Component: SPI Slave (Comms: Interface)

Author	Matrix Ltd
Version	1.0
Category	Comms: Interface

SPI Slave component

Low level routines for controlling or interacting with an SPI interface. SPI or Serial Peripheral Interface is a bus used for board level communications between devices. A target microcontroller will usually have at least one hardware SPI peripheral built in.

Detailed description

No detailed description exists yet for this component

Examples

Simple Master program that sends an incrementing test value to the SPI bus as well as outputting the value onto LEDs.

SPI_Master

Simple Slave program that collects the value sent by the master and outputs the value onto LEDs. Allows the master slave comms to be compared to check that everything is working correctly.

SPI_Slave

Another simple example to buffer incoming SPI bytes sent by the master and output these to the LCD.

SPI_Slave2

Downloadable macro reference

	SendChar
General purpose SPI send byte macro
- BYTE	Char
Data byte to send
- VOID	Return

	GetChar
General purpose SPI get byte macro
- BYTE	Return

	UnInitialise
Deactivates the SPI peripheral leaving the I/O pins in a state where they can be used for general purpose I/O.
- VOID	Return

	Initialise
Activates the SPI peripheral and claims control over the I/O pins.
- VOID	Return

Property reference

	Properties
	Clock Phase
Clock Phase (data change edge) selection
	Clock Polarity
Clock Polarity setting, inactive (idle) state
	Sample Point
Data bit read sample point
	Connections
	Channel
SPI Channel selector
	MOSI
SPI Data Out Pin SDO - Also Known as Master Out Slave In (MOSI) when used in Master mode.
	MISO
SPI Data In Pin SDI - Also Known as Master In Slave Out (MISO) when used in Master mode.
	CLK
SPI Clock Pin CLK - The Clock signal is driven by the SPI master.
	Use Slave Select
	CS / SS
Chip Select / Slave Select Pin Master Mode: General purpose output pin used to select the remote SPI device. Slave Mode: Hardware chip select pin input used to select the SPI device.
	Simulations
	Label
Label used to identify the component on the panel.
	Scope Traces
Selects if the scope traces are automatically generated or not
	Console Data
Selects if the console data is automatically generated or not
	API