Flag Bytes

Byte	Description	7	5	4	3	2	1	0
ser_cfg	Available serial interfaces					WiFi	USR	Loconet
m_stat	General status	SN1_type 0 = SNI 1 = FD1	SN2_text EUSART2 text mode	SN1_text EUSART1 text mode	SN_busy	DCC_EOM3 future	DCC_EOM2 future	DCC_EOM1 future
EP_ctl	Event flags					EPF_ETH message in ERX_buf	EPF_ser message in SIO_buf	EPF_DG DCC generator empty
SN1 (Serial Network 1) uses EUSART1 and may be used with SNI for the Loconet compatible single wire network (SWN) or FD1 for USR TCP232 SN2 (Serial Network 2) uses EUSART2 and is used exclusively with ENI for ESP-01 WiFi Text mode is used while setting up an interface that uses the "AT" commands The SNI driver is half duplex party line type with collision detection, uses SN_busy [EUSART1 only] The FD1 driver is full duplex point to point type with no collision detection or busy control [EUSART1 only] The ENI driver is capable of setting up an ESP-01, after wich is becomes like FD1 [EUSART2 only]