def api_softpwm(self, pin, command, option, req_method, req_args):
resp = copy.deepcopy(self.CHIP_INFO)
resp["connected"] = True
# Figure out our command
if command == "start" and req_method == 'GET':
# Get the arguments
duty_cycle = req_args.get('duty_cycle', 25.0)
frequency = req_args.get('frequency', 35.0)
polarity = req_args.get('polarity', 0)
# Start the SoftPWM
SPWM.start(pin, duty_cycle, frequency, polarity)
resp[
"message"] = "Setting {0} to duty cycle: {1}, frequency: {2}, and polarity {3}".format(
pin, duty_cycle, frequency, polarity)
elif command == "stop" and req_method == 'GET':
SPWM.stop(pin)
resp["message"] = "Stopping {0}".format(pin)
elif command == "cleanup" and req_method == 'GET':
SPWM.cleanup(pin)
resp["message"] = "Cleaning up {0}".format(pin)
elif command == "duty_cycle" and req_method in ['GET', 'PUT', 'POST']:
SPWM.set_duty_cycle(pin, float(option))
resp["message"] = "Changing duty cycle on {0} to {1}".format(
pin, option)
elif command == "frequency" and req_method in ['GET', 'PUT', 'POST']:
SPWM.set_frequency(pin, float(option))
resp["message"] = "Changing duty cycle on {0} to {1}".format(
pin, option)
return jsonify(resp)
def steer_left():
SPWM.start("CSID0", 50)
SPWM.set_duty_cycle("CSID0", 0)
SPWM.set_frequency("CSID0", freq)
SPWM.start("CSID1", 50)
SPWM.set_duty_cycle("CSID1", duty * 0.75)
SPWM.set_frequency("CSID1", freq)
SPWM.start("CSID2", 50)
SPWM.set_duty_cycle("CSID2", 0)
SPWM.set_frequency("CSID2", freq)
SPWM.start("CSID3", 50)
SPWM.set_duty_cycle("CSID3", duty)
SPWM.set_frequency("CSID3", freq)
def reverse():
SPWM.start("CSID0", 50)
SPWM.set_duty_cycle("CSID0", 0)
SPWM.set_frequency("CSID0", freq)
SPWM.start("CSID1", 50)
SPWM.set_duty_cycle("CSID1", duty)
SPWM.set_frequency("CSID1", freq)
SPWM.start("CSID2", 50)
SPWM.set_duty_cycle("CSID2", 0)
SPWM.set_frequency("CSID2", freq)
SPWM.start("CSID3", 50)
SPWM.set_duty_cycle("CSID3", duty)
SPWM.set_frequency("CSID3", freq)
def __init__(self):
green = 'XIO-P0'
blue = 'XIO-P1'
red = 'XIO-P2'
frequency = 100
self.green = green
self.red = red
self.blue = blue
GPIO.cleanup(red)
GPIO.cleanup(green)
GPIO.cleanup(blue)
SPWM.start(red, 0)
SPWM.set_frequency(red, frequency)
SPWM.start(green, 0)
SPWM.set_frequency(green, frequency)
SPWM.start(blue, 0)
SPWM.set_frequency(blue, frequency)
def test_pwm_frequency_invalid_value_negative(self):
PWM.start("XIO-P7", 0)
with pytest.raises(ValueError):
PWM.set_frequency("XIO-P7", -1)
PWM.cleanup()
def test_pwm_frequency_invalid_value_string(self):
PWM.start("XIO-P7", 0)
with pytest.raises(TypeError):
PWM.set_frequency("XIO-P7", "11")
PWM.cleanup()
def test_pwm_frequency_invalid_value_negative(self):
PWM.start("XIO-P7", 0)
with pytest.raises(ValueError):
PWM.set_frequency("XIO-P7", -1)
PWM.cleanup()
def test_pwm_frequency_invalid_value_string(self):
PWM.start("XIO-P7", 0)
with pytest.raises(TypeError):
PWM.set_frequency("XIO-P7", "11")
PWM.cleanup()
GPIO.output("XIO-P0", GPIO.HIGH)
GPIO.output("XIO-P1", GPIO.LOW)
print("Testing duty cycle...")
# Test duty cycle
# for x in range(0,100):
# SPWM.set_duty_cycle("XIO-P7", x)
# print(x)
# time.sleep(.1)
# Test frequency
SPWM.set_duty_cycle("XIO-P7", 50)
print("Testing frequency at 50% duty")
for f in range(100, 5000, 100):
SPWM.set_frequency("XIO-P7", f)
print(f)
time.sleep(.1)
# Hold at high 50%
print("Holding high at 50% duty")
SPWM.set_duty_cycle("XIO-P7", 50)
SPWM.set_frequency("XIO-P7", 5000)
time.sleep(3)
# Hold at high 100%
print("Holding high at 100% duty")
SPWM.set_duty_cycle("XIO-P7", 100)
SPWM.set_frequency("XIO-P7", 5000)
SPWM.cleanup()
# ISSUE #16 VERIFICATION
try:
print(
"VERIFYING FIX FOR ISSUE #16, GPIO CONFIGURED THAT SPWM WANTS TO USE"
)
GPIO.setup(SPWMGPIO, GPIO.OUT)
SPWM.start(SPWMGPIO, 50, 1)
except Exception as e:
print("EXCEPTION: {}".format(e))
print("GPIO CLEANUP")
GPIO.cleanup()
# SETUP SOFTPWM
print("STARTING SOFTPWM TEST")
SPWM.start(SPWMGPIO, 50, 1)
SPWM.set_frequency(SPWMGPIO, 2)
# SETUP SOFTPWM RECEIVER
rcvr = SPWMReceiver(GPIO, RECEIVERGPIO, COUNT, SLEEPTIME)
rcvr.start()
time.sleep(COUNT * SLEEPTIME + 1)
# CLEANUP
print("CLEANUP")
SPWM.stop(SPWMGPIO)
SPWM.cleanup()
GPIO.cleanup()
PWMGPIO = "XIO-P7"
#PWMGPIO = "LCD-D4"
COUNT = 150
SLEEPTIME = 0.01
time.sleep(1)
# SETUP PWM
try:
print("PWM START")
#PWM.toggle_debug()
PWM.start(PWMGPIO, 50, 45, 1)
# UNCOMMENT FOR CRASH
print("PWM SET FREQUENCY")
PWM.set_frequency(PWMGPIO, 10)
# UNCOMMENT FOR CRASH
print("PWM SET DUTY CYCLE")
PWM.set_duty_cycle(PWMGPIO, 25)
#time.sleep(COUNT*SLEEPTIME + 1)
raw_input("PRESS ENTER WHEN DONE")
except:
raise
finally:
# CLEANUP
print("CLEANUP")
PWM.stop(PWMGPIO)
PWM.cleanup()