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/*************************************************************************************
* Copyright (C) 2017, Huada Semiconductor Co.,Ltd All rights reserved.
*
* This software is owned and published by:
* Huada Semiconductor Co.,Ltd ("HDSC").
*
* BY DOWNLOADING, INSTALLING OR USING THIS SOFTWARE, YOU AGREE TO BE BOUND
* BY ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT.
*
* This software contains source code for use with HDSC
* components. This software is licensed by HDSC to be adapted only
* for use in systems utilizing HDSC components. HDSC shall not be
* responsible for misuse or illegal use of this software for devices not
* supported herein. HDSC is providing this software "AS IS" and will
* not be responsible for issues arising from incorrect user implementation
* of the software.
*
* Disclaimer:
* HDSC MAKES NO WARRANTY, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE,
* REGARDING THE SOFTWARE (INCLUDING ANY ACOOMPANYING WRITTEN MATERIALS),
* ITS PERFORMANCE OR SUITABILITY FOR YOUR INTENDED USE, INCLUDING,
* WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, THE IMPLIED
* WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE, AND THE IMPLIED
* WARRANTY OF NONINFRINGEMENT.
* HDSC SHALL HAVE NO LIABILITY (WHETHER IN CONTRACT, WARRANTY, TORT,
* NEGLIGENCE OR OTHERWISE) FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT
* LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION,
* LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING FROM USE OR
* INABILITY TO USE THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA,
* SAVINGS OR PROFITS,
* EVEN IF Disclaimer HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* YOU ASSUME ALL RESPONSIBILITIES FOR SELECTION OF THE SOFTWARE TO ACHIEVE YOUR
* INTENDED RESULTS, AND FOR THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED
* FROM, THE SOFTWARE.
*
* This software may be replicated in part or whole for the licensed use,
* with the restriction that this Disclaimer and Copyright notice must be
* included with each copy of this software, whether used in part or whole,
* at all times.
*/
/******************************************************************************/
/** \file I2C.c
**
** WDT function driver API.
** @link SampleGroup Some description @endlink
**
** - 2018-03-13 1.0 CJ First version for Device Driver Library of Module.
**
******************************************************************************/
/******************************************************************************/
/* Include files */
/******************************************************************************/
#include "hc32l196_i2c.h"
/**
*******************************************************************************
** \addtogroup I2cGroup
******************************************************************************/
//@{
/******************************************************************************/
/* Local function prototypes ('static') */
/******************************************************************************/
/**
******************************************************************************
** \brief I2C设置波特率配置寄存器
**
** \param [in] u8Tm 波特率配置值
**
** \retval enRet 成功或失败
**
******************************************************************************/
en_result_t I2C_SetBaud(M0P_I2C_TypeDef* I2Cx, uint8_t u8Tm)
{
en_result_t enRet = Error;
I2Cx->TM = u8Tm;
enRet = Ok;
return enRet;
}
/**
******************************************************************************
** \brief I2C功能设置相关函数
**
** \param [in] enFunc功能参数
**
** \retval enRet 成功或失败
**
******************************************************************************/
en_result_t I2C_SetFunc(M0P_I2C_TypeDef* I2Cx, en_i2c_func_t enFunc)
{
en_result_t enRet = Error;
SetBit((uint32_t)&I2Cx->CR, enFunc, TRUE);
enRet = Ok;
return enRet;
}
/**
******************************************************************************
** \brief I2C功能清除相关函数
**
** \param [in] enFunc功能参数
**
** \retval enRet 成功或失败
**
******************************************************************************/
en_result_t I2C_ClearFunc(M0P_I2C_TypeDef* I2Cx, en_i2c_func_t enFunc)
{
en_result_t enRet = Error;
SetBit((uint32_t)&I2Cx->CR, enFunc, FALSE);
enRet = Ok;
return enRet;
}
/**
******************************************************************************
** \brief I2C获取中断标记函数
**
** \param 无
**
** \retval bIrq中断标记
**
******************************************************************************/
boolean_t I2C_GetIrq(M0P_I2C_TypeDef* I2Cx)
{
if(I2Cx->CR&0x8)
{
return TRUE;
}
else
{
return FALSE;
}
}
/**
******************************************************************************
** \brief I2C清除中断标记函数
**
** \param 无
**
** \retval bIrq中断标记
**
******************************************************************************/
en_result_t I2C_ClearIrq(M0P_I2C_TypeDef* I2Cx)
{
en_result_t enRet = Error;
I2Cx->CR &= ~0x8u;
enRet = Ok;
return enRet;
}
/**
******************************************************************************
** \brief I2C获取相关状态
**
** \param 无
**
** \retval I2C状态
**
******************************************************************************/
uint8_t I2C_GetState(M0P_I2C_TypeDef* I2Cx)
{
uint8_t u8State = 0;
u8State = I2Cx->STAT;
return u8State;
}
/**
******************************************************************************
** \brief 字节数据写函数
**
** \param u8Data写数据
**
** \retval 写数据是否成功
**
******************************************************************************/
en_result_t I2C_WriteByte(M0P_I2C_TypeDef* I2Cx, uint8_t u8Data)
{
en_result_t enRet = Error;
I2Cx->DATA = u8Data;
enRet = Ok;
return enRet;
}
/**
******************************************************************************
** \brief 字节数据读函数
**
** \param 无
**
** \retval 读取数据
**
******************************************************************************/
uint8_t I2C_ReadByte(M0P_I2C_TypeDef* I2Cx)
{
uint8_t u8Data = 0;
u8Data = I2Cx->DATA;
return u8Data;
}
/**
******************************************************************************
** \brief I2C模块初始化
**
** \param pstcI2CCfg初始化配置结构体
**
** \retval 初始化是否成功
**
******************************************************************************/
en_result_t I2C_Init(M0P_I2C_TypeDef* I2Cx, stc_i2c_cfg_t *pstcI2CCfg)
{
en_result_t enRet = Error;
uint8_t u8Tm;
if(M0P_I2C0 == I2Cx)
{
M0P_RESET->PERI_RESET0 &= ~(uint32_t)0x10u;
M0P_RESET->PERI_RESET0 |= (uint32_t)0x10u;
}
else
{
M0P_RESET->PERI_RESET0 &= ~(uint32_t)0x20u;
M0P_RESET->PERI_RESET0 |= (uint32_t)0x20u;
}
I2Cx->CR = 0;
I2Cx->CR = pstcI2CCfg->enMode;
if((pstcI2CCfg->u32Baud<<4) > pstcI2CCfg->u32Pclk)
{
return Error;
}
if(I2cMasterMode == pstcI2CCfg->enMode)
{
I2Cx->TMRUN = TRUE;
///< Fsck = Fpclk/8*(Tm+1)
u8Tm = ((pstcI2CCfg->u32Pclk / pstcI2CCfg->u32Baud) >> 3) - 1;
if(9 > u8Tm)
{
I2C_SetFunc(I2Cx,I2cHlm_En);
}
enRet = I2C_SetBaud(I2Cx, u8Tm);
}
else
{
I2Cx->TMRUN = FALSE;
pstcI2CCfg->u8SlaveAddr = (uint8_t)(((uint32_t)pstcI2CCfg->u8SlaveAddr<<1)|(pstcI2CCfg->bGc));
I2Cx->ADDR = pstcI2CCfg->u8SlaveAddr;
}
return enRet;
}
//@} // I2cGroup
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