Backport meatpack feature from upstream

2021-08-20 13:45:16 +10:00
parent b3f4dcb2d1
commit 92bfd1b495
13 changed files with 491 additions and 111 deletions
--- a/Marlin/src/core/serial.h
+++ b/Marlin/src/core/serial.h
@@ -45,10 +45,10 @@ enum MarlinDebugFlags : uint8_t {

 extern uint8_t marlin_debug_flags;
 #define DEBUGGING(F) (marlin_debug_flags & (MARLIN_DEBUG_## F))
-
+typedef int8_t serial_index_t;
 #define SERIAL_BOTH 0x7F
 #if NUM_SERIAL > 1
-  extern int8_t serial_port_index;
+  extern serial_index_t serial_port_index;
  #define _PORT_REDIRECT(n,p)   REMEMBER(n,serial_port_index,p)
  #define _PORT_RESTORE(n)      RESTORE(n)
  #define SERIAL_OUT(WHAT, V...) do{ \