stmhal: Make switch a class, to follow suit of all other modules.

Instead of pyb.switch() as a function, it's more consistent (with
respect to all the other modules and peripherals) to have
pyb.Switch() create a switch object.  This then generalises to having
multiple switches.  Call the object to get its state.  Use sw.callback
to set the callback function for when the switch is pressed.

1 files changed, 1 insertions, 2 deletions

diff --git a/stmhal/usrsw.h b/stmhal/usrsw.h
index b1b838653..f60147c54 100644
--- a/stmhal/usrsw.h
+++ b/stmhal/usrsw.h
@@ -1,5 +1,4 @@
 void switch_init0(void);
-void switch_init(void);
 int switch_get(void);
 
-MP_DECLARE_CONST_FUN_OBJ(pyb_switch_obj);
+extern const mp_obj_type_t pyb_switch_type;