MCP2210
3.2.7
GET GPIO CURRENT PIN VALUE
TABLE 3-46: COMMAND STRUCTURE
Byte
Index
Meaning
0
1
0x31 – Get (VM) GPIO Current Pin Value
0x00 – Reserved
2
0x00 – Reserved
3-63
0x00 – Reserved
3.2.7.1
Responses
TABLE 3-47: RESPONSE 1 STRUCTURE
Byte
Index
Meaning
0
1
2
3
4
0x31 – Get (VM) GPIO Current Pin Value – echos back the given command code
0x00 – Command Completed Successfully
Don’t Care
Don’t Care
GPIO Pin Value – 16-bit value (low byte):
• MSB
–
–
–
–
–
–
LSB
GP7VAL GP6VAL GP5VAL GP4VAL GP3VAL GP2VAL GP1VAL GP0VAL
5
GPIO Pin Value – 16-bit value (high byte):
• MSB
x
–
x
–
x
–
x
–
x
–
x
–
x
LSB
GP8VAL
6-63
Don’t Care
Note 1: This command will only have an effect on those GPs previously assigned to a GPIO functionality.
FIGURE 3-18:
GET GPIO CURRENT PIN VALUE LOGIC FLOW
Get RAM GPIO
Value
Response 1
RAM GPIO
Value Retrieved
DS22288A-page 48
2011 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
