il3820.h File Reference

#include "simpletools.h"
#include "simplegfx.h"

Go to the source code of this file.

Drawing, Text, and Bitmap Functions
	simplegfx Library
	This display driver calls and uses functions from the simplegfx library.
Functions
screen_t *	il3820_init (char sid, char sclk, char cs, char rs, char rst, char busy, int width, int height)
	Initializes the ePaper screen by setting up it's SPI and control pins. More...
void	il3820_sleepDisplay (screen_t *dev)
	Turn the display off without changing it's contents (make it sleep). More...
void	il3820_wakeDisplay (screen_t *dev)
	Turn the display on from a sleep mode. More...
void	il3820_spiWrite (int mask_cs, int mask_sdi, int mask_clk, int mask_dc, char c, char dc)
	Low-level driver for sending a byte to the ePaper screen. More...
void	il3820_spiWriteBytes (int mask_cs, int mask_sdi, int mask_clk, const unsigned char *data, int numBytes)
	Low-level driver for sending multiple bytes to the ePaper screen. More...
char	il3820_writeLock ()
	Returns the status of the SPI communication lockout so multiple cogs don't try to write to it at the same time. More...
void	il3820_writeLockSet (char devId)
	Sets the SPI communication lockout. More...
void	il3820_writeLockClear (char devId)
	Clears the SPI communication lockout. More...
void	il3820_drawPixel (screen_t *dev, int x, int y, int color)
	Draws a single pixel on the screen in the specified color. No checking. More...
void	il3820_drawFastHLine (screen_t *dev, int x0, int x1, int y, int color)
	Draws a horizontal line on the screen in the specified color. No bounds checking (used by other functions that do the bounds checking first) More...
void	il3820_drawFastVLine (screen_t *dev, int y0, int y1, int x, int color)
	Draws a vertical line on the screen in the specified color. No bounds checking (used by other functions that do the bounds checking first) More...
void	il3820_clearDisplay (screen_t *dev)
	Clears the screen by setting the full area of the display to white. More...
void	il3820_updateDisplay (screen_t *dev)
	Update the display with whatever is in the frame memory. You need to have updated the frame memory with _image first. More...
void	il3820_resetDisplay (screen_t *dev)
	Resets the display. More...
Macros
#define	IL3820_H
#define	BLACK   0
#define	WHITE   1
#define	INVERSE   2
#define	IL3820_DRIVER_OUTPUT   0x01
#define	IL3820_BOOSTER_SOFT_START   0x0C
#define	IL3820_GATE_SCAN_START   0x0F
#define	IL3820_DEEP_SLEEP_MODE   0x10
#define	IL3820_DATA_ENTRY_MODE   0x11
#define	IL3820_SW_RESET   0x12
#define	IL3820_TEMPERATURE_SENSOR   0x1A
#define	IL3820_MASTER_ACTIVATION   0x20
#define	IL3820_DISPLAY_UPDATE_1   0x21
#define	IL3820_DISPLAY_UPDATE_2   0x22
#define	IL3820_WRITE_RAM   0x24
#define	IL3820_WRITE_VCOM_REGISTER   0x2C
#define	IL3820_WRITE_LUT_REGISTER   0x32
#define	IL3820_SET_DUMMY_LINE_PERIOD   0x3A
#define	IL3820_SET_GATE_TIME   0x3B
#define	IL3820_BORDER_WAVEFORM_CONTROL   0x3C
#define	IL3820_SET_RAM_X_ADDRESS_POSITION   0x44
#define	IL3820_SET_RAM_Y_ADDRESS_POSITION   0x45
#define	IL3820_SET_RAM_X_ADDRESS_COUNTER   0x4E
#define	IL3820_SET_RAM_Y_ADDRESS_COUNTER   0x4F
#define	IL3820_TERMINATE_FRAME_READ_WRITE   0xFF

Function Documentation

il3820_clearDisplay()

void il3820_clearDisplay

(

screen_t *

dev

)

Clears the screen by setting the full area of the display to white.

