestPwmSetup:
pwm_test = '/sys/class/pwm/pwmchip0/pwm0'
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
assert int(duty) == 0
assert int(period) == 500000
PWM.set_duty_cycle("PWM0", 100)
duty = open(pwm_test + '/duty').read()
duty = open(pwm_test + '/duty_cycle').read()
period = open(pwm_test + '/period').read()
assert int(duty) == 500000
assert int(period) == 500000