/* ����������������������������������������������������������������������� */
void LcdLowLevelInit()
{
u_char i;
NutDelay(140); // wait for more than 140 ms after Vdd rises to 2.7 V
for (i=0; i<3; ++i)
{
LcdWriteNibble(WRITE_COMMAND, 0x33); // function set: 8-bit mode; necessary to guarantee that
NutDelay(4); // SIR starts up always in 5x10 dot mode
}
LcdWriteNibble(WRITE_COMMAND, 0x22); // function set: 4-bit mode; necessary because KS0070 doesn't
NutDelay(1); // accept combined 4-bit mode & 5x10 dot mode programming
//LcdWriteByte(WRITE_COMMAND, 0x24); // function set: 4-bit mode, 5x10 dot mode, 1-line
LcdWriteByte(WRITE_COMMAND, 0x28); // function set: 4-bit mode, 5x7 dot mode, 2-lines
NutDelay(5);
LcdWriteByte(WRITE_COMMAND, 0x0C); // display ON/OFF: display ON, cursor OFF, blink OFF
NutDelay(5);
LcdWriteByte(WRITE_COMMAND, 0x01); // display clear
NutDelay(5);
LcdWriteByte(WRITE_COMMAND, 0x06); // entry mode set: increment mode, entire shift OFF
LcdWriteByte(WRITE_COMMAND, 0x80); // DD-RAM address counter (cursor pos) to '0'
}
void lcd_show_cursor(bool value)
{
if(value)
LcdWriteByte(WRITE_COMMAND, 0x0F); // 0E: underline cursor. Or: 0F for block cursor
else
LcdWriteByte(WRITE_COMMAND, 0x0C);
}
void LcdSetPos(LcdSpi* lcd, uint8_t page, uint8_t col)
{
if (!lcd) {
return;
}
GpioSetValue(PIN_LCD_A0, 0);
LcdWriteByte(lcd->mS0, 0xB0 + page);
LcdWriteByte(lcd->mS0, 0x10 + ((col >> 4) & 0xf0));
LcdWriteByte(lcd->mS0, 0x00 + (col & 0x0f));
}
void setCursorPos(int YPos, int XPos)
{
// 0 is the first line. 1 the second line
switch (YPos)
{
case 0: LcdWriteByte(WRITE_COMMAND, 0x80 + XPos);
break;
case 1: LcdWriteByte(WRITE_COMMAND, 0xC0 + XPos);
break;
}
}
void setXCursorPos(int leftRight,int count)
{
int i;
for ( i = 0; i <count ; ++i)
{
switch(leftRight)
{
case 0: LcdWriteByte(1,0x18); // shift rechts
break;
case 1: LcdWriteByte(1,0x1c); // shift links
break;
}
}
}
void createCustomChar(int characters) {
int ch = 0;
int k = 0;
LcdWriteByte(WRITE_COMMAND, 64 );
for (k = 0; k < characters; k++)
{
for (ch = 0; ch < 8; ch++)
{
LcdWriteByte(WRITE_DATA, charset[k][ch]|(ch << 5)); // schrijf data in CG-RAM |
}
}
LcdWriteByte(WRITE_COMMAND, 0x80);
}
void LcdInit(LcdSpi* lcd)
{
uint8_t i;
// 132x32
uint8_t initSeqTx[] = {0x40, 0xA1, 0xC0, 0xA6, 0xA2, 0x2F, 0xF8, 0x00, 0x23, 0x81, 0x1F, 0xAC, 0x00, 0xAF};
// 128x64
//uint8_t initSeqTx[] = {0x40, 0xA1, 0xC0, 0xA6, 0xA2, 0x2F, 0xF8, 0x00, 0x27, 0x81, 0x10, 0xAC, 0x00, 0xAF};
if (!lcd) {
return;
}
GpioExport(PIN_LCD_nRST);
GpioExport(PIN_LCD_A0);
GpioSetDirection(PIN_LCD_nRST, 1);
GpioSetDirection(PIN_LCD_A0, 1);
GpioSetValue(PIN_LCD_nRST, 0);
usleep(10000);
GpioSetValue(PIN_LCD_nRST, 1);
usleep(10000);
GpioSetValue(PIN_LCD_A0, 0);
for (i = 0; i < sizeof(initSeqTx); i++) {
LcdWriteByte(lcd->mS0, initSeqTx[i]);
usleep(10000);
}
}
/**
* Clears the LCD display and sets the cursor to [0][0]
*/
void lcd_clear()
{
LcdWriteByte(WRITE_COMMAND, 0x01); // Display clear command.
NutDelay(2);
lcd_cursor_home();
}
void LcdArrayLineTwo(char *data, int size){
int i;
LcdWriteByte(WRITE_COMMAND, 0xC0);
NutSleep(2);
for(i = 0; i < size; i = i + 1){
LcdChar(data[i]);
}
}
/**
* Place cursor at the given position.
