Switch to branch for dual hub 75's

Should include changes to PSRAM, including a 4K flash saving on non-PSRAM builds.

.github/workflows/micropython.yml

@@ -6,46 +6,35 @@ on:
   release:
     types: [created]
 
-env:
-  MICROPYTHON_VERSION: feature/pico2_w_2025
-  MICROPYTHON_FLAVOUR: pimoroni
-  PIMORONI_PICO_VERSION: main
-
 jobs:
   build:
-    name: ${{ matrix.name }} (${{ matrix.board }})
-    runs-on: ubuntu-20.04
+    name: MicroPython ${{ matrix.name }}
+    runs-on: ubuntu-24.04
     continue-on-error: true
     strategy:
       matrix:
         include:
-        - name: pico2
-          board: RPI_PICO2
-        - name: pico2_w
-          board: RPI_PICO2_W
-        - name: pico2b_rp2350
-          board: RPI_PICO2B
-        - name: plasma2350
-          board: PIMORONI_PLASMA2350
-        - name: tiny2350
-          board: PIMORONI_TINY2350
-        - name: pico_plus2_rp2350
-          board: PIMORONI_PICO_PLUS2
+        - name: rpi_pico2
+        - name: rpi_pico2_w
+        - name: rpi_pico2b
+        - name: pimoroni_plasma2350
+        - name: pimoroni_tiny2350
+        - name: pimoroni_pico_plus2
+        - name: pimoroni_interstate75_duo
 
     env:
       # MicroPython version will be contained in github.event.release.tag_name for releases
-      RELEASE_FILE: ${{ matrix.name }}-${{ github.event.release.tag_name || github.sha }}-pimoroni-micropython
-      PIMORONI_PICO_DIR: "${{ github.workspace }}/pimoroni-pico"
-      MICROPY_BOARD_DIR: "${{ github.workspace }}/pimoroni-pico-rp2350-${{ github.sha }}/micropython/board/${{ matrix.BOARD }}"
-      USER_C_MODULES: "${{ github.workspace }}/pimoroni-pico-rp2350-${{ github.sha }}/micropython/micropython-pico2.cmake"
-      TAG_OR_SHA: ${{ github.event.release.tag_name || github.sha }}
-      MICROPY_BOARD: ${{ matrix.board }}
-      MICROPY_BOARD_VARIANT: ${{ matrix.variant }}
-      BOARD_NAME: ${{ matrix.name }}
-      BUILD_TOOLS: pimoroni-pico-rp2350-${{ github.sha }}/ci/micropython.sh
+      CI_RELEASE_FILENAME: ${{ matrix.name }}-${{ github.event.release.tag_name || github.sha }}-micropython
+      CI_PROJECT_ROOT: ${{ github.workspace }}/src-${{ github.sha }}
+      CI_BUILD_ROOT: ${{ github.workspace }}
+      CI_USE_ENV: 1
 
     steps:
-    - name: Compiler Cache
+    - name: Compiler Cache Fixup
+      run: |
+        mkdir -p /home/runner/.ccache
+  
+    - name: "CCache: Restore saved cache"
       uses: actions/cache@v4
       with:
         path: /home/runner/.ccache
@@ -54,76 +43,61 @@ jobs:
           ccache-micropython-${{ matrix.name }}-${{ github.ref }}
           ccache-micropython-${{ matrix.name }}-
 
-    - uses: actions/checkout@v4
+    - name: "Checkout Project"
+      uses: actions/checkout@v4
       with:
         submodules: true
-        path: pimoroni-pico-rp2350-${{ github.sha }}
+        path: ${{ env.CI_PROJECT_ROOT }}
 
-    - uses: actions/checkout@v4
-      with:
-        repository: pimoroni/pimoroni-pico
-        ref: ${{env.PIMORONI_PICO_VERSION}}
-        submodules: true
-        path: pimoroni-pico
-
-    - name: Install Arm GNU Toolchain (arm-none-eabi-gcc)
+    - name: "Install Arm GNU Toolchain (arm-none-eabi-gcc)"
       uses: carlosperate/arm-none-eabi-gcc-action@v1
       with:
         release: '13.3.Rel1'
 
-    - name: Install CCache
-      run: |
-        source $BUILD_TOOLS
-        apt_install_build_deps
-      
-    - name: Checkout MicroPython & Submodules
-      run: |
-        source $BUILD_TOOLS
-        micropython_clone
-
-    - name: "Py_Decl: Checkout py_decl"
-      uses: actions/checkout@v4
-      with:
-        repository: gadgetoid/py_decl
-        ref: v0.0.2
-        path: py_decl
-
-    - name: Build MPY Cross
-      run: |
-        source $BUILD_TOOLS
-        micropython_build_mpy_cross
-
-    - name: Configure MicroPython
+    - name: "Prepare tools & dependencies"
       shell: bash
       run: |
-        source $BUILD_TOOLS
+        source $CI_PROJECT_ROOT/ci/micropython.sh && ci_debug
+        mkdir -p $CI_BUILD_ROOT
+        ci_apt_install_build_deps
+        ci_prepare_all
+
+    - name: "MicroPython: Configure"
+      shell: bash
+      run: |
+        source $CI_PROJECT_ROOT/ci/micropython.sh && ci_debug
         micropython_version
-        cmake_configure
+        ci_cmake_configure ${{ matrix.name }}
 
-    - name: Build MicroPython
+    - name: "MicroPython: Build"
       shell: bash
       run: |
-        source $BUILD_TOOLS
-        cmake_build
+        source $CI_PROJECT_ROOT/ci/micropython.sh && ci_debug
+        python3 -m venv "$CI_BUILD_ROOT/.dir2uf2"
+        source "$CI_BUILD_ROOT/.dir2uf2/bin/activate"
+        ci_cmake_build ${{ matrix.name }}
 
