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Psoc 4: Wireless Programming

Made by electrouser805 / Communication / Productivity

About the project

Instead of programming CY8CKIT-049-42xx PSoC 4 through USB, program it wirelessly via Bluetooth-UART link with HC-05 module.

Project info

Difficulty: Easy

Platforms: Cypress

Estimated time: 1 hour

License: MIT license (MIT)

Items used in this project

Hardware components

	Momentary Pushbutton Switch - 12mm Square	x 1
	Ultrasonic Sensor Hc-sr04	x 1
	Jumper Wire Kit - 140pcs	x 1

Software apps and online services

	Arduino IDE
	Cypress PSoC Creator

Hand tools and fabrication machines

Soldering iron (generic)

x 1

Story

Intro

The CY8CKIT-049 is a 4$ prototyping kit with PSoC chip from Cypress Semiconductor based on ARM M0 MCU. It has following features :

CY8CKIT-049

The first part of the kit is an USB-UART module which serves as a programmer. The Second part has CY8C4248AXI-083 PSoC chip (ARM M0 MCU), which comes with UART Bootloader allowing it to be programmed over UART protocol.

Problem with Prototyping

The problems I faces while programming this kit in some of my old projects are :

Dodgy connection on USB Port during programming
Limited power for External Circuits
Heavy project hardware hanging from PC USB
Plug and unplug again and again to reprogram

I was annoyed and stopped using these kits for a while.

Solution to the Problem

The Solution is very simple:

Add a reset button for power cycle before bootlodable programming
Replace the USB-UART module with HC-05 Bluetooth Module

Step 1: Snap your CY8CKIT-049 and add a Reset Button

Snap the kit and solder necessary male/female pin header -

Snapped, header soldered and Reset Button added

Solder the reset button

Push switch between Reset and Gnd pin

Step 2: Use the USB-UART to Change HC-05's Baud to 115200

Connect the HC-05 to USB-UART module of the kit according to following diagram:-

Changing Baud of HC-05

Connect to PC with a UART module in AT command mode while holdiing the 'key' button on HC-05 module
A new port should appear as follows

Open Arduino IDE >> tools >> Port and select the new USB serial port. Next Open serial monitor and select 38400 ( which is AT command mode baud )

Now apply following AT commands in the Arduino serial monitor one line at a time and press send

AT  
AT+UART = 115200,0,0
AT+RESET

This will change the baud rate of HC-05 to 115200, which is required for programming the main part of the PSoC kit .

Step 3: Pair HC-05 to PC and Find the Port

Go to Windows Bluetooth option and pair HC-05, new virtual com port will be installed after successful pairing.

Adding HC-05 to Windows PC

We will use the green one

Step 4: Connect HC-05 to PSoC

Now connect the HC-05 to the main part of the CY8CKIT-049 which has the mcu. See Schematic below for details.

Connection between PSoC4 and HC-05

Step 5: Program over Bluetooth with PSoC Creator

Open "PSoC Creator (4.2)" and compile the example "Bootloadable Blink LED" program.
Press & hold the Bootloadable button, press the reset button, release both button to enter programming mode.
Then go to Tools >> Bootloadable Host >> Select the Bluetooth Serial Port with Baud 115200.
Next click the upload to program wirelessly.

Uploading over Bluetooth

Additional Resources

USB-Serial Driver

PSoC Creator

Schematics, diagrams and documents

Sch

Code

Bootloadable Blinking LED from Example

/******************************************************************************
* Project Name		: Bootloadable Blinking LED
* File Name			: main.c
* Version 			: 1.0
* Device Used		: CY8C4245AXI-483
* Software Used		: PSoC Creator 3.1
* Compiler    		: ARMGCC 4.8.4, ARM RVDS Generic, ARM MDK Generic
* Related Hardware	: CY8CKIT-049-42xx PSoC 4 Prototyping Kit 
*
********************************************************************************
* Copyright (2015), Cypress Semiconductor Corporation. All Rights Reserved.
********************************************************************************
* This software is owned by Cypress Semiconductor Corporation (Cypress)
* and is protected by and subject to worldwide patent protection (United
* States and foreign), United States copyright laws and international treaty
* provisions. Cypress hereby grants to licensee a personal, non-exclusive,
* non-transferable license to copy, use, modify, create derivative works of,
* and compile the Cypress Source Code and derivative works for the sole
* purpose of creating custom software in support of licensee product to be
* used only in conjunction with a Cypress integrated circuit as specified in
* the applicable agreement. Any reproduction, modification, translation,
* compilation, or representation of this software except as specified above 
* is prohibited without the express written permission of Cypress.
*
* Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH 
* REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* Cypress reserves the right to make changes without further notice to the 
* materials described herein. Cypress does not assume any liability arising out 
* of the application or use of any product or circuit described herein. Cypress 
* does not authorize its products for use as critical components in life-support 
* systems where a malfunction or failure may reasonably be expected to result in 
* significant injury to the user. The inclusion of Cypress' product in a life-
* support systems application implies that the manufacturer assumes all risk of 
* such use and in doing so indemnifies Cypress against all charges. 
*
* Use of this Software may be limited by and subject to the applicable Cypress
* software license agreement. 
*******************************************************************************/

/******************************************************************************
*                           THEORY OF OPERATION
* This is a blinking LED project. A PWM component drives the pin to blink the 
* LED at regular intervals. This project contains a bootloadable component so 
* that it can be bootloaded into PSoC 4 which has a bootloader already programmed 
* into it.
* Default UART Port Configuration for bootloading the PSoC 4 in CY8CKIT-049-42xx
* Baud Rate : 115200 bps
* Data Bits : 8
* Stop Bits : 1
* Parity    : None
******************************************************************************/
#include <project.h>
int x=10;
int main()
{
	
	for(;;)
    {
     P1_6_Write(1);
    CyDelay(x); P1_6_Write(0);
    CyDelay(x);
    x=x+5; 
    if(x>100) {x=10;}
    
        }
    }

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