diff --git a/platformio.ini b/platformio.ini
index 82167f2..40dc89e 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -30,6 +30,7 @@ include_dir = .
 
 [env]
 build_flags = -Wall -Wextra
+monitor_filters = time
 
 [env:samd21-dev-usb]
 platform = atmelsam
@@ -51,6 +52,15 @@ monitor_speed = 115200
 monitor_echo = yes
 build_flags = -std=c++17
 
+[env:Arduino M0]
+platform = atmelsam
+board = mzeroUSB
+framework = arduino
+lib_deps = ${env.lib_deps}
+monitor_speed = 115200
+monitor_echo = yes
+build_flags = -std=c++17  -DI2C_EXTENDED_ADDRESS ; -DI2C_USE_WIRE  -DDIAG_LOOPTIMES -DDIAG_IO
+
 [env:mega2560-debug]
 platform = atmelavr
 board = megaatmega2560
@@ -61,7 +71,7 @@ lib_deps =
 	SPI
 monitor_speed = 115200
 monitor_echo = yes
-build_flags = -DDIAG_IO -DDIAG_LOOPTIMES
+build_flags = -DI2C_EXTENDED_ADDRESS -DDIAG_IO -DDIAG_LOOPTIMES
 
 [env:mega2560-no-HAL]
 platform = atmelavr