Microchip Technology ADM00421 Data Sheet
MCP2210
DS22288A-page 48
2011 Microchip Technology Inc.
3.2.7
GET GPIO CURRENT PIN VALUE
3.2.7.1
Responses
FIGURE 3-18:
GET GPIO CURRENT PIN VALUE LOGIC FLOW
TABLE 3-46:
COMMAND STRUCTURE
Byte
Index
Meaning
0
0x31 – Get (VM) GPIO Current Pin Value
1
0x00 – Reserved
2
0x00 – Reserved
3-63
0x00 – Reserved
TABLE 3-47:
RESPONSE 1 STRUCTURE
Byte
Index
Meaning
0
0x31 – Get (VM) GPIO Current Pin Value – echos back the given command code
1
0x00 – Command Completed Successfully
2
Don’t Care
3
Don’t Care
4
GPIO Pin Value – 16-bit value (low byte):
• MSB – – – – – – LSB
• MSB – – – – – – LSB
GP7VAL GP6VAL GP5VAL GP4VAL GP3VAL GP2VAL GP1VAL GP0VAL
5
GPIO Pin Value – 16-bit value (high byte):
• MSB – – – – – – LSB
• MSB – – – – – – LSB
x x x x x x x GP8VAL
6-63
Don’t Care
Note 1:
This command will only have an effect on those GPs previously assigned to a GPIO functionality.
Get RAM GPIO
Value
Response 1
RAM GPIO
Value Retrieved