665 lines
20 KiB
C
665 lines
20 KiB
C
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/****************************************************************************//**
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* @file usci_spi.c
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* @version V3.00
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* @brief M480 series USCI_SPI driver source file
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*
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* SPDX-License-Identifier: Apache-2.0
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* @copyright (C) 2016-2020 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include "NuMicro.h"
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/** @addtogroup Standard_Driver Standard Driver
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@{
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*/
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/** @addtogroup USCI_SPI_Driver USCI_SPI Driver
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@{
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*/
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/** @addtogroup USCI_SPI_EXPORTED_FUNCTIONS USCI_SPI Exported Functions
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@{
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*/
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/**
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* @brief This function make USCI_SPI module be ready to transfer.
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* By default, the USCI_SPI transfer sequence is MSB first, the slave selection
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* signal is active low and the automatic slave select function is disabled. In
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* Slave mode, the u32BusClock must be NULL and the USCI_SPI clock
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* divider setting will be 0.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @param[in] u32MasterSlave Decide the USCI_SPI module is operating in master mode or in slave mode. Valid values are:
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* - \ref USPI_SLAVE
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* - \ref USPI_MASTER
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* @param[in] u32SPIMode Decide the transfer timing. Valid values are:
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* - \ref USPI_MODE_0
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* - \ref USPI_MODE_1
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* - \ref USPI_MODE_2
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* - \ref USPI_MODE_3
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* @param[in] u32DataWidth The data width of a USCI_SPI transaction.
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* @param[in] u32BusClock The expected frequency of USCI_SPI bus clock in Hz.
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* @return Actual frequency of USCI_SPI peripheral clock.
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*/
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uint32_t USPI_Open(USPI_T *uspi, uint32_t u32MasterSlave, uint32_t u32SPIMode, uint32_t u32DataWidth, uint32_t u32BusClock)
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{
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uint32_t u32ClkDiv = 0ul;
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uint32_t u32Pclk;
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uint32_t u32UspiClk = 0ul;
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if(uspi == (USPI_T *)USPI0)
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{
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u32Pclk = CLK_GetPCLK0Freq();
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}
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else
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{
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u32Pclk = CLK_GetPCLK1Freq();
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}
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if(u32BusClock != 0ul)
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{
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u32ClkDiv = (uint32_t) ((((((u32Pclk/2ul)*10ul)/(u32BusClock))+5ul)/10ul)-1ul); /* Compute proper divider for USCI_SPI clock */
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}
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else {}
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/* Enable USCI_SPI protocol */
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uspi->CTL &= ~USPI_CTL_FUNMODE_Msk;
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uspi->CTL = 1ul << USPI_CTL_FUNMODE_Pos;
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/* Data format configuration */
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if(u32DataWidth == 16ul)
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{
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u32DataWidth = 0ul;
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}
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else {}
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uspi->LINECTL &= ~USPI_LINECTL_DWIDTH_Msk;
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uspi->LINECTL |= (u32DataWidth << USPI_LINECTL_DWIDTH_Pos);
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/* MSB data format */
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uspi->LINECTL &= ~USPI_LINECTL_LSB_Msk;
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/* Set slave selection signal active low */
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if(u32MasterSlave == USPI_MASTER)
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{
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uspi->LINECTL |= USPI_LINECTL_CTLOINV_Msk;
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}
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else
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{
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uspi->CTLIN0 |= USPI_CTLIN0_ININV_Msk;
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}
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/* Set operating mode and transfer timing */
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uspi->PROTCTL &= ~(USPI_PROTCTL_SCLKMODE_Msk | USPI_PROTCTL_AUTOSS_Msk | USPI_PROTCTL_SLAVE_Msk);
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uspi->PROTCTL |= (u32MasterSlave | u32SPIMode);
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/* Set USCI_SPI bus clock */
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uspi->BRGEN &= ~USPI_BRGEN_CLKDIV_Msk;
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uspi->BRGEN |= (u32ClkDiv << USPI_BRGEN_CLKDIV_Pos);
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uspi->PROTCTL |= USPI_PROTCTL_PROTEN_Msk;
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if(u32BusClock != 0ul)
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{
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u32UspiClk = (uint32_t)( u32Pclk / ((u32ClkDiv+1ul)<<1) );
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}
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else {}
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return u32UspiClk;
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}
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/**
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* @brief Disable USCI_SPI function mode.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @return None
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*/
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void USPI_Close(USPI_T *uspi)
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{
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uspi->CTL &= ~USPI_CTL_FUNMODE_Msk;
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}
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/**
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* @brief Clear Rx buffer.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @return None
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*/
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void USPI_ClearRxBuf(USPI_T *uspi)
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{
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uspi->BUFCTL |= USPI_BUFCTL_RXCLR_Msk;
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}
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/**
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* @brief Clear Tx buffer.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @return None
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*/
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void USPI_ClearTxBuf(USPI_T *uspi)
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{
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uspi->BUFCTL |= USPI_BUFCTL_TXCLR_Msk;
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}
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/**
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* @brief Disable the automatic slave select function.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @return None
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*/
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void USPI_DisableAutoSS(USPI_T *uspi)
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{
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uspi->PROTCTL &= ~(USPI_PROTCTL_AUTOSS_Msk | USPI_PROTCTL_SS_Msk);
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}
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/**
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* @brief Enable the automatic slave select function. Only available in Master mode.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @param[in] u32SSPinMask This parameter is not used.
