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import nxt.locator
from nxt.sensor.hitechnic import SuperPro
"""
Experiment 7, adapted from the SuperPro demo
For this demo, connect a LED between B4 and GND. Connect the magnetic hall-effect sensor
(A3212EUA-T) as follows:
* Pin 1: 3V
* Pin 2: GND
* Pin 3: B0
Connect B0 to 3V with a 10kOhm resistor
Note: My magnetic hall effect sensor appears to be broken, so I couldn't really test
this. RIP
"""
# Find NXT, configure sensor
with nxt.locator.find() as brick:
pro = SuperPro(brick, nxt.sensor.Port.S1)
# Configure B4 as output
pro.set_digital_modes_byte(0b00010000)
pro.set_digital_byte(0x00)
while True:
try:
# Read B0 (magnet signal is inverted, low = magnet, then write back B4 with
# the value.
hall_effect_sensor = pro.get_digital()["b0"]
print(f"Magnet: {not hall_effect_sensor}")
pro.set_digital_byte((not hall_effect_sensor) << 4)
except KeyboardInterrupt:
break
# When program stopped, turn off outputs
pro.set_digital_byte(0x00)
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