• State Not Answered
  • Locked Locked
  • Replies 15 replies
  • Subscribers 21 subscribers
  • Views 1994 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

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 in reply to Fabio Afellay

    You should not play with #define like that.

    A more readable solution is:

    typedef  void (*IAP)(unsigned[],unsigned[]);
IAP iap_entry = (IAP)IAP_LOCATION;

unsigned cmd[5];
unsigned res[3];

...

cmd[0] = PREPARE_SECTOR;
cmd[1] = start_sector;
cmd[2] = end_sector;
iap_entry(cmd,res);

...

cmd[0] = ERASE_SECTORS;
cmd[3] = CCLK / 1000;
iap_entry(cmd,res);

...

Reply
  • 0 in reply to Fabio Afellay

    You should not play with #define like that.

    A more readable solution is:

    typedef  void (*IAP)(unsigned[],unsigned[]);
IAP iap_entry = (IAP)IAP_LOCATION;

unsigned cmd[5];
unsigned res[3];

...

cmd[0] = PREPARE_SECTOR;
cmd[1] = start_sector;
cmd[2] = end_sector;
iap_entry(cmd,res);

...

cmd[0] = ERASE_SECTORS;
cmd[3] = CCLK / 1000;
iap_entry(cmd,res);

...

Children