[External apps] Allow access to ITCM RAM and reduce slot size

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Epsilon is not working like it should? Let us know!
+labels: 'bug'
+
+---
+#### Describe the bug
+A clear and concise description of what the bug is. Please describe a **single** bug per issue. Feel free to create multiple issues though!
+
+#### Screenshots
+Please provide at least one screenshot of the issue happening. This is by far the best way to quickly show any issue! To attach a screenshot, just go to our [online simulator](https://www.numworks.com/simulator), navigate to reproduce your issue, and click the "screenshot" button. Then drag'n'drop the file here!
+
+#### To Reproduce
+Steps to reproduce the behavior:
+1. Go to the '...' app
+2. Type '....'
+3. Scroll down to '....'
+4. See error
+
+#### Expected behavior
+A clear and concise description of what you expected to happen.
+
+#### Environment
+ - Epsilon version (Settings > About > Software version).
+ - The platform(s) on which the problem happens: online simulator, actual device, etc...

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for an improvement of Epsilon
+labels: 'enhancement'
+
+---
+#### Problem you'd like to fix
+Is your feature request related to a problem? Please provide a clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+Please describe a **single** improvement per issue. Feel free to open multiple issues though!
+
+#### Screenshots
+If possible, please attach a screenshot. You can go on our [online simulator](https://www.numworks.com/simulator), use the screenshot button, and drag'n'drop the file here.
+
+#### Describe the solution you'd like
+A clear and concise description of what you want to happen.
+
+#### Describe alternatives you've considered
+A clear and concise description of any alternative solutions or features you've considered.
+
+#### Additional context
+Add any other context or screenshots about the feature request here.

.github/workflows/ci-internal.yml

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+name: Internal Continuous Integration
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+env:
+  MAKEFLAGS: '-j32'
+
+jobs:
+  n0100:
+    runs-on: self-hosted
+    steps:
+      - uses: numworks/setup-arm-toolchain@2020-q4
+      - uses: actions/checkout@v2
+      - run: make MODEL=n0100 epsilon.dfu
+      - run: make MODEL=n0100 epsilon.onboarding.beta.dfu
+      - run: make MODEL=n0100 epsilon.onboarding.update.dfu
+      - run: make MODEL=n0100 test.dfu
+  n0110:
+    runs-on: self-hosted
+    steps:
+      - uses: numworks/setup-arm-toolchain@2020-q4
+      - uses: actions/checkout@v2
+      - run: make MODEL=n0110 kernel.A.elf
+      - run: make MODEL=n0110 userland.A.elf
+      - run: make MODEL=n0110 userland.onboarding.beta.A.elf
+      - run: make MODEL=n0110 userland.onboarding.update.A.elf
+      - run: make MODEL=n0110 userland.test.A.elf
+      - run: make MODEL=n0110 kernel.B.elf
+      - run: make MODEL=n0110 userland.B.elf
+      - run: make MODEL=n0110 userland.test.B.elf
+      - run: make MODEL=n0110 flasher.dfu
+      - run: make MODEL=n0110 bench.ram.dfu
+  linux:
+    runs-on: self-hosted
+    steps:
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator epsilon.bin test.bin
+      - run: timeout 5m output/release/simulator/linux/test.bin --headless --limit-stack-usage
+  web:
+    runs-on: self-hosted
+    steps:
+      - uses: numworks/setup-emscripten@v1
+        with:
+          sdk: 1.39.16-fastcomp
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator TARGET=web
+      - run: make PLATFORM=simulator TARGET=web epsilon.zip
+      - run: make PLATFORM=simulator TARGET=web test.js
+      - run: timeout 5m node output/release/simulator/web/test.js --headless --limit-stack-usage

