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rt-thread/bsp/nuvoton/libraries/m031/StdDriver/src/nu_qspi.c

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[nuvoton] Support M031 Series. 1. Import M031 porting. 2. Support numaker-m032ki BSP.
2021-05-17 16:23:41 +08:00
/**************************************************************************//**
* @file qspi.c
* @version V1.00
* @brief M031 series QSPI driver source file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "M031Series.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup QSPI_Driver QSPI Driver
@{
*/
/** @addtogroup QSPI_EXPORTED_FUNCTIONS QSPI Exported Functions
@{
*/
/**
* @brief This function make QSPI module be ready to transfer.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32MasterSlave Decides the QSPI module is operating in master mode or in slave mode. (QSPI_SLAVE, QSPI_MASTER)
* @param[in] u32QSPIMode Decides the transfer timing. (QSPI_MODE_0, QSPI_MODE_1, QSPI_MODE_2, QSPI_MODE_3)
* @param[in] u32DataWidth Decides the data width of a QSPI transaction.
* @param[in] u32BusClock The expected frequency of QSPI bus clock in Hz.
* @return Actual frequency of QSPI peripheral clock.
* @details By default, the QSPI transfer sequence is MSB first, the slave selection signal is active low and the automatic
* slave selection function is disabled.
* In Slave mode, the u32BusClock shall be NULL and the QSPI clock divider setting will be 0.
* The actual clock rate may be different from the target QSPI clock rate.
* For example, if the QSPI source clock rate is 12 MHz and the target QSPI bus clock rate is 7 MHz, the
* actual QSPI clock rate will be 6MHz.
* @note If u32BusClock = 0, DIVIDER setting will be set to the maximum value.
* @note If u32BusClock >= system clock frequency, QSPI peripheral clock source will be set to APB clock and DIVIDER will be set to 0.
* @note If u32BusClock >= QSPI peripheral clock source, DIVIDER will be set to 0.
* @note In slave mode, the QSPI peripheral clock rate will be equal to APB clock rate.
*/
uint32_t QSPI_Open(QSPI_T *qspi,
uint32_t u32MasterSlave,
uint32_t u32QSPIMode,
uint32_t u32DataWidth,
uint32_t u32BusClock)
{
uint32_t u32ClkSrc = 0UL, u32Div, u32HCLKFreq, u32RetValue = 0UL;
if (u32DataWidth == 32UL)
{
u32DataWidth = 0UL;
}
/* Get system clock frequency */
u32HCLKFreq = CLK_GetHCLKFreq();
if (u32MasterSlave == QSPI_MASTER)
{
/* Default setting: slave selection signal is active low; disable automatic slave selection function. */
qspi->SSCTL = QSPI_SS_ACTIVE_LOW;
/* Default setting: MSB first, disable unit transfer interrupt, SP_CYCLE = 0. */
qspi->CTL = u32MasterSlave | (u32DataWidth << QSPI_CTL_DWIDTH_Pos) | (u32QSPIMode) | QSPI_CTL_SPIEN_Msk;
if (u32BusClock >= u32HCLKFreq)
{
/* Select PCLK as the clock source of QSPI */
CLK->CLKSEL2 = (CLK->CLKSEL2 & (~CLK_CLKSEL2_QSPI0SEL_Msk)) | CLK_CLKSEL2_QSPI0SEL_PCLK0;
}
/* Check clock source of QSPI */
if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_HXT)
{
u32ClkSrc = __HXT; /* Clock source is HXT */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PLL)
{
u32ClkSrc = CLK_GetPLLClockFreq(); /* Clock source is PLL */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PCLK0)
{
/* Clock source is PCLK0 */
u32ClkSrc = CLK_GetPCLK0Freq();
}
else
{
u32ClkSrc = __HIRC; /* Clock source is HIRC */
}
if (u32BusClock >= u32HCLKFreq)
{
/* Set DIVIDER = 0 */
qspi->CLKDIV = 0UL;