Parameters

dev	Pointer to the display's device structure returned by the initialization function.

il3820_drawFastHLine()

void il3820_drawFastHLine	(	screen_t *	dev,
		int	x0,
		int	x1,
		int	y,
		int	color
	)

Draws a horizontal line on the screen in the specified color. No bounds checking (used by other functions that do the bounds checking first)

Parameters

dev	Pointer to the display's device structure returned by the initialization function.
x0	Starting horizontal coordinate of the line, counted from the left side of the screen.
x1	Ending horizontal coordinate of the line.
y	Vertical coordinate of the line.
color	Color of the pixel.

il3820_drawFastVLine()

void il3820_drawFastVLine	(	screen_t *	dev,
		int	y0,
		int	y1,
		int	x,
		int	color
	)

Draws a vertical line on the screen in the specified color. No bounds checking (used by other functions that do the bounds checking first)

Parameters

dev	Pointer to the display's device structure returned by the initialization function.
y0	Starting vertical coordinate of the line, counted down from the top of the screen.
y1	Ending vertical coordinate of the line.
x	Horizontal coordinate of the line.
color	Color of the pixel.

il3820_drawPixel()

void il3820_drawPixel	(	screen_t *	dev,
		int	x,
		int	y,
		int	color
	)

Draws a single pixel on the screen in the specified color. No checking.

Parameters

dev	Pointer to the display's device structure returned by the initialization function.
x	Horizontal coordinate of the pixel, counted from the left side of the screen.
y	Vertical coordinate of the pixel, counted down from the top of the screen.
color	Color of the pixel.

il3820_init()

screen_t* il3820_init	(	char	sid,
		char	sclk,
		char	cs,
		char	rs,
		char	rst,
		char	busy,
		int	width,
		int	height
	)

Initializes the ePaper screen by setting up it's SPI and control pins.

Parameters

sid	which pin is connected to the Serial Data In pin, marked "DIN".
sclk	which pin is connected to the Serial Clock pin, marked "CLK".
cs	which pin is connected to the Chip Select pin, marked "CS".
rs	which pin is connected to the Read Status pin, marked "D/C".
rst	which pin is connected to the Reset pin, marked "RST".
busy	which pin is connected to the Busy pin, marked "BUSY".
width	Width of the display in pixels.
height	Height of the displayin pixels.

il3820_resetDisplay()

void il3820_resetDisplay

(

screen_t *

dev

)

Resets the display.

Parameters

dev	Pointer to the display's device structure returned by the initialization function.

il3820_sleepDisplay()

void il3820_sleepDisplay

(

screen_t *

dev

)

Turn the display off without changing it's contents (make it sleep).

Parameters

dev	Pointer to the display's device structure returned by the initialization function.

il3820_spiWrite()

void il3820_spiWrite	(	int	mask_cs,
		int	mask_sdi,
		int	mask_clk,
		int	mask_dc,
		char	c,
		char	dc
	)

Low-level driver for sending a byte to the ePaper screen.

Parameters

mask_cs	Pin mask for the display's chip select pin.
mask_sdi	Pin mask for the display's serial data in pin.
mask_clk	Pin mask for the display's clock pin.
mask_dc	Pin mask for the display's data/command pin.
c	Byte to be transferred.
dc	Toggle whether the byte is a command or data.

il3820_spiWriteBytes()

void il3820_spiWriteBytes	(	int	mask_cs,
		int	mask_sdi,
		int	mask_clk,
		const unsigned char *	data,
		int	numBytes
	)

Low-level driver for sending multiple bytes to the ePaper screen.

Parameters

mask_cs	Pin mask for the display's chip select pin.
mask_sdi	Pin mask for the display's serial data in pin.
mask_clk	Pin mask for the display's clock pin.
mask_dc	Pin mask for the display's data/command pin.
data	Pointer to buffer of bytes to send
numBytes	The number of bytes in the buffer to send.

il3820_updateDisplay()

void il3820_updateDisplay

(

screen_t *

dev

)

Update the display with whatever is in the frame memory. You need to have updated the frame memory with _image first.

Parameters

dev	Pointer to the display's device structure returned by the initialization function.

il3820_wakeDisplay()

void il3820_wakeDisplay

(

screen_t *

dev

)

Turn the display on from a sleep mode.

Parameters

dev	Pointer to the display's device structure returned by the initialization function.

il3820_writeLock()

char il3820_writeLock

(

)

Returns the status of the SPI communication lockout so multiple cogs don't try to write to it at the same time.

il3820_writeLockClear()

void il3820_writeLockClear

(

char

devId

)

Clears the SPI communication lockout.

Parameters

devId

The ID of the device (usually the chip select pin).

il3820_writeLockSet()

void il3820_writeLockSet

(

char

devId

)

Sets the SPI communication lockout.

Parameters

devId

The ID of the device (usually the chip select pin).