BSFIFO – Binary Structure - Queueing serialize and deserialize

Block SymbolLicensing group: ADVANCED

Function Description
This block sequentially adds or removes data to/from the buffer (passed to the uBuff input). The elementary unit in a buffer is a column. All matrices (ie matrices or vectors fed to the inputs uBuff, uMatIn, uMatOut) must have the same column size in bytes. Data is organized as either a queue (if REV=off) or a stack (if REV=on). The behavior of the block depends on the inputs in this way:

If PUSH=on, the content of the uMatIn matrix (all defined columns) is inserted into the buffer.
If POP=on, the number of columns determined by the col parameter is removed from the buffer and this data is inserted into the uMatOut matrix (it must be of sufficient size).
If R1=on, the data is reloaded (mainly the number of valid columns) into the block buffer. Own data is transmitted by reference and is therefore shared. This signal has priority and blocks PUSH, POP signals.

Error states (e.g. mismatched matrix dimensions, insufficient space in some matrices, lack of data in the buffer) are indicated on the iE output and by a message in the SystemLog.

Inputs

uBuff	Binary Structure (array of bytes) input	Reference
uMatIn	Input reference to a matrix or vector (for PUSH)	Reference
uMatOut	Input reference to a matrix or vector (for POP)	Reference
PUSH	Enable push data	Bool
POP	Enable pop data	Bool
R1	Buffer reset (reload headers from uBuff)	Bool

Parameters

OW	Overwrite oldest items in buffer	Bool
REV	Pop last pushed item first	Bool
col	Number of output (pop) columns $⊙$ 1	Long (I32)

Outputs

yBuff	Copy of the uBuff input, for easy chaining	Reference
yMatIn	Output reference to a matrix or vector uMatIn	Reference
yMatOut	Output reference to a matrix or vector uMatOut	Reference
iused	Used bytes in queue	Long (I32)
ifree	Free bytes in queue	Long (I32)
iE	Error code	Error

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