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

Library

Embedded Coder/ Embedded Targets/ Processors/ Texas Instruments C2000/ C281x

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.

Note   To avoid losing any new settings, click Apply before changing the IO Port parameter.

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

Bit	Peripheral Name (Bit =1)	GPIO Name (Bit = 0)
0	PWM1	GPIOA0
1	PWM2	GPIOA1
2	PWM3	GPIOA2
3	PWM4	GPIOA3
4	PWM5	GPIOA4
5	PWM6	GPIOA5
8	QEP1/CAP1	GPIOA8
9	QEP2/CAP2	GPIOA9
10	CAP3	GPIOA10

GPIO B MUX

Bit	Peripheral Name (Bit =1)	GPIO Name (Bit = 0)
0	PWM7	GPIOB0
1	PWM8	GPIOB1
2	PWM9	GPIOB2
3	PWM10	GPIOB3
4	PWM11	GPIOB4
5	PWM12	GPIOB5
8	QEP3/CAP4	GPIOB8
9	QEP4/CAP5	GPIOB9
10	CAP6	GPIOB10

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

GPIO

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