Lab 4: Add HTTP Web Server to Visualize Data

 Objective

In Lab 4, you will enhance the existing application and build a Web Server using Wi-Fi® connectivity to visualize the temperature data.

Overview

The whole application is divided into four tasks.

  • Sensor task
  • SD Card task
  • USB task
  • Wi-Fi task

The tasks will run as separate RTOS threads.

The Sensor task will use:

  • A button to switch the application on or off
  • Timer System Service using Core Timer to periodically sample temperature sensor data
  • Asynchronous I2C Driver using I2C1 Peripheral Library to read the temperature sensor

The SD Card task will use:

  • Asynchronous SDSPI Driver using SPI2 Peripheral Library to write temperature log onto SD card
  • File System Service interfaced with SDSPI Driver to perform operations on the SD card
  • RTC Peripheral Library to capture the current log time

The USB task will use:

  • Debug System Service and Console System Service using CDC Peripheral Library to print data on a serial port terminal

The Wi-Fi task will use:

  • PIC32MZW1 Wi-Fi Driver and WLAN Library
  • Wireless System Services components
    • Wi-Fi Service to configure the device in SoftAP mode
    • Wi-Fi Provisioning Service
  • TCP IP Stack
  • HTTPNET Server component to enable the Web Server functionality

Procedure

Lab 4 Index

Part 1 - Configure FreeRTOS, I2C Driver, SDSPI Driver, File System, Harmony Core

Part 2 - Add Application Code & Build the Application

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