oops ! Sorry. Somehow I just read *'PRUs' shared RAM'* and didnt read the
*'within
a kernel driver'* part of the main question, and then thought he was asking
about PRU's shared memory usage, to share data between the two PRUs. So the
answer was to be able to use shared mem for PRU to PRU communication.
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You can probably use it as an attribute.
something like this :
__far __attribute__((cregister("PRU_SHAREDMEM", near))) volatile uint32_t
variable_1;
__far __attribute__((cregister("PRU_SHAREDMEM", near))) volatile uint32_t
variable_2;
//Somewhere In code
variable_1 = data;
variable_2 = _2_data;
So basically, the compiler allocates memory to these variables somewhere in
the shared mem and you have no control over where it gets allocated. So if
you wish to share data between the two PRUs, you can probably
define the variable in a common file and then use this exact same variable
in the two source codes.
I haven't actually tried this way. Please let us know if this works.
--
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