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rt-thread/bsp/efm32/graphics/dmd/ssd2119/dmd_ssd2119_16bit.c

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/**
* @section LICENSE
******************************************************************************
* <b>(C) Copyright 2009 Energy Micro AS, www.energymicro.com</b>
******************************************************************************
*
* This source code is the property of Energy Micro AS. The source/compiled
* code may not be used, redistributed or modified without a written consent
* from Energy Micro AS.
*
* This copyright notice may not be removed from the source code nor changed.
*
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
* obligation to support this Software. Energy Micro AS is providing the
* Software "AS IS", with no express or implied warranties of any kind,
* including, but not limited to, any implied warranties of merchantability
* or fitness for any particular purpose or warranties against infringement
* of any proprietary rights of a third party.
*
* Energy Micro AS will not be liable for any consequential, incidental, or
* special damages, or any other relief, or for any claim by any third party,
* arising from your use of this Software.
*
******************************************************************************
* @file dmd_ssd2119.c
* @brief Dot matrix display driver for LCD controller SSD2119
* @author Energy Micro AS
******************************************************************************
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include "dmd_ssd2119.h"
#include "dmd_ssd2119_registers.h"
#include "dmdif_ssd2119_ebi.h"
/** Dimensions of the display */
DMD_DisplayGeometry dimensions;
/* Local variables */
static uint32_t initialized = 0;
static uint16_t rcDriverOutputControl;
/* Local function prototypes */
static uint32_t colorTransform24To16bpp( uint8_t red, uint8_t green, uint8_t blue);
static void colorTransform16To24bpp(uint32_t color,
uint8_t *red, uint8_t *green, uint8_t *blue);
/**************************************************************************//**
* @brief
* Initializes the LCD display
*
* @param cmdRegAddr
* The address in memory where data to the command register in the display
* controller are written
* @param dataRegAddr
* The address in memory where data to the data register in the display
* controller are written
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_init(uint32_t cmdRegAddr, uint32_t dataRegAddr){
EMSTATUS stat;
uint16_t data;
/* Initialize register cache variables */
rcDriverOutputControl = 0;
/* Initialize DMD interface */
if ((stat = DMDIF_init(cmdRegAddr, dataRegAddr)) != DMD_OK)
{
return stat;
}
/* Initialization sequence, see UMSH-8252MD-T page 13 */
/* printf("R%x: 0x%x\n", DMD_SSD2119_VCOM_OTP_1, 0x0006); */
DMDIF_writeReg(DMD_SSD2119_VCOM_OTP_1, 0x0006);
/* Start oscillation */
data = DMD_SSD2119_OSCILLATION_START_OSCEN;
/* printf("R%x: 0x%x\n", DMD_SSD2119_OSCILLATION_START, data); */
DMDIF_writeReg(DMD_SSD2119_OSCILLATION_START, data);
