function printCCompat(buf) {
  var objectName = 'an_image'
  if (typeof arguments[1] !== 'undefined') objectName = arguments[1]

  if (process.stdout.isTTY) log.info('Not TTY')
  process.stdout.write('const static unsigned char ' + objectName + ' PROGMEM = \n{\n  ')
  for (var i = 0; i < buf.length; i++) {
    process.stdout.write(buf[i])
    if ((i+1) > 0 && (i+1) % 8 === 0) process.stdout.write('\n  ')
  }
  process.stdout.write('\n}\n')
}