compiler: extend flash command to support different output file types…

…, based on contents of flash key in target file

Signed-off-by: Ron Evans <ron@hybridgroup.com>

main.go

@@ -318,14 +318,29 @@ func Flash(pkgName, target, port string, config *BuildConfig) error {
  return err
  }
 
- return Compile(pkgName, ".hex", spec, config, func(tmppath string) error {
+ // determine the type of file to compile
+ var fileExt string
+
+ switch {
+ case strings.Contains(spec.Flasher, "{hex}"):
+ fileExt = ".hex"
+ case strings.Contains(spec.Flasher, "{elf}"):
+ fileExt = ".elf"
+ case strings.Contains(spec.Flasher, "{bin}"):
+ fileExt = ".bin"
+ default:
+ return errors.New("invalid target file - did you forget the {hex} token in the 'flash' section?")
+ }
+
+ return Compile(pkgName, fileExt, spec, config, func(tmppath string) error {
  if spec.Flasher == "" {
  return errors.New("no flash command specified - did you miss a -target flag?")
  }
 
  // Create the command.
  flashCmd := spec.Flasher
- flashCmd = strings.Replace(flashCmd, "{hex}", tmppath, -1)
+ fileToken := "{" + fileExt[1:] + "}"
+ flashCmd = strings.Replace(flashCmd, fileToken, tmppath, -1)
  flashCmd = strings.Replace(flashCmd, "{port}", port, -1)
 
  // Execute the command.