Dear Gustavo, Do you have a plan to split ERTM code into a separate file? It may be easier to read/learn ERTM mechanism with loosely coupled code for people. Thank you! â Regards Haijun Skype: liu.haijun ÿô.nÇ·®+%˱é¥wÿº{.nÇ·¥{±ý¶â^nr¡öë¨è&£ûz¹Þúzf£¢·h§~Ûÿÿïÿê_èæ+v¨þ)ßø