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-rw-r--r--arduino-mk/Arduino.mk6
1 files changed, 5 insertions, 1 deletions
diff --git a/arduino-mk/Arduino.mk b/arduino-mk/Arduino.mk
index 1862548..f3584ae 100644
--- a/arduino-mk/Arduino.mk
+++ b/arduino-mk/Arduino.mk
@@ -1011,7 +1011,11 @@ ifndef AVRDUDE_ISP_FUSES_POST
endif
endif
-AVRDUDE_ISP_OPTS = -c $(ISP_PROG) -b $(AVRDUDE_ISP_BAUDRATE) -P $(call get_isp_port)
+AVRDUDE_ISP_OPTS = -c $(ISP_PROG) -b $(AVRDUDE_ISP_BAUDRATE)
+
+ifneq ($(strip $(ISP_PROG)),usbasp)
+ AVRDUDE_ISP_OPTS += -P $(call get_isp_port)
+endif
ifndef ISP_EEPROM
ISP_EEPROM = 0