Set Handshake Direction Control
serial.setdir(portn, dtr, rts)
| Parameter | Type | Description |
|---|---|---|
portn |
integer | Port number 1-4 |
dtr |
integer | Direction control for DTR line |
rts |
integer | Direction control for RTS line |
| Direct control value | TX mode | RX mode |
|---|---|---|
| 0 | - | - |
| 1 | Asserted | Unasserted |
| -1 | Unasserted | Asserted |