MCP2210
3.2.5
GET (VM) GPIO CURRENT PIN DIRECTION
TABLE 3-42: COMMAND STRUCTURE
Byte
Index
Meaning
0
1
0x33 – Get (VM) GPIO Current Pin Direction
0x00 – Reserved
2
0x00 – Reserved
3-63
0x00 – Reserved
3.2.5.1
Responses
TABLE 3-43: RESPONSE 1 STRUCTURE
Byte
Index
Meaning
0
1
2
3
4
0x33 – Get (VM) GPIO Current Pin Direction – echos back the given command code
0x00 – Command Completed Successfully
Don’t Care
Don’t Care
GPIO Direction – 16-bit value (low byte):
• MSB
–
–
–
–
–
–
LSB
GP7DIR GP6DIR GP5DIR GP4DIR GP3DIR GP2DIR GP1DIR GP0DIR
5
GPIO Direction – 16-bit value (high byte):
• MSB
x
–
x
–
x
–
x
–
x
–
x
–
x
LSB
GP8DIR
6-63
Don’t Care
Note 1: This command will only have an effect on those GPs previously configured as GPIOs.
FIGURE 3-16:
GET (VM) GPIO CURRENT PIN DIRECTION LOGIC FLOW
Get RAM GPIO
Direction
Response 1
RAM GPIO
Direction
Retrieved
DS22288A-page 46
2011 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