/* Exit sleep mode */
data = 0;
/* printf("R%x: 0x%x\n", DMD_SSD2119_SLEEP_MODE_1, data); */
DMDIF_writeReg(DMD_SSD2119_SLEEP_MODE_1, data);
/* Display control */
data = DMD_SSD2119_DISPLAY_CONTROL_DTE;
data |= DMD_SSD2119_DISPLAY_CONTROL_GON;
data |= DMD_SSD2119_DISPLAY_CONTROL_D1;
data |= DMD_SSD2119_DISPLAY_CONTROL_D0;
/* printf("R%x: 0x%x\n", DMD_SSD2119_DISPLAY_CONTROL, data); */
DMDIF_writeReg(DMD_SSD2119_DISPLAY_CONTROL, data);
/* Entry mode */
data = DMD_SSD2119_ENTRY_MODE_DFM_65K << DMD_SSD2119_ENTRY_MODE_DFM_SHIFT;
data |= DMD_SSD2119_ENTRY_MODE_DENMODE;
data |= DMD_SSD2119_ENTRY_MODE_WMODE;
data |= DMD_SSD2119_ENTRY_MODE_NOSYNC;
data |= DMD_SSD2119_ENTRY_MODE_TY_TYPE_B << DMD_SSD2119_ENTRY_MODE_TY_SHIFT;
data |= DMD_SSD2119_ENTRY_MODE_ID1;
data |= DMD_SSD2119_ENTRY_MODE_ID0;
/* printf("R%x: 0x%x\n", DMD_SSD2119_ENTRY_MODE, data); */
DMDIF_writeReg(DMD_SSD2119_ENTRY_MODE, data);
/* LCD AC control */
data = DMD_SSD2119_LCD_AC_CONTROL_BC;
data |= DMD_SSD2119_LCD_AC_CONTROL_EOR;
/* printf("R%x: 0x%x\n", DMD_SSD2119_LCD_AC_CONTROL, data); */
DMDIF_writeReg(DMD_SSD2119_LCD_AC_CONTROL, data);
/* Power control */
data = 0x06 << DMD_SSD2119_POWER_CONTROL_1_DCT_SHIFT;
data |= 0x05 << DMD_SSD2119_POWER_CONTROL_1_BT_SHIFT;
data |= 0x03 << DMD_SSD2119_POWER_CONTROL_1_DC_SHIFT;
data |= 0x04 << DMD_SSD2119_POWER_CONTROL_1_AP_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_POWER_CONTROL_1, data); */
DMDIF_writeReg(DMD_SSD2119_POWER_CONTROL_1, data);
/* Driver output control */
data = DMD_SSD2119_DRIVER_OUTPUT_CONTROL_RL;
data |= DMD_SSD2119_DRIVER_OUTPUT_CONTROL_REV;
data |= DMD_SSD2119_DRIVER_OUTPUT_CONTROL_GD;
data |= DMD_SSD2119_DRIVER_OUTPUT_CONTROL_TB;
data |= (DMD_VERTICAL_SIZE - 1) << DMD_SSD2119_DRIVER_OUTPUT_CONTROL_MUX_SHIFT;
rcDriverOutputControl = data;
/* printf("R%x: 0x%x\n", DMD_SSD2119_DRIVER_OUTPUT_CONTROL, data); */
DMDIF_writeReg(DMD_SSD2119_DRIVER_OUTPUT_CONTROL, data);
/* Power Control */
data = 0x05 << DMD_SSD2119_POWER_CONTROL_2_VRC_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_POWER_CONTROL_2, data); */
DMDIF_writeReg(DMD_SSD2119_POWER_CONTROL_2, data);
data = 0x0D << DMD_SSD2119_POWER_CONTROL_3_VRH_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_POWER_CONTROL_3, data); */
DMDIF_writeReg(DMD_SSD2119_POWER_CONTROL_3, data);
data = DMD_SSD2119_POWER_CONTROL_4_VCOMG;
data |= 0x0D << DMD_SSD2119_POWER_CONTROL_4_VDV_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_POWER_CONTROL_4, data); */
DMDIF_writeReg(DMD_SSD2119_POWER_CONTROL_4, data);
data = DMD_SSD2119_POWER_CONTROL_5_NOTP;
data |= 0x3E << DMD_SSD2119_POWER_CONTROL_5_VCM_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_POWER_CONTROL_5, data); */
DMDIF_writeReg(DMD_SSD2119_POWER_CONTROL_5, data);
data = 0x0058;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GENERIC_INTERFACE_CONTROL, data); */
DMDIF_writeReg(DMD_SSD2119_GENERIC_INTERFACE_CONTROL, data);
/* Gamma settings */
data = 0x00 << DMD_SSD2119_GAMMA_1_PKP1_SHIFT;
data |= 0x00 << DMD_SSD2119_GAMMA_1_PKP0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_1, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_1, data);
