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|
/**************************************************************************//**
* @file usci_uart.c
* @version V3.00
* @brief M460 series USCI UART (UUART) driver source file
*
* @copyright SPDX-License-Identifier: Apache-2.0
* @copyright Copyright (C) 2021 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup USCI_UART_Driver USCI_UART Driver
@{
*/
/** @addtogroup USCI_UART_EXPORTED_FUNCTIONS USCI_UART Exported Functions
@{
*/
/**
* @brief Clear USCI_UART specified interrupt flag
*
* @param[in] uuart The pointer of the specified USCI_UART 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 UUART_ABR_INT_MASK
* - \ref UUART_RLS_INT_MASK
* - \ref UUART_BUF_RXOV_INT_MASK
* - \ref UUART_TXST_INT_MASK
* - \ref UUART_TXEND_INT_MASK
* - \ref UUART_RXST_INT_MASK
* - \ref UUART_RXEND_INT_MASK
*
* @return None
*
* @details The function is used to clear USCI_UART related interrupt flags specified by u32Mask parameter.
*/
void UUART_ClearIntFlag(UUART_T *uuart, uint32_t u32Mask)
{
if (u32Mask & UUART_ABR_INT_MASK) /* Clear Auto-baud Rate Interrupt */
{
uuart->PROTSTS = UUART_PROTSTS_ABRDETIF_Msk;
}
if (u32Mask & UUART_RLS_INT_MASK) /* Clear Receive Line Status Interrupt */
{
uuart->PROTSTS = (UUART_PROTSTS_BREAK_Msk | UUART_PROTSTS_FRMERR_Msk | UUART_PROTSTS_PARITYERR_Msk);
}
if (u32Mask & UUART_BUF_RXOV_INT_MASK) /* Clear Receive Buffer Over-run Error Interrupt */
{
uuart->BUFSTS = UUART_BUFSTS_RXOVIF_Msk;
}
if (u32Mask & UUART_TXST_INT_MASK) /* Clear Transmit Start Interrupt */
{
uuart->PROTSTS = UUART_PROTSTS_TXSTIF_Msk;
}
if (u32Mask & UUART_TXEND_INT_MASK) /* Clear Transmit End Interrupt */
{
uuart->PROTSTS = UUART_PROTSTS_TXENDIF_Msk;
}
if (u32Mask & UUART_RXST_INT_MASK) /* Clear Receive Start Interrupt */
{
uuart->PROTSTS = UUART_PROTSTS_RXSTIF_Msk;
}
if (u32Mask & UUART_RXEND_INT_MASK) /* Clear Receive End Interrupt */
{
uuart->PROTSTS = UUART_PROTSTS_RXENDIF_Msk;
}
}
/**
* @brief Get USCI_UART specified interrupt flag
*
* @param[in] uuart The pointer of the specified USCI_UART 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 UUART_ABR_INT_MASK
* - \ref UUART_RLS_INT_MASK
* - \ref UUART_BUF_RXOV_INT_MASK
* - \ref UUART_TXST_INT_MASK
* - \ref UUART_TXEND_INT_MASK
* - \ref UUART_RXST_INT_MASK
* - \ref UUART_RXEND_INT_MASK
*
* @return Interrupt flags of selected sources.
*
* @details The function is used to get USCI_UART related interrupt flags specified by u32Mask parameter.
