tools/serial.inc.mk: Support miniterm.py.

miniterm.py is a simple terminal program that is included with pyserial.
This means that it is available wherever pyterm can work. It allows raw
access, does line translation and passes through special characters.

For test scripts, a terminal that does not modify the input and output
streams, configured without local echo, is preferred as it ensures the
test setup is introducing as few noise as possible.

makefiles/tools/serial.inc.mk

@@ -19,4 +19,7 @@ ifeq ($(RIOT_TERMINAL),pyterm)
 else ifeq ($(RIOT_TERMINAL),picocom)
     export TERMPROG  ?= picocom
     export TERMFLAGS ?= --nolock --imap lfcrlf --echo --baud "$(BAUD)" "$(PORT)"
+else ifeq ($(RIOT_TERMINAL),miniterm.py)
+    export TERMPROG  ?= miniterm.py
+    export TERMFLAGS ?= --eol CRLF "$(PORT)" "$(BAUD)"
 endif

tests/shell/Makefile

@@ -1,4 +1,5 @@
 DEVELHELP=0
+
 include ../Makefile.tests_common
 
 USEMODULE += shell
@@ -12,4 +13,8 @@ BOARD_BLACKLIST += chronos
 
 TEST_ON_CI_WHITELIST += all
 
+ifneq ($(BOARD), native)
+	RIOT_TERMINAL=miniterm.py
+endif
+
 include $(RIOTBASE)/Makefile.include