2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
744 lines
24 KiB
C
Executable file
744 lines
24 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2011 - 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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*
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* @file xiomodule_uart_intr.c
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*
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* Contains required functions for the XIOModule UART driver interrupt mode.
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* See the xiomodule.h header file for more details on this driver.
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*
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* This file also contains interrupt-related functions for the UART.
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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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* 1.03a sa 10/16/12 First release
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xil_assert.h"
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#include "xiomodule.h"
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#include "xiomodule_i.h"
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#include "xiomodule_l.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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/************************** Function Prototypes *****************************/
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static void ReceiveDataHandler(XIOModule *InstancePtr);
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static void SendDataHandler(XIOModule *InstancePtr);
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/************************** Variable Definitions ****************************/
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typedef void (*Handler)(XIOModule *InstancePtr);
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/****************************************************************************/
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/**
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*
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* This functions sends the specified buffer of data using the UART in either
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* polled or interrupt driven modes. This function is non-blocking such that it
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* will return before the data has been sent by the UART. If the UART is busy
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* sending data, it will return and indicate zero bytes were sent.
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*
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* In a polled mode, this function will only send as much data as the UART can
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* buffer in the transmitter. The application may need to call it repeatedly to
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* send a buffer.
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*
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* In interrupt mode, this function will start sending the specified buffer and
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* then the interrupt handler of the driver will continue sending data until the
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* buffer has been sent. A callback function, as specified by the application,
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* will be called to indicate the completion of sending the buffer.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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* @param DataBufferPtr is pointer to a buffer of data to be sent.
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* @param NumBytes contains the number of bytes to be sent. A value of
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* zero will stop a previous send operation that is in progress
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* in interrupt mode. Any data that was already put into the
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* transmit FIFO will be sent.
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*
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* @return The number of bytes actually sent.
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*
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* @note The number of bytes is not asserted so that this function may
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* be called with a value of zero to stop an operation that is
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* already in progress.
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*
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******************************************************************************/
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unsigned int XIOModule_Send(XIOModule *InstancePtr, u8 *DataBufferPtr,
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unsigned int NumBytes)
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{
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unsigned int BytesSent;
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u32 StatusRegister;
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/*
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* Assert validates the input arguments
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*/
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(DataBufferPtr != NULL);
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Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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Xil_AssertNonvoid(((signed)NumBytes) >= 0);
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/*
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* Enter a critical region by disabling the UART interrupts to allow
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* this call to stop a previous operation that may be interrupt driven.
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*/
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StatusRegister = InstancePtr->CurrentIER;
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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StatusRegister & 0xFFFFFFF8);
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/*
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* Setup the specified buffer to be sent by setting the instance
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* variables so it can be sent with polled or interrupt mode
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*/
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InstancePtr->SendBuffer.RequestedBytes = NumBytes;
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InstancePtr->SendBuffer.RemainingBytes = NumBytes;
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InstancePtr->SendBuffer.NextBytePtr = DataBufferPtr;
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/*
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* Restore the interrupt enable register to it's previous value such
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* that the critical region is exited.
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* This is done here to minimize the amount of time the interrupt is
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* disabled since there is only one interrupt and the receive could
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* be filling up while interrupts are blocked.
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*/
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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(InstancePtr->CurrentIER & 0xFFFFFFF8) | (StatusRegister & 0x7));
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/*
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* Send the buffer using the UART and return the number of bytes sent
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*/
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BytesSent = XIOModule_SendBuffer(InstancePtr);
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return BytesSent;
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}
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/****************************************************************************/
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/**
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*
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* This function will attempt to receive a specified number of bytes of data
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* from the UART and store it into the specified buffer. This function is
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* designed for either polled or interrupt driven modes. It is non-blocking
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* such that it will return if no data has already received by the UART.
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*
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* In a polled mode, this function will only receive as much data as the UART
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* can buffer in the receiver. The application may need to call it repeatedly to
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* receive a buffer. Polled mode is the default mode of operation for the driver.
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*
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* In interrupt mode, this function will start receiving and then the interrupt
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* handler of the driver will continue receiving data until the buffer has been
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* received. A callback function, as specified by the application, will be called
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* to indicate the completion of receiving the buffer or when any receive errors
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* or timeouts occur.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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* @param DataBufferPtr is pointer to buffer for data to be received into.
