/************************************************************************************* * 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