extra: add post_build tool and ancillary scripts

Author: facchinm

extra/install_pyocd.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+python3 -m pip install pyocd
+# add install dir to PATH
+# echo /Users/$USER/Library/Python/3.9/bin > /etc/paths.d/pyocd
+pyocd pack update
+pyocd pack install R7FA8D1AH
+pyocd pack install mcxn947

extra/post_build_tool/build.sh

@@ -0,0 +1,20 @@
+VERSION=$1
+
+mkdir -p distrib/linux_amd64
+GOOS=linux GOARCH=amd64 go build && mv zephyr-post-build-tool distrib/linux_amd64/post_build
+
+mkdir -p distrib/linux_arm64
+GOOS=linux GOARCH=arm64 go build && mv zephyr-post-build-tool distrib/linux_arm64/post_build
+
+mkdir -p distrib/macos_amd64
+GOOS=darwin GOARCH=amd64 go build && mv zephyr-post-build-tool distrib/macos_amd64/post_build
+
+mkdir -p distrib/windows_386
+GOOS=windows GOARCH=386 go build && mv zephyr-post-build-tool* distrib/windows_386/post_build.exe
+
+cd distrib
+
+tar -czf zephyr-post-build-tool-${VERSION}-linux_amd64.tar.gz linux_amd64
+tar -czf zephyr-post-build-tool-${VERSION}-linux_arm64.tar.gz linux_arm64
+tar -czf zephyr-post-build-tool-${VERSION}-macos_amd64.tar.gz macos_amd64
+zip -r zephyr-post-build-tool-${VERSION}-windows_386.zip windows_386

extra/post_build_tool/go.mod

@@ -0,0 +1,3 @@
+module github.com/arduino/zephyr-post-build-tool
+
+go 1.22.5

extra/post_build_tool/main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Please provide a filename")
+		return
+	}
+
+	filename := os.Args[1]
+	debug := 0
+
+	if len(os.Args) == 3 {
+		if os.Args[2] == "debug" {
+			debug = 1
+		}
+	}
+
+	// Read the file content
+	content, err := os.ReadFile(filename)
+	if err != nil {
+		fmt.Printf("Error reading file: %v\n", err)
+		return
+	}
+
+	// Get the length of the file content
+	length := len(content)
+
+	// Create a new filename for the copy
+	newFilename := filename + ".dfu"
+
+	// Create the new content with the length in front
+	len_str := fmt.Sprintf("%d", length)
+	newContent := append([]byte(len_str), 0, byte(debug))
+	newContent = append(newContent, content...)
+
+	// Write the new content to the new file
+	err = os.WriteFile(newFilename, []byte(newContent), 0644)
+	if err != nil {
+		fmt.Printf("Error writing to file: %v\n", err)
+		return
+	}
+	// Copy in .bin
+	err = os.WriteFile(newFilename+".bin", []byte(newContent), 0644)
+	if err != nil {
+		fmt.Printf("Error writing to file: %v\n", err)
+		return
+	}
+
+	fmt.Printf("File copied and saved as %s\n", newFilename)
+}