diff --git a/.github/workflows/micropython.yml b/.github/workflows/micropython.yml
new file mode 100644
index 0000000..5026a8d
--- /dev/null
+++ b/.github/workflows/micropython.yml
@@ -0,0 +1,129 @@
+name: MicroPython
+
+on:
+  push:
+  pull_request:
+  release:
+    types: [created]
+
+env:
+  MICROPYTHON_VERSION: feature/psram
+  MICROPYTHON_FLAVOUR: pimoroni
+  PIMORONI_PICO_VERSION: feature/sdk-2.0.0
+
+jobs:
+  build:
+    name: ${{ matrix.name }} (${{ matrix.board }} ${{ matrix.variant }} ${{ matrix.modules }})
+    runs-on: ubuntu-20.04
+    continue-on-error: true
+    strategy:
+      matrix:
+        include:
+        - name: pga2040
+          board: pga2040
+          modules: default
+        - name: pga2350
+          board: pga2350
+          modules: default
+        - name: pga2350-psram  # Friendly-name for output files
+          board: pga2350       # /<board>
+          variant: PSRAM       # /<board>/mpconfigvariant_<variant>.cmake
+          modules: default     # /modules/<modules>.cmake
+
+    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 }}-micropython
+      PIMORONI_PICO_DIR: "${{ github.workspace }}/pimoroni-pico"
+      MICROPY_BOARD_DIR: "${{ github.workspace }}/src-${{ github.sha }}/${{ matrix.BOARD }}"
+      USER_C_MODULES: "${{ github.workspace }}/src-${{ github.sha }}/modules/${{ matrix.modules }}.cmake"
+      TAG_OR_SHA: ${{ github.event.release.tag_name || github.sha }}
+      MICROPY_BOARD: ${{ matrix.board }}
+      MICROPY_BOARD_VARIANT: ${{ matrix.variant }}
+      BOARD_NAME: ${{ matrix.name }}
+      BUILD_TOOLS: src-${{ github.sha }}/ci/micropython.sh
+
+    steps:
+    - name: "CCache: Restore saved cache"
+      uses: actions/cache@v4
+      with:
+        path: /home/runner/.ccache
+        key: ccache-micropython-${{ matrix.name }}-${{ github.ref }}-${{ github.sha }}
+        restore-keys: |
+          ccache-micropython-${{ matrix.name }}-${{ github.ref }}
+          ccache-micropython-${{ matrix.name }}-
+
+    - name: "Src: Checkout"
+      uses: actions/checkout@v4
+      with:
+        submodules: true
+        path: src-${{ github.sha }}
+
+    - name: "Pimoroni Pico: Checkout"
+      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)
+      uses: carlosperate/arm-none-eabi-gcc-action@v1
+      with:
+        release: '9-2020-q2'
+
+    - name: "CCache: Install"
+      run: |
+        source $BUILD_TOOLS
+        apt_install_build_deps
+      
+    - name: "MicroPython: Checkout"
+      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: "MicroPython: Build MPY Cross"
+      run: |
+        source $BUILD_TOOLS
+        micropython_build_mpy_cross
+
+    - name: "MicroPython: Configure"
+      shell: bash
+      run: |
+        source $BUILD_TOOLS
+        micropython_version
+        cmake_configure
+
+    - name: "MicroPython: Build"
+      shell: bash
+      run: |
+        source $BUILD_TOOLS
+        cmake_build
+
+    - name: "Py_Decl: Verify UF2"
+      shell: bash
+      run: |
+        python3 py_decl/py_decl.py --to-json --verify build-${{ matrix.name }}/${{ env.RELEASE_FILE }}.uf2
+
+    - name: Store .uf2 as artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ env.RELEASE_FILE }}.uf2
+        path: build-${{ matrix.name }}/${{ env.RELEASE_FILE }}.uf2
+
+    - name: Upload .uf2
+      if: github.event_name == 'release'
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        asset_path: build-${{ matrix.name }}/firmware.uf2
+        upload_url: ${{ github.event.release.upload_url }}
+        asset_name: ${{ env.RELEASE_FILE }}.uf2
+        asset_content_type: application/octet-stream
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..920b6f1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,39 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+**/build
+.vscode
+
+# Apple filesystem cruft
+.DS_Store
+venv
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..009bbe1
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+# Pimoroni PGA Boilerplate
+
+This repository is intended to provide a baseline MicroPython build for PGA2040
+and PGA2350, in addition to being a minimal example of how you might set up your
+own custom MicroPython flavour to support your PGA-based project.