/* Return master peripheral clock rate */
u32RetValue = u32ClkSrc;
}
else if (u32BusClock >= u32ClkSrc)
{
/* Set DIVIDER = 0 */
qspi->CLKDIV = 0UL;
/* Return master peripheral clock rate */
u32RetValue = u32ClkSrc;
}
else if (u32BusClock == 0UL)
{
/* Set DIVIDER to the maximum value 0x1FF. f_qspi = f_qspi_clk_src / (DIVIDER + 1) */
qspi->CLKDIV |= QSPI_CLKDIV_DIVIDER_Msk;
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (0x1FFUL + 1UL));
}
else
{
u32Div = (((u32ClkSrc * 10UL) / u32BusClock + 5UL) / 10UL) - 1UL; /* Round to the nearest integer */
if (u32Div > 0x1FFUL)
{
u32Div = 0x1FFUL;
qspi->CLKDIV |= QSPI_CLKDIV_DIVIDER_Msk;
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (0x1FFUL + 1UL));
}
else
{
qspi->CLKDIV = (qspi->CLKDIV & (~QSPI_CLKDIV_DIVIDER_Msk)) | (u32Div << QSPI_CLKDIV_DIVIDER_Pos);
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (u32Div + 1UL));
}
}
}
else /* For slave mode, force the QSPI peripheral clock rate to equal APB clock rate. */
{
/* Default setting: slave selection signal is low level active. */
qspi->SSCTL = QSPI_SS_ACTIVE_LOW;
/* Default setting: MSB first, disable unit transfer interrupt, SP_CYCLE = 0. */
qspi->CTL = u32MasterSlave | (u32DataWidth << QSPI_CTL_DWIDTH_Pos) | (u32QSPIMode) | QSPI_CTL_SPIEN_Msk;
/* Set DIVIDER = 0 */
qspi->CLKDIV = 0UL;
/* Select PCLK as the clock source of QSPI */
CLK->CLKSEL2 = (CLK->CLKSEL2 & (~CLK_CLKSEL2_QSPI0SEL_Msk)) | CLK_CLKSEL2_QSPI0SEL_PCLK0;
/* Return slave peripheral clock rate */
u32RetValue = CLK_GetPCLK0Freq();
}
return u32RetValue;
}
/**
* @brief Disable QSPI controller.
* @param[in] qspi The pointer of the specified QSPI module.
* @return None
* @details This function will reset QSPI controller.
*/
void QSPI_Close(QSPI_T *qspi)
{
/* Reset QSPI */
SYS->IPRST1 |= SYS_IPRST1_QSPI0RST_Msk;
SYS->IPRST1 &= ~SYS_IPRST1_QSPI0RST_Msk;
}
/**
* @brief Clear RX FIFO buffer.
* @param[in] qspi The pointer of the specified QSPI module.
* @return None
* @details This function will clear QSPI RX FIFO buffer. The RXEMPTY (QSPI_STATUS[8]) will be set to 1.
*/
void QSPI_ClearRxFIFO(QSPI_T *qspi)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_RXFBCLR_Msk;
}
/**
* @brief Clear TX FIFO buffer.
* @param[in] qspi The pointer of the specified QSPI module.
* @return None
* @details This function will clear QSPI TX FIFO buffer. The TXEMPTY (QSPI_STATUS[16]) will be set to 1.
* @note The TX shift register will not be cleared.
*/
void QSPI_ClearTxFIFO(QSPI_T *qspi)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_TXFBCLR_Msk;
}
/**
* @brief Disable the automatic slave selection function.
* @param[in] qspi The pointer of the specified QSPI module.
* @return None
* @details This function will disable the automatic slave selection function and set slave selection signal to inactive state.
*/
void QSPI_DisableAutoSS(QSPI_T *qspi)
{
qspi->SSCTL &= ~(QSPI_SSCTL_AUTOSS_Msk | QSPI_SSCTL_SS_Msk);
}
/**
* @brief Enable the automatic slave selection function.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32SSPinMask Specifies slave selection pins. (QSPI_SS)
* @param[in] u32ActiveLevel Specifies the active level of slave selection signal. (QSPI_SS_ACTIVE_HIGH, QSPI_SS_ACTIVE_LOW)
* @return None
* @details This function will enable the automatic slave selection function. Only available in Master mode.
* The slave selection pin and the active level will be set in this function.