data = 0x01 << DMD_SSD2119_GAMMA_2_PKP3_SHIFT;
data |= 0x01 << DMD_SSD2119_GAMMA_2_PKP2_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_2, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_2, data);
data = 0x01 << DMD_SSD2119_GAMMA_3_PKP5_SHIFT;
data |= 0x00 << DMD_SSD2119_GAMMA_3_PKP4_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_3, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_3, data);
data = 0x03 << DMD_SSD2119_GAMMA_4_PRP1_SHIFT;
data |= 0x05 << DMD_SSD2119_GAMMA_4_PRP0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_4, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_4, data);
data = 0x07 << DMD_SSD2119_GAMMA_5_PKN1_SHIFT;
data |= 0x07 << DMD_SSD2119_GAMMA_5_PKN0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_5, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_5, data);
data = 0x03 << DMD_SSD2119_GAMMA_6_PKN3_SHIFT;
data |= 0x05 << DMD_SSD2119_GAMMA_6_PKN2_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_6, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_6, data);
data = 0x07 << DMD_SSD2119_GAMMA_7_PKN5_SHIFT;
data |= 0x07 << DMD_SSD2119_GAMMA_7_PKN4_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_7, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_7, data);
data = 0x02 << DMD_SSD2119_GAMMA_8_PRN1_SHIFT;
data |= 0x01 << DMD_SSD2119_GAMMA_8_PRN0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_8, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_8, data);
data = 0x12 << DMD_SSD2119_GAMMA_9_VRP1_SHIFT;
data |= 0x00 << DMD_SSD2119_GAMMA_9_VRP0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_9, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_9, data);
data = 0x09 << DMD_SSD2119_GAMMA_10_VRN1_SHIFT;
data |= 0x00 << DMD_SSD2119_GAMMA_10_VRN0_SHIFT;
/* printf("R%x: 0x%x\n", DMD_SSD2119_GAMMA_10, data); */
DMDIF_writeReg(DMD_SSD2119_GAMMA_10, data);
/* Set up dimensions of the display */
dimensions.xSize = DMD_HORIZONTAL_SIZE;
dimensions.ySize = DMD_VERTICAL_SIZE;
/* At initialization, the clip is the entire display */
dimensions.xClipStart = 0;
dimensions.yClipStart = 0;
dimensions.clipWidth = dimensions.xSize;
dimensions.clipHeight = dimensions.ySize;
initialized = 1;
/* Fill the entire display with black color */
DMD_writeColor(0, 0, 0x00, 0x00, 0x00, dimensions.xSize * dimensions.ySize);
return DMD_OK;
}
/**************************************************************************//**
* \brief
* Get the dimensions of the display and of the current clipping area
*
* \return
* DMD_Dimensions structure containing the size of the display and the
* clipping area
******************************************************************************/
EMSTATUS DMD_getDisplayGeometry(DMD_DisplayGeometry **geometry)
{
if (!initialized)
{
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
*geometry = &dimensions;
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Sets the clipping area. All coordinates given to writeData/writeColor/readData
* are relative to this clipping area.
