NUC472_NUC442_BSP V3.03.004
The Board Support Package for NUC472/NUC442
Macros | Functions | Variables
Collaboration diagram for SCUART Exported Functions:

Macros

#define SCUART_WRITE(sc, u8Data)
 Write Data to Tx data register. More...
 
#define SCUART_GET_TX_EMPTY(sc)
 Get TX FIFO empty flag status from register. More...
 
#define SCUART_GET_TX_FULL(sc)
 Get TX FIFO full flag status from register. More...
 
#define SCUART_WAIT_TX_EMPTY(sc)
 Wait specified smartcard port transmission complete. More...
 
#define SCUART_IS_TX_FULL(sc)
 Check specified smartcard port transmit FIFO is full or not. More...
 
#define SCUART_IS_TX_EMPTY(sc)
 Check specified smartcard port transmission is over. More...
 
#define SCUART_READ(sc)
 Read Rx data register. More...
 
#define SCUART_GET_RX_EMPTY(sc)
 Get RX FIFO empty flag status from register. More...
 
#define SCUART_GET_RX_FULL(sc)
 Get RX FIFO full flag status from register. More...
 
#define SCUART_IS_RX_READY(sc)
 Check if receive data number in FIFO reach FIFO trigger level or not. More...
 
#define SCUART_IS_RX_FULL(sc)
 Check specified smartcard port receive FIFO is full or not. More...
 
#define SCUART_ENABLE_INT(sc, u32Mask)
 Enable specified interrupts. More...
 
#define SCUART_DISABLE_INT(sc, u32Mask)
 Disable specified interrupts. More...
 
#define SCUART_GET_INT_FLAG(sc, u32Type)
 Get specified interrupt flag/status. More...
 
#define SCUART_CLR_INT_FLAG(sc, u32Type)
 Clear specified interrupt flag/status. More...
 
#define SCUART_GET_ERR_FLAG(sc)
 Get receive error flag/status. More...
 
#define SCUART_CLR_ERR_FLAG(sc, u32Mask)
 Clear specified receive error flag/status. More...
 

Functions

void SCUART_Close (SC_T *sc)
 The function is used to disable smartcard interface UART mode. More...
 
uint32_t SCUART_Open (SC_T *sc, uint32_t u32baudrate)
 This function use to enable smartcard module UART mode and set baudrate. More...
 
uint32_t SCUART_Read (SC_T *sc, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
 The function is used to read Rx data from RX FIFO. More...
 
uint32_t SCUART_SetLineConfig (SC_T *sc, uint32_t u32Baudrate, uint32_t u32DataWidth, uint32_t u32Parity, uint32_t u32StopBits)
 This function use to config smartcard UART mode line setting. More...
 
void SCUART_SetTimeoutCnt (SC_T *sc, uint32_t u32TOC)
 This function use to set receive timeout count. More...
 
uint32_t SCUART_Write (SC_T *sc, uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
 This function is to write data into transmit FIFO to send data out. More...
 

Variables

int32_t g_SCUART_i32ErrCode = 0
 

Detailed Description

Macro Definition Documentation

◆ SCUART_CLR_ERR_FLAG

#define SCUART_CLR_ERR_FLAG (   sc,
  u32Mask 
)

Clear specified receive error flag/status.

Parameters
[in]scThe base address of smartcard module
[in]u32MaskReceive error flag/status to clear, combination following values
Returns
None

Definition at line 242 of file scuart.h.

◆ SCUART_CLR_INT_FLAG

#define SCUART_CLR_INT_FLAG (   sc,
  u32Type 
)

Clear specified interrupt flag/status.

Parameters
[in]scThe base address of smartcard module
[in]u32TypeInterrupt flag/status to clear, could be the combination of following values
Returns
None

Definition at line 219 of file scuart.h.

◆ SCUART_DISABLE_INT

#define SCUART_DISABLE_INT (   sc,
  u32Mask 
)

Disable specified interrupts.

Parameters
[in]scThe base address of smartcard module
[in]u32MaskInterrupt masks to disable, a combination of following bits
Returns
None

Definition at line 192 of file scuart.h.

◆ SCUART_ENABLE_INT

#define SCUART_ENABLE_INT (   sc,
  u32Mask 
)

Enable specified interrupts.

Parameters
[in]scThe base address of smartcard module
[in]u32MaskInterrupt masks to enable, a combination of following bits
Returns
None

Definition at line 179 of file scuart.h.

◆ SCUART_GET_ERR_FLAG

#define SCUART_GET_ERR_FLAG (   sc)

Get receive error flag/status.