+
+Use this repository as a boilerplate to set up your own project, and GitHub actions
+should automatically handle building MicroPython for you.
+
+## Contents
+
+* pga2040 - MicroPython and Pico SDK board definitions for PGA2040
+* pga2350 - MicroPython and Pico SDK board definitions for PGA2350, with PSRAM variant
+* modules/c/example - An example MicroPython C++ module, demonstrating C class bindings
+* modules/py_frozen - Python files intended to be frozen into the firmware
+* modules/py_littlefs - Python files intended to be visible/editable in the LittleFS user filesystem
\ No newline at end of file
diff --git a/ci/micropython.sh b/ci/micropython.sh
new file mode 100644
index 0000000..0a4b53a
--- /dev/null
+++ b/ci/micropython.sh
@@ -0,0 +1,65 @@
+export TERM=${TERM:="xterm-256color"}
+
+function log_success {
+	echo -e "$(tput setaf 2)$1$(tput sgr0)"
+}
+
+function log_inform {
+	echo -e "$(tput setaf 6)$1$(tput sgr0)"
+}
+
+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
+    git checkout $MICROPYTHON_VERSION
+    git submodule update --init lib/pico-sdk
+    git submodule update --init lib/cyw43-driver
+    git submodule update --init lib/lwip
+    git submodule update --init lib/mbedtls
+    git submodule update --init lib/micropython-lib
+    git submodule update --init lib/tinyusb
+    git submodule update --init lib/btstack
+    cd ../
+}
+
+function micropython_build_mpy_cross {
+    cd micropython/mpy-cross
+    ccache --zero-stats || true
+    CROSS_COMPILE="ccache " make
+    ccache --show-stats || true
+    cd ../../
+}
+
+function apt_install_build_deps {
+    sudo apt update && sudo apt install ccache
+}
+
+function micropython_version {
+    echo "MICROPY_GIT_TAG=$MICROPYTHON_VERSION, $BOARD_NAME $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 \
+    -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 \
+    -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+    -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+}
+
+function cmake_build {
+    ccache --zero-stats || true
+    cmake --build build-$BOARD_NAME -j 2
+    ccache --show-stats || true
+    cd build-$BOARD_NAME
+    cp firmware.uf2 $RELEASE_FILE.uf2
+}
\ No newline at end of file
diff --git a/modules/c/example/example.c b/modules/c/example/example.c
new file mode 100644
index 0000000..68156b8
--- /dev/null
+++ b/modules/c/example/example.c
@@ -0,0 +1,37 @@
+#include <example.h>
+
+MP_DEFINE_CONST_FUN_OBJ_1(example__del__obj, example__del__);
+
+MP_DEFINE_CONST_FUN_OBJ_3(example_method_obj, example_method);
+
+// Class Methods
+static const mp_rom_map_elem_t example_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&example__del__obj) },
+    { MP_ROM_QSTR(MP_QSTR_mul), MP_ROM_PTR(&example_method_obj) }
+};
+
+static MP_DEFINE_CONST_DICT(example_locals_dict, example_locals_dict_table);
+
+MP_DEFINE_CONST_OBJ_TYPE(
+    Example_type,
+    MP_QSTR_Example,
+    MP_TYPE_FLAG_NONE,
+    make_new, example_make_new,
+    locals_dict, (mp_obj_dict_t*)&example_locals_dict
+);
+
+// Module Methods
+static const mp_map_elem_t example_globals_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_example) },  // Module name
+    { MP_OBJ_NEW_QSTR(MP_QSTR_Example), (mp_obj_t)&Example_type },            // Class name & type
+};
+
+static MP_DEFINE_CONST_DICT(mp_module_example_globals, example_globals_table);
+