*
* @param xStart
* X coordinate of the upper left corner of the clipping area
* @param yStart
* Y coordinate of the upper left corner of the clipping area
* @param width
* Width of the clipping area
* @param height
* Height of the clipping area
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_setClippingArea(uint16_t xStart, uint16_t yStart,
uint16_t width, uint16_t height)
{
uint16_t verticalPos;
uint16_t xEnd;
uint16_t yEnd;
if (!initialized)
{
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Check parameters */
if (xStart + width > dimensions.xSize ||
yStart + height > dimensions.ySize)
{
return DMD_ERROR_PIXEL_OUT_OF_BOUNDS;
}
if (width == 0 || height == 0)
{
return DMD_ERROR_EMPTY_CLIPPING_AREA;
}
xEnd = xStart + width - 1;
yEnd = yStart + height - 1;
/* Set the clipping region in the display */
DMDIF_writeReg(DMD_SSD2119_HORIZONTAL_RAM_ADDRESS_START_POS, xStart);
DMDIF_writeReg(DMD_SSD2119_HORIZONTAL_RAM_ADDRESS_END_POS, xEnd);
verticalPos = yEnd << DMD_SSD2119_VERTICAL_RAM_ADDRESS_POS_END_SHIFT;
verticalPos |= yStart << DMD_SSD2119_VERTICAL_RAM_ADDRESS_POS_START_SHIFT;
DMDIF_writeReg(DMD_SSD2119_VERTICAL_RAM_ADDRESS_POS, verticalPos);
/* Update the dimensions structure */
dimensions.xClipStart = xStart;
dimensions.yClipStart = yStart;
dimensions.clipWidth = width;
dimensions.clipHeight = height;
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Set the x and y coordinate of the next pixel to draw
*
* @param x
* X address of the pixel, relative to the current clipping area
* @param y
* Y address of the pixel, relative to the current clipping area
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS setPixelAddress(uint16_t x, uint16_t y)
{
/* Check parameters */
if (x > dimensions.clipWidth || y > dimensions.clipHeight)
{
return DMD_ERROR_PIXEL_OUT_OF_BOUNDS;
}
/* Set pixel position */
DMDIF_writeReg(DMD_SSD2119_SET_X_ADDRESS_COUNTER,
x + dimensions.xClipStart);
DMDIF_writeReg(DMD_SSD2119_SET_Y_ADDRESS_COUNTER,
y + dimensions.yClipStart);
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Draws pixels to the display
*
* @param x
* X coordinate of the first pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the first pixel to be written, relative to the clipping area
* @param data
* Array containing the pixel data. Each 8-bit element in the array are one color
* component of the pixel, so that 3 bytes represent one pixel. The pixels are
* ordered by increasing x coordinate, after the last pixel of a row, the next
* pixel will be the first pixel on the next row.
* @param numPixels
* Number of pixels to be written
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_writeData(uint16_t x, uint16_t y, const uint8_t data[],
uint32_t numPixels)
{
uint32_t statusCode;
uint32_t clipRemaining;
uint32_t color;
uint32_t i;
if (!initialized)
{
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Set the address of the first pixel */
statusCode = setPixelAddress(x, y);
if (statusCode != DMD_OK)
{
return statusCode;
}
/* Number of pixels from the first pixel (given by x and y) to the end
* of the clipping area */
clipRemaining = (dimensions.clipHeight - y - 1) * dimensions.clipWidth +
dimensions.clipWidth - x;
/* Check that the length of data isn't longer than the number of pixels
* in the rest of the clipping area */
if (numPixels > clipRemaining)
{
return DMD_ERROR_TOO_MUCH_DATA;
}
/* Write data */
DMDIF_prepareDataAccess( );
for (i = 0; i < numPixels; i++)
{
color = colorTransform24To16bpp(data[3 * i], data[3 * i + 1],
data[3 * i + 2]);
DMDIF_writeData(color);
}
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Draws pixels to the display at location x,y, from a source data array in
* GIMP RLE compressed C-format, mixing with another RGB color to create a
* "blended" look or for fading images in and out
* @param x
* X coordinate of the first pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the first pixel to be written, relative to the clipping area