Parameters
[in]scThe base address of smartcard module
Returns
Current receive error status, could one of following errors:
Return values
SC_STATUS_PEF_MskParity error
SC_STATUS_FEF_MskFrame error
SC_STATUS_BEF_MskBreak error

Definition at line 230 of file scuart.h.

◆ SCUART_GET_INT_FLAG

#define SCUART_GET_INT_FLAG (   sc,
  u32Type 
)

Get specified interrupt flag/status.

Parameters
[in]scThe base address of smartcard module
[in]u32TypeInterrupt flag/status to check, could be one of following value
Returns
The status of specified interrupt
Return values
0Specified interrupt does not happened
1Specified interrupt happened

Definition at line 207 of file scuart.h.

◆ SCUART_GET_RX_EMPTY

#define SCUART_GET_RX_EMPTY (   sc)

Get RX FIFO empty flag status from register.

Parameters
[in]scThe base address of smartcard module
Returns
Receive FIFO empty status
Return values
0Receive FIFO is not empty
SC_STATUS_RXEMPTY_MskReceive FIFO is empty

Definition at line 132 of file scuart.h.

◆ SCUART_GET_RX_FULL

#define SCUART_GET_RX_FULL (   sc)

Get RX FIFO full flag status from register.

Parameters
[in]scThe base address of smartcard module
Returns
Receive FIFO full status
Return values
0Receive FIFO is not full
SC_STATUS_RXFULLF_MskReceive FIFO is full

Definition at line 143 of file scuart.h.

◆ SCUART_GET_TX_EMPTY

#define SCUART_GET_TX_EMPTY (   sc)

Get TX FIFO empty flag status from register.

Parameters
[in]scThe base address of smartcard module
Returns
Transmit FIFO empty status
Return values
0Transmit FIFO is not empty
SC_STATUS_TXEMPTY_MskTransmit FIFO is empty

Definition at line 72 of file scuart.h.

◆ SCUART_GET_TX_FULL

#define SCUART_GET_TX_FULL (   sc)

Get TX FIFO full flag status from register.

Parameters
[in]scThe base address of smartcard module
Returns
Transmit FIFO full status
Return values
0Transmit FIFO is not full
SC_STATUS_TXFULL_MskTransmit FIFO is full

Definition at line 82 of file scuart.h.

◆ SCUART_IS_RX_FULL

#define SCUART_IS_RX_FULL (   sc)

Check specified smartcard port receive FIFO is full or not.

Parameters
[in]scThe base address of smartcard module
Returns
Receive FIFO full status
Return values
0Receive FIFO is not full
1Receive FIFO is full

Definition at line 164 of file scuart.h.

◆ SCUART_IS_RX_READY

#define SCUART_IS_RX_READY (   sc)

Check if receive data number in FIFO reach FIFO trigger level or not.

Parameters
[in]scThe base address of smartcard module
Returns
Receive FIFO data status
Return values
0The number of bytes in receive FIFO is less than trigger level
1The number of bytes in receive FIFO equals or larger than trigger level
Note
If receive trigger level is not 1 byte, this macro return 0 does not necessary indicates there is no data in FIFO

Definition at line 154 of file scuart.h.

◆ SCUART_IS_TX_EMPTY

#define SCUART_IS_TX_EMPTY (   sc)

Check specified smartcard port transmission is over.

Parameters
[in]scThe base address of smartcard module
Returns
Transmit complete status
Return values
0Transmit is not complete
1Transmit complete

Definition at line 111 of file scuart.h.

◆ SCUART_IS_TX_FULL

#define SCUART_IS_TX_FULL (   sc)

Check specified smartcard port transmit FIFO is full or not.

Parameters
[in]scThe base address of smartcard module
Returns
Transmit FIFO full status
Return values
0Transmit FIFO is not full
1Transmit FIFO is full

Definition at line 101 of file scuart.h.

◆ SCUART_READ

#define SCUART_READ (   sc)

Read Rx data register.

Parameters
[in]scThe base address of smartcard module
Returns
The oldest data byte in RX FIFO

Definition at line 122 of file scuart.h.

◆ SCUART_WAIT_TX_EMPTY

#define SCUART_WAIT_TX_EMPTY (   sc)

Wait specified smartcard port transmission complete.

Parameters
[in]scThe base address of smartcard module
Returns
None
Note
This Macro blocks until transmit complete.

Definition at line 91 of file scuart.h.

◆ SCUART_WRITE

#define SCUART_WRITE (   sc,
  u8Data 
)

Write Data to Tx data register.

