PIC32BZ6 Bluetooth LE DC MOTOR CONTROL

"IoT Made Easy!"

Devices: | PIC32CX2051BZ62132 | PIC32WM-BZ6204UE | PIC32-BZ6 |
Features: | BLE | Motor Control |

⚠ Disclaimer

THE SOFTWARE ARE PROVIDED "AS IS" AND GIVE A PATH FOR SELF-SUPPORT AND SELF-MAINTENANCE. This repository contains example code intended to help accelerate client product development.

For additional Microchip repos, see: https://github.com/Microchip-MPLAB-Harmony

Checkout the Technical support portal to access our knowledge base, community forums or submit support ticket requests.

Contents

1. Introduction
2. Bill of materials
3. Hardware Setup
4. Software Setup
5. Harmony MCC Configuration
6. Board Programming

1. Introduction

This application allows users to control a Brushed DC Motor over Bluetooth® Low Energy (BLE) using the PIC32-BZ6 Curiosity Board. The motor’s on/off state and speed can be controlled through a mobile app, while the velocity is continuously reported back to the app.

2. Bill of materials

TOOLS	QUANTITY
PIC32CX-BZ2 and WBZ451 Curiosity Development Board	1
Encoder Metal Gearmotor 24V DC High Speed 600RPM	1
DROK DC Motor Driver, L298 Dual H Bridge Motor Speed Controller	1

3. Hardware Setup

PIC32-BZ6 Pin / Connector	Signal / Label	Connected To	Description
MikroBus 2	+5V	Motor Control Board Header +5V	Power for digital side of Motor Control Board
MikroBus 1	MISO	Motor Hall Sensor B (White)	QEI Signal B
MikroBus 1	MOSI	Motor Hall Sensor A (Yellow)	QEI Signal A
MikroBus 1	+5V	Motor Hall Sensor +5V (Blue)	Power for Motor position sensing
MikroBus 1	GND	Motor Hall Sensor GND (Green)	Ground
J701	PA15	Motor Control Board Header ENA1	PWM signal from SoC
J701	PB12	Motor Control Board Header IN2	Direction Control 1 from SoC
J701	PD0	Motor Control Board Header IN1	Direction Control 2 from SoC
J701	GND	Motor Control Board Header GND	Ground
Motor Power Connector Plus (Black)	+	Motor Control Board OUT 1 (bottom terminal)	Motor Positive line
Motor Power Connector Negative (Red)	-	Motor Control Board OUT 1 (top terminal)	Motor Negative line

4. Software Setup

• MPLAB X IDE

  • Version: 6.25
  • XC32 Compiler v4.35
  • MPLAB® Code Configurator v5.5.0
  • PIC32CX-BZ_DFP v1.3.38
  • MCC Harmony
    • csp version: v3.22.7
    • core version: v3.15.5
    • FreeRTOS-Kernel version: v11.1.0
    • CMSIS_5 version: v5.8.0
    • wireless_ble version: v5.4.0
    • wireless_pic32cxbz_wbz version: v1.6.0

• Any Serial Terminal application like TERA TERM terminal application

• MPLAB X IPE v6.25

5. Harmony MCC Configuration

Getting started with DC Motor control application in PIC32CX-BZ6 Curiosity board

Tip	New users of MPLAB Code Configurator are recommended to go through the overview

Step 1 - Connect the PIC32CX-BZ6 CURIOSITY BOARD with H-Bridge and Motor as explained in Hardware Setup.

Step 2 - The "MCC - Harmony Project Graph" below depicts the harmony components utilized in this project.

• From Device Resources, go to Libraries->Harmony->Wireless->Drivers->BLE->Services and add Customized Service. Click "Yes" on all the Pop-ups to add the link the dependencies.

• Ensure the configuration of Customized Service is as below.

• Ensure the configuration of BLE Stack is as below.

• Ensure the configuration of FreeRTOS is as below. Total heap size should be 61440.

• From Device Resources, go to Libraries->Harmony->System Services and add CONSOLE. Ensure the below configuration.

• Right Click on SYS_CONSOLE of CONSOLE and add SERCOM0 as below. Ensure the configurations.

• In Device resources, go to Harmony->Peripherals->EIC and select EIC. Ensure the configurations.

• In Device resources, go to Harmony->Peripherals->QEI and select QEI. Ensure the configurations.

• In Device resources, go to Harmony->Peripherals->TCC and select TCC1. Ensure the configurations.

Step 4 - Generate the code.

Step 5 - Once generation is complete, the merge window will appear. Merge all the changes shown.

Step 6 - Copy the mentioned files from this repository by navigating to the location mentioned below and replace the generated files.

Note	This application repository should be cloned/downloaded to perform the following steps.
Path	The application folder can be found in the following link

• Copy the following files from the cloned repo(...\firmware\src).

  • "app.c" and "app.h"

• In "app_user_edits.c", make sure the below code line is commented

  • "#error User action required - manually edit files as described here".

• Replace these entire files in your project folder location(...\firmware\src\app_ble).

Step 7 - Clean and build the project. To run the project, select "Make and program device" button.

6. Board Programming

Programming hex file:

Program the precompiled hex file using MPLAB X IPE

• The Precompiled hex file is given in the hex folder. Follow the steps provided in the link to program the precompiled hex file using MPLABX IPE to program the pre-compiled hex image.

Build and program the application using MPLAB X IDE

The application folder can be found by navigating to the following path:

• "firmware\PIC32CXBZ6_BLE_DC_Motor_Control.X"

Follow the steps provided in the link to Build and program the application.