CODEWITHSUNDEEP
bootloadermicrochippic18
Hanaan Abbas
Hanaan Abbas

Reputation: 1

Unable to make Bootloader PC jump to application address 0x4000 in Program flash memory

Can someone please help me.

I am using PIC18F26Q10 mcu bootloader code starts from 0xF00 and application code starts from 0x4000 The below code is what I tried out but the switch doesn't seem to happen. In debug I could observe the breakpoint hitting at 0x4000 but it dint work. when I read the target hex using MPLAB IDE all the code is in correct address location.

MPLAB IDE v5.45 and xc8 v2.45

where am I going wrong?

I have used the same code in PIC18F26K22 and PIC18F26K42 it works there

I am using :

`STKPTR = 0x00;
PCLATU = 0x00;
PCLATH = 0X41;
PCL = 00;`

I tried this as well:

#define RESET_ADDRESS_APPLICATION 0x004000UL STKPTR = 0x00; asm("GOTO " ___mkstr(RESET_ADDRESS_APPLICATION));

Upvotes: 0

Views: 176

Answers (1)

CircuitMonkey
CircuitMonkey

Reputation: 1

I was running into a similar problem. It looks like it doesn't like UL defined constant.

#define RESET_ADDRESS_APPLICATION 0x4000

...

asm("GOTO " ___mkstr(RESET_ADDRESS_APPLICATION));

Upvotes: 0

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