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* @param NumBytes is the number of bytes to be received. A value of zero
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* will stop a previous receive operation that is in progress in
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* interrupt mode.
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*
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* @return The number of bytes received.
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*
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* @note The number of bytes is not asserted so that this function
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* may be called with a value of zero to stop an operation
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* that is already in progress.
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*
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*****************************************************************************/
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unsigned int XIOModule_Recv(XIOModule *InstancePtr, u8 *DataBufferPtr,
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unsigned int NumBytes)
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{
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unsigned int ReceivedCount;
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u32 StatusRegister;
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/*
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* Assert validates the input arguments
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*/
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(DataBufferPtr != NULL);
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Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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Xil_AssertNonvoid(((signed)NumBytes) >= 0);
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/*
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* Enter a critical region by disabling all the UART interrupts to allow
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* this call to stop a previous operation that may be interrupt driven
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*/
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StatusRegister = InstancePtr->CurrentIER;
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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StatusRegister & 0xFFFFFFF8);
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/*
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* Setup the specified buffer to be received by setting the instance
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* variables so it can be received with polled or interrupt mode
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*/
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InstancePtr->ReceiveBuffer.RequestedBytes = NumBytes;
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InstancePtr->ReceiveBuffer.RemainingBytes = NumBytes;
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InstancePtr->ReceiveBuffer.NextBytePtr = DataBufferPtr;
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/*
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* Restore the interrupt enable register to it's previous value such
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* that the critical region is exited
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*/
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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(InstancePtr->CurrentIER & 0xFFFFFFF8) | (StatusRegister & 0x7));
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/*
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* Receive the data from the UART and return the number of bytes
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* received. This is done here to minimize the amount of time the
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* interrupt is disabled.
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*/
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ReceivedCount = XIOModule_ReceiveBuffer(InstancePtr);
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return ReceivedCount;
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}
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/****************************************************************************/
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/**
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*
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* This function does nothing, since the UART doesn't have any FIFOs. It is
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* included for compatibility with the UART Lite driver.
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*
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* @param InstancePtr is a pointer to the XIOModule instance .
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*
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* @return None.
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*
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* @note None.
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*
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*****************************************************************************/
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void XIOModule_ResetFifos(XIOModule *InstancePtr)
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{
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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}
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/****************************************************************************/
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/**
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*
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* This function determines if the specified UART is sending data. If the
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* transmitter register is not empty, it is sending data.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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*
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* @return A value of TRUE if the UART is sending data, otherwise FALSE.
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*
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* @note None.
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*
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*****************************************************************************/
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int XIOModule_IsSending(XIOModule *InstancePtr)
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{
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u32 StatusRegister;
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/*
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* Assert validates the input arguments
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*/
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Xil_AssertNonvoid(InstancePtr != NULL);
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/*
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* Read the status register to determine if the transmitter is empty
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*/
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StatusRegister = XIOModule_ReadReg(InstancePtr->BaseAddress,
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XUL_STATUS_REG_OFFSET);
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/*
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* If the transmitter is not empty then indicate that the UART is still
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* sending some data
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*/
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return ((StatusRegister & XUL_SR_TX_FIFO_FULL) == XUL_SR_TX_FIFO_FULL);
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}
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/****************************************************************************/
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/**
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*
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* This function sends a buffer that has been previously specified by setting
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* up the instance variables of the instance. This function is designed to be
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* an internal function for the XIOModule component such that it may be called
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* from a shell function that sets up the buffer or from an interrupt handler.
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*
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* This function sends the specified buffer of data to the UART in either
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* polled or interrupt driven modes. This function is non-blocking such that
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* it will return before the data has been sent by the UART.
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*
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* In a polled mode, this function will only send as much data as the UART can
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* buffer in the transmitter. The application may need to call it repeatedly to
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* send a buffer.
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*
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* In interrupt mode, this function will start sending the specified buffer and
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* then the interrupt handler of the driver will continue until the buffer
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* has been sent. A callback function, as specified by the application, will
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* be called to indicate the completion of sending the buffer.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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*
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* @return NumBytes is the number of bytes actually sent (put into the
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* UART transmitter and/or FIFO).
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*
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* @note None.