*/
void QSPI_EnableAutoSS(QSPI_T *qspi, uint32_t u32SSPinMask, uint32_t u32ActiveLevel)
{
qspi->SSCTL = (qspi->SSCTL & (~(QSPI_SSCTL_AUTOSS_Msk | QSPI_SSCTL_SSACTPOL_Msk | QSPI_SSCTL_SS_Msk))) | (u32SSPinMask | u32ActiveLevel | QSPI_SSCTL_AUTOSS_Msk);
}
/**
* @brief Set the QSPI bus clock.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32BusClock The expected frequency of QSPI bus clock in Hz.
* @return Actual frequency of QSPI bus clock.
* @details This function is only available in Master mode. The actual clock rate may be different from the target QSPI bus clock rate.
* For example, if the QSPI source clock rate is 12 MHz and the target QSPI bus clock rate is 7 MHz, the actual QSPI bus clock
* rate will be 6 MHz.
* @note If u32BusClock = 0, DIVIDER setting will be set to the maximum value.
* @note If u32BusClock >= system clock frequency, QSPI peripheral clock source will be set to APB clock and DIVIDER will be set to 0.
* @note If u32BusClock >= QSPI peripheral clock source, DIVIDER will be set to 0.
*/
uint32_t QSPI_SetBusClock(QSPI_T *qspi, uint32_t u32BusClock)
{
uint32_t u32ClkSrc, u32HCLKFreq;
uint32_t u32Div, u32RetValue;
/* Get system clock frequency */
u32HCLKFreq = CLK_GetHCLKFreq();
if (u32BusClock >= u32HCLKFreq)
{
/* Select PCLK as the clock source of QSPI */
CLK->CLKSEL2 = (CLK->CLKSEL2 & (~CLK_CLKSEL2_QSPI0SEL_Msk)) | CLK_CLKSEL2_QSPI0SEL_PCLK0;
}
/* Check clock source of QSPI */
if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_HXT)
{
u32ClkSrc = __HXT; /* Clock source is HXT */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PLL)
{
u32ClkSrc = CLK_GetPLLClockFreq(); /* Clock source is PLL */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PCLK0)
{
/* Clock source is PCLK0 */
u32ClkSrc = CLK_GetPCLK0Freq();
}
else
{
u32ClkSrc = __HIRC; /* Clock source is HIRC */
}
if (u32BusClock >= u32HCLKFreq)
{
/* Set DIVIDER = 0 */
qspi->CLKDIV = 0UL;
/* Return master peripheral clock rate */
u32RetValue = u32ClkSrc;
}
else if (u32BusClock >= u32ClkSrc)
{
/* Set DIVIDER = 0 */
qspi->CLKDIV = 0UL;
/* Return master peripheral clock rate */
u32RetValue = u32ClkSrc;
}
else if (u32BusClock == 0UL)
{
/* Set DIVIDER to the maximum value 0x1FF. f_qspi = f_qspi_clk_src / (DIVIDER + 1) */
qspi->CLKDIV |= QSPI_CLKDIV_DIVIDER_Msk;
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (0x1FFUL + 1UL));
}
else
{
u32Div = (((u32ClkSrc * 10UL) / u32BusClock + 5UL) / 10UL) - 1UL; /* Round to the nearest integer */
if (u32Div > 0x1FFUL)
{
u32Div = 0x1FFUL;
qspi->CLKDIV |= QSPI_CLKDIV_DIVIDER_Msk;
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (0x1FFUL + 1UL));
}
else
{
qspi->CLKDIV = (qspi->CLKDIV & (~QSPI_CLKDIV_DIVIDER_Msk)) | (u32Div << QSPI_CLKDIV_DIVIDER_Pos);
/* Return master peripheral clock rate */
u32RetValue = (u32ClkSrc / (u32Div + 1UL));
}
}
return u32RetValue;
}
/**
* @brief Configure FIFO threshold setting.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32TxThreshold Decides the TX FIFO threshold. It could be 0 ~ 7.
* @param[in] u32RxThreshold Decides the RX FIFO threshold. It could be 0 ~ 7.
* @return None
* @details Set TX FIFO threshold and RX FIFO threshold configurations.
