PSoC™ 6S2 GPIO-PDL LED Blink Lab

GPIO-PDL LED Blink Lab

Lab Objective:

The purpose of this lab is to offer students a hands-on understanding of GPIO (General Purpose Input Output) implementation using the PSoC 6 microcontroller from Cypress (CY8CKIT-062S2-43012 Infineon Board). Upon completing this lab, students will be proficient in initializing GPIOs, controlling GPIO states, and developing basic delay functions.

Lab Description:

This lab instructs students to program a PSoC 6 microcontroller to manage an LED through a GPIO, employing the GPIO-PDL (Peripheral Driver Library). The task will demonstrate the core functionality of GPIO output.

The code will:

• Initialize the device and necessary board peripherals.

• Set up a GPIO pin (connected to the LED) as an output utilizing GPIO-PDL functions.

• Establish an endless loop that will:

  • Drive the pin low

  • Wait 250 ms

  • Drive the pin high

  • Wait 250 ms This sequence will lead to the LED blinking on and off every half-second (250ms on, 250ms off), showcasing an elementary control of GPIO output through GPIO-PDL.

    • Note: See the PDL API documentation for the GPIO functions to drive the pin high and low.

    • Note: Use the Cy_SysLib_Delay function for the delay.

🔥 Requirements

🚩 Let start

Create Application

• 👉 Open Eclipse IDE ModusToolbox

• 👉 Select Board

• 👉 Select Application

  

Device Configuration for initializing LED and UART pin

Open Device Configuration to initialize LED Pin

• Find Pin and search for led then select the P1[5]

  
• Set the pins Drive Mode parameter to Strong Drive Input buffer off.

  

Initialize LED Pin

Coding

• Coding: Open the main.c file and add the following code to the main() function.

for (;;)
  {
        /* Drive the USER LED pin high (LED off) */
      	Cy_GPIO_Set(CYBSP_USER_LED_PORT, CYBSP_USER_LED_NUM);
      
        /* Wait 250 ms */
    	Cy_SysLib_Delay(250U);
    
        /* Drive the USER LED pin low (LED on) */
    	Cy_GPIO_Clr(CYBSP_USER_LED_PORT, CYBSP_USER_LED_NUM);
    
        /* Wait 250 ms */
	Cy_SysLib_Delay(250U);
  }

• for (;;) This line starts an infinite loop. The code contained within the curly braces {} will repeat indefinitely.

• Cy_GPIO_Set(CYBSP_USER_LED_PORT, CYBSP_USER_LED_NUM);sets the GPIO pin specified by CYBSP_USER_LED_PORT and CYBSP_USER_LED_NUM to a high state, turning off the LED.

• Cy_SysLib_Delay(250U); introduces a delay of 250 milliseconds, causing a pause in the execution of the program. This delay is implemented using a system library function.

• Cy_GPIO_Clr(CYBSP_USER_LED_PORT, CYBSP_USER_LED_NUM); clears (sets to a low state) the GPIO pin specified by CYBSP_USER_LED_PORT and CYBSP_USER_LED_NUM, turning On the LED.

• Another Cy_SysLib_Delay(250U); introduces another delay of 250 milliseconds.

This sequence of code turns on the LED, waits for 250 milliseconds, turns off the LED, and then waits for another 250 milliseconds. The cycle then repeats, creating a blinking effect for the LED.

Build the Application

• 👉 Build the Application

Launching the Application

• 👉 Launching the Application

  • Before launching the program to the board, make sure that you have already connected the board to the computer through a USB cable.
  • Launching Program
• 👉 Check the Result

🎉 Congratulations! You can now complete Lab102

Supported toolchains (make variable 'TOOLCHAIN')

• GNU Arm® embedded compiler v10.3.1 (GCC_ARM) - Default value of TOOLCHAIN

• Arm® compiler v6.16 (ARM)

• IAR C/C++ compiler v9.30.1 (IAR)

Supported kits (make variable 'TARGET')

• PSoC™ 62S2 Wi-Fi Bluetooth® pioneer kit (CY8CKIT-062S2-43012)

• PSoC™ 62S1 Wi-Fi Bluetooth® pioneer kit (CYW9P62S1-43438EVB-01)

• PSoC™ 62S1 Wi-Fi Bluetooth® pioneer kit (CYW9P62S1-43012EVB-01)

• PSoC™ 62S3 Wi-Fi Bluetooth® prototyping kit (CY8CPROTO-062S3-4343W)

Related resources

Other resources

Infineon provides a wealth of data at www.infineon.com to help you select the right device, and quickly and effectively integrate it into your design.

Document history

Document title: BILL_MTB-102 – GPIO-PDL LED Blink Template

Authors:

• Assoc. Prof. Wiroon Sriborrirux

• Mr. Sriengchhun Chheang

• Mr. Sabol Socare

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