Dear User,getting that kind of (error) message means that the communication with the system is well established, but the device is not powered: please, check that the L99615C has a proper supply (i. e., greater than 14V, even 20V).Best Regards.Nicola...

Ciao KWarr.1,it seems that the problem is due to a wrong UART baudrate setting.Please, cross check the suggested values, so as reported within the source code and the snapshot.Best Regards,Nicola.