-    - name: "Py_Decl: Verify UF2"
-      shell: bash
-      run: |
-        python3 py_decl/py_decl.py --to-json --verify build-${{ matrix.name }}/${{ env.RELEASE_FILE }}.uf2
-
-    - name: Store .uf2 as artifact
+    - name: "Artifacts: Upload .uf2"
       uses: actions/upload-artifact@v4
       with:
-        name: ${{ env.RELEASE_FILE }}.uf2
-        path: build-${{ matrix.name }}/${{ env.RELEASE_FILE }}.uf2
+        name: ${{ env.CI_RELEASE_FILENAME }}.uf2
+        path: ${{ env.CI_BUILD_ROOT }}/${{ env.CI_RELEASE_FILENAME }}.uf2
 
-    - name: Upload .uf2
+    - name: "Release: Upload .uf2"
       if: github.event_name == 'release'
-      uses: actions/upload-release-asset@v1
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      uses: softprops/action-gh-release@v2
       with:
-        asset_path: build-${{ matrix.name }}/firmware.uf2
-        upload_url: ${{ github.event.release.upload_url }}
-        asset_name: ${{ env.RELEASE_FILE }}.uf2
-        asset_content_type: application/octet-stream
+        files: ${{ env.CI_BUILD_ROOT }}/${{ env.CI_RELEASE_FILENAME }}.uf2
+
+    - name: "Artifacts: Upload .uf2 (With Filesystem)"
+      uses: actions/upload-artifact@v4
+      with:
+        if-no-files-found: ignore
+        name: ${{ env.CI_RELEASE_FILENAME }}-with-filesystem.uf2
+        path: ${{ env.CI_BUILD_ROOT }}/${{ env.CI_RELEASE_FILENAME }}-with-filesystem.uf2
+
+    - name: "Release: Upload .uf2 (With Filesystem)"
+      if: github.event_name == 'release'
+      uses: softprops/action-gh-release@v2
+      with:
+        files: ${{ env.CI_BUILD_ROOT }}/${{ env.CI_RELEASE_FILENAME }}-with-filesystem.uf2

.gitignore

@@ -0,0 +1,39 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+**/build
+.vscode
+
+# Apple filesystem cruft
+.DS_Store
+venv

boards/common.cmake

@@ -0,0 +1,41 @@
+# Make sure we get our VirtualEnv Python
+set(Python_FIND_VIRTUALENV "FIRST")
+set(Python_FIND_UNVERSIONED_NAMES "FIRST")
+set(Python_FIND_STRATEGY "LOCATION")
+find_package (Python COMPONENTS Interpreter Development)
+
+message("dir2uf2/py_decl: Using Python ${Python_EXECUTABLE}")
+MESSAGE("dir2uf2/py_decl: Using pimoroni tools dir ${PIMORONI_TOOLS_DIR}")
+
+if (EXISTS "${PIMORONI_TOOLS_DIR}/py_decl/py_decl.py")
+    MESSAGE("py_decl: py_decl.py found, will verify uf2.")
+    add_custom_target("${MICROPY_TARGET}-verify" ALL
+        COMMAND ${Python_EXECUTABLE} "${PIMORONI_TOOLS_DIR}/py_decl/py_decl.py" --to-json --verify "${CMAKE_CURRENT_BINARY_DIR}/${MICROPY_TARGET}.uf2"
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+        COMMENT "pydecl: Verifying ${MICROPY_TARGET}.uf2"
+        DEPENDS ${MICROPY_TARGET}
+    )
+endif()
+
+if(DEFINED PIMORONI_UF2_MANIFEST AND DEFINED PIMORONI_UF2_DIR)
+
+# Convert supplies paths to absolute, for a quieter life
+get_filename_component(PIMORONI_UF2_MANIFEST ${PIMORONI_UF2_MANIFEST} REALPATH)
+get_filename_component(PIMORONI_UF2_DIR ${PIMORONI_UF2_DIR} REALPATH)
+
+if (EXISTS "${PIMORONI_TOOLS_DIR}/dir2uf2/dir2uf2" AND EXISTS "${PIMORONI_UF2_MANIFEST}" AND EXISTS "${PIMORONI_UF2_DIR}")
+    MESSAGE("dir2uf2: Using manifest ${PIMORONI_UF2_MANIFEST}.")
+    MESSAGE("dir2uf2: Using root ${PIMORONI_UF2_DIR}.")
+    add_custom_target("${MICROPY_TARGET}-with-filesystem.uf2" ALL
+        COMMAND ${Python_EXECUTABLE} "${PIMORONI_TOOLS_DIR}/dir2uf2/dir2uf2" --fs-compact --sparse --append-to "${MICROPY_TARGET}.uf2" --manifest "${PIMORONI_UF2_MANIFEST}" --filename with-filesystem.uf2 "${PIMORONI_UF2_DIR}"
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+        COMMENT "dir2uf2: Appending filesystem to ${MICROPY_TARGET}.uf2."
+        DEPENDS ${MICROPY_TARGET}
+        DEPENDS "${MICROPY_TARGET}-verify"
+    )
+else()
+    MESSAGE("dir2uf2: Could not find manifest ${PIMORONI_UF2_MANIFEST}")
+    MESSAGE("         and/or root ${PIMORONI_UF2_DIR}.")
+endif()
+
+endif()

boards/manifest_pico2.py

@@ -0,0 +1,12 @@
+# micropython/ports/rp2/../../../
+MODULES_PY = "{PORT_DIR}/../../../pimoroni-pico/micropython/modules_py"
+
+# SD Card
+require("sdcard")
+
+freeze(MODULES_PY, "gfx_pack.py")
+
+freeze(MODULES_PY, "pimoroni.py")
+freeze(MODULES_PY, "boot.py")
+
+freeze(MODULES_PY, "lte.py")

boards/pimoroni_interstate75_duo/board.json

@@ -0,0 +1,19 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "docs": "",
+    "features": [
+        "Dual-core",
+        "External Flash",
+        "USB"
+    ],
+    "images": [
+        "rp2-picos.jpg"
+    ],
+    "mcu": "rp2350",
+    "product": "Pico2",
+    "thumbnail": "",
+    "url": "https://www.raspberrypi.com/products/raspberry-pi-pico2/",
+    "vendor": "Raspberry Pi"
+}

