From 6cfe240812e9c87bb2d48210c6551f3a11d1bce5 Mon Sep 17 00:00:00 2001
From: chrysn <chrysn@fsfe.org>
Date: Tue, 30 Aug 2022 10:51:59 +0200
Subject: [PATCH] makefiles: Select suitable terminal when stdio_rtt is used

Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
---
 makefiles/tools/serial.inc.mk | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/makefiles/tools/serial.inc.mk b/makefiles/tools/serial.inc.mk
index ac90ef0d82..306d7a8824 100644
--- a/makefiles/tools/serial.inc.mk
+++ b/makefiles/tools/serial.inc.mk
@@ -23,6 +23,16 @@ PROG_DEV ?= $(PORT)
 
 export BAUD ?= 115200
 
+ifneq (,$(filter stdio_rtt,$(USEMODULE)))
+  ifeq (${PROGRAMMER},openocd)
+    RIOT_TERMINAL ?= openocd-rtt
+  else ifeq (${PROGRAMMER},jlink)
+    RIOT_TERMINAL ?= jlink
+  else ifeq (${RIOT_TERMINAL},)
+    $(warning "Warning: No RIOT_TERMINAL set, but using stdio_rtt: The default terminal is likely not to work.")
+  endif
+endif
+
 RIOT_TERMINAL ?= pyterm
 ifeq ($(RIOT_TERMINAL),pyterm)
   TERMPROG  ?= $(RIOTTOOLS)/pyterm/pyterm