.github/workflows/ci.yml

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+name: Continuous Integration
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+env:
+  MAKEFLAGS: '-j2'
+
+jobs:
+  android:
+    runs-on: ubuntu-latest
+    steps:
+      - run: pip3 install lz4
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator TARGET=android
+      - run: make PLATFORM=simulator TARGET=android epsilon.apk
+      - run: make PLATFORM=simulator TARGET=android test.apk
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-android.apk
+          path: output/release/simulator/android/epsilon.apk
+  n0100:
+    runs-on: ubuntu-latest
+    steps:
+      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
+      - run: pip3 install lz4 pypng stringcase
+      - uses: numworks/setup-arm-toolchain@2020-q2
+      - uses: actions/checkout@v2
+      - run: make MODEL=n0100 epsilon.dfu
+      - run: make MODEL=n0100 epsilon.onboarding.beta.dfu
+      - run: make MODEL=n0100 epsilon.onboarding.update.dfu
+      - run: make MODEL=n0100 test.dfu
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-n0100.dfu
+          path: output/release/device/n0100/epsilon.dfu
+  n0110:
+    runs-on: ubuntu-latest
+    steps:
+      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
+      - run: pip3 install lz4
+      - uses: numworks/setup-arm-toolchain@2020-q2
+      - uses: actions/checkout@v2
+      - run: make MODEL=n0110 kernel.A.elf
+      - run: make MODEL=n0110 userland.A.elf
+      - run: make MODEL=n0110 userland.onboarding.beta.A.elf
+      - run: make MODEL=n0110 userland.onboarding.update.A.elf
+      - run: make MODEL=n0110 userland.test.A.elf
+      - run: make MODEL=n0110 kernel.B.elf
+      - run: make MODEL=n0110 userland.B.elf
+      - run: make MODEL=n0110 userland.test.B.elf
+      - run: make MODEL=n0110 flasher.dfu
+      - run: make MODEL=n0110 bench.ram.dfu
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-n0110.dfu
+          path: output/release/device/n0110/epsilon.dfu
+  windows:
+    runs-on: windows-latest
+    defaults:
+       run:
+         shell: msys2 {0}
+    steps:
+      - uses: msys2/setup-msys2@v2
+      - uses: actions/checkout@v2
+      - run: pacman -S --noconfirm mingw-w64-x86_64-gcc mingw-w64-x86_64-freetype mingw-w64-x86_64-pkg-config make mingw-w64-x86_64-python3 mingw-w64-x86_64-libjpeg-turbo mingw-w64-x86_64-libpng mingw-w64-x86_64-imagemagick mingw-w64-x86_64-librsvg mingw-w64-x86_64-inkscape mingw-w64-x86_64-python3-pip
+      - run: pip3 install lz4
+      - run: make PLATFORM=simulator
+      - run: make PLATFORM=simulator epsilon.exe
+      - run: make PLATFORM=simulator test.exe
+      - run: cmd /c output\release\simulator\windows\test.exe --headless --limit-stack-usage
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-windows.exe
+          path: output/release/simulator/windows/epsilon.exe
+  web:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: numworks/setup-emscripten@v1
+        with:
+          sdk: 1.39.16-fastcomp
+      - run: pip3 install lz4
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator TARGET=web
+      - run: make PLATFORM=simulator TARGET=web epsilon.zip
+      - run: make PLATFORM=simulator TARGET=web test.js
+      - run: node output/release/simulator/web/test.js --headless --limit-stack-usage
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-web.zip
+          path: output/release/simulator/web/epsilon.zip
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
+      - run: pip3 install lz4
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator
+      - run: make PLATFORM=simulator epsilon.bin
+      - run: make PLATFORM=simulator test.bin
+      - run: output/release/simulator/linux/test.bin --headless --limit-stack-usage
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-linux.bin
+          path: output/release/simulator/linux/epsilon.bin
+  macos:
+    runs-on: macOS-latest
+    steps:
+      - run: brew install numworks/tap/epsilon-sdk
+      - run: pip3 install lz4 # TODO: should be part of brew formula
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator
+      - run: make PLATFORM=simulator epsilon.app
+      - run: make PLATFORM=simulator ARCH=x86_64 test.bin
+      - run: output/release/simulator/macos/x86_64/test.bin --headless --limit-stack-usage
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-macos.zip
+          path: output/release/simulator/macos/epsilon.app
+  ios:
+    runs-on: macOS-latest
+    steps:
+      - run: brew install numworks/tap/epsilon-sdk
+      - run: pip3 install lz4 # TODO: should be part of brew formula
+      - uses: actions/checkout@v2
+      - run: make PLATFORM=simulator TARGET=ios EPSILON_TELEMETRY=0
+      - run: make PLATFORM=simulator TARGET=ios EPSILON_TELEMETRY=0 epsilon.ipa
+      - run: make PLATFORM=simulator TARGET=ios EPSILON_TELEMETRY=0 test.ipa
+      - run: make PLATFORM=simulator TARGET=ios EPSILON_TELEMETRY=0 APPLE_PLATFORM=ios-simulator
+      - uses: actions/upload-artifact@master
+        with:
+          name: epsilon-ios.ipa
+          path: output/release/simulator/ios/epsilon.ipa

