Posted on January 28, 2008 at 07:39Hi,
After doing a bootloader to load a new program, i reset my MCU and only the code in sector 0 (main()) is executed. When the program calls the fist routine loacated in the sector 2, nothing happens. Why?
Otherwise, another test what i did consists to load the same software thanks to my bootloader. In this case, there is no problem!
Below, what i noticed when i change my original software located in MCU before loading again:
1) Original code in sector 2:
#if DEBUG_BOOT
sci_Send_Byte_Boot(0xA1);
#endif
becomes
#if DEBUG_BOOT
sci_Send_Byte_Boot(0xA2);
#endif
In this case, after loading this new program, no problem!
But now, if i add some new lines in my new software:
#if DEBUG_BOOT
sci_Send_Byte_Boot(0xAA);
sci_Send_Byte_Boot(0xA2);
sci_Send_Byte_Boot(0xBB);
#endif
In this case, the first routine in sector 2 is not called. Maybe it's due to the changing of memory size?
Below, a comparison between the original and new map file (only the beginning of sector 2 which begins to 0x1000 adress):
New:
Init_sector2 1000 3 ( 1) CODE INIT_SECTOR
Loop 1003 8 ( 1) CODE LOOP_SECTOR
interrupt_timerA 1020 26 ( 0) CODE CALL_VECTOR10
main_run 1046 86 ( 1) CODE FUNCS
main_task 10CC 3 ( 1) CODE FUNCS
main_serial 10CF 114 ( 2) CODE FUNCS
Original:
Init_sector2 1000 3 ( 1) CODE INIT_SECTOR
Loop 1003 8 ( 1) CODE LOOP_SECTOR
interrupt_timerA 1020 26 ( 0) CODE CALL_VECTOR10
main_run 1046 7C ( 1) CODE FUNCS
main_task 10C2 3 ( 1) CODE FUNCS
main_serial 10C5 114 ( 2) CODE FUNCS
Regards,
Nicolas
[ This message was edited by: nicolas_homeostasie on 28-01-2008 12:13 ]
[ This message was edited by: nicolas_homeostasie on 28-01-2008 12:14 ]
[ This message was edited by: nicolas_homeostasie on 28-01-2008 12:15 ]
