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Update lcd.c

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pull/7/head
Sylaina 6 years ago committed by GitHub
parent dc337751ab
commit 981140645e
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1 changed files with 115 additions and 34 deletions
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149
lcd.c
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@ -39,7 +39,7 @@
*
* at GRAPHICMODE lib needs static SRAM for display:
* DISPLAY-WIDTH * DISPLAY-HEIGHT + 2 bytes
*
*
* at TEXTMODE lib need static SRAM for display:
* 2 bytes (cursorPosition)
*/
@ -49,8 +49,8 @@
#include <string.h>
static struct {
uint8_t x;
uint8_t y;
uint8_t x;
uint8_t y;
} cursorPosition;
#if defined GRAPHICMODE
#include <stdlib.h>
@ -61,37 +61,37 @@ static uint8_t displayBuffer[DISPLAY_HEIGHT/8][DISPLAY_WIDTH];
#endif
const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
LCD_DISP_OFF, // Display OFF (sleep mode)
0x20, 0b00, // Set Memory Addressing Mode
// 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode;
// 10=Page Addressing Mode (RESET); 11=Invalid
0xB0, // Set Page Start Address for Page Addressing Mode, 0-7
0xC8, // Set COM Output Scan Direction
0x00, // --set low column address
0x10, // --set high column address
0x40, // --set start line address
0x81, 0x3F, // Set contrast control register
0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
0xA6, // Set display mode. A6=Normal; A7=Inverse
0xA8, 0x3F, // Set multiplex ratio(1 to 64)
0xA4, // Output RAM to Display
// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
0xD3, 0x00, // Set display offset. 00 = no offset
0xD5, // --set display clock divide ratio/oscillator frequency
0xF0, // --set divide ratio
0xD9, 0x22, // Set pre-charge period
0xDA, 0x12, // Set com pins hardware configuration
0xDB, // --set vcomh
0x20, // 0x20,0.77xVcc
0x8D, 0x14, // Set DC-DC enable
const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
LCD_DISP_OFF, // Display OFF (sleep mode)
0x20, 0b00, // Set Memory Addressing Mode
// 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode;
// 10=Page Addressing Mode (RESET); 11=Invalid
0xB0, // Set Page Start Address for Page Addressing Mode, 0-7
0xC8, // Set COM Output Scan Direction
0x00, // --set low column address
0x10, // --set high column address
0x40, // --set start line address
0x81, 0x3F, // Set contrast control register
0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
0xA6, // Set display mode. A6=Normal; A7=Inverse
0xA8, 0x3F, // Set multiplex ratio(1 to 64)
0xA4, // Output RAM to Display
// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
0xD3, 0x00, // Set display offset. 00 = no offset
0xD5, // --set display clock divide ratio/oscillator frequency
0xF0, // --set divide ratio
0xD9, 0x22, // Set pre-charge period
0xDA, 0x12, // Set com pins hardware configuration
0xDB, // --set vcomh
0x20, // 0x20,0.77xVcc
0x8D, 0x14, // Set DC-DC enable
};
#pragma mark LCD COMMUNICATION
void lcd_command(uint8_t cmd[], uint8_t size) {
i2c_start((LCD_I2C_ADR << 1) | 0);
i2c_byte(0x00); // 0x00 for command, 0x40 for data
i2c_byte(0x00); // 0x00 for command, 0x40 for data
for (uint8_t i=0; i<size; i++) {
i2c_byte(cmd[i]);
}
@ -99,7 +99,7 @@ void lcd_command(uint8_t cmd[], uint8_t size) {
}
void lcd_data(uint8_t data[], uint16_t size) {
i2c_start((LCD_I2C_ADR << 1) | 0);
i2c_byte(0x40); // 0x00 for command, 0x40 for data
