本地增加 arduino 模拟执行

Makefile

@@ -12,8 +12,12 @@ build-wasm:
 win-exe-icon:
 	windres -o main_rc_windows.syso main.rc
 
-arduino:
+arduino-run:
+	go run main.go -target=arduino arduino.wa
+
+arduino-build:
 	go run main.go build -target=arduino arduino.wa
 	wat2wasm a.out.wat -o a.out.wasm
+	xxd -i a.out.wasm > app.wasm.h
 
 clean:

arduino.wa

@@ -6,7 +6,7 @@ var LED = arduino.GetPinLED()
 
 fn init() {
 	arduino.PinMode(LED, 1)
-	arduino.Println("Wa is running 😎")
+	arduino.Println("Wa/Arduino is running 😎")
 }
 
 fn main() {

internal/app/apputil/wabt_wat2wasm.go

@@ -41,9 +41,25 @@ func RunWasm(cfg *config.Config, filename string) (stdoutStderr []byte, err erro
 	r := wazero.NewRuntime(ctx)
 	defer r.Close(ctx)
 
+	switch cfg.WaOS {
+	case config.WaOS_Arduino:
+		if _, err = waruntime.ArduinoInstantiate(ctx, r); err != nil {
+			return nil, err
+		}
+	case config.WaOS_Chrome:
+		if _, err = waruntime.ChromeInstantiate(ctx, r); err != nil {
+			return nil, err
+		}
+
+	case config.WaOS_Walang:
 		if _, err = waruntime.WalangInstantiate(ctx, r); err != nil {
 			return nil, err
 		}
+	case config.WaOS_Wasi:
+		if _, err = waruntime.WasiInstantiate(ctx, r); err != nil {
+			return nil, err
+		}
+	}
 
 	_, err = r.InstantiateModuleFromBinary(ctx, wasmBytes)
 	if err != nil {

internal/app/waruntime/arduino.go

@@ -4,12 +4,62 @@ package waruntime
 
 import (
 	"context"
+	"fmt"
+	"time"
 
 	"github.com/tetratelabs/wazero"
 	"github.com/tetratelabs/wazero/api"
 	"github.com/wa-lang/wa/internal/config"
 )
 
-func ArduinoInstantiate(ctx context.Context, rt wazero.Runtime) (api.Module, error) {
-	return rt.NewHostModuleBuilder(config.WaOS_Arduino).Instantiate(ctx, rt)
+func ArduinoInstantiate(ctx context.Context, rt wazero.Runtime) (api.Closer, error) {
+	startTime := time.Now()
+	return rt.NewHostModuleBuilder(config.WaOS_Arduino).
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context, m api.Module) int32 {
+			t := time.Now().Sub(startTime).Milliseconds()
+			fmt.Printf("arduino.millis(): %v\n", t)
+			return int32(t)
+		}).
+		WithParameterNames().
+		Export("millis").
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context, ms uint32) {
+			fmt.Printf("arduino.delay(%d)...\n", ms)
+			time.Sleep(time.Millisecond * time.Duration(ms))
+		}).
+		WithParameterNames("ms").
+		Export("delay").
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context, pin, mode int32) {
+			if mode == 0 {
+				fmt.Printf("arduino.pinMode(%d, %s)\n", pin, "LOW")
+			} else {
+				fmt.Printf("arduino.pinMode(%d, %s)\n", pin, "HIGH")
+			}
+		}).
+		WithParameterNames("pin", "mode").
+		Export("pinMode").
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context, pin, value int32) {
+			fmt.Printf("arduino.digitalWrite(%d, %d)\n", pin, value)
+		}).
+		WithParameterNames("pin", "value").
+		Export("digitalWrite").
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context) int32 {
+			const pin = 13
+			fmt.Printf("arduino.getPinLED(): %v\n", pin)
+			return pin
+		}).
+		WithParameterNames().
+		Export("getPinLED").
+		NewFunctionBuilder().
+		WithFunc(func(ctx context.Context, m api.Module, ptr, len uint32) {
+			bytes, _ := m.Memory().Read(ctx, ptr, len)
+			fmt.Printf("arduino.print(%q)\n", string(bytes))
+		}).
+		WithParameterNames("ptr", "len").
+		Export("print").
+		Instantiate(ctx, rt)
 }

internal/app/waruntime/chrome.go

@@ -10,6 +10,6 @@ import (
 	"github.com/wa-lang/wa/internal/config"
 )
 
