ASM51

The MPLAB XC16 C Compiler fully supports pointers to functions, which allows functions
to be called indirectly. Function pointers are always 16 bits wide.
In the small code model (up to 32 kWords of code), 16-bit wide function pointers can
access any function location. In the large code model, which supports more than 32
kWords of code, pointers hold the address of a GOTO instruction in a lookup table.
These instructions are able to reach any memory location, but the lookup table itself is
located in the lower program memory, thus allowing the pointers themselves to remain
as 16-bit wide variables.

Código: Selecionar todos

typedef BOOL (*pp_timers_callback) (void);

pp_timers_callback pp_cb;

pp_cb = MinhaFuncao;

if ((p_cb())
{
   xyz;
}


andre_teprom escreveu:Declarando como far não resolveria ?


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2.5.3 Far Objects and Functions
The __far qualifier may be used to indicate that variables or functions may be located
in ‘far memory’. Exactly what constitutes far memory is dependent on the target device,
but it is typically memory that requires more complex code to access. Expressions
involving far-qualified objects may generate slower and larger code.
Use the native keywords discussed in the Differences section to look up information on
the semantics of this qualifier.

barboza escreveu:

andre_teprom escreveu:Declarando como far não resolveria ?


+++

Pode ser que funcione, vou testar e lhe digo mais tarde.

2.5.3 Far Objects and Functions
The __far qualifier may be used to indicate that variables or functions may be located
in ‘far memory’. Exactly what constitutes far memory is dependent on the target device,
but it is typically memory that requires more complex code to access. Expressions
involving far-qualified objects may generate slower and larger code.
Use the native keywords discussed in the Differences section to look up information on
the semantics of this qualifier.

andre_teprom escreveu:Qual é exatamente o erro que está ocorrendo ? De compilação ou de link ?


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Código: Selecionar todos

pp_timers_callback const pp_cb[EN_TIMER_ID_END] = {
      p_timer_wdt_cb,
      p_output_timer_cb,
      p_input_timer_cb,
      p_app_StackTask_cb,
      p_app_state_machine_cb

};


Código: Selecionar todos

pp_timers_callback pp_cb2[EN_TIMER_ID_END];


The MPLAB XC16 C Compiler fully supports pointers to functions, which allows functions
to be called indirectly. Function pointers are always 16 bits wide.
In the small code model (up to 32 kWords of code), 16-bit wide function pointers can
access any function location. In the large code model, which supports more than 32
kWords of code, pointers hold the address of a GOTO instruction in a lookup table.
These instructions are able to reach any memory location, but the lookup table itself is
located in the lower program memory, thus allowing the pointers themselves to remain
as 16-bit wide variables.
As function pointers are only 16-bits wide, these pointers cannot point beyond the first
64K of FLASH. Should the address of a function that is allocated beyond the first 64K
of FLASH be taken, the linker will arrange for a handle section to be generated. The
handle section will always be allocated within the first 64K. Each handle provides a
level of indirection which allows 16-bit pointers to access the full range of FLASH. This
operation may be disable with the --no-handles linker option.

andre_teprom escreveu:Apenas por curiosidade, funcionou na versão original do código, ou com as modificações sugeridas ?


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