boards/pimoroni_interstate75_duo/manifest.py

@@ -1,10 +1,8 @@
-require("bundle-networking")
-
-# Bluetooth
-require("aioble")
-
-include("$(PORT_DIR)/boards/manifest.py")
-
-include("../manifest_pico2.py")
-
-freeze("$(BOARD_DIR)/../../modules_py", "lte.py")
+require("bundle-networking")
+
+# Bluetooth
+require("aioble")
+
+include("$(PORT_DIR)/boards/manifest.py")
+
+include("../manifest_pico2.py")

boards/pimoroni_interstate75_duo/mpconfigboard.cmake

@@ -0,0 +1,39 @@
+# cmake file for Raspberry Pi Pico
+set(PICO_BOARD "pimoroni_interstate75_duo")
+set(PICO_BOARD_HEADER_DIRS ${CMAKE_CURRENT_LIST_DIR})
+set(PICO_PLATFORM "rp2350")
+set(PICO_NUM_GPIOS 48)
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+set(MICROPY_C_HEAP_SIZE 4096)
+
+# Links micropy_lib_lwip and sets MICROPY_PY_LWIP = 1
+# Picked up and expanded upon in mpconfigboard.h
+set(MICROPY_PY_LWIP ON)
+
+# Links cyw43-driver and sets:
+# MICROPY_PY_NETWORK_CYW43 = 1,
+# MICROPY_PY_SOCKET_DEFAULT_TIMEOUT_MS = 30000
+set(MICROPY_PY_NETWORK_CYW43 ON)
+
+# Adds mpbthciport.c
+# And sets:
+# MICROPY_PY_BLUETOOTH = 1,
+# MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS = 1,
+# MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE = 1
+set(MICROPY_PY_BLUETOOTH ON)
+
+# Links pico_btstack_hci_transport_cyw43
+# And sets:
+# MICROPY_BLUETOOTH_BTSTACK = 1,
+# MICROPY_BLUETOOTH_BTSTACK_CONFIG_FILE =
+set(MICROPY_BLUETOOTH_BTSTACK ON)
+
+# Sets:
+# CYW43_ENABLE_BLUETOOTH = 1,
+# MICROPY_PY_BLUETOOTH_CYW43 = 1
+set(MICROPY_PY_BLUETOOTH_CYW43 ON)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/pimoroni_interstate75_duo/mpconfigboard.h

@@ -0,0 +1,19 @@
+// Board and hardware specific configuration
+#define MICROPY_HW_FLASH_STORAGE_BYTES          (PICO_FLASH_SIZE_BYTES - (2 * 1024 * 1024))
+
+// Set up networking.
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT     "Interstate75Duo"
+
+#define MICROPY_HW_BOARD_NAME                   "Pimoroni Interstate 75 Duo"
+
+// Enable WiFi & PPP
+#define MICROPY_PY_NETWORK                      (1)
+
+// CYW43 driver configuration.
+#define CYW43_USE_SPI                           (1)
+#define CYW43_LWIP                              (1)
+#define CYW43_GPIO                              (0)
+#define CYW43_SPI_PIO                           (1)
+
+int mp_hal_is_pin_reserved(int n);
+#define MICROPY_HW_PIN_RESERVED(i) mp_hal_is_pin_reserved(i)

boards/pimoroni_interstate75_duo/pimoroni_interstate75_duo.h

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+// -----------------------------------------------------
+// NOTE: THIS HEADER IS ALSO INCLUDED BY ASSEMBLER SO
+//       SHOULD ONLY CONSIST OF PREPROCESSOR DIRECTIVES
+// -----------------------------------------------------
+
+// This header may be included by other board headers as "boards/pico.h"
+
+// pico_cmake_set PICO_PLATFORM=rp2350
+
+#ifndef _BOARDS_PICO2_H
+#define _BOARDS_PICO2_H
+
+// For board detection
+#define RASPBERRYPI_PICO2
+
+// --- RP2350 VARIANT ---
+// not PICO_RP2350A
+
+// --- UART ---
+#ifndef PICO_DEFAULT_UART
+#define PICO_DEFAULT_UART 0
+#endif
+#ifndef PICO_DEFAULT_UART_TX_PIN
+#define PICO_DEFAULT_UART_TX_PIN 0
+#endif
+#ifndef PICO_DEFAULT_UART_RX_PIN
+#define PICO_DEFAULT_UART_RX_PIN 1
+#endif
+
+// --- LED ---
+#ifndef PICO_DEFAULT_LED_PIN
+#define PICO_DEFAULT_LED_PIN 25
+#endif
+// no PICO_DEFAULT_WS2812_PIN
+
+// --- I2C ---
+#ifndef PICO_DEFAULT_I2C
+#define PICO_DEFAULT_I2C 0
+#endif
+#ifndef PICO_DEFAULT_I2C_SDA_PIN
+#define PICO_DEFAULT_I2C_SDA_PIN 4
+#endif
+#ifndef PICO_DEFAULT_I2C_SCL_PIN
+#define PICO_DEFAULT_I2C_SCL_PIN 5
+#endif
+
+// --- SPI ---
+#ifndef PICO_DEFAULT_SPI
+#define PICO_DEFAULT_SPI 0
+#endif
+#ifndef PICO_DEFAULT_SPI_SCK_PIN
+#define PICO_DEFAULT_SPI_SCK_PIN 18
+#endif
+#ifndef PICO_DEFAULT_SPI_TX_PIN
+#define PICO_DEFAULT_SPI_TX_PIN 19
+#endif
+#ifndef PICO_DEFAULT_SPI_RX_PIN
+#define PICO_DEFAULT_SPI_RX_PIN 16
+#endif
+#ifndef PICO_DEFAULT_SPI_CSN_PIN
+#define PICO_DEFAULT_SPI_CSN_PIN 17
+#endif
+
+// --- FLASH ---
+
+#define PICO_BOOT_STAGE2_CHOOSE_W25Q080 1
+
+#ifndef PICO_FLASH_SPI_CLKDIV
+#define PICO_FLASH_SPI_CLKDIV 2
+#endif
+
+// pico_cmake_set_default PICO_FLASH_SIZE_BYTES = (4 * 1024 * 1024)
+#ifndef PICO_FLASH_SIZE_BYTES
+#define PICO_FLASH_SIZE_BYTES (4 * 1024 * 1024)
+#endif
+// Drive high to force power supply into PWM mode (lower ripple on 3V3 at light loads)
+#define PICO_SMPS_MODE_PIN 23
+
+// The GPIO Pin used to read VBUS to determine if the device is battery powered.
+#ifndef PICO_VBUS_PIN
+#define PICO_VBUS_PIN 24
+#endif
+
+// The GPIO Pin used to monitor VSYS. Typically you would use this with ADC.
+// There is an example in adc/read_vsys in pico-examples.
+#ifndef PICO_VSYS_PIN
+#define PICO_VSYS_PIN 29
+#endif
+
+#ifndef PICO_RP2350_A2_SUPPORTED
+#define PICO_RP2350_A2_SUPPORTED 1
+#endif
+
+// PICO_CONFIG: CYW43_PIN_WL_DYNAMIC, flag to indicate if cyw43 SPI pins can be changed at runtime, type=bool, default=false, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_PIN_WL_DYNAMIC
+#define CYW43_PIN_WL_DYNAMIC 1
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_REG_ON, gpio pin to power up the cyw43 chip, type=int, default=23, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_REG_ON
+#define CYW43_DEFAULT_PIN_WL_REG_ON 23u
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_DATA_OUT, gpio pin for spi data out to the cyw43 chip, type=int, default=24, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_DATA_OUT
+#define CYW43_DEFAULT_PIN_WL_DATA_OUT 24u
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_DATA_IN, gpio pin for spi data in from the cyw43 chip, type=int, default=24, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_DATA_IN
+#define CYW43_DEFAULT_PIN_WL_DATA_IN 24u
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_HOST_WAKE, gpio (irq) pin for the irq line from the cyw43 chip, type=int, default=24, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_HOST_WAKE
+#define CYW43_DEFAULT_PIN_WL_HOST_WAKE 24u
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_CLOCK, gpio pin for the spi clock line to the cyw43 chip, type=int, default=29, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_CLOCK
+#define CYW43_DEFAULT_PIN_WL_CLOCK 29u
+#endif
+
+// PICO_CONFIG: CYW43_DEFAULT_PIN_WL_CS, gpio pin for the spi chip select to the cyw43 chip, type=int, default=25, advanced=true, group=pico_cyw43_driver
+#ifndef CYW43_DEFAULT_PIN_WL_CS
+#define CYW43_DEFAULT_PIN_WL_CS 25u
+#endif
+
+#endif

