Add initial ESP32S2 support

.github/workflows/build.yml

@@ -73,7 +73,6 @@ jobs:
     - name: New boards check
       run: python3 -u ci_new_boards_check.py
       working-directory: tools
-
     - name: Build mpy-cross.static-raspbian
       run: make -C mpy-cross -j2 -f Makefile.static-raspbian
     - uses: actions/[email protected]
@@ -359,3 +358,86 @@ jobs:
         AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
         AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
       if: github.event_name == 'push' || (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'rerequested'))
+  build-xtensa:
+    runs-on: ubuntu-latest
+    needs: test
+    strategy:
+      fail-fast: false
+      matrix:
+        board:
+        - "espressif_saola_1_wroom"
+        - "espressif_saola_1_wrover"
+
+    steps:
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+        fetch-depth: 0
+    - run: git fetch --recurse-submodules=no https://github.com/adafruit/circuitpython refs/tags/*:refs/tags/*
+    - run: git submodule sync
+    - run: git submodule foreach git remote -v
+    - run: git submodule foreach git fetch --recurse-submodules=no origin +refs/tags/*:refs/tags/*
+    - name: CircuitPython version
+      run: git describe --dirty --tags
+    - uses: actions/cache@v1
+      name: Fetch IDF tool cache
+      id: idf-cache
+      with:
+        path: ${{ github.workspace }}/.idf_tools
+        key: ${{ runner.os }}-idf-tools-${{ hashFiles('.git/modules/ports/esp32s2/esp-idf/HEAD') }}
+    - name: Install IDF tools
+      if: steps.idf-cache.outputs.cache-hit != 'true'
+      run: |
+        $IDF_PATH/tools/idf_tools.py --non-interactive install required
+        $IDF_PATH/tools/idf_tools.py --non-interactive install cmake
+        $IDF_PATH/tools/idf_tools.py --non-interactive install-python-env
+        rm -rf $IDF_TOOLS_PATH/dist
+      env:
+        IDF_PATH: ${{ github.workspace }}/ports/esp32s2/esp-idf
+        IDF_TOOLS_PATH: ${{ github.workspace }}/.idf_tools
+    - name: Install CircuitPython deps
+      run: |
+        source $IDF_PATH/export.sh
+        pip install requests sh click setuptools awscli
+        sudo apt-get install -y gettext ninja-build
+      env:
+        IDF_PATH: ${{ github.workspace }}/ports/esp32s2/esp-idf
+        IDF_TOOLS_PATH: ${{ github.workspace }}/.idf_tools
+    - name: Versions
+      run: |
+        source $IDF_PATH/export.sh
+        gcc --version
+        xtensa-esp32s2-elf-gcc --version
+        python3 --version
+        ninja --version
+        cmake --version
+      shell: bash
+      env:
+        IDF_PATH: ${{ github.workspace }}/ports/esp32s2/esp-idf
+        IDF_TOOLS_PATH: ${{ github.workspace }}/.idf_tools
+    - name: mpy-cross
+      run: make -C mpy-cross -j2
+    - name: build
+      run: |
+        source $IDF_PATH/export.sh
+        python3 -u build_release_files.py
+      working-directory: tools
+      shell: bash
+      env:
+        IDF_PATH: ${{ github.workspace }}/ports/esp32s2/esp-idf
+        IDF_TOOLS_PATH: ${{ github.workspace }}/.idf_tools
+        BOARDS: ${{ matrix.board }}
+    - uses: actions/[email protected]
+      with:
+        name: ${{ matrix.board }}
+        path: bin/${{ matrix.board }}
+    - name: Upload to S3
+      run: "[ -z \"$AWS_ACCESS_KEY_ID\" ] || aws s3 cp bin/ s3://adafruit-circuit-python/bin/ --recursive --no-progress --region us-east-1"
+      env:
+        AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+        AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+      if: github.event_name == 'push' || (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'rerequested'))

.gitmodules

@@ -140,3 +140,6 @@
 [submodule "frozen/Adafruit_CircuitPython_BLE_Apple_Notification_Center"]
 	path = frozen/Adafruit_CircuitPython_BLE_Apple_Notification_Center
 	url = https://github.com/adafruit/Adafruit_CircuitPython_BLE_Apple_Notification_Center
+[submodule "ports/esp32s2/esp-idf"]
+	path = ports/esp32s2/esp-idf
+	url = https://github.com/tannewt/esp-idf.git

conf.py

@@ -136,6 +136,8 @@
                     "ports/atmel-samd/tools",
                     "ports/cxd56/mkspk",
                     "ports/cxd56/spresense-exported-sdk",
+                    "ports/esp32s2/esp-idf",
+                    "ports/esp32s2/peripherals",
                     "ports/litex/hw",
                     "ports/minimal",
                     "ports/mimxrt10xx/peripherals",

main.c

@@ -105,12 +105,18 @@ void start_mp(supervisor_allocation* heap) {
     // Stack limit should be less than real stack size, so we have a chance
     // to recover from limit hit.  (Limit is measured in bytes.)
     mp_stack_ctrl_init();
-    mp_stack_set_limit(stack_alloc->length - 1024);
+
+    if (stack_alloc != NULL) {
+        mp_stack_set_limit(stack_alloc->length - 1024);
+    }
+
 
