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USB Serial Port connection From GhostBSD / FreeBSD 13.1 to Raspberry Pi 4B hardware, through the Black Magic Probe virtual USB serial port to 3.3V ttl level

  USB Serial Port connection From GhostBSD / FreeBSD 13.1 to Raspberry Pi 4B hardware, through the Black Magic Probe virtual USB serial port to 3.3V ttl level   Open a MATE terminal or Xterm terminal  from Applications  -->  System Tools --> MATE terminal Check pstat -t  to see what devices are available  pstat -t       LINE   INQ  CAN  LIN  LOW  OUTQ  USE  LOW   COL  SESS  PGID STATE      ttyu2 23040    0    0 2304 23064    0 2307    11     0     0 ICOiX      ttyv0  1920    0    0  192  1984    0  199   625  4081  4081 Oicl      ttyv1  1920    0    0  192  1984  ...