/********************************************************************
* Function: main()
*
* Precondition:
*
* Input: None.
*
* Output: None.
*
* Side Effects: None.
*
* Overview: Main entry function. If there is a trigger or
* if there is no valid application, the device
* stays in firmware upgrade mode.
*
*
* Note: None.
********************************************************************/
INT main(void)
{
UINT pbClk;
UINT bSoftResetFlag = 0;
// Setup configuration
pbClk = SYSTEMConfig(SYS_FREQ, SYS_CFG_WAIT_STATES | SYS_CFG_PCACHE);
InitLED();
TRISBbits.TRISB15 = 1;//test
bSoftResetFlag = *(unsigned int *)(NVM_DATA);
if(bSoftResetFlag == 1)
{
NVMErasePage((void*)NVM_DATA);
NVMWriteWord((void*)(NVM_DATA), (unsigned int)0x00);
}
// Enter firmware upgrade mode if there is a trigger or if the application is not valid
if(bSoftResetFlag == 1 || CheckTrigger() || !ValidAppPresent())
{
// Initialize the transport layer - UART/USB/Ethernet
TRANS_LAYER_Init(pbClk);
while(!FRAMEWORK_ExitFirmwareUpgradeMode()) // Be in loop till framework recieves "run application" command from PC
{
// Enter firmware upgrade mode.
// Be in loop, looking for commands from PC
TRANS_LAYER_Task(); // Run Transport layer tasks
FRAMEWORK_FrameWorkTask(); // Run frame work related tasks (Handling Rx frame, process frame and so on)
// Blink LED (Indicates the user that bootloader is running).
BlinkLED();
}
// Close trasnport layer.
TRANS_LAYER_Close();
}
// No trigger + valid application = run application.
JumpToApp();
return 0;
}
/********************************************************************
* Function: main()
*
* Precondition:
*
* Input: None.
*
* Output: None.
*
* Side Effects: None.
*
* Overview: Main entry function. If there is a trigger or
* if there is no valid application, the device
* stays in firmware upgrade mode.
*
*
* Note: None.
********************************************************************/
INT main(void)
{
UINT pbClk;
// Setup configuration
pbClk = SYSTEMConfig(SYS_FREQ, SYS_CFG_WAIT_STATES | SYS_CFG_PCACHE);
InitLED();
mLED = 0;
TRISAbits.TRISA4 = 1; // TEST pin
CNPDAbits.CNPDA4 = 1; // Pull-down
delay_us( 10 ); // Wait a bit until the port pin got pulled down.
// Enter firmware upgrade mode if there is a trigger or if the application is not valid
if(CheckTrigger() || !ValidAppPresent())
{
// Initialize the transport layer - UART/USB/Ethernet
TRANS_LAYER_Init(pbClk);
while(!FRAMEWORK_ExitFirmwareUpgradeMode()) // Be in loop till framework recieves "run application" command from PC
{
// Enter firmware upgrade mode.
// Be in loop, looking for commands from PC
TRANS_LAYER_Task(); // Run Transport layer tasks
FRAMEWORK_FrameWorkTask(); // Run frame work related tasks (Handling Rx frame, process frame and so on)
// Blink LED (Indicates the user that bootloader is running).
BlinkLED();
}
// Close trasnport layer.
TRANS_LAYER_Close();
mLED = 0;
while ( CheckTrigger() ) {}; // Do not run the application while TEST is still tied to VCC.
}
// No trigger + valid application = run application.
CNPDAbits.CNPDA4 = 0; // turn off Pull-down
JumpToApp();
return 0;
}
