Posted by Ahmed Abasiry as init.s -o init.o I apprecaite any help and I can give any more details if needed. This thing is getting on my nerves!!
on August 30, 2002, 22:46:47
Hi All,
I have written a code for the 2144F EVB which uses interrupts.. All O.K.
Now, I moved to a prototype board (code in the 2144F flash) all O.K. except my interrupts are misbehaving!! I only write assembly, no "C". I have troubleshot my code in the "Srec" file and found the problem, however, I don't have a solution yet. Here's the problem:
1- The interrupt routine is called "ISR" and is located at 0x06B4 in the flash ROM
2- The vector table entry to point to the ISR is written as : .data.l ISR
3- From the Srec file, the ISR vector is in the correct place in the vector table. However, the address in the vector table points to 0x06B6 rather than 0x06B4 where the ISR is physically located.
4- To confirm, I have manually changed the address pointer in the vector table to the correct ISR address (0x06B4) and everything worked smooth!!!
5- The processor is running in mode 2 Advance expanded.
6- The ISR is loacted in one file and the vector table is located in another. Both files are assembled and then linked together.
7- I am using the Cygnus GNU tools that came with the EVB. I personally suspecting some switch or so in the assembly command line. I am not really great with GNU stuff..
8- The assembly/link batch file reads:
as led.s -o led.o
ld init.o led.o -relax -Map led.map -T link.cmd -o led.srec
Thanks in advance!!
Message Thread:
« Back to thread