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ADC example (Illumination sensor)

(C) COPYRIGHT 2015 WIZnet Co.,Ltd.

  • file : Illumination_regled/readme.md
  • author : IOP Team
  • version : V1.0.0
  • date : 1-May-2015
  • brief : Description of the Illumination sensor & REG led toggle 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​

This example shows how to use ADC of W7500. In this example, ADC input is connected with illumination sensor. And control RGB led by illumination sensor value.

In this example:

  • Set the Alternate function of PAD for this example.
  • Sensing analog value of Illumination sensor.
  • If dark, ON the led, if not, OFF the led with GPIO control.

Directory contents​

  • ADC/Illumination_regled/main.c (Main program)
  • ADC/Illumination_regled/W7500x_it.c (Interrupt Handlers)
  • ADC/Illumination_regled/W7500x_it.h (Interrupt Handlers Header file)
  • ADC/Illumination_regled/W7500x_conf.h (Library Configuration file)
  • ADC/Illumination_regled/MDK/W7500x_Illumination_regled.uvproj (MDK Project file)
  • ADC/Illumination_regled/GCC/Makefile (GCC Make 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 ADC input connected to PC_15(A0) pin.
    • 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 LEDs to be changed from PAD_AF0 to PAD_AF1.

  • Hardware Connection

    5V - 10K ohm register - PC_15(A0) - Illumination sensor - GND

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.

Flow Chart​

  • Power on ADC
  • Select ADC channel
  • ADC start
  • Wait until EOC (end of conversion)
  • Read ADC value

© COPYRIGHT 2015 WIZnet Co.,Ltd.