Byte-Sized buffers

An interrupt-safe byte-sized ring buffer interface. More...

Collaboration diagram for Byte-Sized buffers:

Data Structures
struct	qBSBuffer_t
	A BSBuffer(Byte-sized buffer) object. More...

Functions
size_t	qBSBuffer_Count (const qBSBuffer_t *const b)
	Query the number of elements in the Byte-sized buffer. More...
qBool_t	qBSBuffer_IsFull (const qBSBuffer_t *const b)
	Query the full status of the Byte-sized buffer. More...
qBool_t	qBSBuffer_Empty (const qBSBuffer_t *const b)
	Query the empty status of the Byte-sized buffer. More...
qUINT8_t	qBSBuffer_Peek (const qBSBuffer_t *const b)
	Looks for one byte from the head of the Byte-sized buffer without removing it. More...
qBool_t	qBSBuffer_Get (qBSBuffer_t *const b, qUINT8_t *dst)
	Gets one data-byte from the front of the Byte-sized buffer, and removes it. More...
qBool_t	qBSBuffer_Read (qBSBuffer_t *const b, void *dst, const size_t n)
	Gets n data from the Byte-sized buffer and removes them. More...
qBool_t	qBSBuffer_Put (qBSBuffer_t *const b, const qUINT8_t bData)
	Adds an element of data to the Byte-sized buffer. More...
qBool_t	qBSBuffer_Setup (qBSBuffer_t *const b, volatile qUINT8_t *pBuffer, const size_t length)
	Initialize the Byte-sized buffer. More...

Detailed Description

An interrupt-safe byte-sized ring buffer interface.

Function Documentation

qBSBuffer_Count()

size_t qBSBuffer_Count

(

const qBSBuffer_t *const

b

)

Query the number of elements in the Byte-sized buffer.

Parameters

[in]

b

a pointer to the qBSBuffer(Byte-sized Buffer) object

Returns

Number of elements in the BSBuffer(Byte-sized Buffer)

qBSBuffer_Empty()

qBool_t qBSBuffer_Empty

(

const qBSBuffer_t *const

b

)

Query the empty status of the Byte-sized buffer.

Parameters

[in]

b

a pointer to the qBSBuffer(Byte-sized Buffer) object

Returns

qTrue if the BSBuffer(Byte-sized Buffer) is empty, qFalse if it is not.

qBSBuffer_Get()

qBool_t qBSBuffer_Get	(	qBSBuffer_t *const	b,
		qUINT8_t *	dst
	)

Gets one data-byte from the front of the Byte-sized buffer, and removes it.

Parameters

[in]	b	a pointer to the qBSBuffer(Byte-sized Buffer) object
[out]	dst	the location where the data-byte will be written

Returns

qTrue on success, otherwise returns qFalse

qBSBuffer_IsFull()

qBool_t qBSBuffer_IsFull

(

const qBSBuffer_t *const

b

)

Query the full status of the Byte-sized buffer.

Parameters

[in]

b

a pointer to the qBSBuffer(Byte-sized Buffer) object

Returns

qTrue if the BSBuffer(Byte-sized Buffer) is full, qFalse if it is not.

qBSBuffer_Peek()

qUINT8_t qBSBuffer_Peek

(

const qBSBuffer_t *const

b

)

Looks for one byte from the head of the Byte-sized buffer without removing it.

Parameters

[in]

b

a pointer to the Byte-sized buffer object

Returns

byte of data, or zero if nothing in the list

qBSBuffer_Put()

qBool_t qBSBuffer_Put	(	qBSBuffer_t *const	b,
		const qUINT8_t	bData
	)

Adds an element of data to the Byte-sized buffer.

Parameters

[in]	b	a pointer to the qBSBuffer(Byte-sized Buffer) object
[in]	bData	The data to be added

Returns

qTrue on success, otherwise returns qFalse.

qBSBuffer_Read()

qBool_t qBSBuffer_Read	(	qBSBuffer_t *const	b,
		void *	dst,
		const size_t	n
	)

Gets n data from the Byte-sized buffer and removes them.

Parameters

[in]	b	a pointer to the qBSBuffer(Byte-sized Buffer) object
[out]	dst	the location where the data-byte will be written
[in]	n	The number of bytes to read

Returns

qTrue on success, otherwise returns qFalse

qBSBuffer_Setup()

qBool_t qBSBuffer_Setup	(	qBSBuffer_t *const	b,
		volatile qUINT8_t *	pBuffer,
		const size_t	length
	)

Initialize the Byte-sized buffer.

Parameters

[in]	b	a pointer to the qBSBuffer(Byte-sized Buffer) object
[in]	pBuffer	Block of memory or array of data
[in]	length	The size of the buffer(Must be a power of two)

Returns

qTrue on success, otherwise returns qFalse.