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RTOS/TM4C1294NCPDT: HTTP API handler over Ethernet

Yogesh Apotikar
Prodigy 20 points
Part Number: TM4C1294NCPDT


Tool/software: TI-RTOS

Hello,

I am developing an application using TM4C1294NCPDT and TI-RTOS, where the application requires to connect to the internet over ethernet as well as receive HTTP commands. This command will be used for configuring device features ( like enable the feature, disable the feature, GET settings, SET settings, etc).

As per my knowledge, the HTTP API parsing can be done in two ways,

1. Hosting a web server on a device itself and present a web-based user interface, so the user can configure device settings, OR

2. Host a web server remotely  (like a cloud or some other  Computer) and create an HTTP client on the controller device so HTTP APIs can be used and parsed to get configuration settings.

for the second option, a dedicated Server needs to maintain on remote system or cloud, which I don't want to use.

I was looking more into the first option, that is maintaining a lightweight web server on the device itself.

My application requires to store these configuration setting into non-volatile memory (onboard Flash), Thus there will be a memory crunch.

please guide me here for the suitable option or options available.

  • 0
    TI__Guru*** 135355 points

    Hello Yogesh,

    I am going to pass this question to our Ethernet expert but he may not be able to reply until Monday.

  • 0
    TI__Guru**** 191906 points

    Hi,

      If you want to host a webserver on the device then you can reference this link for a HTTP server example below. I hope this example will help you start.

      To store data in a non-volatile memory you can use the on-chip EEprom. You can find the below snippet of code in the TivaWare Peripheral Driver library user's guide. 

    uint32_t ui32EEPROMInit;
uint32_t pui32Data[2];
uint32_t pui32Read[2];
//
// Enable the EEPROM module.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_EEPROM0);
//
// Wait for the EEPROM module to be ready.
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_EEPROM0))
{
}
//
// Wait for the EEPROM Initialization to complete
//
ui32EEPROMInit = EEPROMInit();
//
// Check if the EEPROM Initialization returned an error
// and inform the application
//
if(ui32EEPROMInit != EEPROM_INIT_OK)
{
while(1)
{
}
}
//
// Program some data into the EEPROM at address 0x400.
//
pui32Data[0] = 0x12345678;
pui32Data[1] = 0x56789abc;
EEPROMProgram(pui32Data, 0x400, sizeof(pui32Data));
//
// Read it back.
//
EEPROMRead(pui32Read, 0x400, sizeof(pui32Read));