Want to store something in the flash. How to identify the location where to store?
This is the memory allocation. Is it fine if I store my data at location 0x3000. I have checked it it is empty.
Is there any automated way to find where to store the data, rather than me physically looking at the address?
EDIT 1:
this is how I am writing to the flash:
void flash_write()
{
// write the variables pass,ctp,cts,op1,op2 to respective flash locations
DL_FlashCTL_unprotectSector( FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);/* Unprotect sector in main memory with ECC generated by hardware */
gCmdStatus = DL_FlashCTL_eraseMemoryFromRAM( FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_COMMAND_SIZE_SECTOR);/* Erase sector in main memory */
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_ERASE;
}
//----------------------------------------------------------------------------------------------------------------------------------------
if (gErrorType == NO_ERROR) //cts 0x3000
{
/* 32-bit write to flash in main memory with ECC generated by hardware */
DL_FlashCTL_unprotectSector(FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);
gCmdStatus = DL_FlashCTL_programMemoryFromRAM32WithECCGenerated(FLASHCTL, (0x3000), &ctp);
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_32BIT_W;
}
}
if (gErrorType == NO_ERROR) //ctp 0x3008
{
/* 8-bit write to flash in main memory */
DL_FlashCTL_unprotectSector(FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);
gCmdStatus = DL_FlashCTL_programMemoryFromRAM8WithECCGenerated( FLASHCTL, 0x3008, &cts);
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_8BIT_W;
}
}
if (gErrorType == NO_ERROR) //pass 0x3010
{
/*
* 16-bit write to flash in main memory with ECC generated by hardware.
* The target program address must be a flash word address
* (8-byte aligned), so we increase the address in increments of 8.
*/
DL_FlashCTL_unprotectSector(FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);
gCmdStatus = DL_FlashCTL_programMemoryFromRAM16WithECCGenerated(FLASHCTL, (0x3010), &pass);
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_16BIT_W;
}
}
if (gErrorType == NO_ERROR) //op1 0x3018
{
/* 8-bit write to flash in main memory */
DL_FlashCTL_unprotectSector(FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);
gCmdStatus = DL_FlashCTL_programMemoryFromRAM8WithECCGenerated( FLASHCTL, 0x3018, &op1);
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_8BIT_W;
}
}
if (gErrorType == NO_ERROR) //op2 0x3020
{
/* 8-bit write to flash in main memory */
DL_FlashCTL_unprotectSector(FLASHCTL, MAIN_BASE_ADDRESS, DL_FLASHCTL_REGION_SELECT_MAIN);
gCmdStatus = DL_FlashCTL_programMemoryFromRAM8WithECCGenerated( FLASHCTL, 0x3020, &op2);
if (gCmdStatus == DL_FLASHCTL_COMMAND_STATUS_FAILED)
{
/* If command was not successful, set error flag */
gErrorType = ERROR_8BIT_W;
}
}
}
This is how I am reading from the flash:
void flash_remember()
{
//from each flash location read the value and store it in the respective variables.
//variables are pass,ctp,cts,op1,op2
ptrA=(uint8_t*)0x3018;
// op1 =*ptrA;
op1_temp =*ptrA;
ptrA=(uint8_t*)0x3020;
// op2 =*ptrA;
op2_temp =*ptrA;
ptrA=(uint8_t*)0x3008;
// cts =*ptrA;
cts_temp =*ptrA;
ptrB=(uint16_t*)0x3010;
// pass =*ptrB;
pass_temp =*ptrB;
ptrC=(uint32_t*)0x3000;
// ctp =*ptrC;
ctp_temp =*ptrC;
}