*/
void QSPI_SetFIFO(QSPI_T *qspi, uint32_t u32TxThreshold, uint32_t u32RxThreshold)
{
qspi->FIFOCTL = (qspi->FIFOCTL & ~(QSPI_FIFOCTL_TXTH_Msk | QSPI_FIFOCTL_RXTH_Msk)) |
(u32TxThreshold << QSPI_FIFOCTL_TXTH_Pos) |
(u32RxThreshold << QSPI_FIFOCTL_RXTH_Pos);
}
/**
* @brief Get the actual frequency of QSPI bus clock. Only available in Master mode.
* @param[in] qspi The pointer of the specified QSPI module.
* @return Actual QSPI bus clock frequency in Hz.
* @details This function will calculate the actual QSPI bus clock rate according to the QSPInSEL and DIVIDER settings. Only available in Master mode.
*/
uint32_t QSPI_GetBusClock(QSPI_T *qspi)
{
uint32_t u32Div;
uint32_t u32ClkSrc;
/* Get DIVIDER setting */
u32Div = (qspi->CLKDIV & QSPI_CLKDIV_DIVIDER_Msk) >> QSPI_CLKDIV_DIVIDER_Pos;
/* Check clock source of QSPI */
if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_HXT)
{
u32ClkSrc = __HXT; /* Clock source is HXT */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PLL)
{
u32ClkSrc = CLK_GetPLLClockFreq(); /* Clock source is PLL */
}
else if ((CLK->CLKSEL2 & CLK_CLKSEL2_QSPI0SEL_Msk) == CLK_CLKSEL2_QSPI0SEL_PCLK0)
{
/* Clock source is PCLK0 */
u32ClkSrc = CLK_GetPCLK0Freq();
}
else
{
u32ClkSrc = __HIRC; /* Clock source is HIRC */
}
/* Return QSPI bus clock rate */
return (u32ClkSrc / (u32Div + 1UL));
}
/**
* @brief Enable interrupt function.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32Mask The combination of all related interrupt enable bits.
* Each bit corresponds to a interrupt enable bit.
* This parameter decides which interrupts will be enabled. It is combination of:
* - \ref QSPI_UNIT_INT_MASK
* - \ref QSPI_SSACT_INT_MASK
* - \ref QSPI_SSINACT_INT_MASK
* - \ref QSPI_SLVUR_INT_MASK
* - \ref QSPI_SLVBE_INT_MASK
* - \ref QSPI_SLVTO_INT_MASK
* - \ref QSPI_TXUF_INT_MASK
* - \ref QSPI_FIFO_TXTH_INT_MASK
* - \ref QSPI_FIFO_RXTH_INT_MASK
* - \ref QSPI_FIFO_RXOV_INT_MASK
* - \ref QSPI_FIFO_RXTO_INT_MASK
*
* @return None
* @details Enable QSPI related interrupts specified by u32Mask parameter.
*/
void QSPI_EnableInt(QSPI_T *qspi, uint32_t u32Mask)
{
/* Enable unit transfer interrupt flag */
if ((u32Mask & QSPI_UNIT_INT_MASK) == QSPI_UNIT_INT_MASK)
{
qspi->CTL |= QSPI_CTL_UNITIEN_Msk;
}
/* Enable slave selection signal active interrupt flag */
if ((u32Mask & QSPI_SSACT_INT_MASK) == QSPI_SSACT_INT_MASK)
{
qspi->SSCTL |= QSPI_SSCTL_SSACTIEN_Msk;
}
/* Enable slave selection signal inactive interrupt flag */
if ((u32Mask & QSPI_SSINACT_INT_MASK) == QSPI_SSINACT_INT_MASK)
{
qspi->SSCTL |= QSPI_SSCTL_SSINAIEN_Msk;
}
/* Enable slave TX under run interrupt flag */
if ((u32Mask & QSPI_SLVUR_INT_MASK) == QSPI_SLVUR_INT_MASK)
{
qspi->SSCTL |= QSPI_SSCTL_SLVURIEN_Msk;
}
/* Enable slave bit count error interrupt flag */
if ((u32Mask & QSPI_SLVBE_INT_MASK) == QSPI_SLVBE_INT_MASK)
{
qspi->SSCTL |= QSPI_SSCTL_SLVBEIEN_Msk;
}
/* Enable slave mode time-out interrupt flag */
if ((u32Mask & QSPI_SLVTO_INT_MASK) == QSPI_SLVTO_INT_MASK)
{
qspi->SSCTL |= QSPI_SSCTL_SLVTOIEN_Msk;
}
/* Enable slave TX underflow interrupt flag */
if ((u32Mask & QSPI_TXUF_INT_MASK) == QSPI_TXUF_INT_MASK)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_TXUFIEN_Msk;
}
/* Enable TX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_TXTH_INT_MASK) == QSPI_FIFO_TXTH_INT_MASK)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_TXTHIEN_Msk;
}
/* Enable RX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTH_INT_MASK) == QSPI_FIFO_RXTH_INT_MASK)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_RXTHIEN_Msk;
}
/* Enable RX overrun interrupt flag */
if ((u32Mask & QSPI_FIFO_RXOV_INT_MASK) == QSPI_FIFO_RXOV_INT_MASK)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_RXOVIEN_Msk;
}
/* Enable RX time-out interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTO_INT_MASK) == QSPI_FIFO_RXTO_INT_MASK)
{
qspi->FIFOCTL |= QSPI_FIFOCTL_RXTOIEN_Msk;
}
}
/**
* @brief Disable interrupt function.