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* @param[in] u32ActiveLevel The active level of slave select signal. Valid values are:
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* - \ref USPI_SS_ACTIVE_HIGH
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* - \ref USPI_SS_ACTIVE_LOW
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* @return None
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*/
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void USPI_EnableAutoSS(USPI_T *uspi, uint32_t u32SSPinMask, uint32_t u32ActiveLevel)
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{
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uspi->LINECTL = (uspi->LINECTL & ~USPI_LINECTL_CTLOINV_Msk) | u32ActiveLevel;
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uspi->PROTCTL |= USPI_PROTCTL_AUTOSS_Msk;
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}
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/**
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* @brief Set the USCI_SPI bus clock. Only available in Master mode.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @param[in] u32BusClock The expected frequency of USCI_SPI bus clock.
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* @return Actual frequency of USCI_SPI peripheral clock.
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*/
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uint32_t USPI_SetBusClock(USPI_T *uspi, uint32_t u32BusClock)
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{
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uint32_t u32ClkDiv;
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uint32_t u32Pclk;
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if(uspi == USPI0)
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{
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u32Pclk = CLK_GetPCLK0Freq();
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}
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else
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{
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u32Pclk = CLK_GetPCLK1Freq();
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}
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u32ClkDiv = (uint32_t) ((((((u32Pclk/2ul)*10ul)/(u32BusClock))+5ul)/10ul)-1ul); /* Compute proper divider for USCI_SPI clock */
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/* Set USCI_SPI bus clock */
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uspi->BRGEN &= ~USPI_BRGEN_CLKDIV_Msk;
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uspi->BRGEN |= (u32ClkDiv << USPI_BRGEN_CLKDIV_Pos);
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return ( u32Pclk / ((u32ClkDiv+1ul)<<1) );
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}
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/**
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* @brief Get the actual frequency of USCI_SPI bus clock. Only available in Master mode.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @return Actual USCI_SPI bus clock frequency.
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*/
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uint32_t USPI_GetBusClock(USPI_T *uspi)
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{
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uint32_t u32BusClk;
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uint32_t u32ClkDiv;
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u32ClkDiv = (uspi->BRGEN & USPI_BRGEN_CLKDIV_Msk) >> USPI_BRGEN_CLKDIV_Pos;
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if(uspi == USPI0)
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{
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u32BusClk = (uint32_t)( CLK_GetPCLK0Freq() / ((u32ClkDiv+1ul)<<1) );
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}
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else
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{
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u32BusClk = (uint32_t)( CLK_GetPCLK1Freq() / ((u32ClkDiv+1ul)<<1) );
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}
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return u32BusClk;
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}
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/**
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* @brief Enable related interrupts specified by u32Mask parameter.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @param[in] u32Mask The combination of all related interrupt enable bits.
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* Each bit corresponds to a interrupt bit.
