/**************************************************************************//**
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* @file spi.c
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* @version V1.10
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* $Revision: 2 $
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* $Date: 19/10/22 17:18 $
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* @brief PAN series SPI driver source file
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*
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* @note
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* Copyright (C) 2016 Panchip Technology Corp. All rights reserved.
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*****************************************************************************/
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#include "PanSeries.h"
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#include "pan_spi.h"
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/** @addtogroup PAN_Device_Driver PAN Device Driver
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@{
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*/
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/** @addtogroup PAN_SPI_Driver SPI Driver
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@{
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*/
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/** @addtogroup PAN_SPI_EXPORTED_FUNCTIONS SPI Exported Functions
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@{
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*/
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/**
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* @brief Initializes the SPIx peripheral according to the specified
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* parameters in the SPI_InitStruct .
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* @param SPIx: where x can be 1, 2 to select the
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* SPI peripheral.
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* @param SPI_InitStruct: pointer to a SPI_InitTypeDef structure that contains
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* the configuration information for the specified SPI peripheral.
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* @retval None
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*/
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void SPI_Init(SPI_T* SPIx, SPI_InitTypeDef* SPI_InitStruct)
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{
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uint32_t tmpreg = 0;
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if(SPI_IsSpiEnabled(SPIx))
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SPI_DisableSpi(SPIx);
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tmpreg = SPIx->CR0;
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tmpreg &= ~(SPI_CR0_SPH_Msk | SPI_CR0_SPO_Msk | SPI_CR0_DSS_Msk);
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tmpreg |= (
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((SPI_InitStruct->SPI_CPHA << SPI_CR0_SPH_Pos) & SPI_CR0_SPH_Msk ) | \
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((SPI_InitStruct->SPI_CPOL << SPI_CR0_SPO_Pos) & SPI_CR0_SPO_Msk ) | \
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((SPI_InitStruct->SPI_dataFrameSize << SPI_CR0_DSS_Pos) & SPI_CR0_DSS_Msk ) \
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);
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tmpreg &= ~(SPI_CR0_FRF_Msk);
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tmpreg |= (SPI_InitStruct->SPI_format << SPI_CR0_FRF_Pos);
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tmpreg &= ~(SPI_CR0_SCR_Msk);
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tmpreg |= ((SPI_InitStruct->SPI_baudRateDiv-1) << SPI_CR0_SCR_Pos); //Fixed SCR to 0, only use CPSR to config baudrate
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SPIx->CR0 = tmpreg;
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//Baudrate Config, expect_baudrate = apb_clk / ((1 + SCR) * CPSR)
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SPIx->CPSR = 2;//SPI_InitStruct->SPI_baudRateDiv;
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//Role Select
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if(SPI_InitStruct->SPI_role == SPI_RoleSlave)
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{
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SPIx->CR1 |= SPI_CR1_MS_Msk;
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}
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else
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{
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SPIx->CR1 &= ~SPI_CR1_MS_Msk;
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}
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}
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/*@}*/ /* end of group PAN_SPI_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group PAN_SPI_Driver */
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/*@}*/ /* end of group PAN_Device_Driver */
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/*** (C) COPYRIGHT 2016 Panchip Technology Corp. ***/
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