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Problem erasing sectors ( IAP_EraseSec )

Fabio Afellay

Hi,

I need help. I'm using the IAP, secondary bootloader.
I'm having a problem erasing sectors.
When I try to erase a sector, it hangs at function "iap_entry(command, result)" in erase function.

It passes through Prepare function successfully.

The code:

#define IAP_LOCATION   0x7FFFFFF1
#define IAP_CLK        48000000
#define AP_ADDR        0x10000// where the user app located

typedef void (*FP)(void);/* run the user application from pre-specified address*/

#define iap_entry(a, b)     ((void (*)())(IAP_LOCATION))(a, b)

unsigned long  command[5];
unsigned long  result[3];

The ERASE FUNCTION:

unsigned long IAP_EraseSec (unsigned long StartSecNum,  unsigned long EndSecNum)
{
        if (EndSecNum < StartSecNum)
                return IAP_STA_INVALD_PARAM;
        command[0] = IAP_CMD_EraseSec;
        command[1] = StartSecNum;
        command[2] = EndSecNum;
        command[3] = IAP_CLK / 1000;
        _printf("\r\n*******ERASE3************");
        iap_entry(command, result);
        _printf("\r\n*******ERASE4************");

        return result[0];
}

The PREPARE FUNCTION:(that one works ok)

unsigned long IAP_PrepareSec (unsigned long StartSecNum, unsigned long EndSecNum)
{
        if (EndSecNum < StartSecNum)
                return IAP_STA_INVALD_PARAM;
        command[0] = IAP_CMD_EraseSec;
        command[1] = StartSecNum;
        command[2] = EndSecNum;
        command[3] = IAP_CLK / 1000;
        _printf("\r\n*******ERASE3************");
        iap_entry(command, result);
        _printf("\r\n*******ERASE4************");

        return result[0];
}


Can anyone help me?

thanks

Parents
  • 0

    I remember a similar problem we had and the cause is that our bootloader and user application were using different clock settings (system settings). The boot was working ok on his own so was the user application but the jump from one to the other didn't work.

    I don't if this relevant to you but it may help you.

Reply
  • 0

    I remember a similar problem we had and the cause is that our bootloader and user application were using different clock settings (system settings). The boot was working ok on his own so was the user application but the jump from one to the other didn't work.

    I don't if this relevant to you but it may help you.

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