* @param data
* Array containing the pixel data in GIMP RLE compressed format
* @param numPixels
* Number of pixels to be written
* @param red
* Red component of color to mix with orignal
* @param green
* Red component of color to mix with orignal
* @param blue
* Red component of color to mix with orignal
* @param weight
* Ratio to which red/green/blue component and original color should be combined
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_writeDataRLEFade(uint16_t x, uint16_t y, uint16_t xlen, uint16_t ylen,
const uint8_t *data,
int red, int green, int blue, int weight)
{
uint32_t color = 0;
int xpos, ypos;
const uint8_t *ptr;
int r,g,b;
uint8_t readRGB = 0;
uint8_t copyColor = 0;
ptr = data;
for (ypos = y; ypos < (ylen+y); ypos++){
setPixelAddress(x, ypos);
DMDIF_prepareDataAccess( );
for (xpos = x; xpos < (xlen+x); xpos++){
if ( readRGB ) {
readRGB--;
r = *ptr++;
g = *ptr++;
b = *ptr++;
r = ((r * weight/100) + (red * (100-weight)/100));
g = ((g * weight/100) + (green * (100-weight)/100));
b = ((b * weight/100) + (blue * (100-weight)/100));
color = colorTransform24To16bpp(r,g,b);
DMDIF_writeData(color);
continue;
}
if ( copyColor ) {
copyColor--;
DMDIF_writeData( color );
continue;
}
if ( *ptr & 0x80 ) {
copyColor = (*ptr - 0x80);
ptr++;
r = *ptr++;
g = *ptr++;
b = *ptr++;
r = ((r * weight/100) + (red * (100-weight)/100));
g = ((g * weight/100) + (green * (100-weight)/100));
b = ((b * weight/100) + (blue * (100-weight)/100));
copyColor--;
}
else {
readRGB = *ptr;
ptr++;
r = *ptr++;
g = *ptr++;
b = *ptr++;
r = ((r * weight/100) + (red * (100-weight)/100));
g = ((g * weight/100) + (green * (100-weight)/100));
b = ((b * weight/100) + (blue * (100-weight)/100));
readRGB--;
}
color = colorTransform24To16bpp(r,g,b);
DMDIF_writeData( color );
}
}
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Draws pixels to the display at location x,y, from a source data array in
* GIMP RLE compressed C-format
* @param x
* X coordinate of the first pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the first pixel to be written, relative to the clipping area
* @param data
* Array containing the pixel data in GIMP RLE compressed format
* @param numPixels
* Number of pixels to be written
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_writeDataRLE(uint16_t x, uint16_t y, uint16_t xlen, uint16_t ylen,
const uint8_t *data)
{
uint32_t color = 0;
int xpos, ypos;
const uint8_t *ptr;
uint8_t r,g,b;
uint8_t readRGB = 0;
uint8_t copyColor = 0;
ptr = data;
for (ypos = y; ypos < (ylen+y); ypos++){
setPixelAddress(x, ypos);
DMDIF_prepareDataAccess( );
for (xpos = x; xpos < (xlen+x); xpos++){
if ( readRGB ) {
readRGB--;
r = *ptr++;
g = *ptr++;
b = *ptr++;
color = colorTransform24To16bpp(r,g,b);
DMDIF_writeData(color);
continue;
}
if ( copyColor ) {
copyColor--;
DMDIF_writeData( color );
continue;
}
if ( *ptr & 0x80 ) {
copyColor = (*ptr - 0x80);
ptr++;
r = *ptr++;
g = *ptr++;
b = *ptr++;
copyColor--;
} else {
readRGB = *ptr;
ptr++;
r = *ptr++;
g = *ptr++;
b = *ptr++;
readRGB--;
}
color = colorTransform24To16bpp(r,g,b);
DMDIF_writeData( color );
}
}
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Reads data from display memory
* WORKING NOW, fixed by onelife
*
* @param x
* X coordinate of the first pixel to be read, relative to the clipping area
* @param y
* Y coordinate of the first pixel to be read, relative to the clipping area
* @param data
* Pointer to where the pixel data will be stored
* @param numPixels
* Number of pixels to be read
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_readData(uint16_t x, uint16_t y,
uint8_t data[], uint32_t numPixels)
{
uint32_t statusCode;
uint32_t clipRemaining;
uint32_t i;
uint32_t color;
uint8_t red, green, blue;
if (!initialized)
{
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Set the address of the first pixel */
statusCode = setPixelAddress(x, y);
if (statusCode != DMD_OK)
{
return statusCode;
