interface as select function argument Topic is solved

[myndideal]

Hi, select function is an xc specific syntax to define select cases which can be reuse in different context. It is documented in XMOS programming guide, and some more places. Each example contains only channels, but not interfaces.  https://www.xmos.com/published/how-use-select-function

I would like to use interface rather than channels. Is it possible?

Code: Select all

select local_imp(server interface memory_extender mem){ case mem.st8(uintptr_t address, unsigned data): unsafe { *((uint8_t *unsafe)address) = data; } break; //case somethingmore: break;}void handler_remote_ram(server interface memory_extender mem){ while (1) { select { case local_imp(mem): break; //case somethingelse: break; }}void handler_sdram(server interface memory_extender mem){ while (1) { select { case local_imp(mem): break; //case somethingelse: break; }} 

Error, what I got:

Code: Select all

virtaddr.xc:38:10: error: transaction does not use any chanends    case local_imp(mem):

[Vineela]

Hello, I guess this is what you are for!

https://www.xmos.com/download/private/A ... terfaces-t...

 

Thanks,

Vineela

[richard]

The syntax for calling a select function from a select is:

case local_imp(mem);

not

case local_imp(mem): break;
 
The second syntax is used for calling transaction functions from a select, and transaction functions must have a channel end argument (which I think is why the error message mentions chanends).