boards/pimoroni_interstate75_duo/pins.csv

@@ -0,0 +1,47 @@
+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
+GP29,GPIO29
+GP30,GPIO30
+GP31,GPIO31
+GP32,GPIO32
+GP33,GPIO33
+GP34,GPIO34
+GP35,GPIO35
+GP36,GPIO36
+GP37,GPIO37
+GP38,GPIO38
+GP39,GPIO39
+GP40,GPIO40
+GP41,GPIO41
+GP42,GPIO42
+GP43,GPIO43
+GP44,GPIO44
+GP45,GPIO45
+GP46,GPIO46
+GP47,GPIO47
+LED,GPIO25

boards/pimoroni_interstate75_duo/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/pimoroni_pico_plus2/manifest.py

@@ -5,6 +5,4 @@ require("aioble")
 
 include("$(PORT_DIR)/boards/manifest.py")
 
-include("../manifest_pico2.py")
-
-freeze("$(BOARD_DIR)/../../modules_py", "lte.py")
+include("../manifest_pico2.py")

boards/pimoroni_pico_plus2/mpconfigboard.cmake

@@ -36,4 +36,8 @@ set(MICROPY_BLUETOOTH_BTSTACK ON)
 # MICROPY_PY_BLUETOOTH_CYW43 = 1
 set(MICROPY_PY_BLUETOOTH_CYW43 ON)
 
+# Sets:
+# MICROPY_HW_ENABLE_PSRAM=1
+set(MICROPY_HW_ENABLE_PSRAM ON)
 
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/pimoroni_pico_plus2/mpconfigboard.h

@@ -26,6 +26,5 @@ int mp_hal_is_pin_reserved(int n);
 #define MICROPY_HW_PIN_RESERVED(i) mp_hal_is_pin_reserved(i)
 
 // PSRAM Settings
-#define MICROPY_HW_ENABLE_PSRAM                 (1)
 #define MICROPY_HW_PSRAM_CS_PIN                 PIMORONI_PICO_PLUS2_PSRAM_CS_PIN
 #define MICROPY_GC_SPLIT_HEAP                   (1)

boards/pimoroni_pico_plus2/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/pimoroni_plasma2350/manifest.py

@@ -0,0 +1,8 @@
+require("bundle-networking")
+
+# Bluetooth
+require("aioble")
+
+include("$(PORT_DIR)/boards/manifest.py")
+
+include("../manifest_pico2.py")

boards/pimoroni_plasma2350/mpconfigboard.cmake

@@ -35,3 +35,4 @@ set(MICROPY_BLUETOOTH_BTSTACK ON)
 # MICROPY_PY_BLUETOOTH_CYW43 = 1
 set(MICROPY_PY_BLUETOOTH_CYW43 ON)
 
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/pimoroni_plasma2350/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/pimoroni_tiny2350/mpconfigboard.cmake

@@ -6,3 +6,5 @@ set(PICO_PLATFORM "rp2350")
 set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
 
 set(MICROPY_C_HEAP_SIZE 4096)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/pimoroni_tiny2350/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/rpi_pico2/mpconfigboard.cmake

@@ -0,0 +1,18 @@
+# cmake file for Raspberry Pi Pico2
+set(PICO_BOARD "pico2")
+
+# To change the gpio count for QFN-80
+# set(PICO_NUM_GPIOS 48)
+
+# Links micropy_lib_lwip and sets MICROPY_PY_LWIP = 1
+# Picked up and expanded upon in mpconfigboard.h
+set(MICROPY_PY_LWIP ON)
+
+if (PICO_CYW43_SUPPORTED)
+    include(enable_cyw43.cmake)
+    set(PICO_PINS_CSV_NAME pins_cyw43.csv)
+endif()
+
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/rpi_pico2/mpconfigboard.h