+const mp_obj_module_t example_user_c_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&mp_module_example_globals,
+};
+
+// First argument should match the __name__ given in the globals table
+MP_REGISTER_MODULE(MP_QSTR_example, example_user_c_module);
\ No newline at end of file
diff --git a/modules/c/example/example.cpp b/modules/c/example/example.cpp
new file mode 100644
index 0000000..b65268f
--- /dev/null
+++ b/modules/c/example/example.cpp
@@ -0,0 +1,67 @@
+#include <new> // Required for allocating C classes into MicroPython heap with placement new
+
+class Example {
+    public:
+        Example () {
+
+        }
+
+        int mul(int a, int b) {
+            return a * b;
+        }
+
+        ~Example () {
+
+        }
+};
+
+// Explicitly typed variant of MP_OBJ_TO_PTR to make C++ happy
+#define MP_OBJ_TO_PTR_T(o, t) ((t *)(o))
+
+// Macro for assigning *self in class methods
+#define __self__ MP_OBJ_TO_PTR_T(self_in, Example_obj_t)
+
+
+extern "C" {
+#include "example.h"
+
+typedef struct Example_obj_t  {
+    mp_obj_base_t base;
+    void *pins;
+    Example *cls;
+} Example_obj_t;
+
+mp_obj_t example_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    Example_obj_t *self = mp_obj_malloc_with_finaliser(Example_obj_t, &Example_type);
+
+    // Use C++ "placement new" to place an instance of our C++ class in
+    // memory allocated by MicroPython's m_new.
+    self->cls = new(m_new(Example, 1)) Example();
+    
+    return MP_OBJ_FROM_PTR(self);
+}
+
+mp_obj_t example__del__(mp_obj_t self_in) {
+    // Explicitly call the destructor
+    // self->class->~Example();
+
+    // Or use delete
+    delete(__self__->cls);
+
+    // Explicitly inform the GC that the memory is free
+    // Usually this object is deleted and the pointer goes out of scope
+    // and gets GC'd anyway so we don't *need* to do this.
+    m_del(Example, __self__->cls, 1);
+
+    return mp_const_none;
+}
+
+mp_obj_t example_method(mp_obj_t self_in, mp_obj_t a_in, mp_obj_t b_in) {
+    int a = mp_obj_get_int(a_in);
+    int b = mp_obj_get_int(b_in);
+
+    int c = __self__->cls->mul(a, b);
+
+    return mp_obj_new_int(c);
+}
+};
\ No newline at end of file
diff --git a/modules/c/example/example.h b/modules/c/example/example.h
new file mode 100644
index 0000000..085dcb2
--- /dev/null
+++ b/modules/c/example/example.h
@@ -0,0 +1,8 @@
+#include "py/runtime.h"
+
+extern const mp_obj_type_t Example_type;
+
+extern mp_obj_t example_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args);
+extern mp_obj_t example__del__(mp_obj_t self_in);
+
+extern mp_obj_t example_method(mp_obj_t self_in, mp_obj_t a_in, mp_obj_t b_in);
\ No newline at end of file
diff --git a/modules/c/example/micropython.cmake b/modules/c/example/micropython.cmake
new file mode 100644
index 0000000..853de6e
--- /dev/null
+++ b/modules/c/example/micropython.cmake
@@ -0,0 +1,16 @@
+# Create an INTERFACE library for our CPP module.
+add_library(usermod_pga_example INTERFACE)
+
+# Add our source files to the library.
+target_sources(usermod_pga_example INTERFACE
+    ${CMAKE_CURRENT_LIST_DIR}/example.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/example.c
+)
+
+# Add the current directory as an include directory.
+target_include_directories(usermod_pga_example INTERFACE
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+
+# Link our INTERFACE library to the usermod target.
