88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
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* File Name : xti.c
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* Author : MCD Application Team
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* Date First Issued : 06/08/2003
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* Description : This file provides all the XTI software functions
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********************************************************************************
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* History:
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* 24/05/2005 : V3.0
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* 30/11/2004 : V2.0
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* 14/07/2004 : V1.3
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* 01/01/2004 : V1.2
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*******************************************************************************
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THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
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CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
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OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
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CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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#include "xti.h"
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/*******************************************************************************
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* Function Name : XTI_Init
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* Description : Initialize the XTI
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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void XTI_Init(void)
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{
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XTI->SR=0x00;
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XTI->MRH=0x00;
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XTI->MRL=0x00;
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XTI->TRH=0x00;
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XTI->TRL=0x00;
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XTI->PRH=0x00;
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XTI->PRL=0x00;
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XTI->CTRL=0x00; /* Write the STOP bit twice to reset the STOP state machine */
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XTI->CTRL=0x00;
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}
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/*******************************************************************************
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* Function Name : XTI_LineModeConfig
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* Description : Configure the trigger edge.
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* Input 1 : Lines to be configured.
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* Input 2 : The trigger edge can be FallingEdge or RisingEdge.
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* Output : None
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* Return : None
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*******************************************************************************/
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void XTI_LineModeConfig(u16 Lines, XTITriggerEdge_TypeDef TriggerEdge)
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{
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if(TriggerEdge == XTI_FallingEdge)
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{
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XTI->TRL &= ~Lines;
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XTI->TRH &= ~(Lines>>8)&0x00FF;
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}
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else
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{
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XTI->TRL |= Lines;
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XTI->TRH |= (Lines>>8)&0x00FF;
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}
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}
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/*******************************************************************************
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* Function Name : XTI_LineConfig
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* Description : Enable and disable lines interrupts
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* Input 1 : Lines to be configured.
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* Input 2 : NewState can be ENABLE or DISABLE.
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* Output : None
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* Return : None
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*******************************************************************************/
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void XTI_LineConfig(u16 Lines, FunctionalState NewState)
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{
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if(NewState)
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{
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XTI->MRL |= Lines;
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XTI->MRH |= (Lines>>8)&0x00FF;
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}
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else
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{
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XTI->MRL &= ~Lines;
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XTI->MRH &= ~(Lines>>8)&0x00FF;
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}
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}
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/******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/
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