initial

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: Wokwi-CI Build
+
+on: [push, pull_request]
+
+# jobs:
+#   build:
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         target: [esp32, esp32s2, esp32s3, esp32c3, esp32h2, esp32c6, esp32p4]
+#     runs-on: ubuntu-latest
+#     steps:
+#       - uses: actions/checkout@v4
+#       - uses: espressif/esp-idf-ci-action@v1
+#         with:
+#           esp_idf_version: v5.3
+#           target: ${{ matrix.target }}
+#       - name: Copy diagram ${{ matrix.target }}
+#         run: |
+#           cp .github/workflows/wokwi/diagram-${{ matrix.target }}.json diagram.json
+#       - uses: wokwi/wokwi-ci-action@v1
+#         with:
+#           token: ${{ secrets.WOKWI_CI_TOKEN }}
+#           timeout: 5000
+#           expect_text: 'Hello, world from C3!'

.github/workflows/wokwi/diagram-esp32.json

@@ -0,0 +1,8 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [ { "type": "board-esp32-devkit-c-v4", "id": "esp", "top": 0, "left": 0, "attrs": {} } ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.github/workflows/wokwi/diagram-esp32c3.json

@@ -0,0 +1,16 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [
+      {
+        "type": "board-esp32-c3-devkitm-1",
+        "id": "esp",
+        "top": 0,
+        "left": 0,
+        "attrs": { "builder": "esp-idf" }
+      }
+    ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.github/workflows/wokwi/diagram-esp32c6.json

@@ -0,0 +1,16 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [
+      {
+        "type": "board-esp32-c6-devkitc-1",
+        "id": "esp",
+        "top": 0,
+        "left": 0,
+        "attrs": { }
+      }
+    ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.github/workflows/wokwi/diagram-esp32h2.json

@@ -0,0 +1,16 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [
+      {
+        "type": "board-esp32-h2-devkitm-1",
+        "id": "esp",
+        "top": 0,
+        "left": 0,
+        "attrs": { "builder": "esp-idf" }
+      }
+    ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.github/workflows/wokwi/diagram-esp32p4.json

@@ -0,0 +1,14 @@
+{
+  "version": 1,
+  "author": "Uri Shaked",
+  "editor": "wokwi",
+  "parts": [
+    { "type": "board-esp32-p4-preview", "id": "esp", "top": -17.23, "left": -16.04, "attrs": {} }
+  ],
+  "connections": [
+    ["esp:TX", "$serialMonitor:RX", "", []],
+    ["esp:RX", "$serialMonitor:TX", "", []]
+  ],
+  "serialMonitor": { "display": "terminal" },
+  "dependencies": {}
+}

.github/workflows/wokwi/diagram-esp32s2.json

@@ -0,0 +1,8 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [ { "type": "board-esp32-s2-devkitm-1", "id": "esp", "top": 0, "left": 0, "attrs": {} } ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.github/workflows/wokwi/diagram-esp32s3.json

@@ -0,0 +1,8 @@
+{
+    "version": 1,
+    "author": "Juraj Michálek",
+    "editor": "wokwi",
+    "parts": [ { "type": "board-esp32-s3-devkitc-1", "id": "esp", "top": 0, "left": 0, "attrs": { "flashSize":"8"} } ],
+    "connections": [ [ "esp:TX", "$serialMonitor:RX", "", [] ], [ "esp:RX", "$serialMonitor:TX", "", [] ] ],
+    "dependencies": {}
+  }

.gitignore

@@ -10,3 +10,6 @@ compile_commands.json
 CTestTestfile.cmake
 _deps
 CMakeUserPresets.json
+build/
+build.sh
+.vscode/

CMakeLists.txt

@@ -0,0 +1,7 @@
+# The following 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)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+set(BUILD_PATH ${CMAKE_CURRENT_SOURCE_DIR})
+project(c3-sample-idf)

