Dynamic data handling with FreeRTOS-Plus TCP

Kernel
#1

danihartech wrote on Monday, May 14, 2018:

Hi Guys,

I’ve just joined on here. I’m working on a project using FreeRTOS and AWS on PIC32. Part of the project needs a web server for configuring the device. I’ve implemented the sample project with some help from https://github.com/jjr-simiatec/FreeRTOS-TCP-for-PIC32 and have it running. I have a couple of questions which I wondered if someone could shed light on:

  1. How would I implement a dynamc page, i.e be able to access data on the pic from web page to PIC and PIC to web page? Microchip have an example using CGI files. Can this be used with FreeRTOS-Plus TCP? If so how? Where is this handled?

  2. The example on github uses a precompiled BLOB containing a FAT file system prepared using Linux (diskImage.a). How can this be modified so that I can change the content? Preferably on a non-linux system.

  3. Does anyone have a driver for PIC32 SD card working with FreeRTOS-Plus FAT? Obviouly I can write a driver to access the SD media, but just wondered if there is one out there already.

Any help woud be greatly appreciated.

Thanks

#2

heinbali01 wrote on Monday, May 14, 2018:

  1. How would I implement a dynamc page, i.e be able to access data on the pic from web page to
    PIC and PIC to web page? Microchip have an example using CGI files. Can this be used with
    FreeRTOS-Plus TCP? If so how? Where is this handled?

Here are some posts about what you are asking:

https://sourceforge.net/p/freertos/discussion/382005/thread/72bd7781
https://sourceforge.net/p/freertos/discussion/382005/thread/764119d3
https://sourceforge.net/p/freertos/discussion/382005/thread/acf254c8

  1. The example on github uses a precompiled BLOB containing a FAT file system prepared using
    Linux (diskImage.a). How can this be modified so that I can change the content? Preferably
    on a non-linux system.

Can the blob be loaded in RAM? Is it a binary image of a FAT drive / parition ?

  1. Does anyone have a driver for PIC32 SD card working with FreeRTOS-Plus FAT? Obviously I can
    write a driver to access the SD media, but just wondered if there is one out there already.

I’m sure that there is an SD-card driver around, but I don’t have one.
If you can find a driver, I can help you to adapt it for FreeRTOS+FAT.

The driver needs a few functions, like:

    bool card_is_inserted()
    bool initialise()
    int32_t read_sectors()
    int32_t write_sectors()

Regards, Hein

#3

danihartech wrote on Monday, May 14, 2018:

Thats fantastic. Thank you very much for your detailed response.

Much appreciated.