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:

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	enable_input (bool enable=true)
	Enable serial input. More...

void	enable_output (bool enable=true)
	Enable serial output. 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 62 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

tx	Transmit pin
rx	Receive pin
baud	The 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

func	A pointer to a void function, or 0 to set as none
type	Which 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

obj	pointer to the object to call the member function on
method	pointer to the member function to be called
type	Which 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 121 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

obj	pointer to the object to call the member function on
method	pointer to the member function to be called
type	Which 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 139 of file SerialBase.h.

void baud ( int baudrate )

inherited

Set the baud rate of the serial port.

Parameters

baudrate The 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 enable_input ( bool enable = true )

inherited

Enable serial input.

If both serial input and serial output are disabled, the peripheral is freed. If either serial input or serial output is re-enabled, the peripheral is reinitialized.

On re-initialization rx interrupts will be enabled if a rx handler is attached. The rx handler is called once during re-initialization.

void enable_output ( bool enable = true )

inherited

Enable serial output.

If both serial input and serial output are disabled, the peripheral is freed. If either serial input or serial output is re-enabled, the peripheral is reinitialized.

On re-initialization tx interrupts will be enabled if a tx handler is attached. The tx handler is called once during re-initialization.

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

inherited

Set the transmission format used by the serial port.

Parameters

bits	The number of bits in a word (5-8; default = 8)
parity	The parity used (SerialBase::None, SerialBase::Odd, SerialBase::Even, SerialBase::Forced1, SerialBase::Forced0; default = SerialBase::None)
stop_bits	The 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

c	The 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

str	The 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

buffer	The buffer where received data will be stored
length	The buffer length in bytes
callback	The event callback function
event	The logical OR of RX events that should end operation
char_match	The 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

buffer	The buffer where received data will be stored
length	The buffer length in bytes
callback	The event callback function
event	The logical OR of RX events that should end operation
char_match	The 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

usage The 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

usage The 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

type	the flow control type (Disabled, RTS, CTS, RTSCTS)
flow1	the first flow control pin (RTS for RTS or RTSCTS, CTS for CTS)
flow2	the 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

buffer	The buffer where received data will be stored
length	The buffer length in bytes
callback	The event callback function
event	The 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

buffer	The buffer where received data will be stored
length	The buffer length in bytes
callback	The event callback function
event	The 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

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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