}
/* Number of pixels from the first pixel (given by x and y) to the end
* of the clipping area */
clipRemaining = (dimensions.clipHeight - y - 1) * dimensions.clipWidth +
dimensions.clipWidth - x;
/* Check that the length of data isn't longer than the number of pixels
* in the rest of the clipping area */
if (numPixels > clipRemaining)
{
return DMD_ERROR_TOO_MUCH_DATA;
}
/* Read data */
DMDIF_prepareDataAccess();
/* Dummy read */
color = DMDIF_readData();
for (i = 0; i < numPixels; i++)
{
/* Read the color value */
color = DMDIF_readData();
/* Transform into 24bpp */
colorTransform16To24bpp(color, &red, &green, &blue);
data[3 * i] = red;
data[3 * i + 1] = green;
data[3 * i + 2] = blue;
}
return DMD_OK;
}
/**************************************************************************//**
* \brief
* Draws a number of pixels of the same color to the display
*
* @param x
* X coordinate of the first pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the first pixel to be written, relative to the clipping area
* @param red
* Red component of the color
* @param green
* Green component of the color
* @param blue
* Blue component of the color
* @param numPixels
* Number of pixels to be written
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_writeColor(uint16_t x, uint16_t y, uint8_t red,
uint8_t green, uint8_t blue, uint32_t numPixels)
{
uint32_t clipRemaining;
uint32_t statusCode;
uint32_t color;
if (!initialized){
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Set the address of the first pixel */
statusCode = setPixelAddress(x, y);
if (statusCode != DMD_OK){
return statusCode;
}
/* Number of pixels from the first pixel (given by x and y) to the end
* of the clipping area */
clipRemaining = (dimensions.clipHeight - y - 1) * dimensions.clipWidth +
dimensions.clipWidth - x;
/* Check that the length of data isn't longer than the number of pixels
* in the rest of the clipping area */
if (numPixels > clipRemaining){
return DMD_ERROR_TOO_MUCH_DATA;
}
/* Write data */
DMDIF_prepareDataAccess( );
color = colorTransform24To16bpp(red, green, blue);
DMDIF_writeDataRepeated(color, numPixels);
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Draws a number of pixels of the same color to the display
* This function is added by onelife
*
* @param x
* X coordinate of the pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the pixel to be written, relative to the clipping area
* @param color
* RGB565 format
* @param numPixels
* Number of pixels to be written
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_writePixel(uint16_t x, uint16_t y, uint16_t color,
uint32_t numPixels)
{
uint32_t clipRemaining;
uint32_t statusCode;
if (!initialized){
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Set the address of the first pixel */
statusCode = setPixelAddress(x, y);
if (statusCode != DMD_OK){
return statusCode;
}
/* Number of pixels from the first pixel (given by x and y) to the end
* of the clipping area */
clipRemaining = (dimensions.clipHeight - y - 1) * dimensions.clipWidth +
dimensions.clipWidth - x;
/* Check that the length of data isn't longer than the number of pixels
* in the rest of the clipping area */
if (numPixels > clipRemaining){
return DMD_ERROR_TOO_MUCH_DATA;
}
/* Write data */
DMDIF_prepareDataAccess( );
DMDIF_writeDataRepeated((uint32_t)color, numPixels);
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Read the color of a specified pixel
* This function is added by onelife
*
* @param x
* X coordinate of the pixel to be written, relative to the clipping area
* @param y
* Y coordinate of the pixel to be written, relative to the clipping area
* @param color
* RGB565 format
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_readPixel(uint16_t x, uint16_t y, uint16_t *color)
{
uint32_t statusCode;
if (!initialized){
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Set the address of the first pixel */
statusCode = setPixelAddress(x, y);
