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1
i2c.c
1
i2c.c
@ -11,6 +11,7 @@
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#if defined (__AVR_ATmega328__) || defined(__AVR_ATmega328P__) || \
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defined(__AVR_ATmega168P__) || defined(__AVR_ATmega168PA__) || \
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defined(__AVR_ATmega88P__) || \
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defined(__AVR_ATmega8__) || \
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defined(__AVR_ATmega48P__) || \
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defined(__AVR_ATmega1284P__) || \
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defined (__AVR_ATmega324A__) || defined (__AVR_ATmega324P__) || defined (__AVR_ATmega324PA__) || \
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48
lcd.c
48
lcd.c
@ -64,7 +64,7 @@ static uint8_t displayBuffer[DISPLAY_HEIGHT/8][DISPLAY_WIDTH];
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const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
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LCD_DISP_OFF, // Display OFF (sleep mode)
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0x20, 0b00, // Set Memory Addressing Mode
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0x20, 0b00, // Set Memory Addressing Mode
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// 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode;
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// 10=Page Addressing Mode (RESET); 11=Invalid
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0xB0, // Set Page Start Address for Page Addressing Mode, 0-7
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@ -72,20 +72,20 @@ const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
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0x00, // --set low column address
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0x10, // --set high column address
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0x40, // --set start line address
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0x81, 0x3F, // Set contrast control register
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0x81, 0x3F, // Set contrast control register
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0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
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0xA6, // Set display mode. A6=Normal; A7=Inverse
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0xA8, 0x3F, // Set multiplex ratio(1 to 64)
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0xA8, DISPLAY_HEIGHT-1, // Set multiplex ratio(1 to 64)
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0xA4, // Output RAM to Display
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// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
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0xD3, 0x00, // Set display offset. 00 = no offset
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// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
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0xD3, 0x00, // Set display offset. 00 = no offset
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0xD5, // --set display clock divide ratio/oscillator frequency
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0xF0, // --set divide ratio
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0xD9, 0x22, // Set pre-charge period
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0xDA, 0x12, // Set com pins hardware configuration
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0xD9, 0x22, // Set pre-charge period
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0xDA, 0x12, // Set com pins hardware configuration
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0xDB, // --set vcomh
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0x20, // 0x20,0.77xVcc
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0x8D, 0x14, // Set DC-DC enable
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0x8D, 0x14, // Set DC-DC enable
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};
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@ -264,15 +264,14 @@ void lcd_putc(char c){
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}
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}
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}
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i2c_start(LCD_I2C_ADR << 1);
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i2c_byte(0x40);
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uint8_t data[sizeof(FONT[0])*2];
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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i2c_byte(doubleChar[i] & 0xff);
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i2c_byte(doubleChar[i] & 0xff);
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data[i<<1]=(doubleChar[i] & 0xff);
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data[(i<<1)+1]=(doubleChar[i] & 0xff);
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}
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i2c_stop();
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lcd_data(data, sizeof(FONT[0])*2);
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#if defined SSD1306
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uint8_t commandSequence[] = {0xb0+cursorPosition.y+1,
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@ -288,15 +287,13 @@ void lcd_putc(char c){
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#endif
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lcd_command(commandSequence, sizeof(commandSequence));
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i2c_start(LCD_I2C_ADR << 1);
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i2c_byte(0x40);
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for (uint8_t j = 0; j < sizeof(FONT[0]); j++)
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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i2c_byte(doubleChar[j] >> 8);
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i2c_byte(doubleChar[j] >> 8);
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data[i<<1]=(doubleChar[i] >> 8);
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data[(i<<1)+1]=(doubleChar[i] >> 8);
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}
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i2c_stop();
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lcd_data(data, sizeof(FONT[0])*2);
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commandSequence[0] = 0xb0+cursorPosition.y;
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#if defined SSD1306
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@ -308,14 +305,13 @@ void lcd_putc(char c){
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lcd_command(commandSequence, sizeof(commandSequence));
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cursorPosition.x += sizeof(FONT[0])*2;
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} else {
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i2c_start(LCD_I2C_ADR << 1);
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i2c_byte(0x40);
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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uint8_t data[sizeof(FONT[0])];
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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i2c_byte(pgm_read_byte(&(FONT[(uint8_t)c][i])));
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data[i]=(pgm_read_byte(&(FONT[(uint8_t)c][i])));
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}
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i2c_stop();
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lcd_data(data, sizeof(FONT[0]));
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cursorPosition.x += sizeof(FONT[0]);
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}
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#endif
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@ -343,9 +339,9 @@ void lcd_puts_p(const char* progmem_s){
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void lcd_drawPixel(uint8_t x, uint8_t y, uint8_t color){
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if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return; // out of Display
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if( color == WHITE){
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displayBuffer[(y / (DISPLAY_HEIGHT/8))][x] |= (1 << (y % (DISPLAY_HEIGHT/8)));
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displayBuffer[(y / 8)][x] |= (1 << (y % 8));
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} else {
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displayBuffer[(y / (DISPLAY_HEIGHT/8))][x] &= ~(1 << (y % (DISPLAY_HEIGHT/8)));
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displayBuffer[(y / 8)][x] &= ~(1 << (y % 8));
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}
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}
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void lcd_drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color){
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@ -24,7 +24,7 @@ Memory:
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</tr>
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<tr>
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<td>I2C-Core</td>
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<td>120 Bytes</td>
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<td>234 Bytes</td>
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<td>0 Bytes</td>
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</tr>
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<tr>
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@ -34,12 +34,12 @@ Memory:
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</tr>
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<tr>
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<td>OLED (Text-Mode)</td>
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<td>1475 Bytes</td>
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<td>1449 Bytes</td>
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<td>3 Bytes</td>
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</tr>
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<tr>
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<td>OLED (Graphic-Mode)</td>
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<td>2473 Bytes</td>
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<td>2403 Bytes</td>
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<td>1027 Bytes</td>
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</tr>
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</table>
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