Parameters
[in]scThe base address of smartcard module.
[in]u8DataData byte to transmit
Returns
None

Definition at line 62 of file scuart.h.

Function Documentation

◆ SCUART_Close()

void SCUART_Close ( SC_T sc)

The function is used to disable smartcard interface UART mode.

Parameters
scThe base address of smartcard module.
Returns
None

Definition at line 34 of file scuart.c.

◆ SCUART_Open()

HIDDEN_SYMBOLS uint32_t SCUART_Open ( SC_T sc,
uint32_t  u32baudrate 
)

This function use to enable smartcard module UART mode and set baudrate.

Parameters
[in]scThe base address of smartcard module.
[in]u32baudrateTarget baudrate of smartcard module.
Returns
Actual baudrate of smartcard mode

This function configures character width to 8 bits, 1 stop bit, and no parity. And can use SCUART_SetLineConfig function to update these settings The baudrate clock source comes from SC_CLK/SC_DIV, where SC_CLK is controlled by SCxSEL in CLKSEL3 register, SC_DIV is controlled by SCxDIV in CLKDIV1 and CLKDIV2 register. Since the baudrate divider is 12-bit wide and must be larger than 4, (clock source / baudrate) must be larger or equal to 5 and smaller or equal to 4096. Otherwise this function cannot configure SCUART to work with target baudrate.

Definition at line 104 of file scuart.c.

◆ SCUART_Read()

uint32_t SCUART_Read ( SC_T sc,
uint8_t *  pu8RxBuf,
uint32_t  u32ReadBytes 
)

The function is used to read Rx data from RX FIFO.

Parameters
[in]scThe base address of smartcard module.
[in]pu8RxBufThe buffer to store receive the data
[in]u32ReadBytesTarget number of characters to receive
Returns
Actual character number reads to buffer
Note
This function does not block and return immediately if there's no data available

Definition at line 126 of file scuart.c.

◆ SCUART_SetLineConfig()

uint32_t SCUART_SetLineConfig ( SC_T sc,
uint32_t  u32Baudrate,
uint32_t  u32DataWidth,
uint32_t  u32Parity,
uint32_t  u32StopBits 
)

This function use to config smartcard UART mode line setting.

Parameters
[in]scThe base address of smartcard module.
[in]u32BaudrateTarget baudrate of smartcard module. If this value is 0, UART baudrate will not change.
[in]u32DataWidthThe data length, could be
[in]u32ParityThe parity setting, could be
[in]u32StopBitsThe stop bit length, could be
Returns
Actual baudrate of smartcard

The baudrate clock source comes from SC_CLK/SC_DIV, where SC_CLK is controlled by SCxSEL in CLKSEL3 register, SC_DIV is controlled by SCxDIV in CLKDIV1 and CLKDIV2 register. Since the baudrate divider is 12-bit wide and must be larger than 4, (clock source / baudrate) must be larger or equal to 5 and smaller or equal to 4096. Otherwise this function cannot configure SCUART to work with target baudrate.

Definition at line 166 of file scuart.c.

◆ SCUART_SetTimeoutCnt()

void SCUART_SetTimeoutCnt ( SC_T sc,
uint32_t  u32TOC 
)

This function use to set receive timeout count.

Parameters
[in]scThe base address of smartcard module.
[in]u32TOCRx timeout counter, using baudrate as counter unit. Valid range are 0~0x1FF, set this value to 0 will disable timeout counter
Returns
None

The time-out counter resets and starts counting whenever the RX buffer received a new data word. Once the counter decrease to 1 and no new data is received or CPU does not read any data from FIFO, a receiver time-out interrupt will be generated.

Definition at line 198 of file scuart.c.

◆ SCUART_Write()

uint32_t SCUART_Write ( SC_T sc,
uint8_t *  pu8TxBuf,
uint32_t  u32WriteBytes 
)

This function is to write data into transmit FIFO to send data out.

Parameters
[in]scThe base address of smartcard module.
[in]pu8TxBufThe buffer containing data to send to transmit FIFO.
[in]u32WriteBytesNumber of data to send.
Returns
Actual number of data put into SCUART Tx FIFO
Note
This function sets g_SCUART_i32ErrCode to SCUART_TIMEOUT_ERR if the Tx FIFO blocks longer than expected.

Definition at line 213 of file scuart.c.

Variable Documentation

◆ g_SCUART_i32ErrCode

int32_t g_SCUART_i32ErrCode = 0

SCUART global error code

Definition at line 27 of file scuart.c.