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* This parameter decides which interrupts will be enabled. Valid values are:
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* - \ref USPI_SSINACT_INT_MASK
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* - \ref USPI_SSACT_INT_MASK
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* - \ref USPI_SLVTO_INT_MASK
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* - \ref USPI_SLVBE_INT_MASK
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* - \ref USPI_TXUDR_INT_MASK
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* - \ref USPI_RXOV_INT_MASK
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* - \ref USPI_TXST_INT_MASK
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* - \ref USPI_TXEND_INT_MASK
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* - \ref USPI_RXST_INT_MASK
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* - \ref USPI_RXEND_INT_MASK
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* @return None
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*/
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void USPI_EnableInt(USPI_T *uspi, uint32_t u32Mask)
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{
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/* Enable slave selection signal inactive interrupt flag */
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if((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK)
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{
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uspi->PROTIEN |= USPI_PROTIEN_SSINAIEN_Msk;
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}
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else {}
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/* Enable slave selection signal active interrupt flag */
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if((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK)
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{
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uspi->PROTIEN |= USPI_PROTIEN_SSACTIEN_Msk;
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}
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else {}
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/* Enable slave time-out interrupt flag */
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if((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK)
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{
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uspi->PROTIEN |= USPI_PROTIEN_SLVTOIEN_Msk;
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}
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else {}
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/* Enable slave bit count error interrupt flag */
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if((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK)
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{
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uspi->PROTIEN |= USPI_PROTIEN_SLVBEIEN_Msk;
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}
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else {}
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/* Enable TX under run interrupt flag */
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if((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK)
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{
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uspi->BUFCTL |= USPI_BUFCTL_TXUDRIEN_Msk;
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}
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else {}
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/* Enable RX overrun interrupt flag */
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if((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK)
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{
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uspi->BUFCTL |= USPI_BUFCTL_RXOVIEN_Msk;
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}
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else {}
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/* Enable TX start interrupt flag */
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if((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK)
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{
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uspi->INTEN |= USPI_INTEN_TXSTIEN_Msk;
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}
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else {}
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/* Enable TX end interrupt flag */
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if((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK)
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{
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uspi->INTEN |= USPI_INTEN_TXENDIEN_Msk;
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}
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else {}
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/* Enable RX start interrupt flag */
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if((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK)
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{
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uspi->INTEN |= USPI_INTEN_RXSTIEN_Msk;
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}
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else {}
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/* Enable RX end interrupt flag */
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if((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK)
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{
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uspi->INTEN |= USPI_INTEN_RXENDIEN_Msk;
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}
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else {}
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}
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/**
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* @brief Disable related interrupts specified by u32Mask parameter.
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* @param[in] uspi The pointer of the specified USCI_SPI module.
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* @param[in] u32Mask The combination of all related interrupt enable bits.
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* Each bit corresponds to a interrupt bit.
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* This parameter decides which interrupts will be disabled. Valid values are:
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* - \ref USPI_SSINACT_INT_MASK
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* - \ref USPI_SSACT_INT_MASK
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* - \ref USPI_SLVTO_INT_MASK
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* - \ref USPI_SLVBE_INT_MASK
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* - \ref USPI_TXUDR_INT_MASK
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* - \ref USPI_RXOV_INT_MASK
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* - \ref USPI_TXST_INT_MASK
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* - \ref USPI_TXEND_INT_MASK
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* - \ref USPI_RXST_INT_MASK
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* - \ref USPI_RXEND_INT_MASK
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* @return None
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*/
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void USPI_DisableInt(USPI_T *uspi, uint32_t u32Mask)
