esp32/machine_touchpad: Use HW timer for FSM to enable wake-on-touch.
diff --git a/ports/esp32/machine_touchpad.c b/ports/esp32/machine_touchpad.c
index 96de1a2..dd36bdd 100644
--- a/ports/esp32/machine_touchpad.c
+++ b/ports/esp32/machine_touchpad.c
@@ -69,6 +69,7 @@
     static int initialized = 0;
     if (!initialized) {
         touch_pad_init();
+        touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
         initialized = 1;
     }
     esp_err_t err = touch_pad_config(self->touchpad_id, 0);