RP_PICO_USB: New USB-enabled version of the stock Pico firmware.

⚠️ Warning: flash/firmware split is now 1Mb/1Mb to accomodate USB libs.

BACK UP YOUR PICO before flashing this build. It *will* trash your filesystem.

* Add new RP_PICO_USB board
* Use commit 932f76c6ba64c5a3e68de3324556d9979f09303b for 932f76c6ba

.github/workflows/micropython.yml

@@ -7,7 +7,7 @@ on:
     types: [created]
 
 env:
-  MICROPYTHON_VERSION: master
+  MICROPYTHON_VERSION: 932f76c6ba64c5a3e68de3324556d9979f09303b
 
 jobs:
   build:
@@ -19,6 +19,8 @@ jobs:
         include:
         - name: pico
           board: RPI_PICO
+        - name: pico_usb
+          board: RPI_PICO_USB
         - name: picow
           board: RPI_PICO_W
         - name: tiny2040_8mb

ci/micropython.sh

@@ -14,8 +14,9 @@ function log_warning {
 
 function micropython_clone {
     log_inform "Using MicroPython $MICROPYTHON_VERSION"
-    git clone https://github.com/micropython/micropython --depth=1 --branch=$MICROPYTHON_VERSION
+    git clone https://github.com/micropython/micropython
     cd micropython
+    git checkout $MICROPYTHON_VERSION
     git submodule update --init lib/pico-sdk
     git submodule update --init lib/cyw43-driver
     git submodule update --init lib/lwip

micropython/board/RPI_PICO_USB/board.json

@@ -0,0 +1,20 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "docs": "",
+    "features": [
+        "Breadboard friendly",
+        "Castellated Pads",
+        "Micro USB"
+    ],
+    "id": "rp2-pico",
+    "images": [
+        "rp2-pico.jpg"
+    ],
+    "mcu": "rp2040",
+    "product": "Pico",
+    "thumbnail": "",
+    "url": "https://www.raspberrypi.com/products/raspberry-pi-pico/",
+    "vendor": "Raspberry Pi"
+}

micropython/board/RPI_PICO_USB/manifest.py

@@ -0,0 +1,10 @@
+include("$(PORT_DIR)/boards/manifest.py")
+
+include("../manifest_pico.py")
+
+require("usb-device")
+require("usb-device-hid")
+require("usb-device-cdc")
+require("usb-device-keyboard")
+require("usb-device-mouse")
+require("usb-device-midi")

micropython/board/RPI_PICO_USB/mpconfigboard.cmake

@@ -0,0 +1,7 @@
+# cmake file for Raspberry Pi Pico
+set(PICO_BOARD "pico")
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+set(MICROPY_C_HEAP_SIZE 4096)

micropython/board/RPI_PICO_USB/mpconfigboard.h

@@ -0,0 +1,4 @@
+// Board and hardware specific configuration
+#define MICROPY_HW_BOARD_NAME                   "Raspberry Pi Pico"
+#define MICROPY_HW_FLASH_STORAGE_BYTES          (1024 * 1024)
+#define MICROPY_HW_ENABLE_USB_RUNTIME_DEVICE    1

micropython/board/RPI_PICO_USB/pins.csv

@@ -0,0 +1,28 @@
+GP0,GPIO0
+GP1,GPIO1
+GP2,GPIO2
+GP3,GPIO3
+GP4,GPIO4
+GP5,GPIO5
+GP6,GPIO6
+GP7,GPIO7
+GP8,GPIO8
+GP9,GPIO9
+GP10,GPIO10
+GP11,GPIO11
+GP12,GPIO12
+GP13,GPIO13
+GP14,GPIO14
+GP15,GPIO15
+GP16,GPIO16
+GP17,GPIO17
+GP18,GPIO18
+GP19,GPIO19
+GP20,GPIO20
+GP21,GPIO21
+GP22,GPIO22
+GP25,GPIO25
+GP26,GPIO26
+GP27,GPIO27
+GP28,GPIO28
+LED,GPIO25

micropython/board/manifest_pico.py

@@ -2,4 +2,4 @@ freeze("../modules_py", "gfx_pack.py")
 freeze("../modules_py", "interstate75.py")
 
 freeze("../modules_py", "pimoroni.py")
-freeze("../modules_py", "boot.py")
+freeze("../modules_py", "boot.py")

micropython/modules/micropython-pico_usb.cmake

@@ -0,0 +1,14 @@
+include_directories(${CMAKE_CURRENT_LIST_DIR}/../../)
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../../")
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+include(micropython-common)
+include(pico_wireless/micropython)
+
+# C++ Magic Memory
+include(cppmem/micropython)