/////////////////////////////////////////////////////////////////////////////
// Transfers a Bitmap within given boundaries to the LCD
// IN: bitmap
// OUT: returns < 0 on errors
/////////////////////////////////////////////////////////////////////////////
s32 APP_LCD_BitmapPrint(mios32_lcd_bitmap_t bitmap)
{
int line;
int y_lines = (bitmap.height >> 3);
for(line=0; line<y_lines; ++line) {
// calculate pointer to bitmap line
u8 *memory_ptr = bitmap.memory + line * bitmap.line_offset;
// set graphical cursor after second line has reached
if( line > 0 ) {
mios32_lcd_x -= bitmap.width;
mios32_lcd_y += 8;
APP_LCD_GCursorSet(mios32_lcd_x, mios32_lcd_y);
}
// transfer bitmap
int x;
for(x=0; x<bitmap.width; ++x)
APP_LCD_Data(*memory_ptr++);
}
// fix graphical cursor if more than one line has been print
if( y_lines >= 1 ) {
mios32_lcd_y = mios32_lcd_y - (bitmap.height-8);
APP_LCD_GCursorSet(mios32_lcd_x, mios32_lcd_y);
}
return 0; // no error
}
/////////////////////////////////////////////////////////////////////////////
// Clear Screen
// IN: -
// OUT: returns < 0 on errors
/////////////////////////////////////////////////////////////////////////////
s32 APP_LCD_Clear(void)
{
s32 error = 0;
u8 x, y;
// use default font
MIOS32_LCD_FontInit((u8 *)GLCD_FONT_NORMAL);
// select all LCDs
error |= MIOS32_LCD_CursorSet(0, 0);
// send data
for(y=0; y<APP_LCD_HEIGHT; y=y+4) {
error |= APP_LCD_GCursorSet(0, y);
MIOS32_BOARD_J15_DataSet(0x00);
MIOS32_BOARD_J15_RS_Set(1); // RS pin used to control DC
for(x=0; x<APP_LCD_WIDTH; ++x){
MIOS32_BOARD_J15_SerDataShift(0x00);
}
}
// set X=0, Y=0
error |= MIOS32_LCD_CursorSet(0, 0);
return error;
}
/////////////////////////////////////////////////////////////////////////////
//! Sets graphical cursor to given position<BR>
//! Only relevant for GLCDs
//! \param[in] x position
//! \param[in] y position
//! \return < 0 on errors
/////////////////////////////////////////////////////////////////////////////
s32 MIOS32_LCD_GCursorSet(u16 x, u16 y)
{
mios32_lcd_x = x;
mios32_lcd_y = y;
// forward new cursor position to app driver
return APP_LCD_GCursorSet(x, y);
}
/////////////////////////////////////////////////////////////////////////////
// Sets cursor to given position
// IN: <column> and <line>
// OUT: returns < 0 on errors
/////////////////////////////////////////////////////////////////////////////
s32 APP_LCD_CursorSet(u16 column, u16 line)
{
s32 error = 0;
#if 0
// exit with error if line is not in allowed range
if( line >= MIOS32_LCD_MAX_MAP_LINES )
return -1;
// exit if mapped line >= 8 (not supported by KS0108)
u8 mapped_line = mios32_lcd_cursor_map[line];
if( mapped_line >= 8 )
return -2;
// ...
return error;
#else
// mios32_lcd_x/y set by MIOS32_LCD_CursorSet() function
return APP_LCD_GCursorSet(mios32_lcd_x, mios32_lcd_y);
#endif
}
/////////////////////////////////////////////////////////////////////////////
// Transfers a Bitmap within given boundaries to the LCD
// IN: bitmap
// OUT: returns < 0 on errors
/////////////////////////////////////////////////////////////////////////////
s32 APP_LCD_BitmapPrint(mios32_lcd_bitmap_t bitmap)
{
int stored_mios32_lcd_y = mios32_lcd_y;
int line;
int y_lines = (bitmap.height >> 2); // we need two write accesses per 8bit line
for(line=0; line<y_lines; ++line) {
// set graphical cursor after second line has reached
if( line > 0 ) {
mios32_lcd_x -= bitmap.width;
mios32_lcd_y += 4;
APP_LCD_GCursorSet(mios32_lcd_x, mios32_lcd_y);
}
// transfer bitmap
switch( bitmap.colour_depth ) {
case 2: { // depth 2
// calculate pointer to bitmap line
u8 *memory_ptr = bitmap.memory + line * bitmap.line_offset;
int x;
for(x=0; x<bitmap.width; ++x)
APP_LCD_Data(*memory_ptr++);
} break;
default: { // depth 1 or others
// calculate pointer to bitmap line
u8 *memory_ptr = bitmap.memory + (line / 2) * bitmap.line_offset;
if( line & 1 ) {
int x;
for(x=0; x<bitmap.width; ++x) {
u8 b = 0;
if( *memory_ptr & (1 << 4) ) b |= (3 << 0);
if( *memory_ptr & (1 << 5) ) b |= (3 << 2);
if( *memory_ptr & (1 << 6) ) b |= (3 << 4);
if( *memory_ptr & (1 << 7) ) b |= (3 << 6);
APP_LCD_Data(b);
++memory_ptr;
}
} else {
int x;
for(x=0; x<bitmap.width; ++x) {
u8 b = 0;
if( *memory_ptr & (1 << 0) ) b |= (3 << 0);
if( *memory_ptr & (1 << 1) ) b |= (3 << 2);
if( *memory_ptr & (1 << 2) ) b |= (3 << 4);
if( *memory_ptr & (1 << 3) ) b |= (3 << 6);
APP_LCD_Data(b);
++memory_ptr;
}
}
}
}
}
// fix graphical cursor if Y position has changed
if( y_lines > 1 ) {
mios32_lcd_y = stored_mios32_lcd_y;
APP_LCD_GCursorSet(mios32_lcd_x, mios32_lcd_y);
}
return 0; // no error
}
