Pico Plus 2: Add a PPP variant.

.github/workflows/micropython.yml

@@ -30,6 +30,9 @@ jobs:
         - name: pico_plus2_rp2350_psram
           board: PIMORONI_PICO_PLUS2
           variant: PSRAM
+        - name: pico_plus2_rp2350_psram_n_ppp
+          board: PIMORONI_PICO_PLUS2
+          variant: PPP
         - name: pico_plus2_rp2350
           board: PIMORONI_PICO_PLUS2
 

micropython/board/PIMORONI_PICO_PLUS2/manifest-ppp.py

@@ -0,0 +1,3 @@
+require("bundle-networking")
+
+include("manifest.py")

micropython/board/PIMORONI_PICO_PLUS2/mpconfigboard.h

@@ -6,3 +6,20 @@
 #define MICROPY_HW_FLASH_STORAGE_BYTES          (PICO_FLASH_SIZE_BYTES - (2 * 1024 * 1024))
 
 #define MICROPY_HW_PSRAM_CS_PIN                 PIMORONI_PICO_PLUS2_PSRAM_CS_PIN
+
+#ifdef PPP_ENABLE_PPP
+
+// Enable networking.
+#define MICROPY_PY_NETWORK                      1
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT     "Pico"
+
+#define MICROPY_PY_NETWORK_PPP_LWIP             1
+
+#define MICROPY_HW_NIC_PPP                      { MP_ROM_QSTR(MP_QSTR_PINT), MP_ROM_PTR(&mp_network_ppp_lwip_type) },
+
+#define MICROPY_BOARD_NETWORK_INTERFACES \
+    MICROPY_HW_NIC_PPP
+
+#define MICROPY_PY_SOCKET_EXTENDED_STATE        1
+
+#endif

micropython/board/PIMORONI_PICO_PLUS2/mpconfigvariant_PPP.cmake

@@ -0,0 +1,11 @@
+# Override the MicroPython board name
+list(APPEND MICROPY_DEF_BOARD
+    "MICROPY_HW_ENABLE_PSRAM=1"
+    "MICROPY_GC_SPLIT_HEAP=1"
+    "MICROPY_HW_BOARD_NAME=\"Pimoroni Pico Plus 2 (PSRAM)\""
+    "PPP_ENABLE_PPP=1"
+)
+
+set(MICROPY_PY_LWIP ON)
+
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest-ppp.py)