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-rw-r--r--esp8266/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/esp8266/Makefile b/esp8266/Makefile
index 62f1d2a20d..c83640fb78 100644
--- a/esp8266/Makefile
+++ b/esp8266/Makefile
@@ -9,7 +9,7 @@ include ../py/py.mk
MAKE_FROZEN = ../tools/make-frozen.py
SCRIPTDIR = scripts
-PORT = /dev/ttyACM0
+PORT ?= /dev/ttyACM0
BAUD = 115200
CROSS_COMPILE = xtensa-lx106-elf-
ESP_SDK = $(shell $(CC) -print-sysroot)/usr