AT90CAN128: Map the code stack in internal SRAM ?

[Kim (Gast)]

Hallo,

im Datenblatt zum AT90CAN128 steht folgendes:

Miss-functioning when code stack is in XRAM
If the stack pointer (SP) targets the XRAM and if the execution of an 
instruction is split to serve a rising interrupt, the last operation of 
this instruction, executed after pushing out the return address from 
XRAM, may be disturbed providing wrong data to the system. Example: - 
the “OUT” instruction can be executed twice
- the “MOV” instruction can update a register with un-predictable data.

Problem fix / workaround
Map the code stack in internal SRAM.

Mir ist nicht ganz klar, was da zu tun ist.

Gruß
Kim

[Frank K. (fchk)]

Packe den Stack ins interne RAM, nicht ins externe, falls Du welches 
haben solltest. Dafür gibts Compilersettings bzw Linker Control Files.

fchk