Target Support Package™ TC2

C281x GPIO Digital Input - General-purpose I/O pins for digital input

Library

c281xdspchiplib in Target Support Package TC2 software

Description

This block configures the general-purpose I/O (GPIO) registers that control the GPIO shared pins for digital input. Each I/O port has one MUX register, which is used to select peripheral operation or digital I/O operation.

Dialog Box

IO Port

Select the input/output port to use: GPIOPA, GPIOPB, GPIOPD, GPIOPE, GPIOPF, or GPIOPG and select the I/O Port bits to enable for digital input. (There is no GPIOPC port on the C281x.) If you select multiple bits, vector input is expected. Cleared bits are available for peripheral functionality. Multiple GPIO DI blocks cannot share the same I/O port.

Note   The input function of the digital I/O and the input path to the related peripheral are always enabled on the board. If you configure a pin as digital I/O, the corresponding peripheral function cannot be used.

The following tables show the shared pins.

GPIO A MUX

GPIO B MUX

Sample time

Time interval, in seconds, between consecutive input from the pins.

Data type

Data type of the data to obtain from the GPIO pins. The data is read as 16-bit integer data and then cast to the selected data type. Valid data types are auto, double, single, int8, uint8, int16, uint16, int32, uint32 or boolean.

Note   The width of the vectorized data output by this block is determined by the number of bits selected in the Block Parameters dialog box.

See Also

C281x GPIO Digital Output

C281x eCAN Transmit

C281x GPIO Digital Output