Lab 4: Add HTTP Web Server to Visualize Data

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Step 8: Add code to WIFI application task

The application is already developed and is available in the following files.

  • app_sensor.c, app_sensor.h
  • app_usb.c, app_usb.h
  • app_sdcard.c, app_sdcard.h
  • app_wifi.c, app_wifi.h
  • custom_http_net_app.c

They are available under <your unzipped folder path>\getting_started_pic32_wfi32e\Lab4\dev_files.

The application file contains the application logic. It also contains placeholders that you will populate with the necessary code.

1

Go to the <your unzipped folder path>\getting_started_pic32_wfi32e\Lab4\dev_files folder and copy the pre-developed files:

  • app_sensor.c
  • app_sensor.h
  • app_usb.c
  • app_usb.h
  • app_sdcard.c
  • app_sdcard.h
  • app_wifi.c
  • app_wifi.h
  • custom_http_net_app.c

Paste and replace (overwrite) the files of your project at <your harmony 3 project folder path>\PIC32_WFI32E\firmware\src with the copied files.

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Tip: Search for the string "Step #" in target file to locate the position where you are supposed to write the code.

2

Open http_net_print.h.

Add #include "definitions.h" below the following code:

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3

Open app_wifi.c and follow the steps below.

Search for Step #1.

  • Use the function SYS_STATUS TCPIP_STACK_Status( SYS_MODULE_OBJ object ) to get the current status of the TCP IP Stack.
    • Pass in argument the tcpip module object sysObj.tcpip.
  • When the TCP IP Stack status is equal to SYS_STATUS_READY:
    • Initialize the HTTPNET Server with a call to HTTP_APP_Initialize().
    • Move the application state machine to APP_WIFI_STATE_IDLE.
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