if (statusCode != DMD_OK){
return statusCode;
}
/* Read color */
DMDIF_prepareDataAccess( );
*color = DMDIF_readData() & 0x0000FFFF;
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Turns off the display and puts it into sleep mode
* Does not turn off backlight
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_sleep(void){
uint16_t data;
if (!initialized){
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Put into sleep mode */
data = DMD_SSD2119_SLEEP_MODE_1_SLP;
DMDIF_writeReg(DMD_SSD2119_SLEEP_MODE_1, data);
/* Turn off display */
data = 0;
DMDIF_writeReg(DMD_SSD2119_DISPLAY_CONTROL, 0x0000);
/* Delay 1.5 frame */
/*DMDIF_delay((1000 / DMD_FRAME_FREQUENCY) * 3 / 2);*/
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Wakes up the display from sleep mode
*
* @return
* DMD_OK on success, otherwise error code
******************************************************************************/
EMSTATUS DMD_wakeUp(void){
uint16_t data;
if (!initialized){
return DMD_ERROR_DRIVER_NOT_INITIALIZED;
}
/* Get out of sleep mode */
data = 0;
DMDIF_writeReg(DMD_SSD2119_SLEEP_MODE_1, data);
/* Turn on display */
data = DMD_SSD2119_DISPLAY_CONTROL_DTE;
data |= DMD_SSD2119_DISPLAY_CONTROL_GON;
data |= DMD_SSD2119_DISPLAY_CONTROL_D1;
data |= DMD_SSD2119_DISPLAY_CONTROL_D0;
DMDIF_writeReg(DMD_SSD2119_DISPLAY_CONTROL, 0x0033);
/* Delay 10 frames */
/*DMDIF_delay((1000 / DMD_FRAME_FREQUENCY) * 10);*/
return DMD_OK;
}
/**************************************************************************//**
* @brief
* Transforms a 24bpp pixel data into an 16bpp pixel
*
* @param red
* 8-bit red component of the pixel
* @param green
* 8-bit green component of the pixel
* @param blue
* 8-bit blue component of the pixel
* @return
* 16bpp value of pixel
******************************************************************************/
static uint32_t colorTransform24To16bpp(uint8_t red, uint8_t green, uint8_t blue){
/* Transform each color into 6 bits by dropping the 2 LSB */
red = (red >> 3) & 0x1F;
green = (green >> 2) & 0x3F;
blue = (blue >> 3) & 0x1F;
/* Put it together to one 16bpp color number */
return (red << 11) | (green << 5) | blue;
}
/**************************************************************************//**
* @brief
* Transforms an 18 bpp pixel into a 24bpp pixel
*
* @param color
* 16bpp color pixel
* @param red
* return value for red component of 24bpp pixel
* @param green
* return value for green component of 24bpp pixel
* @param blue
* return value for blue component of 24bpp pixel
******************************************************************************/
static void colorTransform16To24bpp(uint32_t color, uint8_t *red,
uint8_t *green, uint8_t *blue){
/* Get the individual colors out of the 16bpp number */
uint8_t redValue = (color & 0x0000F800) >> 11;
uint8_t greenValue = (color & 0x000007E0) >> 5;
uint8_t blueValue = (color & 0x0000001F);
/* Convert each color to 8-bit */
redValue <<= 3;
greenValue <<= 2;
blueValue <<= 3;
*red = redValue;
*green = greenValue;
*blue = blueValue;
return;
}
/**************************************************************************//**
* @brief
* Set horizontal and vertical flip mode of display controller
*
* @param hor
* Set to flip display horizontally
*
* @param ver
* Set to flip display vertically
*
* @return
* Returns DMD_OK is successful, error otherwise.
******************************************************************************/
EMSTATUS DMD_flipDisplay(int horizontal, int vertical){
uint16_t reg;
reg = rcDriverOutputControl;
if (horizontal) reg &= ~DMD_SSD2119_DRIVER_OUTPUT_CONTROL_RL;
else reg |= DMD_SSD2119_DRIVER_OUTPUT_CONTROL_RL;
if (vertical) reg &= ~DMD_SSD2119_DRIVER_OUTPUT_CONTROL_TB;
else reg |= DMD_SSD2119_DRIVER_OUTPUT_CONTROL_TB;
rcDriverOutputControl = reg;
DMDIF_writeReg(DMD_SSD2119_DRIVER_OUTPUT_CONTROL, rcDriverOutputControl);
return DMD_OK;
}
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