<p><b>@kaspar030</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11449#discussion_r291522883">boards/common/esp32/Makefile.include</a>:</p>
<pre style='color:#555'>> @@ -8,4 +8,10 @@ PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*)))
 include $(RIOTMAKE)/tools/serial.inc.mk
 
 # reset tool configuration
-export RESET = esptool.py --before default_reset run
+ifeq (1,$(ESP_RESET_DTRTOGGLE))
+  # use dtr tool from https://github.com/kaspar030/rtsdtr for reset
+  # used by Murdock
+  export RESET = dtr $(PORT) 0 && dtr $(PORT) 1
+else
+  export RESET ?= esptool.py --before default_reset run
</pre>
<p>Ideally local testing is not much different from what murdock does. And for Murdock, spawning python is <em>slow</em>. We should maybe just integrate the (5 line) c tool into the RIOT repo.</p>

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