I/O Device

Estimated reading: 3 minutes 379 views

This is the I/O device configuration used in [Action] -> [I/O Device Control].

Add

Click the [+Add] button.

[Name]

Enter the name of the I/O device. You can use any name.

[I/O Device]

Click [Select] to choose the I/O device to use.

Select the device to use. You can use the search function to quickly find devices.

[Description]

Description of the selected device.

[Type]

Type of the selected device. One of the following types will be displayed: I2C, SPI, UART, 1-WIRE, or ETC.

[Use Default GPIO]

Select whether to use the default GPIO of the controller hardware.

[GPIO Selection]

When not using default GPIO, select the Extended GPIO to use. This is displayed only when [Use Default GPIO] is unchecked.

[Interface]

Select the I2C or SPI communication interface. This is displayed only when using default GPIO and [Type] is “I2C” or “SPI”.

Hardware: Uses hardware I2C or SPI interface. Fast and stable, but can only use dedicated GPIO pins.

Software: Implements I2C or SPI protocol in software (Bit-Banging). Increases CPU load and is relatively slower, but can use any GPIO pin.

Currently, software interface is only available on Raspberry Pi 0~4 GPIO.

[I2C Bus]

Enter the hardware I2C bus number to use. This is displayed only when [Type] is “I2C” and [Interface] is “Hardware”.

The I2C bus number is shown on each hardware’s pin map.
Example) For Raspberry Pi, the I2C bus number is 1.

[I2C Address]

Select or manually enter the I2C address. For manual entry, use hexadecimal format like “0xFF”. This is displayed only when [Type] is “I2C”.

[SDA Pin]

Enter the GPIO number to use as the SDA pin. This is displayed only when [Type] is “I2C” and [Interface] is “Software”.

[SCL Pin]

Enter the GPIO number to use as the SCL pin. This is displayed only when [Type] is “I2C” and [Interface] is “Software”.

[SPI Bus]

Enter the hardware SPI bus number. This is displayed only when [Type] is “SPI” and [Interface] is “Hardware”.

The SPI bus number is shown on each hardware’s pin map.
Example) For Raspberry Pi, the SPI bus number is 0.

[CS (Chip Select)]

Enter the CS (Chip Select) number for hardware SPI. This is displayed only when [Type] is “SPI” and [Interface] is “Hardware”.

[CS Pin]

Enter the GPIO number to use as the CS pin. This is displayed only when [Type] is “SPI” and [Interface] is “Software”.

[SCLK Pin]

Enter the GPIO number to use as the SCLK pin. This is displayed only when [Type] is “SPI” and [Interface] is “Software”.

[MISO Pin]

Enter the GPIO number to use as the MISO pin. This is displayed only when [Type] is “SPI” and [Interface] is “Software”.

[MOSI Pin]

Enter the GPIO number to use as the MOSI pin. This is displayed only when [Type] is “SPI” and [Interface] is “Software”.

[Port]

Enter the serial port name. This is displayed only when [Type] is “UART”.

[1-Wire]

Under construction…

[Initialization Commands]

Initialization commands are the commands required to start the I/O device among the device’s commands. Enter the required values for each command. When the controller enters [RUN mode], the I/O device’s initialization commands are automatically executed to initialize the device.

If you uncheck the initialization command checkbox, that initialization command will not be executed, and you can also execute initialization commands in [Action] -> [I/O Device Control].

Edit

Click the icon of the item you want to edit.

Delete

Click the icon of the item you want to delete.