*/
uint32_t UUART_GetIntFlag(UUART_T *uuart, uint32_t u32Mask)
{
uint32_t u32IntFlag = 0ul;
uint32_t u32Tmp1, u32Tmp2;
/* Check Auto-baud Rate Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_ABR_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & UUART_PROTSTS_ABRDETIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_ABR_INT_MASK;
}
/* Check Receive Line Status Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_RLS_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & (UUART_PROTSTS_BREAK_Msk | UUART_PROTSTS_FRMERR_Msk | UUART_PROTSTS_PARITYERR_Msk));
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_RLS_INT_MASK;
}
/* Check Receive Buffer Over-run Error Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_BUF_RXOV_INT_MASK);
u32Tmp2 = (uuart->BUFSTS & UUART_BUFSTS_RXOVIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_BUF_RXOV_INT_MASK;
}
/* Check Transmit Start Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_TXST_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & UUART_PROTSTS_TXSTIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_TXST_INT_MASK;
}
/* Check Transmit End Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_TXEND_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & UUART_PROTSTS_TXENDIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_TXEND_INT_MASK;
}
/* Check Receive Start Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_RXST_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & UUART_PROTSTS_RXSTIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_RXST_INT_MASK;
}
/* Check Receive End Interrupt Flag */
u32Tmp1 = (u32Mask & UUART_RXEND_INT_MASK);
u32Tmp2 = (uuart->PROTSTS & UUART_PROTSTS_RXENDIF_Msk);
if (u32Tmp1 && u32Tmp2)
{
u32IntFlag |= UUART_RXEND_INT_MASK;
}
return u32IntFlag;
}
/**
* @brief Disable USCI_UART function mode
*
* @param[in] uuart The pointer of the specified USCI_UART module.
*
* @return None
*
* @details The function is used to disable USCI_UART function mode.
*/
void UUART_Close(UUART_T *uuart)
{
uuart->CTL = 0ul;
}
/**
* @brief Disable interrupt function.
*
* @param[in] uuart The pointer of the specified USCI_UART 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 disabled. It is combination of:
* - \ref UUART_ABR_INT_MASK
* - \ref UUART_RLS_INT_MASK
* - \ref UUART_BUF_RXOV_INT_MASK
* - \ref UUART_TXST_INT_MASK
* - \ref UUART_TXEND_INT_MASK
* - \ref UUART_RXST_INT_MASK
* - \ref UUART_RXEND_INT_MASK
*
* @return None
*
* @details The function is used to disabled USCI_UART related interrupts specified by u32Mask parameter.
*/
void UUART_DisableInt(UUART_T *uuart, uint32_t u32Mask)
{
/* Disable Auto-baud rate interrupt flag */
if ((u32Mask & UUART_ABR_INT_MASK) == UUART_ABR_INT_MASK)
{
uuart->PROTIEN &= ~UUART_PROTIEN_ABRIEN_Msk;
}
/* Disable receive line status interrupt flag */
if ((u32Mask & UUART_RLS_INT_MASK) == UUART_RLS_INT_MASK)
{
uuart->PROTIEN &= ~UUART_PROTIEN_RLSIEN_Msk;
}
/* Disable RX overrun interrupt flag */
if ((u32Mask & UUART_BUF_RXOV_INT_MASK) == UUART_BUF_RXOV_INT_MASK)
{
uuart->BUFCTL &= ~UUART_BUFCTL_RXOVIEN_Msk;
}
/* Disable TX start interrupt flag */
if ((u32Mask & UUART_TXST_INT_MASK) == UUART_TXST_INT_MASK)
{
uuart->INTEN &= ~UUART_INTEN_TXSTIEN_Msk;
}
/* Disable TX end interrupt flag */
if ((u32Mask & UUART_TXEND_INT_MASK) == UUART_TXEND_INT_MASK)
{
uuart->INTEN &= ~UUART_INTEN_TXENDIEN_Msk;
}
/* Disable RX start interrupt flag */
if ((u32Mask & UUART_RXST_INT_MASK) == UUART_RXST_INT_MASK)
{
uuart->INTEN &= ~UUART_INTEN_RXSTIEN_Msk;
}
/* Disable RX end interrupt flag */
if ((u32Mask & UUART_RXEND_INT_MASK) == UUART_RXEND_INT_MASK)
{
uuart->INTEN &= ~UUART_INTEN_RXENDIEN_Msk;
}
}
/**
* @brief Enable interrupt function.
*
* @param[in] uuart The pointer of the specified USCI_UART 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 UUART_ABR_INT_MASK
* - \ref UUART_RLS_INT_MASK
* - \ref UUART_BUF_RXOV_INT_MASK
* - \ref UUART_TXST_INT_MASK
* - \ref UUART_TXEND_INT_MASK
* - \ref UUART_RXST_INT_MASK
* - \ref UUART_RXEND_INT_MASK
*
* @return None
*
* @details The function is used to enable USCI_UART related interrupts specified by u32Mask parameter.
