353 lines
11 KiB
C
353 lines
11 KiB
C
/******************************************************************************
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* Copyright (C) 2016, Huada Semiconductor Co.,Ltd All rights reserved.
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*
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* This software is owned and published by:
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* Huada Semiconductor Co.,Ltd ("HDSC").
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*
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* BY DOWNLOADING, INSTALLING OR USING THIS SOFTWARE, YOU AGREE TO BE BOUND
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* BY ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT.
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*
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* This software contains source code for use with HDSC
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* components. This software is licensed by HDSC to be adapted only
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* for use in systems utilizing HDSC components. HDSC shall not be
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* responsible for misuse or illegal use of this software for devices not
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* supported herein. HDSC is providing this software "AS IS" and will
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* not be responsible for issues arising from incorrect user implementation
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* of the software.
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*
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* Disclaimer:
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* HDSC MAKES NO WARRANTY, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE,
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* REGARDING THE SOFTWARE (INCLUDING ANY ACOOMPANYING WRITTEN MATERIALS),
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* ITS PERFORMANCE OR SUITABILITY FOR YOUR INTENDED USE, INCLUDING,
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* WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, THE IMPLIED
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* WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE, AND THE IMPLIED
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* WARRANTY OF NONINFRINGEMENT.
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* HDSC SHALL HAVE NO LIABILITY (WHETHER IN CONTRACT, WARRANTY, TORT,
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* NEGLIGENCE OR OTHERWISE) FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT
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* LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION,
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* LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING FROM USE OR
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* INABILITY TO USE THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA,
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* SAVINGS OR PROFITS,
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* EVEN IF Disclaimer HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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* YOU ASSUME ALL RESPONSIBILITIES FOR SELECTION OF THE SOFTWARE TO ACHIEVE YOUR
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* INTENDED RESULTS, AND FOR THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED
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* FROM, THE SOFTWARE.
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*
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* This software may be replicated in part or whole for the licensed use,
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* with the restriction that this Disclaimer and Copyright notice must be
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* included with eaenCh copy of this software, whether used in part or whole,
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* at all times.
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*/
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/*****************************************************************************/
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/** \file spi.c
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**
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** SPI driver API.
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** @link Driver Group Some description @endlink
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**
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** - 2018-05-17 1.0 Devi First version for Device Driver Library of
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** Module.
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**
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*****************************************************************************/
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/******************************************************************************
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* Include files
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*****************************************************************************/
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#include "hc32l196_spi.h"
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/**
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******************************************************************************
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** \addtogroup SpiGroup
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*****************************************************************************/
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//@{
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/******************************************************************************
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* Local pre-processor symbols/macros ('#define')
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*****************************************************************************/
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#define IS_VALID_STAT(x) ( SpiIf == (x)||\
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SpiSserr == (x)||\
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SpiBusy == (x)||\
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SpiMdf == (x)||\
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SpiTxe == (x)||\
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SpiRxne == (x))
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/******************************************************************************/
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/* Local function prototypes ('static') */
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/******************************************************************************/
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/******************************************************************************/
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/* Local variable prototypes ('static') */
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/******************************************************************************/
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/**
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******************************************************************************
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** \brief SPI 请求状态获取
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**
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** \param [in]SPIx 通道， enStatus 获取请求
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**
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** \retval 请求状态
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**
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******************************************************************************/
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boolean_t Spi_GetStatus(M0P_SPI_TypeDef* SPIx, en_spi_status_t enStatus)
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{
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ASSERT(IS_VALID_STAT(enStatus));
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if(SPIx->STAT&enStatus)
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{
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return TRUE;
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}
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else
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{
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return FALSE;
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}
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}
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/**
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******************************************************************************
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** \brief SPI中断清除
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**
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** \param [in]SPIx 通道选择
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**
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** \retval 请求状态
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**
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******************************************************************************/
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en_result_t Spi_ClearStatus(M0P_SPI_TypeDef* SPIx)
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{
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SPIx->ICLR = 0;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 中断使能函数
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**
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** \param [in] SPIx 通道
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**
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** \retval Ok成功
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**
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******************************************************************************/
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en_result_t Spi_IrqEnable(M0P_SPI_TypeDef* SPIx)
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{
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SPIx->CR2 |= 0x4u;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 中断禁止函数
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**
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** \param [in] enCh通道
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**
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** \retval Ok成功
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**
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******************************************************************************/
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en_result_t Spi_IrqDisable(M0P_SPI_TypeDef* SPIx)
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{
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SPIx->CR2 &= ~0x4u;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 功能使能函数
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**
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** \param [in] SPIx 通道，enFunc功能
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**
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** \retval Ok初始化成功
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**
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******************************************************************************/
