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Encoder Direction Reversed in Firmware (#17) #24

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Encoder Direction Reversed in Firmware (#17) #24

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22 changes: 22 additions & 0 deletions firmware/encoder_direction.py
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Original file line number Diff line number Diff line change
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"""
Encoder direction correction for PatternFlow firmware.

The A/B channel ordering determines count direction.
Swap channels if counting backwards.
"""
ENCODER_A_PIN = 5
ENCODER_B_PIN = 6
DIRECTION_REVERSED = True # Set False after hardware fix

def setup_encoder():
import machine
global pin_a, pin_b
pin_a = machine.Pin(ENCODER_A_PIN, machine.Pin.IN, machine.PULL_UP)
pin_b = machine.Pin(ENCODER_B_PIN, machine.Pin.IN, machine.PULL_UP)

def read_encoder_delta():
"""Returns +1 or -1 per detent based on current state."""
a = pin_a.value()
b = pin_b.value()
delta = 1 if (a != b) else -1
return -delta if DIRECTION_REVERSED else delta