42 lines
2.1 KiB
Python
42 lines
2.1 KiB
Python
#!/usr/bin/env python3
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# trunk-ignore-all(ruff/F821)
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# trunk-ignore-all(flake8/F821): For SConstruct imports
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#
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# Firmware-specific Emscripten *link* settings for [env:native-wasm].
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#
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# PlatformIO routes `build_flags` to the compile step, not the link step, so the
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# WASM node's link-time emscripten settings have to be appended to LINKFLAGS
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# here. The generic, app-agnostic flags (Asyncify, MODULARIZE, ALLOW_MEMORY_
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# GROWTH, the ES6 module shape) live in the platform-wasm builder; what belongs
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# to *this firmware* is:
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#
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# * EXPORT_NAME - the ES-module factory name consumers import.
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# * EXPORTED_RUNTIME_METHODS - ccall/cwrap/callMain + FS/IDBFS/NODEFS/PATH and
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# the string helpers the JS host + bridge drive.
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# * EXPORTED_FUNCTIONS - the C entry points (the wasm_* API is also kept via
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# EMSCRIPTEN_KEEPALIVE in source; _malloc/_free are
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# needed so the host can marshal protobuf buffers).
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# * ASYNCIFY_IMPORTS - the WebUSB seam: these imported C functions suspend
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# the stack (Asyncify) while a WebUSB transfer awaits.
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#
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# Only attached to the wasm env (see extra_scripts in [env:native-wasm]); a guard keeps
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# it inert if it is ever pulled into another env.
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#
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Import("env")
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if env["PIOENV"] == "native-wasm":
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env.Append(
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LINKFLAGS=[
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"-sEXPORT_NAME=createMeshNode",
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"-sEXPORTED_RUNTIME_METHODS=ccall,cwrap,callMain,FS,IDBFS,NODEFS,PATH,HEAPU8,UTF8ToString,stringToUTF8",
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"-sEXPORTED_FUNCTIONS=_main,_wasm_setup,_wasm_loop_once,_wasm_fs_sync,"
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"_wasm_set_region,_wasm_api_to_radio,_wasm_api_from_radio,"
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"_wasm_api_available,_wasm_api_is_connected,_wasm_set_lora_module,"
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"_wasm_set_lora_usb_ids,_wasm_set_lora_usb_serial,"
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"_wasm_set_lora_dio_config,_wasm_set_lora_spi_speed,_wasm_set_lora_pin,"
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"_malloc,_free",
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"-sASYNCIFY_IMPORTS=webusb_open,webusb_transceive,webusb_digital_write,"
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"webusb_digital_read,webusb_close",
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]
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)
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