def start(self):
insertDebugLog(NOTICE, "Starting. Runtime: %ds, Actuate time: %ds, Max strain: %d, Sampling Freq: %d." % \
(self.max_time, self.actuate_time, self.max_loadcell, \
self.heater_period), PAYLOAD, int(time.time()))
print("Starting payload...")
print("Runtime: %ds, Actuate time: %ds, Max strain: %d, Sampling period: %ds" % \
(self.max_time, self.actuate_time, self.max_loadcell, \
self.heater_period))
if not self.check_initial_conditions():
return False
self.lock.acquire()
self.set_power(True)
self.init_sensors()
start_time = time.time()
elapsed = 0
while True:
heater_temp = 0
if elapsed <= self.actuate_time or heater_temp < self.max_temp:
self.set_heaters(self.experiment, True)
time.sleep(self.heater_period)
else:
print("No longer turning heaters on")
time.sleep(self.heater_period)
self.set_heaters(self.experiment, False)
self.set_heaters(self.experiment, False)
elapsed = time.time() - start_time
off_time = time.time()
print("[" + str(round(elapsed, 3)) + " s] ", end='')
strain, force, adc_temp = SensorManager.read_adc(self.experiment, ADC)
heater_temp = SensorManager.read_temp_sensor(self.temp_sensor)
print(strain, force, adc_temp, heater_temp)
sleep_time = time.time() - off_time
elapsed = time.time() - start_time
time.sleep(abs(self.heater_period - sleep_time))
elapsed = time.time() - start_time
strain, force, adc_temp = SensorManager.read_adc(self.experiment, ADC)
heater_temp = SensorManager.read_temp_sensor(self.temp_sensor)
print("[" + str(round(elapsed, 3)) + " s] ", end='')
print(strain, force, adc_temp, heater_temp)
if self.is_end_condition(strain, elapsed):
break
if self.experiment:
exp = 'B'
else:
exp = 'A'
insertPayloadLog(int(start_time), int(time.time()), exp)
self.end()
self.lock.release()
return True
def main():
SensorManager.gpio_output(PAYLOAD_EN_GPIO, ON)
SensorManager.init_adc(ADC)
start_time = time.time()
try:
while True:
strain, force, adc_temp = SensorManager.read_adc(0, ADC)
elapsed = time.time() - start_time
print("[" + str(round(elapsed, 3)) + " s] ")
print(strain, force, adc_temp)
time.sleep(2)
except KeyboardInterrupt:
SensorManager.stop_adc_sensor(ADC)
SensorManager.gpio_output(PAYLOAD_EN_GPIO, OFF)
def test_adc_read(self):
experiment = 2
strain, force, adc_temp = SensorManager.read_adc(experiment, ADC)
self.assertNotEqual(strain, -1)
self.assertNotEqual(force, -1)
self.assertNotEqual(adc_temp, -1)