* @param[in] qspi The pointer of the specified QSPI module.
* @param[in] u32Mask The combination of all related interrupt enable bits.
* Each bit corresponds to a interrupt bit.
* This parameter decides which interrupts will be disabled. It is combination of:
* - \ref QSPI_UNIT_INT_MASK
* - \ref QSPI_SSACT_INT_MASK
* - \ref QSPI_SSINACT_INT_MASK
* - \ref QSPI_SLVUR_INT_MASK
* - \ref QSPI_SLVBE_INT_MASK
* - \ref QSPI_SLVTO_INT_MASK
* - \ref QSPI_TXUF_INT_MASK
* - \ref QSPI_FIFO_TXTH_INT_MASK
* - \ref QSPI_FIFO_RXTH_INT_MASK
* - \ref QSPI_FIFO_RXOV_INT_MASK
* - \ref QSPI_FIFO_RXTO_INT_MASK
*
* @return None
* @details Disable QSPI related interrupts specified by u32Mask parameter.
*/
void QSPI_DisableInt(QSPI_T *qspi, uint32_t u32Mask)
{
/* Disable unit transfer interrupt flag */
if ((u32Mask & QSPI_UNIT_INT_MASK) == QSPI_UNIT_INT_MASK)
{
qspi->CTL &= ~QSPI_CTL_UNITIEN_Msk;
}
/* Disable slave selection signal active interrupt flag */
if ((u32Mask & QSPI_SSACT_INT_MASK) == QSPI_SSACT_INT_MASK)
{
qspi->SSCTL &= ~QSPI_SSCTL_SSACTIEN_Msk;
}
/* Disable slave selection signal inactive interrupt flag */
if ((u32Mask & QSPI_SSINACT_INT_MASK) == QSPI_SSINACT_INT_MASK)
{
qspi->SSCTL &= ~QSPI_SSCTL_SSINAIEN_Msk;
}
/* Disable slave TX under run interrupt flag */
if ((u32Mask & QSPI_SLVUR_INT_MASK) == QSPI_SLVUR_INT_MASK)
{
qspi->SSCTL &= ~QSPI_SSCTL_SLVURIEN_Msk;
}
/* Disable slave bit count error interrupt flag */
if ((u32Mask & QSPI_SLVBE_INT_MASK) == QSPI_SLVBE_INT_MASK)
{
qspi->SSCTL &= ~QSPI_SSCTL_SLVBEIEN_Msk;
}
/* Disable slave mode time-out interrupt flag */
if ((u32Mask & QSPI_SLVTO_INT_MASK) == QSPI_SLVTO_INT_MASK)
{
qspi->SSCTL &= ~QSPI_SSCTL_SLVTOIEN_Msk;
}
/* Disable slave TX underflow interrupt flag */
if ((u32Mask & QSPI_TXUF_INT_MASK) == QSPI_TXUF_INT_MASK)
{
qspi->FIFOCTL &= ~QSPI_FIFOCTL_TXUFIEN_Msk;
}
/* Disable TX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_TXTH_INT_MASK) == QSPI_FIFO_TXTH_INT_MASK)
{
qspi->FIFOCTL &= ~QSPI_FIFOCTL_TXTHIEN_Msk;
}
/* Disable RX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTH_INT_MASK) == QSPI_FIFO_RXTH_INT_MASK)
{
qspi->FIFOCTL &= ~QSPI_FIFOCTL_RXTHIEN_Msk;
}
/* Disable RX overrun interrupt flag */
if ((u32Mask & QSPI_FIFO_RXOV_INT_MASK) == QSPI_FIFO_RXOV_INT_MASK)
{
qspi->FIFOCTL &= ~QSPI_FIFOCTL_RXOVIEN_Msk;
}
/* Disable RX time-out interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTO_INT_MASK) == QSPI_FIFO_RXTO_INT_MASK)
{
qspi->FIFOCTL &= ~QSPI_FIFOCTL_RXTOIEN_Msk;
}
}
/**
* @brief Get interrupt flag.
