Mouser PSoC6-WiFi-BT L5 : GoBLE – BLE Remote Control for the Game

Designing low-power, cloud-connected IoT devices with PSoC® 6 MCU’s and WICED® Wi-Fi/Bluetooth

Summary

Although I a like the video game, it is for sure missing something.  That something is IoT.  The first IoT thing that we will do to the game is to add a BLE remote control.  I wanted a pre-done remote control that could be downloaded from the App store.  After looking around a little bit I found GoBle.  I published a detailed article about GoBle here, but I’ll explain enough to make it work with the game.

Here is a screen shot of what the remote control looks like.  You can see that on the left there is a joystick, and on the right there are some buttons.  My son tells me that this is a classic layout for a remote control.

This remote control works as a “Central” meaning it knows how to connect to Peripherals.  For this lesson we will turn on the CYW4343W and make it be a Bluetooth Peripheral.

To implement this lesson I will follow these steps:

  1. Create a folder called “L5GoBle”
  2. Create a makefile called L5GoBle.mk
  3. Setup a GATT database by creating GoBle_db.h and GoBle_db.c
  4. Setup wiced_bt_cfg.c
  5. Create GoBleThread.c
  6. Create GoBle.c to startup the GoBleThread
  7. Build, Program and Test

Create a directory called “L5GoBle”

Create a makefile called L5GoBle.mk

Setup a GATT database by creating GoBle_db.h and GoBle_db.c

Create a file called “GoBle_db.h”

Create a file called “GoBle.c”

Setup wiced_bt_cfg.c

The WICED Bluetooth Configuration file is called “wiced_bt_config.c”.  The only change I made from the default is the timeout value of the advertising.  You can copy this directly into your file.

Create GoBleThread.c

In  order for the GoBleThread to work you need:

  1. The includes for the GATT Database and the WICED bluetooth stack.
  2. External References to the GATT Database.
  3. A few function prototypes.
  4. A function called “GoBleThread_start” to startup the Bluetooth stack and get things going. This includes providing Bluetooth management and GATT event handler functions.

Create a function to setup the advertising data.  The GoBle iOS App looks for Peripherals that are advertising the UUID of the GoBLE Service.

The Bluetooth Management Event Handler needs to take actions when the stack turns on, or one of the pairing events occur.

The GATT Event Handler is called

  1. When a connection is made or terminated
  2. When the GoBle app writes to your GATT database.  When that happens we will just printout the value that was written

Create GoBleThread.h

Create GoBle.c to startup the GoBleThread

Build, Program and Test