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*
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*****************************************************************************/
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unsigned int XIOModule_SendBuffer(XIOModule *InstancePtr)
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{
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unsigned int SentCount = 0;
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u8 StatusRegister;
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u8 IntrEnableStatus;
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/*
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* Read the status register to determine if the transmitter is full
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*/
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StatusRegister = XIOModule_GetStatusReg(InstancePtr->BaseAddress);
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/*
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* Enter a critical region by disabling all the UART interrupts to allow
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* this call to stop a previous operation that may be interrupt driven
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*/
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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StatusRegister & 0xFFFFFFF8);
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/*
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* Save the status register contents to restore the interrupt enable
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* register to it's previous value when that the critical region is
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* exited
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*/
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IntrEnableStatus = StatusRegister;
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/*
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* Fill the FIFO from the the buffer that was specified
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*/
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while (((StatusRegister & XUL_SR_TX_FIFO_FULL) == 0) &&
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(SentCount < InstancePtr->SendBuffer.RemainingBytes)) {
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XIOModule_WriteReg(InstancePtr->BaseAddress,
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XUL_TX_OFFSET,
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InstancePtr->SendBuffer.NextBytePtr[
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SentCount]);
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SentCount++;
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StatusRegister =
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XIOModule_GetStatusReg(InstancePtr->BaseAddress);
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}
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/*
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* Update the buffer to reflect the bytes that were sent from it
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*/
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InstancePtr->SendBuffer.NextBytePtr += SentCount;
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InstancePtr->SendBuffer.RemainingBytes -= SentCount;
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/*
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* Increment associated counters
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*/
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InstancePtr->Uart_Stats.CharactersTransmitted += SentCount;
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/*
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* Restore the interrupt enable register to it's previous value such
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* that the critical region is exited
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*/
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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(InstancePtr->CurrentIER & 0xFFFFFFF8) | (IntrEnableStatus & 0x7));
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/*
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* Return the number of bytes that were sent, althought they really were
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* only put into the FIFO, not completely sent yet
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*/
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return SentCount;
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}
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/****************************************************************************/
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/**
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*
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* This function receives a buffer that has been previously specified by setting
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* up the instance variables of the instance. This function is designed to be
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* an internal function for the XIOModule component such that it may be called
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* from a shell function that sets up the buffer or from an interrupt handler.
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*
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* This function will attempt to receive a specified number of bytes of data
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* from the UART and store it into the specified buffer. This function is
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* designed for either polled or interrupt driven modes. It is non-blocking
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* such that it will return if there is no data has already received by the
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* UART.
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*
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* In a polled mode, this function will only receive as much data as the UART
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* can buffer, either in the receiver or in the FIFO if present and enabled.
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* The application may need to call it repeatedly to receive a buffer. Polled
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* mode is the default mode of operation for the driver.
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*
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* In interrupt mode, this function will start receiving and then the interrupt
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* handler of the driver will continue until the buffer has been received. A
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* callback function, as specified by the application, will be called to indicate
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* the completion of receiving the buffer or when any receive errors or timeouts
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* occur.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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*
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* @return The number of bytes received.
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*
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* @note None.
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*
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*****************************************************************************/
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unsigned int XIOModule_ReceiveBuffer(XIOModule *InstancePtr)
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{
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u8 StatusRegister;
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unsigned int ReceivedCount = 0;
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/*
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* Loop until there is not more data buffered by the UART or the
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* specified number of bytes is received
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*/
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while (ReceivedCount < InstancePtr->ReceiveBuffer.RemainingBytes) {
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/*
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* Read the Status Register to determine if there is any data in
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* the receiver
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*/
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StatusRegister =
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XIOModule_GetStatusReg(InstancePtr->BaseAddress);
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/*
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* If there is data ready to be removed, then put the next byte
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* received into the specified buffer and update the stats to
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* reflect any receive errors for the byte
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*/
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if (StatusRegister & XUL_SR_RX_FIFO_VALID_DATA) {
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InstancePtr->ReceiveBuffer.NextBytePtr[ReceivedCount++]=
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XIOModule_ReadReg(InstancePtr->BaseAddress,
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XUL_RX_OFFSET);
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XIOModule_UpdateStats(InstancePtr, StatusRegister);
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}
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/*
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* There's no more data buffered, so exit such that this
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* function does not block waiting for data
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*/
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else {
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break;
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}
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}
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/*
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* Enter a critical region by disabling all the UART interrupts to allow
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* this call to stop a previous operation that may be interrupt driven
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*/
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StatusRegister = InstancePtr->CurrentIER;
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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StatusRegister & 0xFFFFFFF8);
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/*
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* Update the receive buffer to reflect the number of bytes that was
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* received
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*/
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InstancePtr->ReceiveBuffer.NextBytePtr += ReceivedCount;
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InstancePtr->ReceiveBuffer.RemainingBytes -= ReceivedCount;
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/*
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* Increment associated counters in the statistics
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*/
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InstancePtr->Uart_Stats.CharactersReceived += ReceivedCount;
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/*
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* Restore the interrupt enable register to it's previous value such
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* that the critical region is exited
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*/
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XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
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(InstancePtr->CurrentIER & 0xFFFFFFF8) | (StatusRegister & 0x7));
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return ReceivedCount;
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}
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/****************************************************************************/
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/**
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*
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* This function sets the handler that will be called when an event (interrupt)
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* occurs in the driver for the UART. The purpose of the handler is to allow
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* application specific processing to be performed.
