166 lines
6 KiB
C
166 lines
6 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002 - 2014 Xilinx, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
|
* in the Software without restriction, including without limitation the rights
|
||
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
|
* furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* Use of the Software is limited solely to applications:
|
||
|
|
* (a) running on a Xilinx device, or
|
||
|
|
* (b) that interact with a Xilinx device through a bus or interconnect.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
|
||
|
|
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
* SOFTWARE.
|
||
|
|
*
|
||
|
|
* Except as contained in this notice, the name of the Xilinx shall not be used
|
||
|
|
* in advertising or otherwise to promote the sale, use or other dealings in
|
||
|
|
* this Software without prior written authorization from Xilinx.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
/*****************************************************************************/
|
||
|
|
/**
|
||
|
|
* @file xgpio_extra.c
|
||
|
|
*
|
||
|
|
* The implementation of the XGpio driver's advanced discrete functions.
|
||
|
|
* See xgpio.h for more information about the driver.
|
||
|
|
*
|
||
|
|
* @note
|
||
|
|
*
|
||
|
|
* These APIs can only be used if the GPIO_IO ports in the IP are used for
|
||
|
|
* connecting to the external output ports.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* <pre>
|
||
|
|
* MODIFICATION HISTORY:
|
||
|
|
*
|
||
|
|
* Ver Who Date Changes
|
||
|
|
* ----- ---- -------- -----------------------------------------------
|
||
|
|
* 1.00a rmm 02/04/02 First release
|
||
|
|
* 2.00a jhl 12/16/02 Update for dual channel and interrupt support
|
||
|
|
* 2.11a mta 03/21/07 Updated to new coding style
|
||
|
|
* 3.00a sv 11/21/09 Updated to use HAL Processor APIs. Renamed the macros
|
||
|
|
* XGpio_mWriteReg to XGpio_WriteReg, and XGpio_mReadReg
|
||
|
|
* to XGpio_ReadReg.
|
||
|
|
* </pre>
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
/***************************** Include Files ********************************/
|
||
|
|
|
||
|
|
#include "xgpio.h"
|
||
|
|
#include "xgpio_i.h"
|
||
|
|
|
||
|
|
/************************** Constant Definitions ****************************/
|
||
|
|
|
||
|
|
/**************************** Type Definitions ******************************/
|
||
|
|
|
||
|
|
/***************** Macros (Inline Functions) Definitions ********************/
|
||
|
|
|
||
|
|
/************************** Variable Definitions ****************************/
|
||
|
|
|
||
|
|
/************************** Function Prototypes *****************************/
|
||
|
|
|
||
|
|
|
||
|
|
/****************************************************************************/
|
||
|
|
/**
|
||
|
|
* Set output discrete(s) to logic 1 for the specified GPIO channel.
|
||
|
|
*
|
||
|
|
* @param InstancePtr is a pointer to an XGpio instance to be worked on.
|
||
|
|
* @param Channel contains the channel of the GPIO (1 or 2) to operate on.
|
||
|
|
* @param Mask is the set of bits that will be set to 1 in the discrete
|
||
|
|
* data register. All other bits in the data register are
|
||
|
|
* unaffected.
|
||
|
|
*
|
||
|
|
* @return None.
|
||
|
|
*
|
||
|
|
* @note
|
||
|
|
*
|
||
|
|
* The hardware must be built for dual channels if this function is used
|
||
|
|
* with any channel other than 1. If it is not, this function will assert.
|
||
|
|
*
|
||
|
|
* This API can only be used if the GPIO_IO ports in the IP are used for
|
||
|
|
* connecting to the external output ports.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
void XGpio_DiscreteSet(XGpio * InstancePtr, unsigned Channel, u32 Mask)
|
||
|
|
{
|
||
|
|
u32 Current;
|
||
|
|
unsigned DataOffset;
|
||
|
|
|
||
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
||
|
|
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
|
||
|
|
Xil_AssertVoid((Channel == 1) ||
|
||
|
|
((Channel == 2) && (InstancePtr->IsDual == TRUE)));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Calculate the offset to the data register of the GPIO once
|
||
|
|
*/
|
||
|
|
DataOffset = ((Channel - 1) * XGPIO_CHAN_OFFSET) + XGPIO_DATA_OFFSET;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Read the contents of the data register, merge in Mask and write
|
||
|
|
* back results
|
||
|
|
*/
|
||
|
|
Current = XGpio_ReadReg(InstancePtr->BaseAddress, DataOffset);
|
||
|
|
Current |= Mask;
|
||
|
|
XGpio_WriteReg(InstancePtr->BaseAddress, DataOffset, Current);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/****************************************************************************/
|
||
|
|
/**
|
||
|
|
* Set output discrete(s) to logic 0 for the specified GPIO channel.
|
||
|
|
*
|
||
|
|
* @param InstancePtr is a pointer to an XGpio instance to be worked on.
|
||
|
|
* @param Channel contains the channel of the GPIO (1 or 2) to operate on.
|
||
|
|
* @param Mask is the set of bits that will be set to 0 in the discrete
|
||
|
|
* data register. All other bits in the data register are
|
||
|
|
* unaffected.
|
||
|
|
*
|
||
|
|
* @return None.
|
||
|
|
*
|
||
|
|
* @note
|
||
|
|
*
|
||
|
|
* The hardware must be built for dual channels if this function is used
|
||
|
|
* with any channel other than 1. If it is not, this function will assert.
|
||
|
|
*
|
||
|
|
* This API can only be used if the GPIO_IO ports in the IP are used for
|
||
|
|
* connecting to the external output ports.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
void XGpio_DiscreteClear(XGpio * InstancePtr, unsigned Channel, u32 Mask)
|
||
|
|
{
|
||
|
|
u32 Current;
|
||
|
|
unsigned DataOffset;
|
||
|
|
|
||
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
||
|
|
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
|
||
|
|
Xil_AssertVoid((Channel == 1) ||
|
||
|
|
((Channel == 2) && (InstancePtr->IsDual == TRUE)));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Calculate the offset to the data register of the GPIO once
|
||
|
|
*/
|
||
|
|
DataOffset = ((Channel - 1) * XGPIO_CHAN_OFFSET) + XGPIO_DATA_OFFSET;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Read the contents of the data register, merge in Mask and write
|
||
|
|
* back results
|
||
|
|
*/
|
||
|
|
Current = XGpio_ReadReg(InstancePtr->BaseAddress, DataOffset);
|
||
|
|
Current &= ~Mask;
|
||
|
|
XGpio_WriteReg(InstancePtr->BaseAddress, DataOffset, Current);
|
||
|
|
}
|