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Merge pull request #5 from PaulKlinger/master

Quellcode durchsuchen 
Some simple functions for manipulating display buffer/partial updates
Dieser Commit ist enthalten in:
Sylaina 2019-12-12 09:35:15 +01:00 committet von GitHub
Commit 525ecf6775
Es konnte kein GPG-Schlüssel zu dieser Signatur gefunden werden
GPG-Schlüssel-ID: 4AEE18F83AFDEB23
2 geänderte Dateien mit 26 neuen und 1 gelöschten Zeilen
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22
lcd.c
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@ -155,8 +155,11 @@ void lcd_init(uint8_t dispAttr){
lcd_clrscr();
}
void lcd_gotoxy(uint8_t x, uint8_t y){
if( x > (DISPLAY_WIDTH/sizeof(FONT[0])) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
x = x * sizeof(FONT[0]);
lcd_goto_xpix_y(x,y);
}
void lcd_goto_xpix_y(uint8_t x, uint8_t y){
if( x > (DISPLAY_WIDTH) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
cursorPosition.x=x;
cursorPosition.y=y;
#if defined (SSD1306) || defined (SSD1309)
@ -488,4 +491,21 @@ void lcd_display() {
}
#endif
}
void lcd_clear_buffer() {
for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i]));
}
}
uint8_t lcd_check_buffer(uint8_t x, uint8_t y) {
if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return 0; // out of Display
return displayBuffer[(y / (DISPLAY_HEIGHT/8))][x] & (1 << (y % (DISPLAY_HEIGHT/8)));
}
void lcd_display_block(uint8_t x, uint8_t line, uint8_t width) {
if (line > (DISPLAY_HEIGHT/8-1) || x > DISPLAY_WIDTH - 1){return;}
if (x + width > DISPLAY_WIDTH) { // no -1 here, x alone is width 1
width = DISPLAY_WIDTH - x;
}
lcd_goto_xpix_y(x,line);
lcd_data(&displayBuffer[line][x], width);
}
#endif

5
lcd.h
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@ -124,6 +124,8 @@ extern "C" {
void lcd_clrscr(void); // clear screen (and buffer at GRFAICMODE)
void lcd_gotoxy(uint8_t x, uint8_t y); // set curser at pos x, y. x means character,
// y means line (page, refer lcd manual)
void lcd_goto_xpix_y(uint8_t x, uint8_t y); // set curser at pos x, y. x means pixel,
// y means line (page, refer lcd manual)
void lcd_putc(char c); // print character on screen at TEXTMODE
// at GRAPHICMODE print character to buffer
void lcd_charMode(uint8_t mode); // set size of chars
@ -136,6 +138,9 @@ extern "C" {
void lcd_fillCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color);
void lcd_drawBitmap(uint8_t x, uint8_t y, const uint8_t picture[], uint8_t width, uint8_t height, uint8_t color);
void lcd_display(void); // copy buffer to display RAM
void lcd_clear_buffer(void); // clear display buffer
uint8_t lcd_check_buffer(uint8_t x, uint8_t y); // read a pixel value from the display buffer
void lcd_display_block(uint8_t x, uint8_t line, uint8_t width); // display (part of) a display line
#endif
#ifdef __cplusplus