* @param The x-coordinate on the display (0-15)
* @param The y-coordinate on the display (0-1)
* @return 0 on success, -1 on failure
*/
int lcd_place_cursor_at(int x, int y)
{
if(x < 0 || x > 15 || y < 0 || y > 1)
return -1;
LcdWriteByte(WRITE_COMMAND, 0x80 + (y * 64) + x ); // DD-RAM address counter (cursor pos) to the requested position.
return 0;
}
uint8_t LcdWriteImagePng(LcdSpi* lcd, const char *filename)
{
uint16_t x = 100;
uint16_t y = 100;
uint16_t xm = 0;
uint16_t ym = 0;
uint16_t i = 0;
int c;
gdImagePtr img;
FILE *filePtr;
uint8_t b;
if (!lcd) {
return 1;
}
if (!filename) {
return 2;
}
filePtr = fopen(filename, "rb");
if (filePtr == NULL) {
return 3;
}
img = gdImageCreateFromPng(filePtr);
if (img == NULL) {
return 4;
}
xm = gdImageSX(img);
ym = gdImageSY(img);
printf("%i x %i\n", xm, ym);
if (xm != 132 || ym != 32) {
return 5;
}
for (y = 0; y < ym; y += 8) {
LcdSetPos(lcd, y / 8, 0);
GpioSetValue(PIN_LCD_A0, 1);
for (x = 0; x < xm; x++) {
b = 0;
for (i = 0; i < 8; i++) {
c = gdImageGetPixel(img, x, y + i);
if (img->red[c] < 0x7f || img->green[c] < 0x7f || img->blue[c] < 0x7f) {
//if (c) {
b |= (1 << i);
}
}
LcdWriteByte(lcd->mS0, b);
}
}
fclose(filePtr);
gdImageDestroy(img);
return 0;
}
/**
* Displays the given string on the LCD display at the given location.
* @param string The string to display
* @param x The x-coordinate of the first letter of the string, ranging from 0 - 15
* @param y The y-coordinate of the first letter of the string, ranging from 0 - 1
* @return 0 on success, -1 on failure
*/
int lcd_display_string_at(char* string, int x, int y)
{
if(x < 0 || x > 15 || y < 0 || y > 1)
return -1;
// TODO: TEST CURSOR POSITION
LcdWriteByte(WRITE_COMMAND, 0x80 + (y * 64) + x ); // DD-RAM address counter (cursor pos) to the requested position.
int i;
for(i = 0; (string[i] != '\0') && (i < 16 -x); i++) // Loop through the string and display each character individually.
LcdChar(string[i]);
return 0;
}
void LcdCls(LcdSpi* lcd)
{
uint8_t i;
uint8_t j;
if (!lcd) {
return;
}
for (i = 0; i < 8; i++) {
LcdSetPos(lcd, i, 0);
GpioSetValue(PIN_LCD_A0, 1);
for (j = 0; j < 132; j++) {
LcdWriteByte(lcd->mS0, 0x00);
}
}
}
uint8_t LcdWriteImageScreen(LcdSpi* lcd, ScreenData *screen)
{
uint8_t x = 0;
uint8_t y = 0;
uint16_t i = 0;
uint8_t c;
uint8_t b;
uint8_t xScreen;
uint8_t yScreen;
if (!lcd) {
return 1;
}
if (!screen) {
return 2;
}
xScreen = screen->mX;
yScreen = screen->mY;
for (y = 0; y < yScreen; y += 8) {
LcdSetPos(lcd, y / 8, 0);
GpioSetValue(PIN_LCD_A0, 1);
for (x = 0; x < xScreen; x++) {
b = 0;
for (i = 0; i < 8; i++) {
c = screen->mData[((y + i) * xScreen) + x];
if (c) {
b |= (1 << i);
}
}
LcdWriteByte(lcd->mS0, b);
}
}
if (gDebuglevel >= 100) {
DebugWriteScreen(lcd, screen->mData, xScreen, yScreen);
}
return 0;
}
//clears the Lcd screen
void ClearLcd()
{
LcdWriteByte(WRITE_COMMAND, 0x01);
}
void clearScreen()
{
LcdWriteByte(WRITE_COMMAND, 0x01);
NutDelay(5);
}
/*
* Sets the cursor position to [0][0] (top left, first position)
*/
void lcd_cursor_home()
{
LcdWriteByte(WRITE_COMMAND, 0x02); // Set cursor to home command.
}
/* ����������������������������������������������������������������������� */
void LcdChar(char MyChar)
{
LcdWriteByte(WRITE_DATA, MyChar);
}
/* ����������������������������������������������������������������������� */
void WriteByteToLocation(u_char locationByte, u_char byteToWrite)
{
LcdWriteByte(WRITE_COMMAND, locationByte);
LcdWriteByte(WRITE_DATA, byteToWrite);
}
/*!
* \brief Send data byte to LCD controller.
*
* \param data Byte to send.
*/
static void LcdWriteData(uint8_t data)
{
/* RS high selects data register. */
LCD_RS_SET();
LcdWriteByte(data);
}
/*!
* \brief Send command byte to LCD controller.
*
* \param cmd Byte to send.
*/
static void LcdWriteCmd(uint8_t cmd)
{
/* RS low selects instruction register. */
LCD_RS_CLR();
LcdWriteByte(cmd);
}