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*
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* @param InstancePtr is a pointer to the XIOModule instance.
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* @param FuncPtr is the pointer to the callback function.
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* @param CallBackRef is the upper layer callback reference passed back
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* when the callback function is invoked.
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*
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* @return None.
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*
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* @note There is no assert on the CallBackRef since the driver doesn't
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* know what it is (nor should it)
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*
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*****************************************************************************/
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void XIOModule_SetRecvHandler(XIOModule *InstancePtr,
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XIOModule_Handler FuncPtr, void *CallBackRef)
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{
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/*
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* Assert validates the input arguments
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* CallBackRef not checked, no way to know what is valid
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*/
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(FuncPtr != NULL);
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Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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InstancePtr->RecvHandler = FuncPtr;
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InstancePtr->RecvCallBackRef = CallBackRef;
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}
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/****************************************************************************/
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/**
|
|
*
|
|
* This function sets the handler that will be called when an event (interrupt)
|
|
* occurs in the driver for the UART. The purpose of the handler is to allow
|
|
* application specific processing to be performed.
|
|
*
|
|
* @param InstancePtr is a pointer to the XIOModule instance .
|
|
* @param FuncPtr is the pointer to the callback function.
|
|
* @param CallBackRef is the upper layer callback reference passed back
|
|
* when the callback function is invoked.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note There is no assert on the CallBackRef since the driver doesn't
|
|
* know what it is (nor should it)
|
|
*
|
|
*****************************************************************************/
|
|
void XIOModule_SetSendHandler(XIOModule *InstancePtr,
|
|
XIOModule_Handler FuncPtr, void *CallBackRef)
|
|
{
|
|
/*
|
|
* Assert validates the input arguments
|
|
* CallBackRef not checked, no way to know what is valid
|
|
*/
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(FuncPtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
|
|
|
|
InstancePtr->SendHandler = FuncPtr;
|
|
InstancePtr->SendCallBackRef = CallBackRef;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/**
|
|
*
|
|
* This function is the interrupt handler for the UART.
|
|
* It must be connected to an interrupt system by the user such that it is
|
|
* called when an interrupt for any UART lite occurs. This function
|
|
* does not save or restore the processor context such that the user must
|
|
* ensure this occurs.
|
|
*
|
|
* @param InstancePtr contains a pointer to the instance of the IOModule
|
|
* that the interrupt is for.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
******************************************************************************/
|
|
void XIOModule_Uart_InterruptHandler(XIOModule *InstancePtr)
|
|
{
|
|
u32 IsrStatus;
|
|
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
|
|
/*
|
|
* Read the status register to determine which, could be both,
|
|
* interrupt is active
|
|
*/
|
|
IsrStatus = XIOModule_ReadReg(InstancePtr->BaseAddress,
|
|
XIN_IPR_OFFSET);
|
|
|
|
if ((IsrStatus & XUL_SR_RX_FIFO_VALID_DATA) != 0) {
|
|
ReceiveDataHandler(InstancePtr);
|
|
}
|
|
|
|
if (((IsrStatus & XUL_SR_TX_FIFO_FULL) == XUL_SR_TX_FIFO_FULL) &&
|
|
(InstancePtr->SendBuffer.RequestedBytes > 0)) {
|
|
SendDataHandler(InstancePtr);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/**
|
|
*
|
|
* This function handles the interrupt when data is received, either a single
|
|
* byte when FIFOs are not enabled, or multiple bytes with the FIFO.
