UsiSpi Class Reference

Class implements AVR USI spi support via hardware module. More...

#include <spi_usi.h>

Public Member Functions
	UsiSpi (int8_t csPin, int8_t dcPin)
	Creates AVR USI spi instance. More...
void	begin ()
	Initializes spi interface.
void	end ()
	Closes spi interface.
void	start ()
	Starts communication with SSD1306 display.
void	stop ()
	Ends communication with SSD1306 display.
void	send (uint8_t data)
	Sends byte to SSD1306 device. More...
void	sendBuffer (const uint8_t *buffer, uint16_t size)
	Sends bytes to SSD1306 device. More...

Detailed Description

Class implements AVR USI spi support via hardware module.

Definition at line 41 of file spi_usi.h.

Constructor & Destructor Documentation

UsiSpi()

UsiSpi::UsiSpi ( int8_t  csPin, int8_t  dcPin  )

explicit

Creates AVR USI spi instance.

This interface can be used from command line avrgcc toolchain. It uses standard USI CLK, USI DO, USI DI pins to send data to LCD.

Parameters

csPin	pin to enable chip select signal, or -1 if cs pin is not required.
dcPin	pin to control data/command mode.

Member Function Documentation

send()

void UsiSpi::send

(

uint8_t

data

)

Sends byte to SSD1306 device.

Parameters

data	- byte to send

sendBuffer()

void UsiSpi::sendBuffer	(	const uint8_t *	buffer,
		uint16_t	size
	)

Sends bytes to SSD1306 device.

Sends bytes to SSD1306 device. This functions gives ~ 30% performance increase than ssd1306_intf.send.

Parameters

buffer	- bytes to send
size	- number of bytes to send

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The documentation for this class was generated from the following file:

• src/lcd_hal/avr/spi_usi.h