+target_link_libraries(usermod INTERFACE usermod_pga_example)
\ No newline at end of file
diff --git a/modules/default.cmake b/modules/default.cmake
new file mode 100644
index 0000000..37272f6
--- /dev/null
+++ b/modules/default.cmake
@@ -0,0 +1,26 @@
+if(NOT DEFINED PIMORONI_PICO_PATH)
+set(PIMORONI_PICO_PATH ../pimoroni-pico)
+endif()
+include(${CMAKE_CURRENT_LIST_DIR}/../pimoroni_pico_import.cmake)
+
+include_directories(${PIMORONI_PICO_PATH}/micropython)
+
+list(APPEND CMAKE_MODULE_PATH "${PIMORONI_PICO_PATH}/micropython")
+list(APPEND CMAKE_MODULE_PATH "${PIMORONI_PICO_PATH}/micropython/modules")
+
+# Allows us to find /pga/modules/c/<module>/micropython
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+include(c/example/micropython)
+
+# include(micropython-common)
+# enable_ulab()
+
+# C++ Magic Memory
+# include(cppmem/micropython)
+
+# Disable build-busting C++ exceptions
+include(micropython-disable-exceptions)
\ No newline at end of file
diff --git a/modules/frozen.py b/modules/frozen.py
new file mode 100644
index 0000000..e69de29
diff --git a/modules/littlefs.txt b/modules/littlefs.txt
new file mode 100644
index 0000000..f2e897a
--- /dev/null
+++ b/modules/littlefs.txt
@@ -0,0 +1 @@
+lib/*/*.py
\ No newline at end of file
diff --git a/pga2040/manifest.py b/pga2040/manifest.py
new file mode 100644
index 0000000..8505dcb
--- /dev/null
+++ b/pga2040/manifest.py
@@ -0,0 +1,5 @@
+# Include the manifest.py from micropython/ports/rp2/boards/manifest.py
+include("$(PORT_DIR)/boards/manifest.py")
+
+# Include frozen.py from pga/modules/frozen.py
+include("../modules/frozen.py")
\ No newline at end of file
diff --git a/pga2040/mpconfigboard.cmake b/pga2040/mpconfigboard.cmake
new file mode 100644
index 0000000..c2bc3c5
--- /dev/null
+++ b/pga2040/mpconfigboard.cmake
@@ -0,0 +1,13 @@
+# cmake file for the Pimoroni PGA2040
+set(PICO_BOARD "pga2040")
+set(PICO_PLATFORM "rp2040")
+
+# Make sure we find pga2040.h (PICO_BOARD) in the current dir
+set(PICO_BOARD_HEADER_DIRS ${CMAKE_CURRENT_LIST_DIR})
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+# If USER_C_MODULES or MicroPython customisations use malloc then
+# there needs to be some RAM reserved for the C heap
+set(MICROPY_C_HEAP_SIZE 4096)
diff --git a/pga2040/mpconfigboard.h b/pga2040/mpconfigboard.h
new file mode 100644
index 0000000..6cfced4
--- /dev/null
+++ b/pga2040/mpconfigboard.h
@@ -0,0 +1,6 @@
+// Board and hardware specific configuration
+#define MICROPY_HW_BOARD_NAME                   "PGA2040"
+
+// Portion of onboard flash to reserve for the user filesystem
+// PGA2040 has 8MB flash, so reserve 1MiB for the firmware and leave 7MiB
+#define MICROPY_HW_FLASH_STORAGE_BYTES          (7 * 1024 * 1024)
diff --git a/pga2040/pga2040.h b/pga2040/pga2040.h
new file mode 100644
index 0000000..25b9dd2
--- /dev/null
+++ b/pga2040/pga2040.h
@@ -0,0 +1,81 @@
+/*
+ * 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
+// -----------------------------------------------------
+
+// pico_cmake_set PICO_PLATFORM=rp2040
+
+#ifndef _BOARDS_PIMORONI_PGA2040_H
+#define _BOARDS_PIMORONI_PGA2040_H
+
+// For board detection
+#define PIMORONI_PGA2040
+
+// --- 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
+// 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 = (8 * 1024 * 1024)
+#ifndef PICO_FLASH_SIZE_BYTES
+#define PICO_FLASH_SIZE_BYTES (8 * 1024 * 1024)
+#endif
+// All boards have B1 RP2040
+#ifndef PICO_RP2040_B0_SUPPORTED
+#define PICO_RP2040_B0_SUPPORTED 0
+#endif
+
+#endif
diff --git a/pga2040/pins.csv b/pga2040/pins.csv
new file mode 100644
index 0000000..16e3340
--- /dev/null
+++ b/pga2040/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
