feat(pycardium): Add RTC_ALARM interrupt number

Signed-off-by: Rahix <rahix@rahix.de>

Documentation/pycardium/utime.rst

@@ -65,3 +65,22 @@ alarm.
          utime.alarm(alarm, minute_timer)
 
       minute_timer(None)
+
+   Alternatively, you can register a callback using the interrupt module and
+   then call :py:func:`utime.alarm` without a ``callback`` parameter:
+
+   .. code-block:: python
+
+      import interrupt, utime
+
+      def 5_second_timer(x):
+         current = utime.time()
+         print("Current: " + str(current))
+         alarm = (current // 10) * 10 + 5
+         utime.alarm(alarm)
+
+      # This time, we need to register and enable the callback manually
+      interrupt.set_callback(interrupt.RTC_ALARM, 5_second_timer)
+      interrupt.enable_callback(interrupt.RTC_ALARM)
+
+      5_second_timer(None)

pycardium/modules/interrupt.c

@@ -81,7 +81,12 @@ static const mp_rom_map_elem_t interrupt_module_globals_table[] = {
 	  MP_ROM_PTR(&interrupt_enable_callback_obj) },
 	{ MP_ROM_QSTR(MP_QSTR_disable_callback),
 	  MP_ROM_PTR(&interrupt_disable_callback_obj) },
-	{ MP_ROM_QSTR(MP_QSTR_BHI160), MP_OBJ_NEW_SMALL_INT(2) },
+
+	/* Interrupt Numbers */
+	{ MP_ROM_QSTR(MP_QSTR_BHI160),
+	  MP_OBJ_NEW_SMALL_INT(EPIC_INT_BHI160_TEST) },
+	{ MP_ROM_QSTR(MP_QSTR_RTC_ALARM),
+	  MP_OBJ_NEW_SMALL_INT(EPIC_INT_RTC_ALARM) },
 };
 static MP_DEFINE_CONST_DICT(
 	interrupt_module_globals, interrupt_module_globals_table

pycardium/modules/qstrdefs.h

@@ -34,6 +34,7 @@ Q(set_callback)
 Q(enable_callback)
 Q(disable_callback)
 Q(BHI160)
+Q(RTC_ALARM)
 
 /* display */
 Q(sys_display)