Stop StateMachine explicitly on deinit

Author: dhalbert

ports/raspberrypi/common-hal/rotaryio/IncrementalEncoder.c

@@ -91,8 +91,6 @@ void common_hal_rotaryio_incrementalencoder_construct(rotaryio_incrementalencode
         false, // Wait for txstall
         false, 32, false); // in settings
 
-    common_hal_rp2pio_statemachine_run(&self->state_machine, encoder_init, MP_ARRAY_SIZE(encoder_init));
-
     // We're guaranteed by the init code that some output will be available promptly
     uint8_t quiescent_state;
     common_hal_rp2pio_statemachine_readinto(&self->state_machine, &quiescent_state, 1, 1);

ports/raspberrypi/common-hal/rp2pio/StateMachine.c

@@ -553,6 +553,8 @@ void common_hal_rp2pio_statemachine_set_frequency(rp2pio_statemachine_obj_t *sel
 }
 
 void rp2pio_statemachine_deinit(rp2pio_statemachine_obj_t *self, bool leave_pins) {
+    common_hal_rp2pio_statemachine_stop(self);
+
     uint8_t sm = self->state_machine;
     uint8_t pio_index = pio_get_index(self->pio);
     common_hal_mcu_disable_interrupts();