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Public Member Functions
RawSerial Class Reference

A serial port (UART) for communication with other serial devices This is a variation of the Serial class that doesn't use streams, thus making it safe to use in interrupt handlers with the RTOS. More...

#include <RawSerial.h>

Inheritance diagram for RawSerial:
SerialBase NonCopyable< RawSerial > NonCopyable< SerialBase > GreenteaSerial

Public Member Functions

 RawSerial (PinName tx, PinName rx, int baud=MBED_CONF_PLATFORM_DEFAULT_SERIAL_BAUD_RATE)
 Create a RawSerial port, connected to the specified transmit and receive pins, with the specified baud. More...
 
int putc (int c)
 Write a char to the serial port. More...
 
int getc ()
 Read a char from the serial port. More...
 
int puts (const char *str)
 Write a string to the serial port. More...
 
void baud (int baudrate)
 Set the baud rate of the serial port. More...
 
void format (int bits=8, Parity parity=SerialBase::None, int stop_bits=1)
 Set the transmission format used by the serial port. More...
 
int readable ()
 Determine if there is a character available to read. More...
 
int writeable ()
 Determine if there is space available to write a character. More...
 
void attach (Callback< void()> func, IrqType type=RxIrq)
 Attach a function to call whenever a serial interrupt is generated. More...
 
template<typename T >
void attach (T *obj, void(T::*method)(), IrqType type=RxIrq)
 Attach a member function to call whenever a serial interrupt is generated. More...
 
template<typename T >
void attach (T *obj, void(*method)(T *), IrqType type=RxIrq)
 Attach a member function to call whenever a serial interrupt is generated. More...
 
void set_break ()
 Generate a break condition on the serial line NOTE: Clear break needs to run at least one frame after set_break is called. More...
 
void clear_break ()
 Clear a break condition on the serial line NOTE: Should be run at least one frame after set_break is called. More...
 
void send_break ()
 Generate a break condition on the serial line. More...
 
void set_flow_control (Flow type, PinName flow1=NC, PinName flow2=NC)
 Set the flow control type on the serial port. More...
 
int write (const uint8_t *buffer, int length, const event_callback_t &callback, int event=SERIAL_EVENT_TX_COMPLETE)
 Begin asynchronous write using 8bit buffer. More...
 
int write (const uint16_t *buffer, int length, const event_callback_t &callback, int event=SERIAL_EVENT_TX_COMPLETE)
 Begin asynchronous write using 16bit buffer. More...
 
void abort_write ()
 Abort the on-going write transfer. More...
 
int read (uint8_t *buffer, int length, const event_callback_t &callback, int event=SERIAL_EVENT_RX_COMPLETE, unsigned char char_match=SERIAL_RESERVED_CHAR_MATCH)
 Begin asynchronous reading using 8bit buffer. More...
 
int read (uint16_t *buffer, int length, const event_callback_t &callback, int event=SERIAL_EVENT_RX_COMPLETE, unsigned char char_match=SERIAL_RESERVED_CHAR_MATCH)
 Begin asynchronous reading using 16bit buffer. More...
 
void abort_read ()
 Abort the on-going read transfer. More...
 
int set_dma_usage_tx (DMAUsage usage)
 Configure DMA usage suggestion for non-blocking TX transfers. More...
 
int set_dma_usage_rx (DMAUsage usage)
 Configure DMA usage suggestion for non-blocking RX transfers. More...
 

Detailed Description

A serial port (UART) for communication with other serial devices This is a variation of the Serial class that doesn't use streams, thus making it safe to use in interrupt handlers with the RTOS.

Can be used for Full Duplex communication, or Simplex by specifying one pin as NC (Not Connected)

Note
Synchronization level: Not protected

Example:

// Send a char to the PC
#include "mbed.h"
RawSerial pc(USBTX, USBRX);
int main() {
pc.putc('A');
}

Definition at line 56 of file RawSerial.h.

Constructor & Destructor Documentation

RawSerial ( PinName  tx,
PinName  rx,
int  baud = MBED_CONF_PLATFORM_DEFAULT_SERIAL_BAUD_RATE 
)

Create a RawSerial port, connected to the specified transmit and receive pins, with the specified baud.

Parameters
txTransmit pin
rxReceive pin
baudThe baud rate of the serial port (optional, defaults to MBED_CONF_PLATFORM_DEFAULT_SERIAL_BAUD_RATE)
Note
Either tx or rx may be specified as NC if unused

Member Function Documentation

void abort_read ( )
inherited

Abort the on-going read transfer.

It is safe to call abort_read() when there is no on-going transaction.

void abort_write ( )
inherited

Abort the on-going write transfer.

It is safe to call abort_write() when there is no on-going transaction.

void attach ( Callback< void()>  func,
IrqType  type = RxIrq 
)
inherited

Attach a function to call whenever a serial interrupt is generated.

Parameters
funcA pointer to a void function, or 0 to set as none
typeWhich serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty)
void attach ( T *  obj,
void(T::*)()  method,
IrqType  type = RxIrq 
)
inherited

Attach a member function to call whenever a serial interrupt is generated.

Parameters
objpointer to the object to call the member function on
methodpointer to the member function to be called
typeWhich serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty)
Deprecated:
The attach function does not support cv-qualifiers. Replaced by attach(callback(obj, method), type).

Definition at line 118 of file SerialBase.h.

void attach ( T *  obj,
void(*)(T *)  method,
IrqType  type = RxIrq 
)
inherited

Attach a member function to call whenever a serial interrupt is generated.

