int main()
{
/* Unlock protected register */
SYS_UnlockReg();
SYS_Init();
UART_Init();
printf("\n\n");
printf("M451 FMC IAP Sample Code [LDROM code]\n");
/* Enable FMC ISP function */
FMC_Open();
printf("\n\nPress any key to branch to APROM...\n");
getchar();
printf("\n\nChange VECMAP and branch to LDROM...\n");
UART_WAIT_TX_EMPTY(UART0);
/* Mask all interrupt before changing VECMAP to avoid wrong interrupt handler fetched */
__set_PRIMASK(1);
/* Change VECMAP for booting to APROM */
FMC_SetVectorPageAddr(FMC_APROM_BASE);
/* Lock protected Register */
SYS_LockReg();
/* Software reset to boot to APROM */
NVIC_SystemReset();
while(1);
}
int aprom()
{
uint8_t u8Item;
uint32_t u32Data;
char *acBootMode[] = {"LDROM+IAP", "LDROM", "APROM+IAP", "APROM"};
uint32_t u32CBS;
/* Unlock protected registers */
SYS_UnlockReg();
/* Init system clock and multi-function I/O */
SYS_Init();
/* Init UART */
UART_Init();
printf("\n\n");
printf("+----------------------------------------+\n");
printf("| NUC029 FMC IAP Sample Code |\n");
printf("| [APROM code] |\n");
printf("+----------------------------------------+\n");
/* Enable FMC ISP function */
FMC_Open();
if(SetIAPBoot() < 0)
{
printf("Failed to set IAP boot mode!\n");
goto lexit;
}
/* Get boot mode */
printf(" Boot Mode ............................. ");
u32CBS = (FMC->ISPSTA & FMC_ISPSTA_CBS_Msk) >> FMC_ISPSTA_CBS_Pos;
printf("[%s]\n", acBootMode[u32CBS]);
u32Data = FMC_ReadCID();
printf(" Company ID ............................ [0x%08x]\n", u32Data);
u32Data = FMC_ReadDID();
printf(" Device ID ............................. [0x%08x]\n", u32Data);
u32Data = FMC_ReadPID();
printf(" Product ID ............................ [0x%08x]\n", u32Data);
/* Read User Configuration */
printf(" User Config 0 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE));
printf(" User Config 1 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE + 4));
do
{
printf("\n\n\n");
printf("+----------------------------------------+\n");
printf("| Select |\n");
printf("+----------------------------------------+\n");
printf("| [0] Load IAP code to LDROM |\n");
printf("| [1] Run IAP program (in LDROM) |\n");
printf("+----------------------------------------+\n");
printf("Please select...");
u8Item = UART_GetChar();
printf("%c\n", u8Item);
switch(u8Item)
{
case '0':
FMC_EnableLDUpdate();
if(LoadImage((uint32_t)&loaderImage1Base, (uint32_t)&loaderImage1Limit,
FMC_LDROM_BASE, FMC_LDROM_SIZE) != 0)
{
printf("Load image to LDROM failed!\n");
goto lexit;
}
FMC_DisableLDUpdate();
break;
case '1':
printf("\n\nChange VECMAP and branch to LDROM...\n");
UART_WAIT_TX_EMPTY(UART0); /* To make sure all message has been print out */
/* Mask all interrupt before changing VECMAP to avoid wrong interrupt handler fetched */
__set_PRIMASK(1);
/* Set VECMAP to LDROM for booting from LDROM */
FMC_SetVectorPageAddr(FMC_LDROM_BASE);
/* Software reset to boot to LDROM */
NVIC_SystemReset();
break;
default :
break;
}
}
while(1);
lexit:
/* Disable FMC ISP function */
FMC_Close();
/* Lock protected registers */
SYS_LockReg();
printf("\nFMC Sample Code Completed.\n");
while(1);
}