*/
void UUART_EnableInt(UUART_T *uuart, uint32_t u32Mask)
{
/* Enable Auto-baud rate interrupt flag */
if ((u32Mask & UUART_ABR_INT_MASK) == UUART_ABR_INT_MASK)
{
uuart->PROTIEN |= UUART_PROTIEN_ABRIEN_Msk;
}
/* Enable receive line status interrupt flag */
if ((u32Mask & UUART_RLS_INT_MASK) == UUART_RLS_INT_MASK)
{
uuart->PROTIEN |= UUART_PROTIEN_RLSIEN_Msk;
}
/* Enable RX overrun interrupt flag */
if ((u32Mask & UUART_BUF_RXOV_INT_MASK) == UUART_BUF_RXOV_INT_MASK)
{
uuart->BUFCTL |= UUART_BUFCTL_RXOVIEN_Msk;
}
/* Enable TX start interrupt flag */
if ((u32Mask & UUART_TXST_INT_MASK) == UUART_TXST_INT_MASK)
{
uuart->INTEN |= UUART_INTEN_TXSTIEN_Msk;
}
/* Enable TX end interrupt flag */
if ((u32Mask & UUART_TXEND_INT_MASK) == UUART_TXEND_INT_MASK)
{
uuart->INTEN |= UUART_INTEN_TXENDIEN_Msk;
}
/* Enable RX start interrupt flag */
if ((u32Mask & UUART_RXST_INT_MASK) == UUART_RXST_INT_MASK)
{
uuart->INTEN |= UUART_INTEN_RXSTIEN_Msk;
}
/* Enable RX end interrupt flag */
if ((u32Mask & UUART_RXEND_INT_MASK) == UUART_RXEND_INT_MASK)
{
uuart->INTEN |= UUART_INTEN_RXENDIEN_Msk;
}
}
/**
* @brief Open and set USCI_UART function
*
* @param[in] uuart The pointer of the specified USCI_UART module.
* @param[in] u32baudrate The baud rate of USCI_UART module.
*
* @return Real baud rate of USCI_UART module.
*
* @details This function use to enable USCI_UART function and set baud-rate.
*/
uint32_t UUART_Open(UUART_T *uuart, uint32_t u32baudrate)
{
uint32_t u32PCLKFreq, u32PDSCnt, u32DSCnt, u32ClkDiv;
uint32_t u32Tmp, u32Tmp2, u32Min, u32MinClkDiv, u32MinDSCnt;
uint32_t u32Div;
/* Get PCLK frequency */
u32PCLKFreq = CLK_GetPCLK0Freq();
/* Calculate baud rate divider */
u32Div = u32PCLKFreq / u32baudrate;
u32Tmp = (u32PCLKFreq / u32Div) - u32baudrate;
u32Tmp2 = u32baudrate - (u32PCLKFreq / (u32Div + 1ul));
if (u32Tmp >= u32Tmp2) u32Div = u32Div + 1ul;
if (u32Div >= 65536ul)
{
/* Set the smallest baud rate that USCI_UART can generate */
u32PDSCnt = 0x4ul;
u32MinDSCnt = 0x10ul;
u32MinClkDiv = 0x400ul;
}
else
{
u32Tmp = 0x400ul * 0x10ul;
for (u32PDSCnt = 1ul; u32PDSCnt <= 0x04ul; u32PDSCnt++)
{
if (u32Div <= (u32Tmp * u32PDSCnt)) break;
}
if (u32PDSCnt > 0x4ul) u32PDSCnt = 0x4ul;
u32Div = u32Div / u32PDSCnt;
/* Find best solution */
u32Min = (uint32_t) - 1;
u32MinDSCnt = 0ul;
u32MinClkDiv = 0ul;
u32Tmp = 0ul;
for (u32DSCnt = 6ul; u32DSCnt <= 0x10ul; u32DSCnt++) /* DSCNT could be 0x5~0xF */
{
u32ClkDiv = u32Div / u32DSCnt;
if (u32ClkDiv > 0x400ul)
{
u32ClkDiv = 0x400ul;
u32Tmp = u32Div - (u32ClkDiv * u32DSCnt);
u32Tmp2 = u32Tmp + 1ul;
