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Compiler/TM4C123GH6PM: How to read/write config file on launchpad

Binghui Xiu
Prodigy 40 points

Part Number: TM4C123GH6PM

Tool/software: TI C/C++ Compiler

There are 2K storage on launchpad(TM4C123GH6PM). I want to use that to store my config file and each time I power  on my system, I could read from it and start up. Also I need to write if the config file is changed during the running time. Can anyone give me an example on how to read and write a string to the storage on launchpad please? (I don't want to add usb or anything.)

  • 0
    TI__Guru**** 191886 points

    Hi Binghui,

     Please refer to section 9.3 in the TivaWare Driver Library user's guide for the example. Below is the code snippet for read/write to the EEprom.

    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));