def t2():
global t2_count
print("PWM dutycycle/range/frequency tests.")
pigpio.set_PWM_range(GPIO, 255)
pigpio.set_PWM_frequency(GPIO, 0)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 1, f, 10, 0, "set PWM range, set/get PWM frequency")
t2cb = pigpio.callback(GPIO, pigpio.EITHER_EDGE, t2cbf)
pigpio.set_PWM_dutycycle(GPIO, 0)
time.sleep(0.5) # allow old notifications to flush
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 2, f, 0, 0, "set PWM dutycycle, callback")
pigpio.set_PWM_dutycycle(GPIO, 128)
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 3, f, 40, 5, "set PWM dutycycle, callback")
pigpio.set_PWM_frequency(GPIO, 100)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 4, f, 100, 0, "set/get PWM frequency")
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 5, f, 400, 1, "callback")
pigpio.set_PWM_frequency(GPIO, 1000)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 6, f, 1000, 0, "set/get PWM frequency")
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 7, f, 4000, 1, "callback")
r = pigpio.get_PWM_range(GPIO)
CHECK(2, 8, r, 255, 0, "get PWM range")
rr = pigpio.get_PWM_real_range(GPIO)
CHECK(2, 9, rr, 200, 0, "get PWM real range")
pigpio.set_PWM_range(GPIO, 2000)
r = pigpio.get_PWM_range(GPIO)
CHECK(2, 10, r, 2000, 0, "set/get PWM range")
rr = pigpio.get_PWM_real_range(GPIO)
CHECK(2, 11, rr, 200, 0, "get PWM real range")
pigpio.set_PWM_dutycycle(GPIO, 0)
def t2():
global t2_count
print("PWM dutycycle/range/frequency tests.")
pigpio.set_PWM_range(GPIO, 255)
pigpio.set_PWM_frequency(GPIO,0)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 1, f, 10, 0, "set PWM range, set/get PWM frequency")
t2cb = pigpio.callback(GPIO, pigpio.EITHER_EDGE, t2cbf)
pigpio.set_PWM_dutycycle(GPIO, 0)
time.sleep(0.5) # allow old notifications to flush
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 2, f, 0, 0, "set PWM dutycycle, callback")
pigpio.set_PWM_dutycycle(GPIO, 128)
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 3, f, 40, 5, "set PWM dutycycle, callback")
pigpio.set_PWM_frequency(GPIO,100)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 4, f, 100, 0, "set/get PWM frequency")
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 5, f, 400, 1, "callback")
pigpio.set_PWM_frequency(GPIO,1000)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(2, 6, f, 1000, 0, "set/get PWM frequency")
time.sleep(1)
oc = t2_count
time.sleep(2)
f = t2_count - oc
CHECK(2, 7, f, 4000, 1, "callback")
r = pigpio.get_PWM_range(GPIO)
CHECK(2, 8, r, 255, 0, "get PWM range")
rr = pigpio.get_PWM_real_range(GPIO)
CHECK(2, 9, rr, 200, 0, "get PWM real range")
pigpio.set_PWM_range(GPIO, 2000)
r = pigpio.get_PWM_range(GPIO)
CHECK(2, 10, r, 2000, 0, "set/get PWM range")
rr = pigpio.get_PWM_real_range(GPIO)
CHECK(2, 11, rr, 200, 0, "get PWM real range")
pigpio.set_PWM_dutycycle(GPIO, 0)
def t3():
global t3_reset, t3_count, t3_on, t3_off
pw=[500.0, 1500.0, 2500.0]
dc=[0.2, 0.4, 0.6, 0.8]
print("PWM/Servo pulse accuracy tests.")
t3cb = pigpio.callback(GPIO, pigpio.EITHER_EDGE, t3cbf)
t = 0
for x in pw:
t += 1
pigpio.set_servo_pulsewidth(GPIO, x)
time.sleep(1)
t3_reset = True
time.sleep(4)
c = t3_count
on = t3_on
off = t3_off
CHECK(3, t, int((1E3*(on+off))/on), int(2E7/x), 1, "set servo pulsewidth")
pigpio.set_servo_pulsewidth(GPIO, 0)
pigpio.set_PWM_frequency(GPIO, 1000)
f = pigpio.get_PWM_frequency(GPIO)
CHECK(3, 4, f, 1000, 0, "set/get PWM frequency")
rr = pigpio.set_PWM_range(GPIO, 100)
CHECK(3, 5, rr, 200, 0, "set PWM range")
t = 5
for x in dc:
t += 1
pigpio.set_PWM_dutycycle(GPIO, x*100)
time.sleep(1)
t3_reset = True
time.sleep(2)
c = t3_count
on = t3_on
off = t3_off
CHECK(3, t, int((1E3*on)/(on+off)), int(1E3*x), 1, "set PWM dutycycle")
pigpio.set_PWM_dutycycle(GPIO, 0)
if sum < -50:
sum = -50
#print("actualTemp %4.2f TempDiff %4.2f pDiff %4.2f iDiff %4.2f fanSpeed %5d" % (actualTemp,diff,pDiff,iDiff,fanSpeed))
pigpio.set_PWM_dutycycle(gpiochan, fanSpeed)
return ()
def fanOFF():
pigpio.set_PWM_dutycycle(gpiochan, 0) # switch fan off
return ()
def signalHandler(_signo, _stack_frame):
fanOFF()
sys.exit(0)
try:
signal.signal(signal.SIGTERM, signalHandler)
pigpio = pigpio.pi()
pigpio.set_PWM_frequency(gpiochan, 23000)
print(pigpio.get_PWM_frequency(gpiochan))
pigpio.set_PWM_range(gpiochan, 100)
fanOFF()
while True:
handleFan()
sleep(3) # Read the temperature every 3 sec
except KeyboardInterrupt: # trap a CTRL+C keyboard interrupt
fanOFF()
# GPIO.cleanup() # resets all GPIO ports used by this program
def pigpio_init_pwm(self):
pigpio.set_PWM_frequency(self.pin, 50) # 50Hz pulses
pigpio.set_PWM_range(self.pin, 20000) # 1,000,000 / 50 = 20,000us for 100% duty cycle
self.logger.info("PWM cycle frequency: %dHz" % pigpio.get_PWM_frequency(self.pin))
def init_channel(pin):
pigpio.set_PWM_frequency(pin, 50)
println("PWM cycle frequency: %dHz" % pigpio.get_PWM_frequency(pin))
pigpio.set_PWM_range(pin, RANGE)
