-O2 flag in esp32 test

pack_results.sh

+#!/bin/bash
+zip results.zip build/*/*.log measurements/* compile_all.log compile_all.err.log build/test_all.sh

templates/esp32/platformio.ini

@@ -2,3 +2,5 @@
 platform = espressif32
 framework = arduino
 board = esp32dev
+build_flags = -O2
+build_unflags = -Os

test.py

@@ -137,7 +137,7 @@ def begin_measurement():
     import saleae
     import time
     sal = saleae.Saleae()
-    sal.set_active_channels([0, 1, 2, 3], [])
+    sal.set_active_channels([1, 2], [])
     sal.set_sample_rate(sal.get_all_sample_rates()[0])
     sal.set_capture_seconds(6000)
     sal.capture_start()