* @param[in] qspi The pointer of the specified QSPI 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 QSPI_UNIT_INT_MASK
* - \ref QSPI_SSACT_INT_MASK
* - \ref QSPI_SSINACT_INT_MASK
* - \ref QSPI_SLVUR_INT_MASK
* - \ref QSPI_SLVBE_INT_MASK
* - \ref QSPI_SLVTO_INT_MASK
* - \ref QSPI_TXUF_INT_MASK
* - \ref QSPI_FIFO_TXTH_INT_MASK
* - \ref QSPI_FIFO_RXTH_INT_MASK
* - \ref QSPI_FIFO_RXOV_INT_MASK
* - \ref QSPI_FIFO_RXTO_INT_MASK
*
* @return Interrupt flags of selected sources.
* @details Get QSPI related interrupt flags specified by u32Mask parameter.
*/
uint32_t QSPI_GetIntFlag(QSPI_T *qspi, uint32_t u32Mask)
{
uint32_t u32IntFlag = 0U, u32TmpVal;
u32TmpVal = qspi->STATUS & QSPI_STATUS_UNITIF_Msk;
/* Check unit transfer interrupt flag */
if ((u32Mask & QSPI_UNIT_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_UNIT_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_SSACTIF_Msk;
/* Check slave selection signal active interrupt flag */
if ((u32Mask & QSPI_SSACT_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_SSACT_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_SSINAIF_Msk;
/* Check slave selection signal inactive interrupt flag */
if ((u32Mask & QSPI_SSINACT_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_SSINACT_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_SLVURIF_Msk;
/* Check slave TX under run interrupt flag */
if ((u32Mask & QSPI_SLVUR_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_SLVUR_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_SLVBEIF_Msk;
/* Check slave bit count error interrupt flag */
if ((u32Mask & QSPI_SLVBE_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_SLVBE_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_SLVTOIF_Msk;
/* Check slave mode time-out interrupt flag */
if ((u32Mask & QSPI_SLVTO_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_SLVTO_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_TXUFIF_Msk;
/* Check slave TX underflow interrupt flag */
if ((u32Mask & QSPI_TXUF_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_TXUF_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_TXTHIF_Msk;
/* Check TX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_TXTH_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_FIFO_TXTH_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_RXTHIF_Msk;
/* Check RX threshold interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTH_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_FIFO_RXTH_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_RXOVIF_Msk;
/* Check RX overrun interrupt flag */
if ((u32Mask & QSPI_FIFO_RXOV_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_FIFO_RXOV_INT_MASK;
}
u32TmpVal = qspi->STATUS & QSPI_STATUS_RXTOIF_Msk;
/* Check RX time-out interrupt flag */
if ((u32Mask & QSPI_FIFO_RXTO_INT_MASK) && (u32TmpVal))
{
u32IntFlag |= QSPI_FIFO_RXTO_INT_MASK;
}
return u32IntFlag;
}
/**
* @brief Clear interrupt flag.
