Overview

This file contains a design example using the AXI GPIO driver (XGpio) and hardware device.

It only uses channel 1 of a GPIO device and assumes that the bit 0 of the GPIO is connected to the LED on the HW board.

MODIFICATION HISTORY:

Ver   Who  Date     Changes



1.00a rmm  03/13/02 First release
1.00a rpm  08/04/03 Removed second example and invalid macro calls
2.00a jhl  12/15/03 Added support for dual channels
2.00a sv   04/20/05 Minor changes to comply to Doxygen and coding guidelines
3.00a ktn  11/20/09 Minor changes as per coding guidelines.
4.1   lks  11/18/15 Updated to use canonical xparameters and
              clean up of the comments and code for CR 900381
4.3   sk   09/29/16 Modified the example to make it work when LED_bits are
                    configured as an output. CR# 958644
      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 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 driver to turn on and off an LED.

Returns: XST_FAILURE to indicate that the GPIO Initialization had failed.

Note: This function will not return if the test is running.

References XGpio_DiscreteClear(), XGpio_DiscreteWrite(), XGpio_Initialize(), and XGpio_SetDataDirection().

Overview

Functions

Function Documentation