LPC Microcontrollers中的主题 Re: Firmware Upgrade via ISP in LPC2364

Firmware Upgrade via ISP in LPC2364

neethugprem — Tue, 30 Aug 2016 10:11:31 GMT

Hi,

We are using LPC2364 controller.

As we are not able to access ISP pin in our actual design, we were trying to reinvoke ISP by making ISP pin low.

It is found that the controller is not boot mode.

I found a code in the below link:

LPC2100: Entering ISP mode from user code

As it was for LPC2100 , I made few changes.

The changed code is as below.

void StartISP(unsigned long wdticks)
{
void (*bootloader_entry)(void) = (void*)0;

               /* reset PINSEL (set all pins to GPIO) */
              PINSEL0 = 0x00000000;
              PINSEL1 = 0x00000000;
              PINSEL2 = 0x00000000;
              PINSEL3 = 0x00000000;
              PINSEL4 = 0x00000000;
              PINSEL7 = 0x00000000;
              PINSEL10 = 0x00000000;

              /* reset GPIO, but drive P2.10 low (output) */
              FIO2DIR = (1<<10);
              FIO2CLR = (1<<10);

              /* power up all peripherals */
              PCONP = 0x00280FFE; /

              /* disconnect PLL */
              PLLCON = 0x00;
              PLLFEED = 0xaa;
              PLLFEED = 0x55;

              /* set peripheral bus to 1/4th of the system clock */
              APBDIV = 0x00;
              /* map bootloader vectors */
              MEMMAP = 0;

/* jump to the bootloader address */
bootloader_entry();
}

Pls help me to fix the problem.

Regards,

Neethu

Re: Firmware Upgrade via ISP in LPC2364

CarlosCasillas — Thu, 08 Sep 2016 21:58:29 GMT

Hi Neethu,

You can change your code with AN10356 “Entering ISP mode from user code”, available on the following link:

http://www.nxp.com/documents/application_note/AN10356.pdf

Hope this will be useful for you.
Best regards!
/Carlos
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Re: Firmware Upgrade via ISP in LPC2364

neethugprem — Fri, 09 Sep 2016 04:48:22 GMT

Hi Carlos,

I tried this too, but it not working..

Plz do help me.

Regards,

Neethu

Re: Firmware Upgrade via ISP in LPC2364

CarlosCasillas — Mon, 19 Sep 2016 22:41:11 GMT

H Neethui,

Maybe you want to use 'Reinvoke ISP' IAP command? You can refer the attached document, and to the AN of the following link:

http://www.nxp.com/documents/application_note/AN10256.pdf

Re: Firmware Upgrade via ISP in LPC2364

neethugprem — Fri, 23 Sep 2016 06:12:36 GMT

Hi Carlos,

I used AN10356 and firmware upgrade is working fine now. Thank you very much for your support.

Regards,

Neethu