From 394911df7bb7013c6fdd3c78712b0d3f12c0bd41 Mon Sep 17 00:00:00 2001
From: Chris Cowley <chris@cowley.tech>
Date: Wed, 9 Jul 2025 16:37:18 +0200
Subject: [PATCH] Add Circuit python code

---
 CIRCUITPYTHON/Makefile |  2 ++
 CIRCUITPYTHON/code.py  | 56 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 CIRCUITPYTHON/Makefile
 create mode 100644 CIRCUITPYTHON/code.py

diff --git a/CIRCUITPYTHON/Makefile b/CIRCUITPYTHON/Makefile
new file mode 100644
index 0000000..ed8cc4b
--- /dev/null
+++ b/CIRCUITPYTHON/Makefile
@@ -0,0 +1,2 @@
+install:
+	cp code.py /run/media/ccowley/CIRCUITPY/code.py
diff --git a/CIRCUITPYTHON/code.py b/CIRCUITPYTHON/code.py
new file mode 100644
index 0000000..4c2d02b
--- /dev/null
+++ b/CIRCUITPYTHON/code.py
@@ -0,0 +1,56 @@
+import time
+import board
+from digitalio import DigitalInOut, Direction, Pull
+import usb_midi
+import adafruit_midi
+from adafruit_midi.control_change   import ControlChange
+
+#  MIDI setup as MIDI out device
+midi = adafruit_midi.MIDI(midi_out=usb_midi.ports[1], out_channel=0)
+
+
+#  button pins, all pins in order skipping GP15
+button_pins = [
+    board.GP18,
+    board.GP19,
+    board.GP20,
+    board.GP21,
+    board.GP22,
+    ]
+
+buttons = []
+for pin in button_pins:
+    button = DigitalInOut(pin)
+    button.direction = Direction.INPUT
+    button.pull = Pull.UP
+    buttons.append(button)
+
+cc_numbers = [
+        20,
+        21,
+        22,
+        23,
+        24,
+        ]
+
+
+
+#  button states
+button_states = [True] * len(buttons)
+
+
+while True:
+    for i, button in enumerate(buttons):
+        current_state = button.value
+        if current_state != button_states[i]:
+            if not current_state:
+                # Button pressed
+                midi.send(ControlChange(cc_numbers[i], 127))
+                print(f"Button {i+1} pressed -> CC{cc_numbers[i]}:127")
+            else:
+                # Button released
+                midi.send(ControlChange(cc_numbers[i], 0))
+                print(f"Button {i+1} released -> CC{cc_numbers[i]}:0")
+            button_states[i] = current_state
+
+    time.sleep(0.01)