Lantronix MatchPort b/g MatchPort b/g - User Guide - Page 79

Examples, Command 1Ah, Set Active Levels, Set States

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7: Configurable Pins Command 1Ah, Set Active Levels Send: 2 parameters 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: 2 parameters 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 -> MatchPort: 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h MatchPort -> PC: 10h, 03h, 00h, 00h, 00h Command details: 10h = command 10h 00h, 00h, 00h, 00h = ignored 00h, 00h, 00h, 00h = ignored Response details: 10h = response to command 10h 03h, 00h, 00h, 00h = bits 0 and 1 are 1→CP0 and CP1 are configured as GPIOs (GPIO0, GPIO1). bits 2 to 7 are 0 → configured for a special function and are unavailable for control or monitoring by the user. MatchPort User Guide 79

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7: Configurable Pins
Command 1Ah, Set Active Levels
Send:
2 parameters
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:
2 parameters
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 -> MatchPort: 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
MatchPort -> PC: 10h, 03h, 00h, 00h, 00h
Command details:
10h = command 10h
00h, 00h, 00h, 00h = ignored
00h, 00h, 00h, 00h = ignored
Response details:
10h = response to command 10h
03h, 00h, 00h, 00h
=
bits 0 and 1 are 1
→
CP0 and CP1 are configured as GPIOs (GPIO0, GPIO1).
bits 2 to 7 are 0
→
configured for a special function and are unavailable for
control or monitoring by the user.
MatchPort User Guide
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