Interfaces with GL-MiFI Power monitoring MCU with a soft UART\\ and provides Battery SOC, Temperature and charging data at\\ /proc/gl_mifi_mcu. \\ This feature is supported from GL-MiFi PCB revision v2.6.2.\\ The content of /proc/gl_mifi_mcu is JSON as received from the\\ UART and will frequenty contain corrupted data due to soft UART\\ unreliability. User application must validate the data.\\ \\