message: Some polish to ble_ess example
diff: @@ -32,6 +32,7 @@ fn set_ipc_slice<I: Into<i32>>(slice: &mut [u8], sensor_type: u32, sensor_data:
  fn main() {
  let mut console = Console::new();
  + write!(&mut console, "Starting BLE ESS\n").unwrap();
  let (mut ipc_client, mut updates) = match setup_ipc() {
  Ok((c, s)) => (c, s),
  @@ -40,34 +41,35 @@ fn main() {
  return;
  }
  };
  + write!(&mut console, "Found BLE IPC Service\n").unwrap();
  let mut humidity = HumiditySensor;
  let mut temperature = TemperatureSensor;
  let mut light = AmbientLightSensor;
  loop {
  - let humid = humidity.read();
  - let temp = temperature.read();
  - let lx = light.read();
  - write!(&mut console, "Humidity: {}\n", humid).unwrap();
  - write!(&mut console, "Temperature: {}\n", temp).unwrap();
  - write!(&mut console, "Light: {}\n", lx).unwrap();
  // Temperature
  + let temp = temperature.read();
  + write!(&mut console, "Temperature: {}\n", temp).unwrap();
  set_ipc_slice(&mut *updates, 0, temp);
  if let Err(_) = ipc_client.notify() {
  write!(&mut console, "Failed to send temperature\n").unwrap_or(());
  }
  - // Humidity
  + // Light
  + let lx = light.read();
  + write!(&mut console, "Light: {}\n", lx).unwrap();
  set_ipc_slice(&mut *updates, 1, lx);
  if let Err(_) = ipc_client.notify() {
  write!(&mut console, "Failed to send light\n").unwrap_or(());
  }
  // Humidity
  + let humid = humidity.read();
  + write!(&mut console, "Humidity: {}\n", humid).unwrap();
  set_ipc_slice(&mut *updates, 2, humid);
  if let Err(_) = ipc_client.notify() {
  - write!(&mut console, "Failed to send Humidity\n").unwrap_or(());
  + write!(&mut console, "Failed to send humidity\n").unwrap_or(());
  }
  tock::timer::delay_ms(5000);
  