Overview

This file contains a design example using the General Purpose I/O (GPIO) low level driver and hardware device.

It only uses a channel 1 of a GPIO device.

MODIFICATION HISTORY:

Ver   Who  Date  Changes



1.00b jhl  04/29/02 First release
2.00a jhl  12/30/02 Addition of dual channel capability
2.00a sv   04/18/05 Minor changes to comply to Doxygen and coding guidelines
3.00a ktn  11/21/09 Removed the macros XGpio_mSetDataDirection,
              XGpio_mGetDataReg and XGpio_mSetDataReg. Users
              should use XGpio_WriteReg/XGpio_ReadReg to achieve the
              same functionality.
4.1   lks  11/18/15 Updated to use canonical xparameters and
              clean up of the comments and code for CR 900381
4.3   ms   01/23/17 Added xil_printf statement in main function to
                    ensure that "Successfully ran" and "Failed" strings
                    are available in all examples. This is a fix for
                    CR-965028.
4.5   sne  06/12/19 Fixed IAR compiler warning.
4.10  gm   07/11/23 Added SDT support.

Functions
int	main (void)
	The purpose of this function is to illustrate how to use the GPIO low level driver to turn on and off an LED. More...

Function Documentation

int main ( void )

The purpose of this function is to illustrate how to use the GPIO low level driver to turn on and off an LED.

Returns: Always 0

Note: The main function is returning an integer to prevent compiler warnings.

References XGPIO_CHAN_OFFSET, XGPIO_DATA_OFFSET, XGpio_ReadReg, XGPIO_TRI_OFFSET, and XGpio_WriteReg.

Overview

Functions

Function Documentation