topic Re: bootloader mc9s12xeg128 in S12 / MagniV Microcontrollers

bootloader mc9s12xeg128

javadshabani — Mon, 02 May 2022 07:04:08 GMT

hello every one

i am working on mc9s12xeg128MAL (or mc9s12xet256mal) for writing a bootloader. i am download the AN4258SW and use Bootloader_S12X example, but it seems this code is hanging.

i have multilink universal fx for debuging.

Re: bootloader mc9s12xeg128

javadshabani — Mon, 02 May 2022 07:09:47 GMT

I have read the documents required for bootloader, but I have trouble setting it up

Re: bootloader mc9s12xeg128

javadshabani — Sun, 08 May 2022 05:03:02 GMT

i am used the AN4258SW sample code but When the interrupt is activated and the interrupt occurs, the program hangs.

i am send serial data when interrupt disabled, after send 0x55 two time, interrupt enabled and program hangs.

Re: bootloader mc9s12xeg128

lukaszadrapa — Thu, 19 May 2022 14:04:49 GMT

Hi Javad,

I can see in the code that you commented out function CopyCodeToRAM(). However, the interrupt handlers are placed to RAM, so this won't work. Interrupt is triggered but there's no valid handler in this case.

Regards,

Lukas

Re: bootloader mc9s12xeg128

javadshabani — Sat, 21 May 2022 05:33:05 GMT

thanks

I created the interrupt vector table with processor export and was able to set up the serial port.

I also did not need to create a code in the RAM section and replaced the following phrase

// # pragma CODE_SEG RAM_CODE

#pragma CODE_SEG NON_BANKED