|
|
*
|
|
* @param InstancePtr is a pointer to the XIOModule instance.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
*****************************************************************************/
|
|
static void ReceiveDataHandler(XIOModule *InstancePtr)
|
|
{
|
|
/*
|
|
* If there are bytes still to be received in the specified buffer
|
|
* go ahead and receive them
|
|
*/
|
|
if (InstancePtr->ReceiveBuffer.RemainingBytes != 0) {
|
|
XIOModule_ReceiveBuffer(InstancePtr);
|
|
}
|
|
|
|
/*
|
|
* If the last byte of a message was received then call the application
|
|
* handler, this code should not use an else from the previous check of
|
|
* the number of bytes to receive because the call to receive the buffer
|
|
* updates the bytes to receive
|
|
*/
|
|
if (InstancePtr->ReceiveBuffer.RemainingBytes == 0) {
|
|
InstancePtr->RecvHandler(InstancePtr->RecvCallBackRef,
|
|
InstancePtr->ReceiveBuffer.RequestedBytes -
|
|
InstancePtr->ReceiveBuffer.RemainingBytes);
|
|
}
|
|
|
|
/*
|
|
* Update the receive stats to reflect the receive interrupt
|
|
*/
|
|
InstancePtr->Uart_Stats.ReceiveInterrupts++;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/**
|
|
*
|
|
* This function handles the interrupt when data has been sent, the transmit
|
|
* FIFO is empty (transmitter holding register).
|
|
*
|
|
* @param InstancePtr is a pointer to the XIOModule instance .
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
*****************************************************************************/
|
|
static void SendDataHandler(XIOModule *InstancePtr)
|
|
{
|
|
/*
|
|
* If there are not bytes to be sent from the specified buffer,
|
|
* call the callback function
|
|
*/
|
|
if (InstancePtr->SendBuffer.RemainingBytes == 0) {
|
|
int SaveReq;
|
|
|
|
/*
|
|
* Save and zero the requested bytes since transmission
|
|
* is complete
|
|
*/
|
|
SaveReq = InstancePtr->SendBuffer.RequestedBytes;
|
|
InstancePtr->SendBuffer.RequestedBytes = 0;
|
|
|
|
/*
|
|
* Call the application handler to indicate
|
|
* the data has been sent
|
|
*/
|
|
InstancePtr->SendHandler(InstancePtr->SendCallBackRef, SaveReq);
|
|
}
|
|
/*
|
|
* Otherwise there is still more data to send in the specified buffer
|
|
* so go ahead and send it
|
|
*/
|
|
else {
|
|
XIOModule_SendBuffer(InstancePtr);
|
|
}
|
|
|
|
/*
|
|
* Update the transmit stats to reflect the transmit interrupt
|
|
*/
|
|
InstancePtr->Uart_Stats.TransmitInterrupts++;
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
*
|
|
* This function disables the UART interrupt. After calling this function,
|
|
* data may still be received by the UART but no interrupt will be generated
|
|
* since the hardware device has no way to disable the receiver.
|
|
*
|
|
* @param InstancePtr is a pointer to the XIOModule instance.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
*****************************************************************************/
|
|
void XIOModule_Uart_DisableInterrupt(XIOModule *InstancePtr)
|
|
{
|
|
u32 NewIER;
|
|
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
|
|
|
|
/*
|
|
* Write to the interupt enable register to disable the UART
|
|
* interrupts.
|
|
*/
|
|
NewIER = InstancePtr->CurrentIER & 0xFFFFFFF8;
|
|
XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET, NewIER);
|
|
InstancePtr->CurrentIER = NewIER;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
*
|
|
* This function enables the UART interrupts such that an interrupt will occur
|
|
* when data is received or data has been transmitted.
|
|
*
|
|
* @param InstancePtr is a pointer to the XIOModule instance.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
*****************************************************************************/
|
|
void XIOModule_Uart_EnableInterrupt(XIOModule *InstancePtr)
|
|
{
|
|
u32 NewIER;
|
|
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
|
|
|
|
/*
|
|
* Write to the interrupt enable register to enable the interrupts.
|
|
*/
|
|
NewIER = InstancePtr->CurrentIER | 0x7;
|
|
XIomodule_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET, NewIER);
|
|
InstancePtr->CurrentIER = NewIER;
|
|
}
|