xuartns550_hello_world_example.c File Reference

Overview

This file contains a design example using the Uart 16450/550 driver (XUartNs550) and hardware device using polled mode.

Note

None.

MODIFICATION HISTORY:

Ver   Who  Date     Changes



1.00a jhl  05/13/02 First release
1.00a sv   06/08/05 Minor changes to comply to Doxygen and coding guidelines
2.00a ktn  10/20/09 Updated to use HAL processor APIs and minor modifications
              as per coding guidelines.
3.4   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.
3.9   gm   07/09/23 Added SDT support

Functions
int	UartNs550HelloWorldExample (u16 DeviceId)
	This function sends Hello World with the UART 16450/550 device and driver as a design example. More...
int	main (void)
	Main function to call the example. More...

Function Documentation

int main

(

void

)

Main function to call the example.

Returns

• XST_FAILURE if the Test Failed.
• A non-negative number indicating the number of characters sent.

Note

None.

References UartNs550HelloWorldExample().

int UartNs550HelloWorldExample

(

u16

DeviceId

)

This function sends Hello World with the UART 16450/550 device and driver as a design example.

The purpose of this function is to illustrate how to use the XUartNs550 driver.

This function polls the UART and does not require the use of interrupts.

Parameters

DeviceId

is the XPAR_<UARTNS550_instance>_DEVICE_ID value from xparameters.h

Returns

• XST_FAILURE if the UART driver could not be initialized successfully.
• A non-negative number indicating the number of characters sent.

Note

None.

References XUartNs550_Initialize(), and XUartNs550_Send().

Referenced by main().