diff --git a/pga2350/manifest.py b/pga2350/manifest.py
new file mode 100644
index 0000000..8505dcb
--- /dev/null
+++ b/pga2350/manifest.py
@@ -0,0 +1,5 @@
+# Include the manifest.py from micropython/ports/rp2/boards/manifest.py
+include("$(PORT_DIR)/boards/manifest.py")
+
+# Include frozen.py from pga/modules/frozen.py
+include("../modules/frozen.py")
\ No newline at end of file
diff --git a/pga2350/mpconfigboard.cmake b/pga2350/mpconfigboard.cmake
new file mode 100644
index 0000000..d25ae32
--- /dev/null
+++ b/pga2350/mpconfigboard.cmake
@@ -0,0 +1,14 @@
+# cmake file for the Pimoroni PGA2350
+set(PICO_BOARD "pga2350")
+set(PICO_PLATFORM "rp2350-arm-s")
+set(PICO_NUM_GPIOS 48)
+
+# Make sure we find pga2350.h (PICO_BOARD) in the current dir
+set(PICO_BOARD_HEADER_DIRS ${CMAKE_CURRENT_LIST_DIR})
+
+# Board specific version of the frozen manifest
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
+
+# If USER_C_MODULES or MicroPython customisations use malloc then
+# there needs to be some RAM reserved for the C heap
+set(MICROPY_C_HEAP_SIZE 4096)
\ No newline at end of file
diff --git a/pga2350/mpconfigboard.h b/pga2350/mpconfigboard.h
new file mode 100644
index 0000000..802a1a4
--- /dev/null
+++ b/pga2350/mpconfigboard.h
@@ -0,0 +1,14 @@
+// Board and hardware specific configuration
+
+// Board and hardware specific configuration
+#ifndef MICROPY_HW_BOARD_NAME
+// Might be defined by mpconfigvariant_VARIANT.cmake
+#define MICROPY_HW_BOARD_NAME                   "PGA2350"
+#endif
+
+// Portion of onboard flash to reserve for the user filesystem
+// PGA2350 has 16MB flash, so reserve 2MiB for the firmware and leave 14MiB
+#define MICROPY_HW_FLASH_STORAGE_BYTES          (14 * 1024 * 1024)
+
+// Alias the chip select pin specified by pga2350.h
+#define MICROPY_HW_PSRAM_CS_PIN                 PIMORONI_PGA2350_PSRAM_CS_PIN
diff --git a/pga2350/mpconfigvariant.cmake b/pga2350/mpconfigvariant.cmake
new file mode 100644
index 0000000..e69de29
diff --git a/pga2350/mpconfigvariant_PSRAM.cmake b/pga2350/mpconfigvariant_PSRAM.cmake
new file mode 100644
index 0000000..8bee1f2
--- /dev/null
+++ b/pga2350/mpconfigvariant_PSRAM.cmake
@@ -0,0 +1,5 @@
+# Override the MicroPython board name
+list(APPEND MICROPY_DEF_BOARD
+    "MICROPY_HW_ENABLE_PSRAM=1"
+    "MICROPY_HW_BOARD_NAME=\"PGA2350 (PSRAM)\""
+)
diff --git a/pga2350/pga2350.h b/pga2350/pga2350.h
new file mode 100644
index 0000000..9690f13
--- /dev/null
+++ b/pga2350/pga2350.h
@@ -0,0 +1,92 @@
+/*
+ * 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/pimoroni_pga2350.h"
+
+// pico_cmake_set PICO_PLATFORM=rp2350
+
+#ifndef _BOARDS_PIMORONI_PGA2350_H
+#define _BOARDS_PIMORONI_PGA2350_H
+
+// For board detection
+#define PIMORONI_PGA2350
+#define PIMORONI_PGA2350_16MB
+
+// --- BOARD SPECIFIC ---
+#define PIMORONI_PGA2350_PSRAM_CS_PIN 47
+
+// --- 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 = (16 * 1024 * 1024)
+#ifndef PICO_FLASH_SIZE_BYTES
+#define PICO_FLASH_SIZE_BYTES (16 * 1024 * 1024)
+#endif
+
+// no PICO_SMPS_MODE_PIN
+// no PICO_VBUS_PIN
+// no PICO_VSYS_PIN
+
+#ifndef PICO_RP2350_A2_SUPPORTED
+#define PICO_RP2350_A2_SUPPORTED 1
+#endif
+
+#endif
diff --git a/pga2350/pins.csv b/pga2350/pins.csv
new file mode 100644
index 0000000..9d58ee8
--- /dev/null
+++ b/pga2350/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
\ No newline at end of file
diff --git a/pimoroni_pico_import.cmake b/pimoroni_pico_import.cmake
new file mode 100644
index 0000000..97a72ec
--- /dev/null
+++ b/pimoroni_pico_import.cmake
@@ -0,0 +1,56 @@
+# This file can be dropped into a project to help locate the Pimoroni Pico libraries
+# It will also set up the required include and module search paths.
