Datasheet

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
00x31 – Get (VM) GPIO Current Pin Value – echos back the given command code
10x00 – Command Completed Successfully
2 Don’t Care
3 Don’t Care
4 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 – – – – – – 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