Lantronix 900-618 manual Examples, Command 19h, Set Directions, Command 1Ah, Set Active Levels

9: GPIO Interface

Command 19h, Set Directions

Send:

2parameters Bytes 1-4: Mask

Bit X 1 means the direction for GPIO X will be updated with the value in the second parameter.

0 means the direction for that GPIO will not change. Bytes 5-8: New Directions

Bit X 1 means GPIO X will become an output.

0 means it will become an input.

Response:

1 parameter

Bytes 1-4: The updated directions

Command 1Ah, Set Active Levels

Send:

2parameters Bytes 1-4: Mask

Bit X 1 means the direction for GPIO X will be updated with the value in the second parameter.

0 means the active type for that GPIO will not change. Bytes 5-8: New Active Levels

Bit X 1 means GPIO X will become active low.

0 means it will become active high.

Response:

1 parameter

Bytes 1-4: Updated active levels

Command 1Bh, Set States

Send:

2parameters Bytes 1-4: Mask

Bit X 1 means the state for GPIO X will be updated with the value in the second parameter.

0 means the state for that GPIO will not change. Bytes 5-8: New States

Bit X 1 means GPIO X will become active.

0 means it will become inactive.

Response:

1 parameter

Bytes 1-4: Updated states

Examples

Example 1: PC sends command 10h to find out which configurable pins are available as GPIO.

PC -> xPico: 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h

xPico -> PC: 10h, 03h, 00h, 00h, 00h

Command details:

xPico User Guide 65