touch: change iface num to 255

micropython/extmod/modtrezormsg/modtrezormsg.c

@@ -401,7 +401,7 @@ STATIC mp_obj_t mod_TrezorMsg_Msg_send(mp_obj_t self, mp_obj_t iface, mp_obj_t m
 STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorMsg_Msg_send_obj, mod_TrezorMsg_Msg_send);
 
 #define TICK_RESOLUTION 1000
-#define TOUCH_IFACE 0
+#define TOUCH_IFACE 255
 extern uint32_t touch_read(void); // defined in HAL
 
 /// def trezor.msg.select(timeout_us: int) -> tuple:

src/trezor/loop.py

@@ -14,11 +14,7 @@ from micropython import const
 from trezor import msg
 from trezor import log
 
-# message interfaces:
-# 0x0000           - touch event interface
-# 0x0001 - 0xFFFF  - USB HID
-
-TOUCH = const(0)  # interface
+TOUCH = const(255)  # interface
 TOUCH_START = const(1)  # event
 TOUCH_MOVE = const(2)  # event
 TOUCH_END = const(4)  # event