7.1.3 GPIO_Read Command and its Response

The GPIO_Read command (0x68) reads the logic state of the specified GPIO pin.

This command is sent through Endpoint 0x04 (OUT). The response is read through Endpoint 0x84 (IN).

Table 7-6. `GPIO_Read` - Command
Byte Index	Command		Description
0	`0x68`	Command code	Reads the specified GPIO pin and returns the state
1	`0x00` `0x10` `0x20` `0x30` `0x40` `0x50`	GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5	GPIO pin

Table 7-7. `GPIO_Read` - Response
Byte Index	Response		Description
0	`0x68`	Returns the command code	Returns whether the `GPIO_Read` command was accepted along with the pin state
1	`0x21` `0x60`	Accepted - success Rejected – not a GPIO pin .	Accepted, and the pin is read. Rejected because the selected pin is not configured as a GPIO.
2	`0x00` `0x01`	The GPIO pin state is LOW. The GPIO pin state is HIGH.	The GPIO pin state