+
+if (DEFINED ENV{PIMORONI_PICO_FETCH_FROM_GIT} AND (NOT PIMORONI_PICO_FETCH_FROM_GIT))
+    set(PIMORONI_PICO_FETCH_FROM_GIT $ENV{PIMORONI_PICO_FETCH_FROM_GIT})
+    message("Using PIMORONI_PICO_FETCH_FROM_GIT from environment ('${PIMORONI_PICO_FETCH_FROM_GIT}')")
+endif ()
+
+if (DEFINED ENV{PIMORONI_PICO_FETCH_FROM_GIT_PATH} AND (NOT PIMORONI_PICO_FETCH_FROM_GIT_PATH))
+    set(PIMORONI_PICO_FETCH_FROM_GIT_PATH $ENV{PIMORONI_PICO_FETCH_FROM_GIT_PATH})
+    message("Using PIMORONI_PICO_FETCH_FROM_GIT_PATH from environment ('${PIMORONI_PICO_FETCH_FROM_GIT_PATH}')")
+endif ()
+
+if (NOT PIMORONI_PICO_PATH)
+    if (PIMORONI_PICO_FETCH_FROM_GIT)
+        include(FetchContent)
+        set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
+        if (PIMORONI_PICO_FETCH_FROM_GIT_PATH)
+            get_filename_component(FETCHCONTENT_BASE_DIR "${PIMORONI_PICO_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
+        endif ()
+        FetchContent_Declare(
+                pimoroni_pico
+                GIT_REPOSITORY https://github.com/pimoroni/pimoroni-pico
+                GIT_TAG main
+        )
+        if (NOT pimoroni_pico)
+            message("Downloading PIMORONI_PICO SDK")
+            FetchContent_Populate(pimoroni_pico)
+            set(PIMORONI_PICO_PATH ${pimoroni_pico_SOURCE_DIR})
+        endif ()
+        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
+    elseif(PICO_SDK_PATH AND EXISTS "${PICO_SDK_PATH}/../pimoroni-pico")
+        set(PIMORONI_PICO_PATH ${PICO_SDK_PATH}/../pimoroni-pico)
+        message("Defaulting PIMORONI_PICO_PATH as sibling of PICO_SDK_PATH: ${PIMORONI_PICO_PATH}")
+    elseif(EXISTS "${CMAKE_CURRENT_BINARY_DIR}/../../pimoroni-pico/")
+        set(PIMORONI_PICO_PATH ${CMAKE_CURRENT_BINARY_DIR}/../../pimoroni-pico/)
+    else()
+        message(FATAL_ERROR "Pimoroni Pico location was not specified. Please set PIMORONI_PICO_PATH.")
+    endif()
+endif()
+
+get_filename_component(PIMORONI_PICO_PATH "${PIMORONI_PICO_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
+if (NOT EXISTS ${PIMORONI_PICO_PATH})
+    message(FATAL_ERROR "Directory '${PIMORONI_PICO_PATH}' not found")
+endif ()
+
+if (NOT EXISTS ${PIMORONI_PICO_PATH}/pimoroni_pico_import.cmake)
+    message(FATAL_ERROR "Directory '${PIMORONI_PICO_PATH}' does not appear to contain the Pimoroni Pico libraries")
+endif ()
+
+message("PIMORONI_PICO_PATH is ${PIMORONI_PICO_PATH}")
+
+set(PIMORONI_PICO_PATH ${PIMORONI_PICO_PATH} CACHE PATH "Path to the Pimoroni Pico libraries" FORCE)
+
+include_directories(${PIMORONI_PICO_PATH})
+list(APPEND CMAKE_MODULE_PATH ${PIMORONI_PICO_PATH})
\ No newline at end of file