@@ -2,6 +2,12 @@
 #define MICROPY_HW_BOARD_NAME                   "Raspberry Pi Pico2"
 #define MICROPY_HW_FLASH_STORAGE_BYTES          (PICO_FLASH_SIZE_BYTES - 1024 * 1024 * 2)
 
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT     "Pico2"
+
+// Enable WiFi & PPP
+#define MICROPY_PY_NETWORK                      (1)
+#define MICROPY_PY_NETWORK_PPP_LWIP             (1)
+
 #if MICROPY_PY_NETWORK_CYW43
 #include "enable_cyw43.h"
 

boards/rpi_pico2/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/rpi_pico2_w/mpconfigboard.cmake

@@ -0,0 +1,16 @@
+# cmake file for Raspberry Pi Pico 2 W
+set(PICO_BOARD "pico2_w")
+
+# To change the gpio count for QFN-80
+# set(PICO_NUM_GPIOS 48)
+
+# Links micropy_lib_lwip and sets MICROPY_PY_LWIP = 1
+# Picked up and expanded upon in mpconfigboard.h
+set(MICROPY_PY_LWIP ON)
+
+include(enable_cyw43.cmake)
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/rpi_pico2_w/mpconfigboard.h

@@ -2,6 +2,9 @@
 #define MICROPY_HW_BOARD_NAME                   "Raspberry Pi Pico 2 W"
 #define MICROPY_HW_FLASH_STORAGE_BYTES          (PICO_FLASH_SIZE_BYTES - 1024 * 1024 * 2)
 
-#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "Pico2W"
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT     "Pico2W"
+
+// Enable PPP
+#define MICROPY_PY_NETWORK_PPP_LWIP             (1)
 
 #include "enable_cyw43.h"

boards/rpi_pico2_w/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

boards/rpi_pico2b/mpconfigboard.cmake

@@ -10,3 +10,5 @@ set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
 set(MICROPY_C_HEAP_SIZE 4096)
 
 set(PICO_NUM_GPIOS 48)
+
+include(${CMAKE_CURRENT_LIST_DIR}/../common.cmake)

boards/rpi_pico2b/usermodules.cmake

@@ -0,0 +1,3 @@
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../")
+
+include(usermod-common)

ci/micropython.sh

@@ -1,5 +1,15 @@
 export TERM=${TERM:="xterm-256color"}
 
+MICROPYTHON_FLAVOUR="pimoroni"
+MICROPYTHON_VERSION="feature/pico2_w_2025_3_11"
+
+PIMORONI_PICO_FLAVOUR="pimoroni"
+PIMORONI_PICO_VERSION="feature/i75_duo"
+
+PY_DECL_VERSION="v0.0.3"
+DIR2UF2_VERSION="v0.0.9"
+
+
 function log_success {
 	echo -e "$(tput setaf 2)$1$(tput sgr0)"
 }
@@ -12,10 +22,19 @@ function log_warning {
 	echo -e "$(tput setaf 1)$1$(tput sgr0)"
 }
 
-function micropython_clone {
-    log_inform "Using MicroPython $MICROPYTHON_VERSION"
-    git clone https://github.com/$MICROPYTHON_FLAVOUR/micropython
-    cd micropython
+function ci_pimoroni_pico_clone {
+    log_inform "Using Pimoroni Pico $PIMORONI_PICO_FLAVOUR/$PIMORONI_PICO_VERSION"
+    git clone https://github.com/$PIMORONI_PICO_FLAVOUR/pimoroni-pico "$CI_BUILD_ROOT/pimoroni-pico"
+    cd "$CI_BUILD_ROOT/pimoroni-pico" || return 1
+    git checkout $PIMORONI_PICO_VERSION
+    git submodule update --init
+    cd "$CI_BUILD_ROOT"
+}
+
+function ci_micropython_clone {
+    log_inform "Using MicroPython $MICROPYTHON_FLAVOUR/$MICROPYTHON_VERSION"
+    git clone https://github.com/$MICROPYTHON_FLAVOUR/micropython "$CI_BUILD_ROOT/micropython"
+    cd "$CI_BUILD_ROOT/micropython" || return 1
     git checkout $MICROPYTHON_VERSION
     git submodule update --init lib/pico-sdk
     git submodule update --init lib/cyw43-driver
@@ -24,42 +43,98 @@ function micropython_clone {
     git submodule update --init lib/micropython-lib
     git submodule update --init lib/tinyusb
     git submodule update --init lib/btstack
-    cd ../
+    cd "$CI_BUILD_ROOT"
 }
 
-function micropython_build_mpy_cross {
-    cd micropython/mpy-cross
+function ci_tools_clone {
+    mkdir -p "$CI_BUILD_ROOT/tools"
+    git clone https://github.com/gadgetoid/py_decl -b "$PY_DECL_VERSION" "$CI_BUILD_ROOT/tools/py_decl"
+    git clone https://github.com/gadgetoid/dir2uf2 -b "$DIR2UF2_VERSION" "$CI_BUILD_ROOT/tools/dir2uf2"
+    python3 -m pip install littlefs-python==0.12.0
+}
+
+function ci_micropython_build_mpy_cross {
+    cd "$CI_BUILD_ROOT/micropython/mpy-cross" || return 1
     ccache --zero-stats || true
-    CROSS_COMPILE="ccache " USER_C_MODULES= make
+    CROSS_COMPILE="ccache " make
     ccache --show-stats || true
-    cd ../../
+    cd "$CI_BUILD_ROOT"
 }
 
-function apt_install_build_deps {
+function ci_apt_install_build_deps {
     sudo apt update && sudo apt install ccache
 }
 
+function ci_prepare_all {
+    ci_tools_clone
+    ci_micropython_clone
+    ci_pimoroni_pico_clone
+    ci_micropython_build_mpy_cross
+}
+
+function ci_debug {
+    log_inform "Project root: $CI_PROJECT_ROOT"
+    log_inform "Build root: $CI_BUILD_ROOT"
+}
+
 function micropython_version {
-    echo "MICROPY_GIT_TAG=$MICROPYTHON_VERSION, $BOARD_NAME $TAG_OR_SHA" >> $GITHUB_ENV
+    BOARD=$1
+    echo "MICROPY_GIT_TAG=$MICROPYTHON_VERSION, $BOARD $TAG_OR_SHA" >> $GITHUB_ENV
     echo "MICROPY_GIT_HASH=$MICROPYTHON_VERSION-$TAG_OR_SHA" >> $GITHUB_ENV
 }
 
