USB-I/O Interface Adapter GPIO-24. Programmer's Reference Manual.
3.2. GPIO_EV_DEVICE_REMOVED (0x81)
Table of Contents
Every GPIO-24 adapter has such parameters as a serial number, ID and version of the adapter firmware. If your fixture consists of several GPIO-24 adapters, you can use ID and serial number to distinguish between one adapter and another.
Device identification commands are used:
to retrieve the version of the GPIO-24 adapter firmware (GPIO_GET_FW_VER);
to retrieve the serial number of the GPIO-24 adapter (GPIO_GET_SN);
to set and retrieve ID of the GPIO-24 adapter (GPIO_SET_DEV_ID and GPIO_GET_DEV_ID).
There is also a number of commands which are used to configure the GPIO-24 adapter and to retrieve the configuration.
Device configuration commands can be used:
to configure pins of a specific GPIO port for input, output and PWM (GPIO_SET_CFG);
to retrieve configuration settings for all pins of particular GPIO port or for any chosen
I/Opin (GPIO_GET_CFG and GPIO_GET_PIN_CFG);to save the configuration settings into internal GPIO-24 adapter EEPROM memory (GPIO_SAVE_CFG_EEPROM);
to clear previously saved configuration settings from the GPIO-24 adapter internal EEPROM memory (GPIO_CLR_CFG_EEPROM).
The values for all 24 GPIO pins can be retrieved with GPIO_GET_VAL command.
Use GPIO_GET_VDD command to retrieve the GPIO-24 adapter supply voltage.