}
else
{
u32Tmp = u32Div - (u32ClkDiv * u32DSCnt);
u32Tmp2 = ((u32ClkDiv + 1ul) * u32DSCnt) - u32Div;
}
if (u32Tmp >= u32Tmp2)
{
u32ClkDiv = u32ClkDiv + 1ul;
}
else u32Tmp2 = u32Tmp;
if (u32Tmp2 < u32Min)
{
u32Min = u32Tmp2;
u32MinDSCnt = u32DSCnt;
u32MinClkDiv = u32ClkDiv;
/* Break when get good results */
if (u32Min == 0ul)
{
break;
}
}
}
}
/* Enable USCI_UART protocol */
uuart->CTL &= ~UUART_CTL_FUNMODE_Msk;
uuart->CTL = 2ul << UUART_CTL_FUNMODE_Pos;
/* Set USCI_UART line configuration */
uuart->LINECTL = UUART_WORD_LEN_8 | UUART_LINECTL_LSB_Msk;
uuart->DATIN0 = (2ul << UUART_DATIN0_EDGEDET_Pos); /* Set falling edge detection */
/* Set USCI_UART baud rate */
uuart->BRGEN = ((u32MinClkDiv - 1ul) << UUART_BRGEN_CLKDIV_Pos) |
((u32MinDSCnt - 1ul) << UUART_BRGEN_DSCNT_Pos) |
((u32PDSCnt - 1ul) << UUART_BRGEN_PDSCNT_Pos);
uuart->PROTCTL |= UUART_PROTCTL_PROTEN_Msk;
return (u32PCLKFreq / u32PDSCnt / u32MinDSCnt / u32MinClkDiv);
}
/**
* @brief Read USCI_UART data
*
* @param[in] uuart The pointer of the specified USCI_UART module.
* @param[in] pu8RxBuf The buffer to receive the data of receive buffer.
* @param[in] u32ReadBytes The read bytes number of data.
*
* @return Receive byte count
*
* @details The function is used to read Rx data from RX buffer and the data will be stored in pu8RxBuf.
*/
uint32_t UUART_Read(UUART_T *uuart, uint8_t pu8RxBuf[], uint32_t u32ReadBytes)
{
uint32_t u32Count, u32delayno;
for (u32Count = 0ul; u32Count < u32ReadBytes; u32Count++)
{
u32delayno = 0ul;
while (uuart->BUFSTS & UUART_BUFSTS_RXEMPTY_Msk) /* Check RX empty => failed */
{
u32delayno++;
if (u32delayno >= 0x40000000ul)
{
break;
}
}
if (u32delayno >= 0x40000000ul)
{
break;
}
pu8RxBuf[u32Count] = (uint8_t)uuart->RXDAT; /* Get Data from USCI RX */
}
return u32Count;
}
/**
* @brief Set USCI_UART line configuration
*
* @param[in] uuart The pointer of the specified USCI_UART module.
* @param[in] u32baudrate The register value of baud rate of USCI_UART module.
* If u32baudrate = 0, USCI_UART baud rate will not change.
* @param[in] u32data_width The data length of USCI_UART module.
* - \ref UUART_WORD_LEN_6
* - \ref UUART_WORD_LEN_7
* - \ref UUART_WORD_LEN_8
* - \ref UUART_WORD_LEN_9
* @param[in] u32parity The parity setting (none/odd/even) of USCI_UART module.
* - \ref UUART_PARITY_NONE
* - \ref UUART_PARITY_ODD
* - \ref UUART_PARITY_EVEN
* @param[in] u32stop_bits The stop bit length (1/2 bit) of USCI_UART module.
* - \ref UUART_STOP_BIT_1
* - \ref UUART_STOP_BIT_2
*
* @return Real baud rate of USCI_UART module.