-function cmake_configure {
-    cmake -S micropython/ports/rp2 -B build-$BOARD_NAME \
+function ci_cmake_configure {
+    BOARD=$1
+    TOOLS_DIR="$CI_BUILD_ROOT/tools"
+    MICROPY_BOARD_DIR=$CI_PROJECT_ROOT/boards/$BOARD
+    if [ ! -f "$MICROPY_BOARD_DIR/mpconfigboard.cmake" ]; then
+        log_warning "Invalid board: \"$BOARD\". Run with ci_cmake_configure <board_name>."
+        return 1
+    fi
+    BUILD_DIR="$CI_BUILD_ROOT/build-$BOARD"
+    cmake -S $CI_BUILD_ROOT/micropython/ports/rp2 -B "$BUILD_DIR" \
+    -DPICOTOOL_FORCE_FETCH_FROM_GIT=1 \
     -DPICO_BUILD_DOCS=0 \
     -DPICO_NO_COPRO_DIS=1 \
-    -DUSER_C_MODULES=$USER_C_MODULES \
-    -DMICROPY_BOARD_DIR=$MICROPY_BOARD_DIR \
-    -DMICROPY_BOARD=$MICROPY_BOARD \
-    -DMICROPY_BOARD_VARIANT=$MICROPY_BOARD_VARIANT \
+    -DPICOTOOL_FETCH_FROM_GIT_PATH="$TOOLS_DIR/picotool" \
+    -DPIMORONI_PICO_PATH="$CI_BUILD_ROOT/pimoroni-pico" \
+    -DPIMORONI_TOOLS_DIR="$TOOLS_DIR" \
+    -DUSER_C_MODULES="$MICROPY_BOARD_DIR/usermodules.cmake" \
+    -DMICROPY_BOARD_DIR="$MICROPY_BOARD_DIR" \
+    -DMICROPY_BOARD="$BOARD" \
     -DCMAKE_C_COMPILER_LAUNCHER=ccache \
     -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
 }
 
-function cmake_build {
+function ci_cmake_build {
+    BOARD=$1
+    MICROPY_BOARD_DIR=$CI_PROJECT_ROOT/boards/$BOARD
+    if [ ! -f "$MICROPY_BOARD_DIR/mpconfigboard.cmake" ]; then
+        log_warning "Invalid board: \"$BOARD\". Run with ci_cmake_build <board_name>."
+        return 1
+    fi
+    BUILD_DIR="$CI_BUILD_ROOT/build-$BOARD"
     ccache --zero-stats || true
-    cmake --build build-$BOARD_NAME -j 2
+    cmake --build $BUILD_DIR -j 2
     ccache --show-stats || true
-    cd build-$BOARD_NAME
-    cp firmware.uf2 $RELEASE_FILE.uf2
+
+    if [ -z ${CI_RELEASE_FILENAME+x} ]; then
+        $CI_RELEASE_FILENAME=$BOARD
+    fi
+
+    log_inform "Copying .uf2 to $(pwd)/$CI_RELEASE_FILENAME.uf2"
+    cp "$BUILD_DIR/firmware.uf2" $CI_RELEASE_FILENAME.uf2
+
+    if [ -f "$BUILD_DIR/firmware-with-filesystem.uf2" ]; then
+        log_inform "Copying -with-filesystem .uf2 to $(pwd)/$CI_RELEASE_FILENAME-with-filesystem.uf2"
+        cp "$BUILD_DIR/firmware-with-filesystem.uf2" $CI_RELEASE_FILENAME-with-filesystem.uf2
+    fi
 }
+
+if [ -z ${CI_USE_ENV+x} ] || [ -z ${CI_PROJECT_ROOT+x} ] || [ -z ${CI_BUILD_ROOT+x} ]; then
+    SCRIPT_PATH="$(dirname $0)"
+    CI_PROJECT_ROOT=$(realpath "$SCRIPT_PATH/..")
+    CI_BUILD_ROOT=$(pwd)
+fi
+
+ci_debug

micropython/board/RPI_PICO2/mpconfigboard.cmake

@@ -1,12 +0,0 @@
-# cmake file for Raspberry Pi Pico2
-set(PICO_BOARD "pico2")
-
-# To change the gpio count for QFN-80
-# set(PICO_NUM_GPIOS 48)
-
-if (PICO_CYW43_SUPPORTED)
-    include(enable_cyw43.cmake)
-    set(PICO_PINS_CSV_NAME pins_cyw43.csv)
-endif()
-
-set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)