i2c_byte(0x40); // 0x00 for command, 0x40 for data
for (uint16_t i = 0; i<size; i++) {
i2c_byte(data[i]);
}
@ -132,7 +132,7 @@ void lcd_gotoxy(uint8_t x, uint8_t y){
void lcd_clrscr(void){
#ifdef GRAPHICMODE
for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i]));
memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i]));
lcd_gotoxy(0,i);
lcd_data(displayBuffer[i], sizeof(displayBuffer[i]));
}
@ -217,22 +217,103 @@ void lcd_putc(char c){
}
// print char at display
#ifdef GRAPHICMODE
#ifdef BIGCHAR
uint16_t doubleChar[sizeof(FONT[0])];
uint8_t dChar;
for (uint8_t i=0; i < sizeof(FONT[0]); i++) {
doubleChar[i] = 0;
dChar = pgm_read_byte(&(FONT[(uint8_t)c][i]));
for (uint8_t j=0; j<8; j++) {
if ((dChar & (1 << j))) {
doubleChar[i] |= (1 << (j*2));
doubleChar[i] |= (1 << ((j*2)+1));
}
}
}
for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
{
// load bit-pattern from flash
displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)] = doubleChar[i] >> 8;
displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)+1] = doubleChar[i] >> 8;
displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)] = doubleChar[i] & 0xff;
displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)+1] = doubleChar[i] & 0xff;
}
#else
for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
{
// load bit-pattern from flash
displayBuffer[cursorPosition.y][cursorPosition.x+i] =pgm_read_byte(&(FONT[(uint8_t)c][i]));
}
#endif
#elif defined TEXTMODE
#ifdef BIGCHAR
uint16_t doubleChar[sizeof(FONT[0])];
uint8_t dChar;
for (uint8_t i=0; i < sizeof(FONT[0]); i++) {
doubleChar[i] = 0;
dChar = pgm_read_byte(&(FONT[(uint8_t)c][i]));
for (uint8_t j=0; j<8; j++) {
if ((dChar & (1 << j))) {
doubleChar[i] |= (1 << (j*2));
doubleChar[i] |= (1 << ((j*2)+1));
}
}
}
i2c_start(LCD_I2C_ADR << 1);
i2c_byte(0x40);
for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
{
// print font to ram, print 6 columns
i2c_byte(doubleChar[i] & 0xff);
i2c_byte(doubleChar[i] & 0xff);
}
i2c_stop();
#if defined SSD1306
uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f};
#elif defined SH1106
uint8_t commandSequence[] = {0xb0+cursorPosition.y+1, 0x21, 0x00+((2+cursorPosition.x) & (0x0f)), 0x10+( ((2+cursorPosition.x) & (0xf0)) >> 4 ), 0x7f};
#endif
lcd_command(commandSequence, sizeof(commandSequence));
i2c_start(LCD_I2C_ADR << 1);
i2c_byte(0x40);
for (uint8_t j = 0; j < sizeof(FONT[0]); j++)
{
// print font to ram, print 6 columns
i2c_byte(doubleChar[j] >> 8);
i2c_byte(doubleChar[j] >> 8);
}
i2c_stop();
commandSequence[0] = 0xb0+cursorPosition.y;
#if defined SSD1306
commandSequence[2] = cursorPosition.x+(2*sizeof(FONT[0]));
#elif defined SH1106
commandSequence[2] = 0x00+((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0x0f));
commandSequence[3] = 0x10+( ((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0xf0)) >> 4 );
#endif
lcd_command(commandSequence, sizeof(commandSequence));
#else
i2c_start(LCD_I2C_ADR << 1);
i2c_byte(0x40);
for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
{
// print font to ram, print 6 columns
i2c_byte(pgm_read_byte(&(FONT[(uint8_t)c][i])));
}
i2c_stop();
#endif
#endif
#ifdef BIGCHAR
cursorPosition.x += sizeof(FONT[0])*2;
#else
cursorPosition.x += sizeof(FONT[0]);
#endif
break;
}
@ -360,5 +441,5 @@ void lcd_display() {
lcd_data(displayBuffer[i], sizeof(displayBuffer[i]));
}
#endif
#endif
}
#endif

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