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GPIO Blink LED example


(C) COPYRIGHT 2015 WIZnet

  • file : GPIO/Blink_LED/readme.md
  • author : IOP Team
  • version : V1.0.0
  • date : 1-May-2015
  • brief : Description of the GPIO Blink_LED example.

THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, WIZNET SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.


Example Description#

GPIO ports are connected on APB2 bus, using UB_MASKED and LB_MASKED registers 2 cycles are required to set a pin and another cycle to reset it. So GPIO pins can toggle at AHB clock divided by 4.

This example describes how to use UB_MASKED and LB_MASKED (Port Bit GPIO_SetBits/GPIO_ResetBits Register)

PC_05, PC_08, PC_09(configured in output pushpull mode) toggles in a forever loop:

  • Set Pin_5 and Pin_8 and Pin_9 by setting corresponding bits in GPIO_SetBits register.
  • Reset Pin_5 and Pin_8 and Pin_9 by setting corresponding bits in GPIO_ResetBits register.

Directory contents#

  • GPIO/LED_Blink/main.c (Main program)
  • GPIO/LED_Blink/MDK/W7500x_GPIO_Blink_LED.uvproj (Project file)

Hardware and Software environment#

  • This example has been tested with WIZnet WIZwiki W7500 platform.

  • To select the WIZnet WIZwiki platform used to run the example.

  • WIZwiki W7500 Set-up

    • Use LED(R) connected to PC_08 pin
    • Use LED(G) connected to PC_09 pin
    • Use LED(B) connected to PC_05 pin
    • In order to use the LED to be changed from PAD_AF0 to PAD_AF1.

How to use it ?#

In order to make the program work, you must do the following :

  • Open your preferred toolchain.
  • Rebuild all files and load your image into target memory.
  • Run the example.
  • WIZwiki W7500 where the Flash memory density ranges 128Kbytes.
  • If you have any questions, please use the forum site.

ยฉ COPYRIGHT 2015 WIZnet Co.,Ltd.