*
* @details This function use to config USCI_UART line setting.
*/
uint32_t UUART_SetLine_Config(UUART_T *uuart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
{
uint32_t u32PCLKFreq, u32PDSCnt, u32DSCnt, u32ClkDiv;
uint32_t u32Tmp, u32Tmp2, u32Min, u32MinClkDiv, u32MinDSCnt;
uint32_t u32Div;
/* Get PCLK frequency */
u32PCLKFreq = CLK_GetPCLK0Freq();
if (u32baudrate != 0ul)
{
/* Calculate baud rate divider */
u32Div = u32PCLKFreq / u32baudrate;
u32Tmp = (u32PCLKFreq / u32Div) - u32baudrate;
u32Tmp2 = u32baudrate - (u32PCLKFreq / (u32Div + 1ul));
if (u32Tmp >= u32Tmp2) u32Div = u32Div + 1ul;
if (u32Div >= 65536ul)
{
/* Set the smallest baud rate that USCI_UART can generate */
u32PDSCnt = 0x4ul;
u32MinDSCnt = 0x10ul;
u32MinClkDiv = 0x400ul;
}
else
{
u32Tmp = 0x400ul * 0x10ul;
for (u32PDSCnt = 1ul; u32PDSCnt <= 0x04ul; u32PDSCnt++)
{
if (u32Div <= (u32Tmp * u32PDSCnt)) break;
}
if (u32PDSCnt > 0x4ul) u32PDSCnt = 0x4ul;
u32Div = u32Div / u32PDSCnt;
/* Find best solution */
u32Min = (uint32_t) - 1;
u32MinDSCnt = 0ul;
u32MinClkDiv = 0ul;
for (u32DSCnt = 6ul; u32DSCnt <= 0x10ul; u32DSCnt++) /* DSCNT could be 0x5~0xF */
{
u32ClkDiv = u32Div / u32DSCnt;
if (u32ClkDiv > 0x400ul)
{
u32ClkDiv = 0x400ul;
u32Tmp = u32Div - (u32ClkDiv * u32DSCnt);
u32Tmp2 = u32Tmp + 1ul;
}
else
{
u32Tmp = u32Div - (u32ClkDiv * u32DSCnt);
u32Tmp2 = ((u32ClkDiv + 1ul) * u32DSCnt) - u32Div;
}
if (u32Tmp >= u32Tmp2)
{
u32ClkDiv = u32ClkDiv + 1ul;
}
else u32Tmp2 = u32Tmp;
if (u32Tmp2 < u32Min)
{
u32Min = u32Tmp2;
u32MinDSCnt = u32DSCnt;
u32MinClkDiv = u32ClkDiv;
/* Break when get good results */
if (u32Min == 0ul)
{
break;
}
}
}
}
/* Set USCI_UART baud rate */
uuart->BRGEN = ((u32MinClkDiv - 1ul) << UUART_BRGEN_CLKDIV_Pos) |
((u32MinDSCnt - 1ul) << UUART_BRGEN_DSCNT_Pos) |
((u32PDSCnt - 1ul) << UUART_BRGEN_PDSCNT_Pos);
}
else
{
u32PDSCnt = ((uuart->BRGEN & UUART_BRGEN_PDSCNT_Msk) >> UUART_BRGEN_PDSCNT_Pos) + 1ul;
u32MinDSCnt = ((uuart->BRGEN & UUART_BRGEN_DSCNT_Msk) >> UUART_BRGEN_DSCNT_Pos) + 1ul;
u32MinClkDiv = ((uuart->BRGEN & UUART_BRGEN_CLKDIV_Msk) >> UUART_BRGEN_CLKDIV_Pos) + 1ul;
}
/* Set USCI_UART line configuration */
uuart->LINECTL = (uuart->LINECTL & ~UUART_LINECTL_DWIDTH_Msk) | u32data_width;
uuart->PROTCTL = (uuart->PROTCTL & ~(UUART_PROTCTL_STICKEN_Msk | UUART_PROTCTL_EVENPARITY_Msk |
UUART_PROTCTL_PARITYEN_Msk)) | u32parity;
uuart->PROTCTL = (uuart->PROTCTL & ~UUART_PROTCTL_STOPB_Msk) | u32stop_bits;
return (u32PCLKFreq / u32PDSCnt / u32MinDSCnt / u32MinClkDiv);
}
/**
* @brief Write USCI_UART data
*
* @param[in] uuart The pointer of the specified USCI_UART module.
