analog mouse demo

analog mouse demo from ATMakers for TRRS Trinkey

TRRS_Trinkey_Demos/CircuitPython_Analog_Mouse/code.py

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+# SPDX-FileCopyrightText: 2024 Bill Binko
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+import analogio
+import digitalio
+import usb_hid
+from adafruit_hid.mouse import Mouse
+# pylint: disable=wildcard-import, line-too-long
+#import some settings that are specific to joystick/platform
+from settings import *
+
+#Calculated value from imported settings
+centerVert = int((highVert - lowVert)/2.0)
+deadVert = abs((highVert - lowVert)*deadPct)
+
+centerHor = int((highHor - lowHor)/2.0)
+deadHor = abs((highHor - lowHor)*deadPct)
+
+#Create a HID Mouse device
+mouse = Mouse(usb_hid.devices)
+
+#Setup the RING_2 as Ground
+ground = digitalio.DigitalInOut(board.RING_2)
+ground.direction=digitalio.Direction.OUTPUT
+ground.value = False
+#And SLEEVE as VCC (3.3V)
+vcc = digitalio.DigitalInOut(board.SLEEVE)
+vcc.direction=digitalio.Direction.OUTPUT
+vcc.value = True
+
+#setup the switch on the tip to detect a plug being inserted
+switch = digitalio.DigitalInOut(board.TIP_SWITCH)
+switch.direction=digitalio.Direction.OUTPUT
+switch.value=False
+#These values shouldn't need changing w/Joystick changes
+switchMin = 500
+switchMax = 5000
+
+#Two analog inputs for TIP and RING_1
+hor = analogio.AnalogIn(board.TIP)
+vert = analogio.AnalogIn(board.RING_1)
+
+#A convenience cunction similar to Arduino's mapping function
+def range_map(value, in_min, in_max, out_min, out_max):
+    return int(max(out_min,min(out_max,(value - in_min) * (out_max - out_min) // (in_max - in_min) + out_min)))
+
+#Start Main Loop
+while True:
+    #Check to be sure cord is plugged in
+    switch.value=False #Start with TIP_SWITCH pulled Low
+    if hor.value < switchMin: #TIP is pulled Low
+        switch.value = True #change TIP_SWITCH pin to high
+        if hor.value > switchMax: #TIP is now pulled High
+            print("no plug")
+            time.sleep(.5) #sleep when there's no plug
+            continue
+
+    #Ok, the switch is inserted, start reading/processing joystick motions
+    horVal = hor.value
+    vertVal = vert.value
+#    print((horVal, vertVal,))
+
+    #ignore any motions inside the center dead zone (default 10% of full throw)
+    if abs(centerHor - horVal) > deadHor or abs(centerVert - vertVal) > deadVert:
+        #map X and Y to the analog inputs (settings.py sets these values)
+        mouse_x = range_map(horVal, lowHor, highHor, -maxMouseMove, maxMouseMove)
+        mouse_y = range_map(vertVal, lowVert, highVert, -maxMouseMove, maxMouseMove)
+
+        if mouse_x != 0 or mouse_y != 0: #don't bother moving if both 0
+            mouse.move(invertHor * mouse_x, invertVert * mouse_y)
+
+    #wait a bit to not flood the USB port
+    time.sleep(0.025)

TRRS_Trinkey_Demos/CircuitPython_Analog_Mouse/settings.py

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+# SPDX-FileCopyrightText: 2024 Bill Binko
+# SPDX-License-Identifier: MIT
+
+#Customizable per Analog Joystick - these are good for Adafruit Thumbsticks to start
+#How big the "dead zone" is in the center of the joystick
+deadPct = .10
+
+#Vertical limits
+#Reading at "down"
+lowVert = 0
+#"up"
+highVert = 65000
+#set to -1 to invert the vertical axis
+invertVert = -1
+
+#Horizontal limits
+lowHor= 0
+highHor = 65000
+#set to -1 to invert the horizontal axis
+invertHor = 1
+
+#How much to move a mouse a full-throw
+#(10 works well on a PC, and 2 is good for iOS AssitiveTouch)
+maxMouseMove=8