add lcov dep

firmware/setup_linux_environment.sh

@@ -23,7 +23,7 @@ git submodule update --init
 sudo apt-get update
 
 # install dependencies
-sudo apt-get install -y build-essential gcc gdb gcc-multilib g++-multilib make openjdk-8-jdk-headless mtools zip xxd libncurses5 libncursesw5 dosfstools
+sudo apt-get install -y build-essential gcc gdb gcc-multilib g++-multilib make openjdk-8-jdk-headless mtools zip xxd libncurses5 libncursesw5 dosfstools lcov
 
 # Allow the current user to use serial ports
 sudo usermod -a -G dialout $USER