 #if MICROPY_MAX_STACK_USAGE
     // _ezero (same as _ebss) is an int, so start 4 bytes above it.
-    mp_stack_set_bottom(stack_alloc->ptr);
-    mp_stack_fill_with_sentinel();
+    if (stack_alloc != NULL) {
+        mp_stack_set_bottom(stack_alloc->ptr);
+        mp_stack_fill_with_sentinel();
+    }
 #endif
 
     // Sync the file systems in case any used RAM from the GC to cache. As soon

ports/atmel-samd/boards/xinabox_cs11/mpconfigboard.h

@@ -22,3 +22,34 @@
 // USB is always used internally so skip the pin objects for it.
 #define IGNORE_PIN_PA24     1
 #define IGNORE_PIN_PA25     1
+
+// Turn off pins not in the board mapping to save space. They aren't broken out.
+#define IGNORE_PIN_PA00     1
+#define IGNORE_PIN_PA01     1
+#define IGNORE_PIN_PA02     1
+#define IGNORE_PIN_PA03     1
+
+#define IGNORE_PIN_PB08     1
+#define IGNORE_PIN_PB09     1
+
+#define IGNORE_PIN_PA04     1
+#define IGNORE_PIN_PA05     1
+#define IGNORE_PIN_PA06     1
+#define IGNORE_PIN_PA08     1
+
+#define IGNORE_PIN_PA13     1
+#define IGNORE_PIN_PA14     1
+#define IGNORE_PIN_PA15     1
+#define IGNORE_PIN_PA18     1
+#define IGNORE_PIN_PA20     1
+#define IGNORE_PIN_PA21     1
+
+#define IGNORE_PIN_PB22     1
+#define IGNORE_PIN_PB23     1
+
+#define IGNORE_PIN_PA27     1
+#define IGNORE_PIN_PA28     1
+#define IGNORE_PIN_PA30     1
+#define IGNORE_PIN_PA31     1
+#define IGNORE_PIN_PB02     1
+#define IGNORE_PIN_PB03     1

ports/atmel-samd/mpconfigport.h

@@ -47,8 +47,8 @@
 #define MICROPY_PY_FUNCTION_ATTRS                   (0)
 // MICROPY_PY_UJSON depends on MICROPY_PY_IO
 #define MICROPY_PY_IO                               (0)
-#define MICROPY_PY_UJSON                            (0)
 #define MICROPY_PY_REVERSE_SPECIAL_METHODS          (0)
+#define MICROPY_PY_UJSON                            (0)
 #define MICROPY_PY_UERRNO_LIST \
     X(EPERM) \
     X(ENOENT) \
@@ -79,7 +79,6 @@
 // MICROPY_PY_UJSON depends on MICROPY_PY_IO
 #define MICROPY_PY_IO                               (1)
 #define MICROPY_PY_UJSON                            (1)
-#define MICROPY_PY_REVERSE_SPECIAL_METHODS          (1)
 //      MICROPY_PY_UERRNO_LIST - Use the default
 
 #endif // SAMD51

ports/atmel-samd/supervisor/port.c

@@ -361,6 +361,10 @@ void reset_cpu(void) {
     reset();
 }
 
+supervisor_allocation* port_fixed_stack(void) {
+    return NULL;
+}
+
 uint32_t *port_stack_get_limit(void) {
     return &_ebss;
 }

ports/cxd56/supervisor/port.c

@@ -76,6 +76,10 @@ void reset_port(void) {
 void reset_to_bootloader(void) {
 }
 
+supervisor_allocation* port_fixed_stack(void) {
+    return NULL;
+}
+
 uint32_t *port_stack_get_limit(void) {
     struct tcb_s *rtcb = this_task();
 

ports/esp32s2/.gitignore

@@ -0,0 +1,2 @@
+build*
+sdkconfig.old

ports/esp32s2/CMakeLists.txt

@@ -0,0 +1,11 @@
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+set(ENV{IDF_PATH} ${CMAKE_SOURCE_DIR}/esp-idf)
+set(COMPONENTS esptool_py soc driver log main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(circuitpython)
+
+idf_build_set_property(__OUTPUT_SDKCONFIG 0)