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{
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/* Disable slave selection signal inactive interrupt flag */
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if((u32Mask & USPI_SSINACT_INT_MASK) == USPI_SSINACT_INT_MASK)
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{
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uspi->PROTIEN &= ~USPI_PROTIEN_SSINAIEN_Msk;
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}
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else {}
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/* Disable slave selection signal active interrupt flag */
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if((u32Mask & USPI_SSACT_INT_MASK) == USPI_SSACT_INT_MASK)
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{
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uspi->PROTIEN &= ~USPI_PROTIEN_SSACTIEN_Msk;
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}
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else {}
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/* Disable slave time-out interrupt flag */
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if((u32Mask & USPI_SLVTO_INT_MASK) == USPI_SLVTO_INT_MASK)
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{
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uspi->PROTIEN &= ~USPI_PROTIEN_SLVTOIEN_Msk;
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}
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else {}
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/* Disable slave bit count error interrupt flag */
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if((u32Mask & USPI_SLVBE_INT_MASK) == USPI_SLVBE_INT_MASK)
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{
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uspi->PROTIEN &= ~USPI_PROTIEN_SLVBEIEN_Msk;
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}
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else {}
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/* Disable TX under run interrupt flag */
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if((u32Mask & USPI_TXUDR_INT_MASK) == USPI_TXUDR_INT_MASK)
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||
|
|
{
|
||
|
|
uspi->BUFCTL &= ~USPI_BUFCTL_TXUDRIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Disable RX overrun interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXOV_INT_MASK) == USPI_RXOV_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->BUFCTL &= ~USPI_BUFCTL_RXOVIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Disable TX start interrupt flag */
|
||
|
|
if((u32Mask & USPI_TXST_INT_MASK) == USPI_TXST_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->INTEN &= ~USPI_INTEN_TXSTIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Disable TX end interrupt flag */
|
||
|
|
if((u32Mask & USPI_TXEND_INT_MASK) == USPI_TXEND_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->INTEN &= ~USPI_INTEN_TXENDIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Disable RX start interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXST_INT_MASK) == USPI_RXST_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->INTEN &= ~USPI_INTEN_RXSTIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Disable RX end interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXEND_INT_MASK) == USPI_RXEND_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->INTEN &= ~USPI_INTEN_RXENDIEN_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get interrupt flag.
|
||
|
|
* @param[in] uspi The pointer of the specified USCI_SPI module.
|
||
|
|
* @param[in] u32Mask The combination of all related interrupt sources.
|
||
|
|
* Each bit corresponds to a interrupt source.
|
||
|
|
* This parameter decides which interrupt flags will be read. It is combination of:
|
||
|
|
* - \ref USPI_SSINACT_INT_MASK
|
||
|
|
* - \ref USPI_SSACT_INT_MASK
|
||
|
|
* - \ref USPI_SLVTO_INT_MASK
|
||
|
|
* - \ref USPI_SLVBE_INT_MASK
|
||
|
|
* - \ref USPI_TXUDR_INT_MASK
|
||
|
|
* - \ref USPI_RXOV_INT_MASK
|
||
|
|
* - \ref USPI_TXST_INT_MASK
|
||
|
|
* - \ref USPI_TXEND_INT_MASK
|
||
|
|
* - \ref USPI_RXST_INT_MASK
|
||
|
|
* - \ref USPI_RXEND_INT_MASK
|
||
|
|
* @return Interrupt flags of selected sources.
|
||
|
|
*/
|
||
|
|
uint32_t USPI_GetIntFlag(USPI_T *uspi, uint32_t u32Mask)
|
||
|
|
{
|
||
|
|
uint32_t u32TmpFlag;
|
||
|
|
uint32_t u32IntFlag = 0ul;
|
||
|
|
|
||
|
|
/* Check slave selection signal inactive interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSINAIF_Msk;
|
||
|
|
if(((u32Mask & USPI_SSINACT_INT_MASK)==USPI_SSINACT_INT_MASK) && (u32TmpFlag==USPI_PROTSTS_SSINAIF_Msk) )
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_SSINACT_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Check slave selection signal active interrupt flag */
|
||
|
|
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSACTIF_Msk;
|
||
|
|
if(((u32Mask & USPI_SSACT_INT_MASK)==USPI_SSACT_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SSACTIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_SSACT_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check slave time-out interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SLVTOIF_Msk;
|
||
|
|
if(((u32Mask & USPI_SLVTO_INT_MASK)==USPI_SLVTO_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SLVTOIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_SLVTO_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check slave bit count error interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SLVBEIF_Msk;
|
||
|
|
if(((u32Mask & USPI_SLVBE_INT_MASK)==USPI_SLVBE_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_SLVBEIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_SLVBE_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check TX under run interrupt flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXUDRIF_Msk;
|
||
|
|
if(((u32Mask & USPI_TXUDR_INT_MASK)==USPI_TXUDR_INT_MASK) && (u32TmpFlag == USPI_BUFSTS_TXUDRIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_TXUDR_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check RX overrun interrupt flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXOVIF_Msk;
|
||
|
|
if(((u32Mask & USPI_RXOV_INT_MASK)==USPI_RXOV_INT_MASK) && (u32TmpFlag == USPI_BUFSTS_RXOVIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_RXOV_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check TX start interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_TXSTIF_Msk;
|
||
|
|
if(((u32Mask & USPI_TXST_INT_MASK)==USPI_TXST_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_TXSTIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_TXST_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check TX end interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_TXENDIF_Msk;
|
||
|
|
if(((u32Mask & USPI_TXEND_INT_MASK)==USPI_TXEND_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_TXENDIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_TXEND_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check RX start interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_RXSTIF_Msk;
|
||
|
|
if(((u32Mask & USPI_RXST_INT_MASK)==USPI_RXST_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_RXSTIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_RXST_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check RX end interrupt flag */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_RXENDIF_Msk;
|
||
|
|
if(((u32Mask & USPI_RXEND_INT_MASK)==USPI_RXEND_INT_MASK) && (u32TmpFlag == USPI_PROTSTS_RXENDIF_Msk))
|
||
|
|
{
|
||
|
|
u32IntFlag |= USPI_RXEND_INT_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
return u32IntFlag;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Clear interrupt flag.