.github/workflows/compare_screenshots.yml

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+name: Compare Screenshots
+on:
+  pull_request:
+  workflow_dispatch:
+    inputs:
+      downloadArtifacts:
+        description: 'Download screenshots and executables'
+        required: true
+        default: 'yes'
+
+jobs:
+  compare_screenshots:
+    runs-on: self-hosted
+    steps:
+      - name: Checkout PR head
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Compare screenshot images
+        run: ./build/compare/compare.sh MAKEFLAGS="-j32 PLATFORM=simulator DEBUG=1" tests/screenshots_dataset/scenarii/ tests/screenshots_dataset/reference_images/ ${{ github.event.pull_request.head.sha }}
+      - name: Gather screenshots
+        if: ${{ github.event.inputs.downloadArtifacts == 'yes' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: screenshots
+          path: compare_output_*/
+      - name: Cleanup
+        if: always()
+        run: rm -rf compare_output_*

.github/workflows/metrics-internal.yml

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+name: Internal Metrics
+on: [pull_request_target]
+env:
+  MAKEFLAGS: '-j32'
+
+jobs:
+  binary-size:
+    runs-on: self-hosted
+    steps:
+      - name: Install ARM toolchain
+        uses: numworks/setup-arm-toolchain@2020-q4
+      - name: Checkout PR base
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: base
+      - name: Build base for N0100
+        run: make -C base MODEL=n0100 kernel.elf && make -C base MODEL=n0100 userland.elf
+      - name: Build base for N0110
+        run: make -C base kernel.A.elf && make -C base userland.A.elf
+      - name: Checkout PR head
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: head
+      - name: Build head for N0100
+        run: make -C head MODEL=n0100 kernel.elf && make -C head MODEL=n0100 userland.elf
+      - name: Build head for N0110
+        run: make -C head kernel.A.elf && make -C head userland.A.elf
+      - name: Retrieve binary size analysis
+        id: binary_size
+        run: echo "::set-output name=n0100kernel::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0100/kernel/kernel.elf head/output/release/device/n0100/kernel/kernel.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0100userland::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0100/userland/userland.elf head/output/release/device/n0100/userland/userland.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0110kernel::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0110/kernel/kernel.A.elf head/output/release/device/n0110/kernel/kernel.A.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0110userland::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0110/userland/userland.A.elf head/output/release/device/n0110/userland/userland.A.elf --labels Base Head --sections .text .rodata .bss .data --escape)"
+      - name: Add comment for N100
+        uses: actions/[email protected]
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            await github.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: `# Binary size for N0100 firmware\n### Kernel\n${{ steps.binary_size.outputs.n0100kernel }}\n### Userland\n${{ steps.binary_size.outputs.n0100userland }}`,
+            });
+      - name: Add comment for N110
+        uses: actions/[email protected]
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            await github.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: `# Binary size for N0110 firmware\n### Kernel\n${{ steps.binary_size.outputs.n0110kernel }}\n### Userland\n${{ steps.binary_size.outputs.n0110userland }}`,
+            });

.github/workflows/metrics.yml

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+name: Internal Metrics
+on: [pull_request_target]
+
+jobs:
+  binary-size:
+    steps:
+      - name: Install ARM toolchain
+        uses: numworks/setup-arm-toolchain@2020-q4
+      - name: Checkout PR base
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: base
+      - name: Build base for N0100
+        run: make -C base MODEL=n0100 kernel.elf && make -C base MODEL=n0100 userland.elf
+      - name: Build base for N0110
+        run: make -C base kernel.A.elf && make -C base userland.A.elf
+      - name: Checkout PR head
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: head
+      - name: Build head for N0100
+        run: make -C head MODEL=n0100 kernel.elf && make -C head MODEL=n0100 userland.elf
+      - name: Build head for N0110
+        run: make -C head kernel.A.elf && make -C head userland.A.elf
+      - name: Retrieve binary size analysis
+        id: binary_size
+        run: echo "::set-output name=n0100kernel::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0100/kernel/kernel.elf head/output/release/device/n0100/kernel/kernel.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0100userland::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0100/userland/userland.elf head/output/release/device/n0100/userland/userland.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0110kernel::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0110/kernel/kernel.A.elf head/output/release/device/n0110/kernel/kernel.A.elf --labels Base Head --sections .text .rodata .bss .data --escape)" && echo "::set-output name=n0110userland::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0110/userland/userland.A.elf head/output/release/device/n0110/userland/userland.A.elf --labels Base Head --sections .text .rodata .bss .data --escape)"
+      - name: Add comment for N100
+        uses: actions/[email protected]
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            await github.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: `# Binary size for N0100 firmware\n### Kernel\n${{ steps.binary_size.outputs.n0100kernel }}\n### Userland\n${{ steps.binary_size.outputs.n0100userland }}`,
+            });
+      - name: Add comment for N110
+        uses: actions/[email protected]
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            await github.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              body: `# Binary size for N0110 firmware\n### Kernel\n${{ steps.binary_size.outputs.n0110kernel }}\n### Userland\n${{ steps.binary_size.outputs.n0110userland }}`,
+            });