-func ChromeInstantiate(ctx context.Context, rt wazero.Runtime) (api.Module, error) {
+func ChromeInstantiate(ctx context.Context, rt wazero.Runtime) (api.Closer, error) {
 	return rt.NewHostModuleBuilder(config.WaOS_Chrome).Instantiate(ctx, rt)
 }

internal/app/waruntime/walang.go

@@ -12,7 +12,7 @@ import (
 
 const envWalang = "wa_js_env"
 
-func WalangInstantiate(ctx context.Context, rt wazero.Runtime) (api.Module, error) {
+func WalangInstantiate(ctx context.Context, rt wazero.Runtime) (api.Closer, error) {
 	return rt.NewHostModuleBuilder(envWalang).
 		NewFunctionBuilder().
 		WithFunc(func(ctx context.Context, m api.Module, pos, len uint32) {

internal/app/waruntime/wasi.go

@@ -6,9 +6,10 @@ import (
 	"context"
 
 	"github.com/tetratelabs/wazero"
+	"github.com/tetratelabs/wazero/api"
 	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
 )
 
-func WasiInstantiate(ctx context.Context, rt wazero.Runtime) {
-	wasi_snapshot_preview1.MustInstantiate(ctx, rt)
+func WasiInstantiate(ctx context.Context, rt wazero.Runtime) (api.Closer, error) {
+	return wasi_snapshot_preview1.Instantiate(ctx, rt)
 }

internal/waroot/_waroot/src/runtime/runtime_arduino.wa

 # 版权 @2022 凹语言 作者。保留所有权利。
 
+import "syscall/arduino"
+
 var WAOS = "arduino"
 
 #wa:linkname $runtime.waPrintI32
@@ -9,4 +11,6 @@ fn waPrintI32(i: i32) {}
 fn waPrintRune(ch: i32) {}
 
 #wa:linkname $runtime.waPuts
-fn waPuts(ptr: i32, len: i32) {}
+fn waPuts(ptr: i32, len: i32) {
+	arduino.PrintRawString(ptr, len)
+}

internal/waroot/_waroot/src/syscall/arduino/arduino.wa

@@ -10,49 +10,27 @@ var (
 )
 
 #wa:import arduino millis
-#wa:linkname $waMillis
 fn Millis() => i32
 
 #wa:import arduino delay
-#wa:linkname $waDelay
 fn Delay(ms: i32)
 
 #wa:import arduino pinMode
-#wa:linkname $waPinMode
 fn PinMode(pin, mode: i32)
 
 #wa:import arduino digitalWrite
-#wa:linkname $waDigitalWrite
 fn DigitalWrite(pin, value: i32)
 
 #wa:import arduino getPinLED
-#wa:linkname $waGetPinLED
 fn GetPinLED() => i32
 
 #wa:import arduino print
-#wa:linkname $waPrint
-fn Print(s: string)
+fn PrintRawString(ptr: i32, len: i32)
 
-#wa:import arduino getGreeting
-#wa:linkname $waGetGreeting
-fn _getGreeting(buf: *byte, maxlen: i32)
-
-fn Println(s: string) {
-	Print(s)
-	Print("\n")
-}
-
-#wa:linkname $waPrintI32
-fn waPrintI32(i: i32) {
-	# TODO
+fn Print(s: string) {
+	print(s)
 }
 
-#wa:linkname $waPrintRune
-fn waPrintRune(ch: i32) {
-	# TODO
-}
-
-#wa:linkname $waPuts
-fn waPuts(ptr: i32, len: i32) {
-	# TODO
+fn Println(s: string) {
+	println(s)
 }