|
||
|
|
* @param[in] uspi The pointer of the specified USCI_SPI module.
|
||
|
|
* @param[in] u32Mask The combination of all related interrupt sources.
|
||
|
|
* Each bit corresponds to a interrupt source.
|
||
|
|
* This parameter decides which interrupt flags will be cleared. It could be the combination of:
|
||
|
|
* - \ref USPI_SSINACT_INT_MASK
|
||
|
|
* - \ref USPI_SSACT_INT_MASK
|
||
|
|
* - \ref USPI_SLVTO_INT_MASK
|
||
|
|
* - \ref USPI_SLVBE_INT_MASK
|
||
|
|
* - \ref USPI_TXUDR_INT_MASK
|
||
|
|
* - \ref USPI_RXOV_INT_MASK
|
||
|
|
* - \ref USPI_TXST_INT_MASK
|
||
|
|
* - \ref USPI_TXEND_INT_MASK
|
||
|
|
* - \ref USPI_RXST_INT_MASK
|
||
|
|
* - \ref USPI_RXEND_INT_MASK
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void USPI_ClearIntFlag(USPI_T *uspi, uint32_t u32Mask)
|
||
|
|
{
|
||
|
|
/* Clear slave selection signal inactive interrupt flag */
|
||
|
|
if((u32Mask & USPI_SSINACT_INT_MASK)==USPI_SSINACT_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_SSINAIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear slave selection signal active interrupt flag */
|
||
|
|
if((u32Mask & USPI_SSACT_INT_MASK)==USPI_SSACT_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_SSACTIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear slave time-out interrupt flag */
|
||
|
|
if((u32Mask & USPI_SLVTO_INT_MASK)==USPI_SLVTO_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_SLVTOIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear slave bit count error interrupt flag */
|
||
|
|
if((u32Mask & USPI_SLVBE_INT_MASK)==USPI_SLVBE_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_SLVBEIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear TX under run interrupt flag */
|
||
|
|
if((u32Mask & USPI_TXUDR_INT_MASK)==USPI_TXUDR_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->BUFSTS = USPI_BUFSTS_TXUDRIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear RX overrun interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXOV_INT_MASK)==USPI_RXOV_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->BUFSTS = USPI_BUFSTS_RXOVIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear TX start interrupt flag */
|
||
|
|
if((u32Mask & USPI_TXST_INT_MASK)==USPI_TXST_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_TXSTIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear TX end interrupt flag */
|
||
|
|
if((u32Mask & USPI_TXEND_INT_MASK)==USPI_TXEND_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_TXENDIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
/* Clear RX start interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXST_INT_MASK)==USPI_RXST_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_RXSTIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Clear RX end interrupt flag */
|
||
|
|
if((u32Mask & USPI_RXEND_INT_MASK)==USPI_RXEND_INT_MASK)
|
||
|
|
{
|
||
|
|
uspi->PROTSTS = USPI_PROTSTS_RXENDIF_Msk;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Get USCI_SPI status.
