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IAP_ReinvokeISP

Question asked by Joe Holiday on Jan 29, 2019
Latest reply on Apr 5, 2019 by Seow Woo Quek

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I am invoking iap_entry to force it into ISP mode using UART 0, regardless of the ISP0/1/2 pin state. I use ISP_ReinvokeISP provided in fsl_iap.h with these arguments:

uint32_t status = 0;

IAP_Reinvoke(1, &status); // Argument 1 as 1 forces booting into ISP UART mode according to documentation

However, this always fails with status = ERR_ISP_REINVOKE_ISP_CONFIG

This is on a LPC51U68 using the LPCXpresso demo board. I do have UART clocks enabled at this time.

Does this processor support iap_entry to boot into ISP mode? Or are there other conditions I need in place before calling ISP_ReinvokeISP?

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Alice_Yang Jan 30, 2019 2:29 AM
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Hello Joe Holiday,
From the user manual of lpc51u68, it support "Reinvoke ISP " command,
could you please send your project to me , then I can reproduce the problem on my side,
and check it .

BR
Alice
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Alice_Yang Mar 12, 2019 8:00 AM
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Hello Joe Holiday ,
I have checked your code, please change your IAP_ReinvokeISP function as below:

void IAP_ReinvokeISP(uint8_t ispType, uint32_t *status)
{
    uint32_t command[5], result[5];
    uint8_t ispParameterArray[8];

    command[0] = kIapCmd_FLASHIAP_ReinvokeISP;
    /*
    memset(ispParameterArray, 0, sizeof(uint8_t) * 8);
   ispParameterArray[1] = ispType;
    ispParameterArray[7] = ispParameterArray[0] ^ ispParameterArray[1] ^ ispParameterArray[2] ^ ispParameterArray[3] ^
                           ispParameterArray[4] ^ ispParameterArray[5] ^ ispParameterArray[6];
   */
    command[1] =ispType;
    iap_entry(command, result);
    *status = translate_iap_status(result[0]);
}

Have a great day,
TIC

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- Seow Woo Quek @ Alice_Yang on Apr 5, 2019 1:03 AM
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  Hi ,
  I am using the same IAP_ReinvokeISP but I want to use the USB = 2. but it cannot recognize the usb device. I was using the lpcxpresso51u68_iap_flash example.
  I just added
  PRINTF("\r\nIAP_ReinvokeISP\r\n");
  IAP_ReinvokeISP(2, &status);
  if (status != kStatus_IAP_Success)
  {
  PRINTF("\r\nReinvoke ISP failed\r\n");
  }
  I would like to use the drag and drop method just like when I press the ISP0 button on the LPCXpresso board but using the IAP_ReinvokeISP with param = 2
  Thanks.
  Attachments
  - Unknown USB.PNG265.1 KB
  - iap_flash.c.zip1.4 KB
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IAP_ReinvokeISP

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