micropython/board/RPI_PICO2/pico2_w.h

@@ -1,116 +0,0 @@
-/*
- * Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-// -----------------------------------------------------
-// NOTE: THIS HEADER IS ALSO INCLUDED BY ASSEMBLER SO
-//       SHOULD ONLY CONSIST OF PREPROCESSOR DIRECTIVES
-// -----------------------------------------------------
-
-// This header may be included by other board headers as "boards/pico2_w.h"
-
-// pico_cmake_set PICO_PLATFORM=rp2350
-// pico_cmake_set PICO_CYW43_SUPPORTED = 1
-
-#ifndef _BOARDS_PICO2_W_H
-#define _BOARDS_PICO2_W_H
-
-// For board detection
-#define RASPBERRYPI_PICO2_W
-
-// --- RP2350 VARIANT ---
-#define PICO_RP2350A 1
-
-// --- UART ---
-#ifndef PICO_DEFAULT_UART
-#define PICO_DEFAULT_UART 0
-#endif
-#ifndef PICO_DEFAULT_UART_TX_PIN
-#define PICO_DEFAULT_UART_TX_PIN 0
-#endif
-#ifndef PICO_DEFAULT_UART_RX_PIN
-#define PICO_DEFAULT_UART_RX_PIN 1
-#endif
-
-// --- LED ---
-// no PICO_DEFAULT_LED_PIN - LED is on Wireless chip
-// no PICO_DEFAULT_WS2812_PIN
-
-// --- I2C ---
-#ifndef PICO_DEFAULT_I2C
-#define PICO_DEFAULT_I2C 0
-#endif
-#ifndef PICO_DEFAULT_I2C_SDA_PIN
-#define PICO_DEFAULT_I2C_SDA_PIN 4
-#endif
-#ifndef PICO_DEFAULT_I2C_SCL_PIN
-#define PICO_DEFAULT_I2C_SCL_PIN 5
-#endif
-
-// --- SPI ---
-#ifndef PICO_DEFAULT_SPI
-#define PICO_DEFAULT_SPI 0
-#endif
-#ifndef PICO_DEFAULT_SPI_SCK_PIN
-#define PICO_DEFAULT_SPI_SCK_PIN 18
-#endif
-#ifndef PICO_DEFAULT_SPI_TX_PIN
-#define PICO_DEFAULT_SPI_TX_PIN 19
-#endif
-#ifndef PICO_DEFAULT_SPI_RX_PIN
-#define PICO_DEFAULT_SPI_RX_PIN 16
-#endif
-#ifndef PICO_DEFAULT_SPI_CSN_PIN
-#define PICO_DEFAULT_SPI_CSN_PIN 17
-#endif
-
-// --- FLASH ---
-
-#define PICO_BOOT_STAGE2_CHOOSE_W25Q080 1
-
-#ifndef PICO_FLASH_SPI_CLKDIV
-#define PICO_FLASH_SPI_CLKDIV 2
-#endif
-
-// pico_cmake_set_default PICO_FLASH_SIZE_BYTES = (4 * 1024 * 1024)
-#ifndef PICO_FLASH_SIZE_BYTES
-#define PICO_FLASH_SIZE_BYTES (4 * 1024 * 1024)
-#endif
-// Drive high to force power supply into PWM mode (lower ripple on 3V3 at light loads)
-// note the SMSP mode pin is on WL_GPIO1
-
-#ifndef CYW43_WL_GPIO_COUNT
-#define CYW43_WL_GPIO_COUNT 3
-#endif
-
-#ifndef CYW43_WL_GPIO_LED_PIN
-#define CYW43_WL_GPIO_LED_PIN 0
-#endif
-
-// If CYW43_WL_GPIO_VBUS_PIN is defined then a CYW43 GPIO has to be used to read VBUS.
-// This can be passed to cyw43_arch_gpio_get to determine if the device is battery powered.
-// PICO_VBUS_PIN and CYW43_WL_GPIO_VBUS_PIN should not both be defined.
-#ifndef CYW43_WL_GPIO_VBUS_PIN
-#define CYW43_WL_GPIO_VBUS_PIN 2
-#endif
-
-// If CYW43_USES_VSYS_PIN is defined then CYW43 uses the VSYS GPIO (defined by PICO_VSYS_PIN) for other purposes.
-// If this is the case, to use the VSYS GPIO it's necessary to ensure CYW43 is not using it.
-// This can be achieved by wrapping the use of the VSYS GPIO in cyw43_thread_enter / cyw43_thread_exit.
-#ifndef CYW43_USES_VSYS_PIN
-#define CYW43_USES_VSYS_PIN 1
-#endif
-
-// The GPIO Pin used to monitor VSYS. Typically you would use this with ADC.
-// There is an example in adc/read_vsys in pico-examples.
-#ifndef PICO_VSYS_PIN
-#define PICO_VSYS_PIN 29
-#endif
-
-#ifndef PICO_RP2350_A2_SUPPORTED
-#define PICO_RP2350_A2_SUPPORTED 1
-#endif
-
-#endif

micropython/board/RPI_PICO2_W/mpconfigboard.cmake

@@ -1,11 +0,0 @@
-# cmake file for Raspberry Pi Pico 2 W
-
-set(PICO_BOARD "pico2_w")
-
-# To change the gpio count for QFN-80
-# set(PICO_NUM_GPIOS 48)
-
-include(enable_cyw43.cmake)
-
-# Board specific version of the frozen manifest
-set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)

micropython/board/manifest_pico2.py

@@ -1,9 +0,0 @@
-MODULES_PY = "../../../pimoroni-pico/micropython/modules_py"
-
-# SD Card
-require("sdcard")
-
-freeze(MODULES_PY, "gfx_pack.py")
-
-freeze(MODULES_PY, "pimoroni.py")
-freeze(MODULES_PY, "boot.py")

