Add 0x03_button_cbm: bare-metal RP2350 button driver

- GPIO15 active-low button input with internal pull-up - 20ms software debounce via busy-wait confirmation - LED mirrors button state, UART reports edge transitions - New gpio_config_input_pullup() in GPIO driver - 1555B FLASH, 13 source files, zero warnings
2026-07-21 03:10:52 +02:00 · 2026-04-05 16:06:46 -04:00
parent d072ec5946
commit afdc1fa594
33 changed files with 2313 additions and 0 deletions
@@ -0,0 +1,9 @@
+{
+    "recommendations": [
+        "marus25.cortex-debug",
+        "ms-vscode.cpptools",
+        "ms-vscode.cpptools-extension-pack",
+        "ms-vscode.vscode-serial-monitor",
+        "raspberry-pi.raspberry-pi-pico"
+    ]
+}