2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
107 lines
4.2 KiB
C
Executable file
107 lines
4.2 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2002 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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* @file xgpio_selftest.c
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*
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* The implementation of the XGpio driver's self test function.
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* See xgpio.h for more information about the driver.
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*
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* @note
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*
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* None
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.00a rmm 02/04/02 First release
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* 2.00a jhl 01/13/04 Addition of dual channels and interrupts.
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* 2.11a mta 03/21/07 Updated to new coding style
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* 3.00a sv 11/21/09 Updated to use HAL Processor APIs.
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xgpio.h"
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/************************** Constant Definitions ****************************/
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/**************************** Type Definitions ******************************/
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/***************** Macros (Inline Functions) Definitions ********************/
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/************************** Variable Definitions ****************************/
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/************************** Function Prototypes *****************************/
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/******************************************************************************/
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/**
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* Run a self-test on the driver/device. This function does a minimal test
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* in which the data register is read. It only does a read without any kind
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* of test because the hardware has been parameterized such that it may be only
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* an input such that the state of the inputs won't be known.
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*
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* All other hardware features of the device are not guaranteed to be in the
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* hardware since they are parameterizable.
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*
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*
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* @param InstancePtr is a pointer to the XGpio instance to be worked on.
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* This parameter must have been previously initialized with
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* XGpio_Initialize().
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*
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* @return XST_SUCCESS always. If the GPIO device was not present in the
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* hardware a bus error could be generated. Other indicators of a
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* bus error, such as registers in bridges or buses, may be
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* necessary to determine if this function caused a bus error.
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*
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* @note None.
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*
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******************************************************************************/
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int XGpio_SelfTest(XGpio * InstancePtr)
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{
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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/*
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* Read from the data register of channel 1 which is always guaranteed
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* to be in the hardware device. Since the data may be configured as
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* all inputs, there is not way to guarantee the value read so don't
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* test it.
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*/
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(void) XGpio_DiscreteRead(InstancePtr, 1);
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return (XST_SUCCESS);
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}
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