Component: Delay (DSP)

Author	Matrix Ltd
Version	1.2
Category	DSP

Delay component

Allows an adjustable delay to be inserted into the DSP system

Detailed description

No detailed description exists yet for this component

Examples

Here is a simple example file for the Delay component.

Delay

The DelayADC component is used to set the amount of delay that the component provides 0-2550 samples in steps of 10 samples.

The Input ADC component is used to pass a variable value into the DSP chain to allow the delay to be simulated.

Here is a picture showing the response of the delay component using the data recorder window.

Downloadable macro reference

	DelayArray
Passes an entire buffer into the delay buffer and spits out a delayed version of the buffer at the other end
- VOID	Return

	Delay
Passes a single value from a buffer into the delay buffer and spits out a delayed value at the other end
- VOID	Return

	SetDelaySize
Specifies the number of values in the delay buffer to allow the length of the delay to be adjustable during runtime.
- UINT	Delay_Count
- VOID	Return

	PresetDelay
Presets the contents of the delay buffer with the specified value.
- UINT	Value
- VOID	Return

	IsPlaying
Checks to see if the last played track is still playing
[[File:]] -	Return

	GetReplyByte
Reads a single byte from the last reply. Each reply contains 4 bytes starting with the command code.
- BYTE	Index
Range: 0-3 / 0=Command, 1=Feedback, 2=Data MSB, 3=Data LSB
- BYTE	Return

	SkipTrack
Jump to the next or previous track
[[File:]] -	Direction
0=Next, 1=Previous
- VOID	Return

	PlayTrack
Plays track from the selected folder. MP3 & Advert folder track numbers should be 4 characters long e.g. 0001 any name.mp3, Other folder track numbers should be 3 characters long e.g. 001 Any name.mp3, Root the Track played in placement order.
- BYTE	Directory
0=Root, 1=Folder "01" - 99=Folder "99", 100=MP3, 101=Advert
- UINT	Track
Track number 1="001*.MP3" / "0001*.MP3", 100="100*.MP3" / "0100*.MP3"
- VOID	Return

	Initialise
Sets up the UART and does some housekeeping. Must be called before calling any of the other component macros.
- VOID	Return

	ReadAnalogAsInt
Reads one of the analogue components as an Integer value
- BYTE	Channel
0 = LDR, 1 = POT
[[File:]] -	Return

	RemapCharacter
Assigns a remap character allowing the PrintString function to automatically swap between pre-defined characters. The characters can be custom (in the range 0-9) or can point to an existing character in the LCD character map.
- BYTE	RemapIdx
Remap Index, Range: 0 to (Remap Characters - 1)
- BYTE	SearchCharacter
Character to look for a replace
- BYTE	ReplacementCharacter
New character value to use in place of the search character.
- VOID	Return

	Start
Startup routine required by the hardware device. Automatically clears the display after initialising.
- VOID	Return

	SetLEDState
Sets the state of a single LED
- BYTE	Port
0 = PortA, 1 = PortB
- BYTE	LED
0 = LED0, 7 = LED7
- BYTE	State
- VOID	Return

	Initialise
Must be called before any other CAN component macros to enable and initialise the CAN peripheral.
- VOID	Return

Property reference

	Properties
	Connect To
DSP component with output buffer to collect our data from.
	Buffer Size
Number of individual elements the buffer can store, default 1.
	Buffer Type
Sets the buffer data type.
	Initial Delay Count
The initial delay that will be used at startup
	Max Delay Count
The maximum number of values to delay the incoming signal by
	Initial Value
Value used to preset the delay buffer.
	Sample Rate (Hz)
Sample rate used to generate some useful calculations
	Max Delay (s)
Maximum possible delay in seconds at the specified sample rate
	Initial Delay (s)
Initial delay in seconds at the specified sample rate
	Connections
	Simulations