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en_result_t Spi_FuncEnable(M0P_SPI_TypeDef* SPIx, en_spi_func_t enFunc)
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{
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SPIx->CR2 |= enFunc;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 功能禁止函数
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**
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** \param [in] SPIx 通道，enFunc功能
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**
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** \retval Ok初始化成功
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**
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******************************************************************************/
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en_result_t Spi_FuncDisable(M0P_SPI_TypeDef* SPIx, en_spi_func_t enFunc)
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{
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SPIx->CR2 &= ~(uint32_t)enFunc;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 总体初始化函数
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**
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** \param [in] SPIx 通道
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** \param [in] pstcSpiCfg 初始化结构体
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**
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** \retval Ok初始化成功
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** \retval ErrorInvalidParameter 初始化错误
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******************************************************************************/
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en_result_t Spi_Init(M0P_SPI_TypeDef* SPIx, stc_spi_cfg_t *pstcSpiCfg)
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{
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ASSERT(NULL != pstcSpiCfg);
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SPIx->CR = 0;
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SPIx->SSN = TRUE;
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SPIx->CR = (uint32_t)pstcSpiCfg->enSpiMode |
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(uint32_t)pstcSpiCfg->enPclkDiv |
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(uint32_t)pstcSpiCfg->enCPOL |
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(uint32_t)pstcSpiCfg->enCPHA |
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(uint32_t)0x40;
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SPIx->STAT = 0x00;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 配置主发送的电平
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**
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** \param [in] SPIx 通道选择，bFlag高低电平
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**
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** \retval 无
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**
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******************************************************************************/
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void Spi_SetCS(M0P_SPI_TypeDef* SPIx, boolean_t bFlag)
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{
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SPIx->SSN = bFlag;
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}
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/**
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******************************************************************************
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** \brief SPI 发送一字节函数
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**
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** \param [in] SPIx 通道选择，u8Data发送字节
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**
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** \retval Ok发送成功
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**
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******************************************************************************/
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en_result_t Spi_SendData(M0P_SPI_TypeDef* SPIx, uint8_t u8Data)
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{
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SPIx->DATA = u8Data;
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 读/写一字节函数
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**
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** \param [in] SPIx 通道选择
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** \param [in] u8Data 发送一字节数据
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**
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** \retval 接收一字节数据
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**
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******************************************************************************/
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uint8_t Spi_RWByte(M0P_SPI_TypeDef* SPIx, uint8_t u8Data)
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{
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while(FALSE == SPIx->STAT_f.TXE){;}
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SPIx->DATA = u8Data;
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while(FALSE == SPIx->STAT_f.RXNE){;}
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return SPIx->DATA;
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}
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/**
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******************************************************************************
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** \brief SPI 从机预准备第一字节数据
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**
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** \param [in] SPIx 通道选择
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** \param [in] u8Data 预准备第一字节数据
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**
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** \retval None
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**
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******************************************************************************/
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void Spi_Slave_DummyWriteData(M0P_SPI_TypeDef* SPIx, uint8_t u8Data)
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{
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while(FALSE == SPIx->STAT_f.TXE){;}
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SPIx->DATA = u8Data;
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}
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/**
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******************************************************************************
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** \brief SPI 连续发送多字节函数
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**
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** \param [in] SPIx 通道选择
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** \param [in] pu8Buf 发送数据指针
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**
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** \retval Ok发送成功
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**
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******************************************************************************/
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en_result_t Spi_SendBuf(M0P_SPI_TypeDef* SPIx, uint8_t* pu8Buf, uint32_t u32Len)
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{
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uint32_t u32Index=0;
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for(u32Index=0; u32Index<u32Len; u32Index++)
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{
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while(FALSE == SPIx->STAT_f.TXE){;}
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SPIx->DATA = pu8Buf[u32Index];
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while(FALSE == SPIx->STAT_f.RXNE){;}
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pu8Buf[u32Index] = SPIx->DATA;
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}
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while(FALSE == SPIx->STAT_f.TXE){;}
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while(TRUE == SPIx->STAT_f.BUSY){;}
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return Ok;
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}
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/**
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******************************************************************************
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** \brief SPI 接收一字节函数
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**
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** \param [in] SPIx接收通道
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**
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** \retval 接收一字节数据
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**
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******************************************************************************/
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uint8_t Spi_ReceiveData(M0P_SPI_TypeDef* SPIx)
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{
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return SPIx->DATA;
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}
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/**
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******************************************************************************
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** \brief SPI 连续接收多字节函数
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**
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** \param [in] SPIx 通道选择
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** \param [in] pu8Buf 发送数据指针
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**
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** \retval Ok发送成功
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**
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******************************************************************************/
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en_result_t Spi_ReceiveBuf(M0P_SPI_TypeDef* SPIx, uint8_t* pu8Buf, uint32_t u32Len)
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{
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uint32_t u32Index=0;
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for(u32Index=0; u32Index<u32Len; u32Index++)
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{
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while(FALSE == SPIx->STAT_f.TXE){;}
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SPIx->DATA = 0x00;
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while(FALSE == SPIx->STAT_f.RXNE){;}
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pu8Buf[u32Index] = SPIx->DATA;
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}
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while(TRUE == SPIx->STAT_f.BUSY){;}
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return Ok;
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}
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//@} // SpiGroup
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/******************************************************************************
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* EOF (not truncated)
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*****************************************************************************/
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