I reworked UserButtonP.nc, UserButtonC.nc, SwitchToggleC.nc from
tinyos-2.x/tos/platforms/telosb
and their test program
tinyos-2.x/apps/tests/telosb/TestUserButton/TestUserButtonC.nc,
TestUserButtonAppC.nc to get some practice with generic modules and came
across something I don't understand.
IN SwitchToggleC(), the Notify type can be bool
generic module SwitchToggleC() {
provides interface Get<bool>;
provides interface Notify<bool>;
but then when instantiated, the globally provided interface is changed
to type <button_state_t>
==================
module UserButtonP {
provides interface Get<button_state_t>;
provides interface Notify<button_state_t>;
==============
============
configuration UserButtonC {
provides interface Get<button_state_t>;
provides interface Notify<button_state_t>;
}
==============
If I change the type to bool everywhere it won't compile.
The Notify interface says,
/opt/tinyos-2.x/tos/interfaces/Notify.nc
======================================
/*
* @param val_t the type of the object that will be stored
*/
interface Notify<val_t> {
command error_t enable();
command error_t disable();
event void notify( val_t val );
}
Can val_t be bool? If so, what is going wrong if when I change
val_t everywhere to bool, the compiler message says,
In file included from TestMSP430platfIOC.nc:22:
In component `TestMSP430platfIOP':
TestMSP430platfIOP.nc:82: conflicting types for `Notify.notify'
/opt/tinyos-2.x/tos/interfaces/Notify.nc(TestMSP430platfIOP):74:
previous declaration of `Notify.notify'
?
Thanks,
John Griessen
Ecosensory
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