Parameters
objpointer to the object to call the member function on
methodpointer to the member function to be called
typeWhich serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty)
Deprecated:
The attach function does not support cv-qualifiers. Replaced by attach(callback(obj, method), type).

Definition at line 136 of file SerialBase.h.

void baud ( int  baudrate)
inherited

Set the baud rate of the serial port.

Parameters
baudrateThe baudrate of the serial port (default = 9600).
void clear_break ( )
inherited

Clear a break condition on the serial line NOTE: Should be run at least one frame after set_break is called.

void format ( int  bits = 8,
Parity  parity = SerialBase::None,
int  stop_bits = 1 
)
inherited

Set the transmission format used by the serial port.

Parameters
bitsThe number of bits in a word (5-8; default = 8)
parityThe parity used (SerialBase::None, SerialBase::Odd, SerialBase::Even, SerialBase::Forced1, SerialBase::Forced0; default = SerialBase::None)
stop_bitsThe number of stop bits (1 or 2; default = 1)
int getc ( )

Read a char from the serial port.

Returns
The char read from the serial port
int putc ( int  c)

Write a char to the serial port.

Parameters
cThe char to write
Returns
The written char or -1 if an error occurred
int puts ( const char *  str)

Write a string to the serial port.

Parameters
strThe string to write
Returns
0 if the write succeeds, EOF for error
int read ( uint8_t *  buffer,
int  length,
const event_callback_t callback,
int  event = SERIAL_EVENT_RX_COMPLETE,
unsigned char  char_match = SERIAL_RESERVED_CHAR_MATCH 
)
inherited

Begin asynchronous reading using 8bit buffer.

The read operation ends with any of the enabled events and invokes registered callback function (which can be NULL to not receive callback at all). Events that are not enabled by event argument are simply ignored. Operation has to be ended explicitly by calling abort_read() when no events are enabled. This function locks the deep sleep until any event has occurred.

Parameters
bufferThe buffer where received data will be stored
lengthThe buffer length in bytes
callbackThe event callback function
eventThe logical OR of RX events that should end operation
char_matchThe matching character
Returns
Zero if new transaction was started, -1 if transaction is already on-going
int read ( uint16_t *  buffer,
int  length,
const event_callback_t callback,
int  event = SERIAL_EVENT_RX_COMPLETE,
unsigned char  char_match = SERIAL_RESERVED_CHAR_MATCH 
)
inherited

Begin asynchronous reading using 16bit buffer.

The read operation ends with any of the enabled events and invokes registered callback function (which can be NULL to not receive callback at all). Events that are not enabled by event argument are simply ignored. Operation has to be ended explicitly by calling abort_read() when no events are enabled. This function locks the deep sleep until any event has occurred.

Parameters
bufferThe buffer where received data will be stored
lengthThe buffer length in bytes
callbackThe event callback function
eventThe logical OR of RX events that should end operation
char_matchThe matching character
Returns
Zero if new transaction was started, -1 if transaction is already on-going
int readable ( )
inherited

Determine if there is a character available to read.

Returns
1 if there is a character available to read, 0 otherwise
void send_break ( )
inherited

Generate a break condition on the serial line.

void set_break ( )
inherited

Generate a break condition on the serial line NOTE: Clear break needs to run at least one frame after set_break is called.

int set_dma_usage_rx ( DMAUsage  usage)
inherited

Configure DMA usage suggestion for non-blocking RX transfers.

Parameters
usageThe usage DMA hint for peripheral
Returns
Zero if the usage was set, -1 if a transaction is on-going
int set_dma_usage_tx ( DMAUsage  usage)
inherited

Configure DMA usage suggestion for non-blocking TX transfers.

Parameters
usageThe usage DMA hint for peripheral
Returns
Zero if the usage was set, -1 if a transaction is on-going
void set_flow_control ( Flow  type,
PinName  flow1 = NC,
PinName  flow2 = NC 
)
inherited

Set the flow control type on the serial port.

Parameters
typethe flow control type (Disabled, RTS, CTS, RTSCTS)
flow1the first flow control pin (RTS for RTS or RTSCTS, CTS for CTS)
flow2the second flow control pin (CTS for RTSCTS)
int write ( const uint8_t *  buffer,
int  length,
const event_callback_t callback,
int  event = SERIAL_EVENT_TX_COMPLETE 
)
inherited

Begin asynchronous write using 8bit buffer.

The write operation ends with any of the enabled events and invokes registered callback function (which can be NULL to not receive callback at all). Events that are not enabled by event argument are simply ignored. Operation has to be ended explicitly by calling abort_write() when no events are enabled. This function locks the deep sleep until any event has occurred.

Parameters
bufferThe buffer where received data will be stored
lengthThe buffer length in bytes
callbackThe event callback function
eventThe logical OR of TX events that should end operation
Returns
Zero if new transaction was started, -1 if transaction is already on-going
int write ( const uint16_t *  buffer,
int  length,
const event_callback_t callback,
int  event = SERIAL_EVENT_TX_COMPLETE 
)
inherited

Begin asynchronous write using 16bit buffer.

The write operation ends with any of the enabled events and invokes registered callback function (which can be NULL to not receive callback at all). Events that are not enabled by event argument are simply ignored. Operation has to be ended explicitly by calling abort_write() when no events are enabled. This function locks the deep sleep until any event has occurred.

Parameters
bufferThe buffer where received data will be stored
lengthThe buffer length in bytes
callbackThe event callback function
eventThe logical OR of TX events that should end operation
Returns
Zero if new transaction was started, -1 if transaction is already on-going
int writeable ( )
inherited

Determine if there is space available to write a character.

Returns
1 if there is space to write a character, 0 otherwise
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