|
||
|
|
* @param[in] uspi The pointer of the specified USCI_SPI module.
|
||
|
|
* @param[in] u32Mask The combination of all related sources.
|
||
|
|
* Each bit corresponds to a source.
|
||
|
|
* This parameter decides which flags will be read. It is combination of:
|
||
|
|
* - \ref USPI_BUSY_MASK
|
||
|
|
* - \ref USPI_RX_EMPTY_MASK
|
||
|
|
* - \ref USPI_RX_FULL_MASK
|
||
|
|
* - \ref USPI_TX_EMPTY_MASK
|
||
|
|
* - \ref USPI_TX_FULL_MASK
|
||
|
|
* - \ref USPI_SSLINE_STS_MASK
|
||
|
|
* @return Flags of selected sources.
|
||
|
|
*/
|
||
|
|
uint32_t USPI_GetStatus(USPI_T *uspi, uint32_t u32Mask)
|
||
|
|
{
|
||
|
|
uint32_t u32Flag = 0ul;
|
||
|
|
uint32_t u32TmpFlag;
|
||
|
|
|
||
|
|
/* Check busy status */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_BUSY_Msk;
|
||
|
|
if(((u32Mask & USPI_BUSY_MASK)==USPI_BUSY_MASK) && (u32TmpFlag & USPI_PROTSTS_BUSY_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_BUSY_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check RX empty flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXEMPTY_Msk;
|
||
|
|
if(((u32Mask & USPI_RX_EMPTY_MASK)==USPI_RX_EMPTY_MASK) && (u32TmpFlag == USPI_BUFSTS_RXEMPTY_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_RX_EMPTY_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check RX full flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_RXFULL_Msk;
|
||
|
|
if(((u32Mask & USPI_RX_FULL_MASK)==USPI_RX_FULL_MASK) && (u32TmpFlag == USPI_BUFSTS_RXFULL_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_RX_FULL_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check TX empty flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXEMPTY_Msk;
|
||
|
|
if(((u32Mask & USPI_TX_EMPTY_MASK)==USPI_TX_EMPTY_MASK) && (u32TmpFlag == USPI_BUFSTS_TXEMPTY_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_TX_EMPTY_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check TX full flag */
|
||
|
|
u32TmpFlag = uspi->BUFSTS & USPI_BUFSTS_TXFULL_Msk;
|
||
|
|
if(((u32Mask & USPI_TX_FULL_MASK)==USPI_TX_FULL_MASK) && (u32TmpFlag == USPI_BUFSTS_TXFULL_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_TX_FULL_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
|
||
|
|
/* Check USCI_SPI_SS line status */
|
||
|
|
u32TmpFlag = uspi->PROTSTS & USPI_PROTSTS_SSLINE_Msk;
|
||
|
|
if(((u32Mask & USPI_SSLINE_STS_MASK)==USPI_SSLINE_STS_MASK) && (u32TmpFlag & USPI_PROTSTS_SSLINE_Msk))
|
||
|
|
{
|
||
|
|
u32Flag |= USPI_SSLINE_STS_MASK;
|
||
|
|
}
|
||
|
|
else {}
|
||
|
|
return u32Flag;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enable USCI_SPI Wake-up Function.
|
||
|
|
* @param[in] uspi The pointer of the specified USCI_SPI module.
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void USPI_EnableWakeup(USPI_T *uspi)
|
||
|
|
{
|
||
|
|
uspi->WKCTL |= USPI_WKCTL_WKEN_Msk;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disable USCI_SPI Wake-up Function.
|
||
|
|
* @param[in] uspi The pointer of the specified USCI_SPI module.
|
||
|
|
* @return None
|
||
|
|
*/
|
||
|
|
void USPI_DisableWakeup(USPI_T *uspi)
|
||
|
|
{
|
||
|
|
uspi->WKCTL &= ~USPI_WKCTL_WKEN_Msk;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*@}*/ /* end of group USCI_SPI_EXPORTED_FUNCTIONS */
|
||
|
|
|
||
|
|
/*@}*/ /* end of group USCI_SPI_Driver */
|
||
|
|
|
||
|
|
/*@}*/ /* end of group Standard_Driver */
|
||
|
|
|
||
|
|
/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/
|