K22 FLASH

kathirkamuannak — Fri, 10 Feb 2017 05:02:58 GMT

Dear Sir,

I am porting my software from MK20DX128VLF5 to MK22DX256VLF5 contoller. I am storing variables in the FLASH region from address 0x1000_0000 .

I have written a snippet like this

size = (BYTE*)&param10 - (BYTE*)&param1;

WDog1_Disable();

FLASH1_SetBlockFlash((unsigned char *)&param1, 0x10000000, size);

WDog1_Clear();//CLEAR_WATCHDOG;
WDog1_Enable();

and my bean setting is

The same code and setting works well for MK20DX128VLF5. But in MK22DX256VLF5. its keep on looping the flash routine byte FLASH1_SetFlash(FLASH1_TDataAddress Src, FLASH1_TAddress Dst, word Count). its keep on looping do while loop on this section

FLASH1_RemainingDataSize = 0U;
FLASH1_CurrentCommand = FLASH1_CMD_WRITE;
FLASH1_CmdPending = TRUE;
Result = IntFlashLdd1_Write(IntFlashLdd1_DevDataPtr, (LDD_TData *)Src, Dst, (LDD_FLASH_TDataSize)Count); /* Start reading from the flash memory */
if (Result == ERR_OK) {

do {
IntFlashLdd1_Main(IntFlashLdd1_DevDataPtr);
} while (FLASH1_CmdPending);

Result = FLASH1_CmdResult;
} else {
FLASH1_CmdPending = FALSE; /* Command parameter error */
if (Result == ERR_PARAM_ADDRESS) {
Result = ERR_RANGE;
}
}
return (byte)Result;

Thanks & Regards,

A.Kathirkamu

Re: K22 FLASH

kerryzhou — Tue, 14 Feb 2017 08:23:06 GMT

Hi kathirkamu annakamu,

Please take care the following points:

1. sector size difference

MK20DX128VLF5 sector size is 1Kbyte, MK22DX256VLF5 sector size is 2 KB.

Did you define the correct sector size.

2. Before write, did you do the according address erase?

If the according flash address already have data, and you didn't erase it before you write it, the flash operation will failed.

3. Disable the interrupt.

Before the flash operation, you need to disable the global interrupt, after the flash operation is finished, you can enable the global interrupt again.

4. The launch command code should put in the RAM.

Wish it helps you!

If you still have question, please let me know!

Have a great day,
Kerry

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