Add esp32 build + twister (#16)

Use twister for CI.

Author: noahp

.github/workflows/ci.yml

@@ -11,29 +11,34 @@ on:
 
 jobs:
   build:
+    # Project setup dominates vs. actual per-configuration build times, so
+    # just run twister for all boards instead of splitting into separate jobs.
+    # strategy:
+    #   matrix:
+    #     board:
+    #       [
+    #         esp_wrover_kit/esp32/procpu,
+    #         esp32s3_devkitm/esp32s3/procpu,
+    #         esp32s3_devkitc/esp32s3/procpu,
+    #         esp32c3_devkitm,
+    #       ]
     runs-on: ubuntu-latest
-    container:
-      # Zephyr toolchain from here:
-      # https://github.com/zephyrproject-rtos/docker-image/pkgs/container/ci
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.6
-    env:
-      # Tell cmake where to find the zephyr sdk
-      CMAKE_PREFIX_PATH: /opt/toolchains
-
     steps:
-      - name: Checkout code
+      - name: ☑️ Checkout
         uses: actions/checkout@v4
         with:
-          path: zephyr-workspace/zephyr-esp32-example
+          path: zephyr-esp32-example
 
-      - name: ♻️ Initialize Zephyr Workspace
-        # Set up the Zephyr workspace and install the Python dependencies
-        run: |
-          cd zephyr-workspace
-          rm -rf .west
-          west init -l zephyr-esp32-example
-          west update --narrow -o=--depth=1
-          west blobs fetch hal_espressif
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.11
+
+      - name: ♻️ Setup Zephyr project
+        uses: zephyrproject-rtos/action-zephyr-setup@v1
+        with:
+          app-path: zephyr-esp32-example
+          toolchains: riscv64-zephyr-elf:xtensa-espressif_esp32_zephyr-elf:xtensa-espressif_esp32s3_zephyr-elf
 
       - name: 💾 Cache ~/.cache/ccache
         uses: actions/cache@v3
@@ -43,27 +48,19 @@ jobs:
           restore-keys: |
             ccache-v1-${{ runner.os }}-
 
-      - name: 🔨 Build Project
+      - name: 🌪️ Run twister
         run: |
-          cd zephyr-workspace
-          ccache -z
-
-          west build --sysbuild \
-            --pristine=always \
-            --board=esp32s3_devkitm/esp32s3/procpu zephyr-esp32-example \
-            -- \
-            -DCONFIG_MEMFAULT_PROJECT_KEY=\"1234\"
-
-          west build --sysbuild \
-            --pristine=always \
-            --board=esp32s3_devkitc/esp32s3/procpu zephyr-esp32-example \
-            -- \
-            -DCONFIG_MEMFAULT_PROJECT_KEY=\"1234\"
+          # not part of action-zephyr-setup
+          west blobs fetch hal_espressif
 
-          west build --sysbuild \
-            --pristine=always \
-            --board=esp32c3_devkitm zephyr-esp32-example \
-            -- \
-            -DCONFIG_MEMFAULT_PROJECT_KEY=\"1234\"
+          zephyr/scripts/twister --testsuite-root zephyr-esp32-example
 
           ccache -sv
+
+      - name: 🎨 Upload artifacts
+        uses: actions/upload-artifact@v4
+        if: ${{ always() }}
+        with:
+          name: twister-artifacts
+          path: |
+            twister-out/**/*.log

boards/esp32s3_devkitc_esp32s3_procpu.conf

@@ -1,5 +1,3 @@
-CONFIG_NET_LOG=y
-
 # Enable external SPI RAM
 CONFIG_SPI=y
 CONFIG_ESP_SPIRAM=y

boards/esp32s3_devkitc_esp32s3_procpu.overlay

@@ -11,3 +11,8 @@
 &coretemp {
 	status = "okay";
 };
+
+/* 2MB psram. This assumes target board is the ESP32-S3-DevKitC-1-N8R2 */
+&psram0 {
+	size = <DT_SIZE_M(2)>;
+};

boards/esp32s3_devkitm_esp32s3_procpu.conf

@@ -1 +0,0 @@
-CONFIG_NET_LOG=y

boards/esp_wrover_kit_procpu.conf

@@ -0,0 +1,3 @@
+&wifi {
+	status = "okay";
+};

boards/esp_wrover_kit_procpu.overlay

@@ -1,43 +1,18 @@
 common:
-  harness: net
-  tags:
-    - net
-    - wifi
+  tags: memfault
+  platform_allow:
+    - esp_wrover_kit/esp32/procpu
+    - esp32s3_devkitm/esp32s3/procpu
+    - esp32s3_devkitc/esp32s3/procpu
+    - esp32c3_devkitm
 sample:
-  description: Test wifi driver and APIs functionality
-  name: WiFi sample app
+  description: Memfault Zephyr ESP32 Example
+  name: zephyr-esp32-example
 tests:
-  sample.net.wifi:
-    platform_allow:
-      - cc3220sf_launchxl
-      - disco_l475_iot1
-      - reel_board
-    integration_platforms:
-      - cc3220sf_launchxl
-  sample.net.wifi.mikroe_wifi_bt_click:
-    extra_args: SHIELD=mikroe_wifi_bt_click_mikrobus
-    platform_allow: lpcxpresso55s69_cpu0
-  sample.net.wifi.esp_8266:
-    extra_args: SHIELD=esp_8266
-    platform_allow: sam4e_xpro
-  sample.net.wifi.esp_8266_arduino:
-    extra_args: SHIELD=esp_8266_arduino
-    platform_allow:
-      - frdm_k64f
-      - disco_l475_iot1
-    integration_platforms:
-      - frdm_k64f
-  sample.net.wifi.inventek_eswifi_arduino_uart:
-    extra_args: SHIELD=inventek_eswifi_arduino_uart
-    platform_allow:
-      - frdm_k64f
-      - nucleo_f767zi
-    integration_platforms:
-      - frdm_k64f
-  sample.net.wifi.inventek_eswifi_arduino_spi:
-    extra_args: SHIELD=inventek_eswifi_arduino_spi
-    platform_allow:
-      - frdm_k64f
-      - nucleo_f767zi
-    integration_platforms:
-      - frdm_k64f
+  sample.build:
+    build_only: true
+    extra_configs:
+      - CONFIG_MEMFAULT_PROJECT_KEY="dummy"
+      # when building with a symlinked test Memfault SDK module, need to disable
+      # the meta build output, otherwise it will fail as post-link.
+      - CONFIG_BUILD_OUTPUT_META=n

sample.yaml

@@ -2,7 +2,7 @@ manifest:
   projects:
     - name: zephyr
       url: https://github.com/zephyrproject-rtos/zephyr
-      revision: v4.0.0
+      revision: v4.1.0
       import:
         # Limit the Zephyr modules to the required set
         name-allowlist:
@@ -13,4 +13,5 @@ manifest:
     - name: memfault-firmware-sdk
       url: https://github.com/memfault/memfault-firmware-sdk
       path: modules/lib/memfault-firmware-sdk
-      revision: 1.17.0
+      # Temporarily use a fork with ESP32 support, until 1.26.0 is released
+      revision: noahp/1.25.0+esp32-support