* @param[in] qspi The pointer of the specified QSPI 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 QSPI_UNIT_INT_MASK
* - \ref QSPI_SSACT_INT_MASK
* - \ref QSPI_SSINACT_INT_MASK
* - \ref QSPI_SLVUR_INT_MASK
* - \ref QSPI_SLVBE_INT_MASK
* - \ref QSPI_SLVTO_INT_MASK
* - \ref QSPI_TXUF_INT_MASK
* - \ref QSPI_FIFO_RXOV_INT_MASK
* - \ref QSPI_FIFO_RXTO_INT_MASK
*
* @return None
* @details Clear QSPI related interrupt flags specified by u32Mask parameter.
*/
void QSPI_ClearIntFlag(QSPI_T *qspi, uint32_t u32Mask)
{
if (u32Mask & QSPI_UNIT_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_UNITIF_Msk; /* Clear unit transfer interrupt flag */
}
if (u32Mask & QSPI_SSACT_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_SSACTIF_Msk; /* Clear slave selection signal active interrupt flag */
}
if (u32Mask & QSPI_SSINACT_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_SSINAIF_Msk; /* Clear slave selection signal inactive interrupt flag */
}
if (u32Mask & QSPI_SLVUR_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_SLVURIF_Msk; /* Clear slave TX under run interrupt flag */
}
if (u32Mask & QSPI_SLVBE_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_SLVBEIF_Msk; /* Clear slave bit count error interrupt flag */
}
if (u32Mask & QSPI_SLVTO_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_SLVTOIF_Msk; /* Clear slave mode time-out interrupt flag */
}
if (u32Mask & QSPI_TXUF_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_TXUFIF_Msk; /* Clear slave TX underflow interrupt flag */
}
if (u32Mask & QSPI_FIFO_RXOV_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_RXOVIF_Msk; /* Clear RX overrun interrupt flag */
}
if (u32Mask & QSPI_FIFO_RXTO_INT_MASK)
{
qspi->STATUS = QSPI_STATUS_RXTOIF_Msk; /* Clear RX time-out interrupt flag */
}
}
/**
* @brief Get QSPI status.
* @param[in] qspi The pointer of the specified QSPI 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 QSPI_BUSY_MASK
* - \ref QSPI_RX_EMPTY_MASK
* - \ref QSPI_RX_FULL_MASK
* - \ref QSPI_TX_EMPTY_MASK
* - \ref QSPI_TX_FULL_MASK
* - \ref QSPI_TXRX_RESET_MASK
* - \ref QSPI_SPIEN_STS_MASK
* - \ref QSPI_SSLINE_STS_MASK
*
* @return Flags of selected sources.
* @details Get QSPI related status specified by u32Mask parameter.
*/
uint32_t QSPI_GetStatus(QSPI_T *qspi, uint32_t u32Mask)
{
uint32_t u32Flag = 0UL, u32TmpValue;
u32TmpValue = qspi->STATUS & QSPI_STATUS_BUSY_Msk;
/* Check busy status */
if ((u32Mask & QSPI_BUSY_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_BUSY_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_RXEMPTY_Msk;
/* Check RX empty flag */
if ((u32Mask & QSPI_RX_EMPTY_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_RX_EMPTY_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_RXFULL_Msk;
/* Check RX full flag */
if ((u32Mask & QSPI_RX_FULL_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_RX_FULL_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_TXEMPTY_Msk;
/* Check TX empty flag */
if ((u32Mask & QSPI_TX_EMPTY_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_TX_EMPTY_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_TXFULL_Msk;
/* Check TX full flag */
if ((u32Mask & QSPI_TX_FULL_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_TX_FULL_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_TXRXRST_Msk;
/* Check TX/RX reset flag */
if ((u32Mask & QSPI_TXRX_RESET_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_TXRX_RESET_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_SPIENSTS_Msk;
/* Check SPIEN flag */
if ((u32Mask & QSPI_SPIEN_STS_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_SPIEN_STS_MASK;
}
u32TmpValue = qspi->STATUS & QSPI_STATUS_SSLINE_Msk;
/* Check QSPIx_SS line status */
if ((u32Mask & QSPI_SSLINE_STS_MASK) && (u32TmpValue))
{
u32Flag |= QSPI_SSLINE_STS_MASK;
}
return u32Flag;
}
/*@}*/ /* end of group QSPI_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group QSPI_Driver */
/*@}*/ /* end of group Standard_Driver */
/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/