micropython/modules_py/lte.py

@@ -1,220 +0,0 @@
-from machine import UART, Pin
-from network import PPP
-from micropython import const
-import time
-
-
-DEFAULT_PIN_RST = 35
-DEFAULT_PIN_NETLIGHT = 34
-DEFAULT_PIN_RX = 33
-DEFAULT_PIN_TX = 32
-DEFAULT_UART_ID = 0
-
-DEFAULT_UART_TIMEOUT = const(1)
-DEFAULT_UART_TIMEOUT_CHAR = const(1)
-DEFAULT_UART_RXBUF = const(1024)
-DEFAULT_UART_STARTUP_BAUD = const(115200)
-DEFAULT_UART_BAUD = const(460800)
-
-
-class CellularError(Exception):
-    def __init__(self, message=None):
-        self.message = f"CellularError: {message}"
-
-
-class LTE():
-    def __init__(self, apn, uart=None, reset_pin=None, netlight_pin=None, netlight_led=None, skip_reset=False):
-        self._apn = apn
-        self._reset = reset_pin or Pin(DEFAULT_PIN_RST, Pin.OUT)
-        self._uart = uart or UART(
-            DEFAULT_UART_ID,
-            tx=Pin(DEFAULT_PIN_TX, Pin.OUT),
-            rx=Pin(DEFAULT_PIN_RX, Pin.OUT))
-
-        # Set PPP timeouts and rxbuf
-        self._uart.init(
-            timeout=DEFAULT_UART_TIMEOUT,
-            timeout_char=DEFAULT_UART_TIMEOUT_CHAR,
-            rxbuf=DEFAULT_UART_RXBUF)
-
-        if not skip_reset:
-            self._reset.value(0)
-            time.sleep(1.0)
-            self._reset.value(1)
-
-        if netlight_led:
-            self._led = netlight_led
-            self._netlight = netlight_pin or Pin(DEFAULT_PIN_NETLIGHT, Pin.IN)
-            self._netlight.irq(self._netlight_irq)
-
-    def _netlight_irq(self, pin):
-        self._led.value(pin.value())
-
-    def ipconfig(self, *args, **kwargs):
-        if len(args):
-            return self._ppp.ipconfig(*args)
-        else:
-            return self._ppp.ipconfig(**kwargs)
-
-    def iccid(self):
-        try:
-            return self._send_at_command("AT+CICCID", 1)
-        except CellularError:
-            return None
-
-    def status(self):
-        lte_status = self._send_at_command("AT+CEREG?", 1)
-        gsm_status = self._send_at_command("AT+CGREG?", 1)
-        return lte_status, gsm_status
-
-    def signal_quality(self):
-        try:
-            response = self._send_at_command("AT+CSQ", 1)
-            quality = int(response.split(":")[1].split(",")[0])
-            db = -113 + (2 * quality)  # conversion as per AT command set datasheet
-            return db
-        except CellularError:
-            pass
-        return None
-
-    def stop_ppp(self):
-        self._ppp.disconnect()
-        self._send_at_command(f"AT+IPR={DEFAULT_UART_STARTUP_BAUD}")
-        self._flush_uart()
-
-    def start_ppp(self, baudrate=DEFAULT_UART_BAUD, connect=True):
-        self._wait_ready(poll_time=1.0, timeout=30)
-
-        # Switch to a faster baudrate
-        self._send_at_command(f"AT+IPR={baudrate}")
-        self._flush_uart()
-        self._uart.init(
-            baudrate=baudrate,
-            timeout=DEFAULT_UART_TIMEOUT,
-            timeout_char=DEFAULT_UART_TIMEOUT_CHAR,
-            rxbuf=DEFAULT_UART_RXBUF)
-        self._wait_ready(poll_time=1.0)
-
-        # Connect!
-        if connect:
-            self.connect()
-
-        # This will just always time out!?
-        # try:
-        #    self._send_at_command("ATD*99#", timeout=300)
-        # except CellularError as e:
-        #    print(e)
-
-        # Force PPP to use modem's default settings...
-        self._flush_uart()
-        self._uart.write("ATD*99#\r")
-        self._uart.flush()
-
-        self._ppp = PPP(self._uart)
-        self._ppp.connect()
-        while self._ppp.status() != 4:
-            time.sleep(1.0)
-
-        return self._ppp.ifconfig()
-
-    def connect(self, timeout=60):
-        print("  - setting up cellular uart")
-        # connect to and flush the uart
-        # consume any unsolicited messages first, we don't need those
-        self._flush_uart()
-
-        print("  - waiting for cellular module to be ready")
-
-        # wait for the cellular module to respond to AT commands
-        self._wait_ready()
-
-        self._send_at_command("ATE0")  # disable local echo
-        self._send_at_command(f"AT+CGDCONT=1,\"IP\",\"{self._apn}\"")  # set apn and activate pdp context
-
-        # wait for roaming lte connection to be established
-        giveup = time.time() + timeout
-        status = None
-        while status != "+CEREG: 0,5" and status != "+CEREG: 0,1":
-            status = self._send_at_command("AT+CEREG?", 1)
-            time.sleep(0.25)
-            if time.time() > giveup:
-                raise CellularError("timed out getting network registration")
-
-        # disable server and client certification validation
-        self._send_at_command("AT+CSSLCFG=\"authmode\",0,0")
-        self._send_at_command("AT+CSSLCFG=\"enableSNI\",0,1")
-
-        print(f"  - SIM ICCID is {self.iccid()}")
-
-    def _wait_ready(self, poll_time=0.25, timeout=10):
-        giveup = time.time() + timeout
-        while time.time() <= giveup:
-            try:
-                # if __send_at_command doesn't throw an exception then we're good!
-                self._send_at_command("AT")
-                return
-            except CellularError as e:
-                print(e)
-                time.sleep(poll_time)
-
-        raise CellularError("timed out waiting for AT response")
-
-    def _flush_uart(self):
-        self._uart.flush()
-        time.sleep(0.25)
-        while self._uart.any():
-            self._uart.read(self._uart.any())
-            time.sleep(0.25)
-
-    def _send_at_command(self, command, result_lines=0, timeout=5.0):
-        # consume any unsolicited messages first, we don't need those
-        self._flush_uart()
-
-        self._uart.write(command + "\r")
-        self._uart.flush()
-        status, data = self._read_result(result_lines, timeout=timeout)
-
-        print("  -", command, status, data)
-
-        if status not in ["OK", "DOWNLOAD"]:
-            raise CellularError(f"non 'OK' or 'DOWNLOAD' result for command {command}")
-
-        if result_lines == 1:
-            return data[0]
-        if result_lines > 1:
-            return data
-        return None
-
-    def _read_result(self, result_lines, timeout=1.0):
-        status = None
-        result = []
-        start = time.ticks_ms()
-        timeout *= 1000
-        while len(result) < result_lines or status is None:
-            if (time.ticks_ms() - start) > timeout:
-                raise CellularError("cellular module timed out")
-
-            line = self._uart.readline()
-
-            if line:
-                line = line.strip()
-                if line in [b"OK", b"ERROR", b"DOWNLOAD"]:
-                    status = line.decode("ascii")
-                elif line != b"":
-                    result.append(str(line, "ascii"))
-                start = time.ticks_ms()
-
-        return status, result
-
-    def send_text_message(self, recipient, body, timeout=5.0):
-        self._uart.write("AT+CMGS=\"")
-        self._uart.write(recipient.encode("ascii"))
-        self._uart.write(b"\"\r")
-        time.sleep(0.5)
-        self._uart.write(body.encode("ascii"))
-        self._uart.write(b"\x1a\r")
-        self._uart.flush()
-
-        status, _ = self._read_result(1, timeout=timeout)
-
-        return status == "OK"