make flash SERIAL=/dev/ttyUSB0

[Arduino-Nano-VA-meter] / Makefile

diff --git a/Makefile b/Makefile
index 09e7878..8fe8272 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SERIAL=/dev/ttyUSB0
+SERIAL ?= /dev/ttyUSB0
 
 all: main.hex