README.md

@@ -1,2 +1,19 @@
-# esp32-xtensa-c3
-Testing C3 lang for esp32 target
+# esp32-c3lang
+
+Testing [C3 language](http://www.c3-lang.org/) in esp32 target.
+
+## Requirments
+- [esp-idf](https://github.com/espressif/esp-idf)
+- [c3c](https://github.com/c3lang/c3c) forked to [espressif/llvm](https://github.com/espressif/llvm-project) backend
+
+## Preview
+
+```bash
+# C3 with espressif/llvm 18.1.2
+c3c --version
+C3 Compiler Version:       0.6.2 (prerelease)
+Installed directory:       /home/kassane/.local/bin/
+LLVM version:              18.1.2
+LLVM default target:       x86_64-linux-musl
+```
+![image](https://github.com/user-attachments/assets/b7160ec9-fdb0-4e1a-aa9b-8c365f56d053)

main/CMakeLists.txt

@@ -0,0 +1,58 @@
+set(DEPS pthread driver)
+
+idf_component_register(SRCS "placeholder.c"
+    INCLUDE_DIRS "."
+    PRIV_REQUIRES "${DEPS}"
+)
+
+# Based on zig-esp-idf-sample project
+
+if(CONFIG_IDF_TARGET_ARCH_RISCV)
+    set(C3_TARGET "elf-riscv32") # generic
+    # if(CONFIG_IDF_TARGET_ESP32C6 OR CONFIG_IDF_TARGET_ESP32C5 OR CONFIG_IDF_TARGET_ESP32H2)
+    #     set(TARGET_CPU_MODEL "generic_rv32+m+a+c")
+    # elseif(CONFIG_IDF_TARGET_ESP32P4)
+    #     string(REGEX REPLACE "-none" "-eabihf" C3_TARGET ${C3_TARGET})
+    #     set(TARGET_CPU_MODEL "generic_rv32+m+a+c+f")
+    # else()
+    #     set(TARGET_CPU_MODEL "generic_rv32+m+c")
+    # endif()
+elseif(CONFIG_IDF_TARGET_ARCH_XTENSA)
+    set(C3_TARGET "elf-xtensa") # generic
+    # if(CONFIG_IDF_TARGET_ESP32)
+    #     set(TARGET_CPU_MODEL "esp32")
+    # elseif(CONFIG_IDF_TARGET_ESP32S2)
+    #     set(TARGET_CPU_MODEL "esp32s2")
+    # else(CONFIG_IDF_TARGET_ESP32S3)
+    #     set(TARGET_CPU_MODEL "esp32s3")
+    # endif()
+else()
+    message(FATAL_ERROR "Unsupported target ${CONFIG_IDF_TARGET}")
+endif()
+
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(C3_BUILD_TYPE "-g0")
+else()
+    set(C3_BUILD_TYPE "-Oz")
+endif()
+
+add_custom_target(c3_build
+    COMMAND ${CMAKE_COMMAND} -E env
+    "INCLUDE_DIRS=${include_dirs}"
+    c3c
+    --no-entry
+    --use-stdlib=no
+    --link-libc=no
+    static-lib
+    -o libc3
+    app.c3
+    --output-dir ${CMAKE_BINARY_DIR}/lib
+    ${C3_BUILD_TYPE}
+    --target ${C3_TARGET}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    BYPRODUCTS ${CMAKE_BINARY_DIR}/lib/libc3.a
+    VERBATIM)
+
+add_prebuilt_library(c3 ${CMAKE_BINARY_DIR}/lib/libc3.a)
+add_dependencies(c3 c3_build)
+target_link_libraries(${COMPONENT_LIB} PRIVATE ${CMAKE_BINARY_DIR}/lib/libc3.a)

main/app.c3

@@ -0,0 +1,7 @@
+
+extern fn int printf(char* format, ...);
+
+fn void app_main() @export("app_main")
+{
+	printf("Hello World C3 language!\n");
+}

main/placeholder.c

@@ -0,0 +1 @@
+// empty file