* @param[in] pu8TxBuf The buffer to send the data to USCI transmission buffer.
* @param[out] u32WriteBytes The byte number of data.
*
* @return Transfer byte count
*
* @details The function is to write data into TX buffer to transmit data by USCI_UART.
*/
uint32_t UUART_Write(UUART_T *uuart, uint8_t pu8TxBuf[], uint32_t u32WriteBytes)
{
uint32_t u32Count, u32delayno;
for (u32Count = 0ul; u32Count != u32WriteBytes; u32Count++)
{
u32delayno = 0ul;
while ((uuart->BUFSTS & UUART_BUFSTS_TXEMPTY_Msk) == 0ul) /* Wait Tx empty */
{
u32delayno++;
if (u32delayno >= 0x40000000ul)
{
break;
}
}
if (u32delayno >= 0x40000000ul)
{
break;
}
uuart->TXDAT = (uint8_t)pu8TxBuf[u32Count]; /* Send USCI_UART Data to buffer */
}
return u32Count;
}
/**
* @brief Enable USCI_UART Wake-up Function
*
* @param[in] uuart The pointer of the specified USCI_UART module.
* @param[in] u32WakeupMode The wakeup mode of USCI_UART module.
* - \ref UUART_PROTCTL_DATWKEN_Msk : Data wake-up Mode
* - \ref UUART_PROTCTL_CTSWKEN_Msk : nCTS wake-up Mode
*
* @return None
*
* @details The function is used to enable Wake-up function of USCI_UART.
*/
void UUART_EnableWakeup(UUART_T *uuart, uint32_t u32WakeupMode)
{
uuart->PROTCTL |= u32WakeupMode;
uuart->WKCTL |= UUART_WKCTL_WKEN_Msk;
}
/**
* @brief Disable USCI_UART Wake-up Function
*
* @param[in] uuart The pointer of the specified USCI_UART module.
*
* @return None
*
* @details The function is used to disable Wake-up function of USCI_UART.
*/
void UUART_DisableWakeup(UUART_T *uuart)
{
uuart->PROTCTL &= ~(UUART_PROTCTL_DATWKEN_Msk | UUART_PROTCTL_CTSWKEN_Msk);
uuart->WKCTL &= ~UUART_WKCTL_WKEN_Msk;
}
/**
* @brief Enable USCI_UART auto flow control
*
* @param[in] uuart The pointer of the specified USCI_UART module.
*
* @return None
*
* @details The function is used to enable USCI_UART auto flow control.
*/
void UUART_EnableFlowCtrl(UUART_T *uuart)
{
/* Set RTS signal is low level active */
uuart->LINECTL &= ~UUART_LINECTL_CTLOINV_Msk;
/* Set CTS signal is low level active */
uuart->CTLIN0 &= ~UUART_CTLIN0_ININV_Msk;
/* Enable CTS and RTS auto flow control function */
uuart->PROTCTL |= UUART_PROTCTL_RTSAUTOEN_Msk | UUART_PROTCTL_CTSAUTOEN_Msk;
}
/**
* @brief Disable USCI_UART auto flow control
*
* @param[in] uuart The pointer of the specified USCI_UART module.
*
* @return None
*
* @details The function is used to disable USCI_UART auto flow control.
*/
void UUART_DisableFlowCtrl(UUART_T *uuart)
{
/* Disable CTS and RTS auto flow control function */
uuart->PROTCTL &= ~(UUART_PROTCTL_RTSAUTOEN_Msk | UUART_PROTCTL_CTSAUTOEN_Msk);
}
/*@}*/ /* end of group USCI_UART_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group USCI_UART_Driver */
/*@}*/ /* end of group Standard_Driver */
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