first commit step switch pico demo code

Author: jedgarpark

Step_Switch_Pico_Demo/code.py

@@ -0,0 +1,127 @@
+# SPDX-FileCopyrightText: 2022 john park for Adafruit Industries
+# SPDX-License-Identifier: MIT
+# Pico Four Step Switch Keypad Demo
+import time
+import board
+from digitalio import Direction, DigitalInOut, Pull
+from adafruit_debouncer import Debouncer
+
+board_led = DigitalInOut(board.LED)
+board_led.direction = Direction.OUTPUT
+board_led.value = True
+
+switch_pins = (board.GP6, board.GP7, board.GP8, board.GP9)
+step_switches = []
+for switch_pin in switch_pins:
+    tmp_switch_pin = DigitalInOut(switch_pin)
+    tmp_switch_pin.pull = Pull.UP
+    step_switches.append(Debouncer(tmp_switch_pin))
+
+led_pins = (board.GP2, board.GP3, board.GP4, board.GP5)
+leds = []
+for led_pin in led_pins:
+    tmp_led_pin = DigitalInOut(led_pin)
+    tmp_led_pin.direction = Direction.OUTPUT
+    tmp_led_pin.value = False
+    leds.append(tmp_led_pin)
+
+def blink_led(led_num, pause, repeat):
+    for __ in range(repeat * 2):
+        leds[led_num].value = not leds[led_num].value
+        time.sleep(pause)
+
+def blink_all_leds(pause, repeat):
+    for __ in range(repeat * 2):
+        for led in leds:
+            led.value = not led.value
+        time.sleep(pause)
+
+blink_all_leds(0.1, 4)
+
+
+mode_picked = False  # state of mode selection
+mode_choice = 0  # MIDI mode, desk switcher mode, etc.
+modes = (0, 1, 2, 3)
+mode_names = ("MIDI", "DESK", "SELECTOR", "COPY-PASTE")
+
+print("Select the mode by pressing a button...")
+while not mode_picked:  # program waits for a mode to be picked
+    for i in range(len(step_switches)):
+        step_switches[i].update()
+        if step_switches[i].fell:
+            mode_choice = i
+            print(mode_names[mode_choice], "mode")
+            mode_picked = True
+
+if mode_choice == 0:  # MIDI mode
+    import usb_midi
+    import adafruit_midi
+    from adafruit_midi.control_change import ControlChange
+    midi = adafruit_midi.MIDI(
+                            midi_in=usb_midi.ports[0],
+                            in_channel=0,
+                            midi_out=usb_midi.ports[1],
+                            out_channel=0
+    )
+    cc_num = [16, 17, 18, 19]
+    cc_state = [False, False, False, False]
+
+else:  # HID modes
+    import usb_hid
+    from adafruit_hid.keyboard import Keyboard
+    from adafruit_hid.keycode import Keycode
+
+if mode_choice == 1:  # Mac Desktop switcher mode
+    kpd = Keyboard(usb_hid.devices)
+    MODIFIER = Keycode.CONTROL
+    KEYMAP = (
+        ("Desktop 1", [MODIFIER, Keycode.ONE]),
+        ("Desktop 2", [MODIFIER, Keycode.TWO]),
+        ("Desktop 3", [MODIFIER, Keycode.THREE]),
+        ("Desktop 4", [MODIFIER, Keycode.FOUR]),
+    )
+
+if mode_choice == 2:  # SELECTOR mode for game weapon slot, Wirecast, etc.
+    kpd = Keyboard(usb_hid.devices)
+    MODIFIER = Keycode.SHIFT
+    KEYMAP = (
+        ("Selector 1", [MODIFIER, Keycode.ONE]),
+        ("Selector 2", [MODIFIER, Keycode.TWO]),
+        ("Selector 3", [MODIFIER, Keycode.THREE]),
+        ("Selector 4", [MODIFIER, Keycode.FOUR]),
+    )
+
+if mode_choice == 3:  # Copy/Paste mode
+    kpd = Keyboard(usb_hid.devices)
+    # Choose the correct modifier key for Windows or Mac.
+    # MODIFIER = Keycode.CONTROL  # For Windows
+    MODIFIER = Keycode.COMMAND
+    KEYMAP = (
+        ("wire 1", [MODIFIER, Keycode.A]),  # select all
+        ("wire 2", [MODIFIER, Keycode.X]),  # cut
+        ("wire 3", [MODIFIER, Keycode.C]),  # copy
+        ("wire 4", [MODIFIER, Keycode.V]),  # paste
+    )
+
+blink_led(mode_choice, 0.1, 3)
+
+
+while True:
+    for i in range(len(step_switches)):
+        step_switches[i].update()
+        if step_switches[i].fell:
+            print(i, "pressed")
+            if mode_choice == 0:
+                leds[i].value = not leds[i].value
+                if cc_state[i] is False:
+                    midi.send(ControlChange(cc_num[i], 127))
+                    cc_state[i] = True
+                else:
+                    midi.send(ControlChange(cc_num[i], 0))
+                    cc_state[i] = False
+            else:
+                print(KEYMAP[i][0])
+                kpd.send(*KEYMAP[i][1])
+                for switch_led in leds:  # blank the LEDs first
+                    switch_led.value = False
+                leds[i].value = True  # light selected switch LED