Heart Rate 9 Click example on SAM E51 Curiosity Nano Evaluation Kit

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Description:

This example demonstrates the reading of Heart Rate and displays it on a serial terminal on SAM E51 Curiosity Nano Evaluation Kit using Heart Rate 9 Click board.

Modules/Technology Used:

Peripheral Modules
- EIC
- SYSTICK
- GPIO
- SERCOM (USART)

Hardware Used:

Software/Tools Used:

This project has been verified to work with the following versions of software tools:

Refer Project Manifest present in harmony-manifest-success.yml under the project folder firmware/src/config/sam_e51_cnano

Refer the Release Notes to know the MPLAB X IDE and MCC Plugin version. Alternatively, Click Here.
Any Serial Terminal application like Tera Term terminal application.

Because Microchip regularly update tools, occasionally issue(s) could be discovered while using the newer versions of the tools. If the project doesn’t seem to work and version incompatibility is suspected, It is recommended to double-check and use the same versions that the project was tested with. To download original version of MPLAB Harmony v3 packages, refer to document How to Use the MPLAB Harmony v3 Project Manifest Feature

Setup:

Connect the SAM E51 Curiosity Nano Evaluation Kit to the Host PC as a USB Device through a Type-A male to micro-B USB cable connected to Micro-B USB (Debug USB) port

Programming hex file:

The pre-built hex file can be programmed by following the below steps.

Steps to program the hex file

Open MPLAB X IDE
Close all existing projects in IDE, if any project is opened.
Go to File -> Import -> Hex/ELF File
In the “Import Image File” window, Step 1 - Create Prebuilt Project, Click the “Browse” button to select the prebuilt hex file.
Select Device has “ATSAME51J20A”
Ensure the proper tool is selected under “Hardware Tool”
Click on Next button
In the “Import Image File” window, Step 2 - Select Project Name and Folder, select appropriate project name and folder
Click on Finish button
In MPLAB X IDE, click on “Make and Program Device” Button. The device gets programmed in sometime
Follow the steps in “Running the Demo” section below

Programming/Debugging Application Project:

Open the project (sam_e51_cnano/same51n_mikroe_click/heartrate9/firmware/sam_e51_cnano.X) in MPLAB X IDE
Ensure “SAM E51 Curiosity Nano” is selected as hardware tool to program/debug the application
Build the code and program the device by clicking on the “Make and Program Device” button in MPLAB X IDE tool bar
Follow the steps in “Running the Demo” section below

Running the Demo:

Open the Tera Term terminal application on your PC (from the Windows® Start menu by pressing the Start button)
Set the baud rate to 115200
Keep your finger on Pulse Detection Indicator as shown here.

Note: Cover the Heart Rate Sensor by placing your finger on Pulse Detection Indicator as shown below
Now, press the switch SW0 on the SAM E51 Curiosity Nano Evaluation Kit to print the Heart Rate.
For every switch press, the SAM E51 Curiosity Nano Evaluation Kit prints the Heart Rate.

Instructions to add Heart Rate functionality to your application:

You could use this demonstration as an example to add Heart Rate functionality to your MPLAB Harmony v3 based application. Follow the below steps.

If you haven’t downloaded the Heart Rate 9 demo yet Click Here to download, otherwise go to next step
Unzip the downloaded .zip file
From the unzipped folder heartrate9/firmware/src, copy the folder click_routines to the folder firmware/src under your MPLAB Harmony v3 application project
Open MPLAB X IDE
Open your application project
In the project explorer, Right click on folder Header Files
and add a sub folder click_routines by selecting “Add Existing Items from Folders…”

Click on “Add Folder…” button
Select the “click_routines” folder and select “Files of Types” as Header Files
Click on “Add” button to add the selected folder
The Heart Rate 9 click example header files gets added to your project

In the project explorer, Right click on folder Source Files
and add a sub folder click_routines by selecting “Add Existing Items from Folders…”

Click on “Add Folder…” button
Select the “click_routines” folder and select “Files of Types” as Source Files
Click on “Add” button to add the selected folder
The Heart Rate 9 click example source files gets added to your project

The Heart Rate 9 click example uses the USART and Timer peripherals. The configuration of these peripherals for your application depends on the 32-bit MCU and development board you are using.
- Configure USART: - Add the USART peripheral block to the MCC project graph
  - Configure USART Pins using MCC Pin configuration Window
    The USART configuration depends on - 32-bit MCU - 32-bit MCU development board - The socket on which you have mounted the Heart Rate 9 click board
    Example: The Heart Rate 9 click example on SAM E51 Curiosity Nano Evaluation Kit uses mikroBUS socket #1 on the Curiosity Nano Base for Click boards to mount the Heart Rate 9 click board. The USART lines from MCU coming to this socket are from the SERCOM4 peripheral on the MCU.
    MCC Project Graph - USART configuration
  MCC Pin Configurator - USART pin configuration
- Configure Heart Rate 9 Click Reset Pin: - Configure Heart Rate 9 Click Reset Pin using MCC Pin configuration Window
  The Reset Pin configuration depends on - The socket on which you have mounted the Heart Rate 9 click board
  Example: The Heart Rate 9 click example on SAM E51 Curiosity Nano Evaluation Kit uses mikroBUS socket #1 on the Curiosity Nano Base for Click boards to mount the Heart Rate 9 click board. The Reset Pin line from the Heart Rate 9 Click coming to this socket is PA07 on the MCU.
  MCC Pin Configurator - Reset pin configuration
- Configure Timer:
  - Configure Timer peripheral block in the MCC project graph
    The Timer configuration depends on - 32-bit MCU
    Example: The Heart Rate 9 click example on SAM E51 Curiosity Nano Evaluation Kit uses SysTick timer module on the MCU to implement the time requirement of Heart Rate 9 click routines.
    MCC Project Graph - SysTick configuration
- Map Generic Macros:
  - After generating the project, following the above configuration, map the generic macros used in the click routines to the Harmony PLIB APIs of the 32-bit MCU your project is running on
  - The generic macros should be mapped in the header file click_interface.h
    
    Example: The Heart Rate 9 click routines for the example on SAM E51 Curiosity Nano Evaluation Kit uses the following Harmony PLIB APIs
  Note: Define the value of CLICK_HEARTRATE9_USART_READ_BUFFER_SIZE same as USART_READ_BUFFER_SIZE defined in the respective USART PLIB ‘.c’ file
The click_routines folder contain an example C source file heartrate9_example.c. You could use heartrate9_example.c as a reference to add Heart Rate 9 functionality to your application.

Comments:

Reference Training Module:
This application demo builds and works out of box by following the instructions above in “Running the Demo” section. If you need to enhance/customize this application demo, you need to use the MPLAB Harmony v3 Software framework. Refer links below to setup and build your applications using MPLAB Harmony.
- How to Setup MPLAB Harmony v3 Software Development Framework
- How to Build an Application by Adding a New PLIB, Driver, or Middleware to an Existing MPLAB Harmony v3 Project
- MPLAB Harmony v3 is also configurable through MPLAB Code Configurator (MCC). Refer to the below links for specific instructions to use MPLAB Harmony v3 with MCC.

Revision:

v1.6.0 - Regenerated and tested the application
v1.5.0 - Removed MHC support, regenerated and tested application.
v1.4.0 - Added MCC support, regenerated and tested application.
v1.3.0 - Released demo application