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Update lcd.c

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adds graphic procedures
pull/7/head
Sylaina 7 years ago committed by GitHub
parent 743d5ade88
commit 77ee1b280c
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1 changed files with 261 additions and 43 deletions
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lcd.c
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@ -37,13 +37,20 @@
* first dev-version only for I2C-Connection
* at ATMega328P like Arduino Uno
*
* at GRAPHICMODE lib needs SRAM for display
* DISPLAY-WIDTH * DISPLAY-HEIGHT + 2 bytes
*/
/* Standard ASCII 6x8 font */
#include "lcd.h"
#include <avr/interrupt.h>
#include <string.h>
#if defined GRAPHICMODE
#include <stdlib.h>
static uint8_t displayBuffer[DISPLAYSIZE];
uint16_t actualIndex = 0;
#endif
/* Standard ASCII 6x8 font */
static const uint8_t ssd1306oled_font6x8 [] PROGMEM = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // sp
0x00, 0x00, 0x00, 0x2f, 0x00, 0x00, // !
@ -177,7 +184,22 @@ const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
};
void lcd_command(uint8_t cmd[], uint8_t size) {
i2c_start(LCD_I2C_ADDR);
i2c_byte(0x00); // 0x00 for command, 0x40 for data
for (uint8_t i=0; i<size; i++) {
i2c_byte(cmd[i]);
}
i2c_stop();
}
void lcd_data(uint8_t data[], uint16_t size) {
i2c_start(LCD_I2C_ADDR);
i2c_byte(0x40); // 0x00 for command, 0x40 for data
for (uint16_t i = 0; i<size; i++) {
i2c_byte(data[i]);
}
i2c_stop();
}
void lcd_init(uint8_t dispAttr){
i2c_init();
uint8_t commandSequence[sizeof(init_sequence)+1];
@ -191,44 +213,52 @@ void lcd_init(uint8_t dispAttr){
void lcd_home(void){
lcd_gotoxy(0, 0);
}
void lcd_command(uint8_t cmd[], uint8_t size) {
void lcd_invert(uint8_t invert){
i2c_start(LCD_I2C_ADDR);
i2c_byte(0x00); // 0x00 for command, 0x40 for data
for (uint8_t i=0; i<size; i++) {
i2c_byte(cmd[i]);
uint8_t commandSequence[1];
if (invert == YES) {
commandSequence[0] = 0xA7;
} else {
commandSequence[0] = 0xA7;
}
i2c_stop();
lcd_command(commandSequence, 1);
}
void lcd_data(uint8_t data[], uint16_t size) {
i2c_start(LCD_I2C_ADDR);
i2c_byte(0x40); // 0x00 for command, 0x40 for data
for (uint8_t i = 0; i<size; i++) {
i2c_byte(data[i]);
void lcd_set_contrast(uint8_t contrast){
uint8_t commandSequence[2] = {0x81, contrast};
lcd_command(commandSequence, sizeof(commandSequence));
}
void lcd_puts(const char* s){
while (*s) {
lcd_putc(*s++);
}
i2c_stop();
}
void lcd_gotoxy(uint8_t x, uint8_t y){
if( x > (DISPLAY_WIDTH/6) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
x = x * 6; // one char: 6 pixel width
#if defined SSD1306
uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f};
#elif defined SH1106
uint8_t commandSequence[] = {0xb0+y, 0x21, 0x00+((2+x) & (0x0f)), 0x10+( ((2+x) & (0xf0)) >> 4 ), 0x7f};
#endif
lcd_command(commandSequence, sizeof(commandSequence));
void lcd_puts_p(const char* progmem_s){
register uint8_t c;
while ((c = pgm_read_byte(progmem_s++))) {
lcd_putc(c);
}
}
#if defined TEXTMODE
void lcd_clrscr(void){
uint8_t clearLine[DISPLAY_WIDTH];
memset(clearLine, 0x00, DISPLAY_WIDTH);
for (uint8_t j = 0; j <= DISPLAY_HEIGHT/8-1; j++){
for (uint8_t j = 0; j < DISPLAY_HEIGHT/8; j++){
lcd_gotoxy(0,j);
lcd_data(clearLine, sizeof(clearLine));
}
lcd_home();
}
void lcd_gotoxy(uint8_t x, uint8_t y) {
if( x > (DISPLAY_WIDTH/6) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
x = x * 6; // one char: 6 pixel width
#if defined SSD1306
uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f};
#elif defined SH1106
uint8_t commandSequence[] = {0xb0+y, 0x21, 0x00+((2+x) & (0x0f)), 0x10+( ((2+x) & (0xf0)) >> 4 ), 0x7f};
#endif
lcd_command(commandSequence, sizeof(commandSequence));
}
void lcd_putc(char c){
if((c > 127 ||
c < 32) &&
@ -313,28 +343,216 @@ void lcd_putc(char c){
}
i2c_stop();
}
void lcd_puts(const char* s){
while (*s) {
lcd_putc(*s++);
#elif defined GRAPHICMODE
void lcd_clrscr(void){
memset(displayBuffer, 0x00, sizeof(displayBuffer));
#if defined SSD1306
lcd_data(displayBuffer, sizeof(displayBuffer));
#elif defined SH1106
for (uint8_t i=0; i <= DISPLAY_HEIGHT/8; i++) {
uint8_t actualLine[DISPLAY_WIDTH];
for (uint8_t j=0; j< DISPLAY_WIDTH; j++) {
actualLine[j]=displayBuffer[i*DISPLAY_WIDTH+j];
}
lcd_data(actualLine, sizeof(actualLine));
lcd_gotoxy(0, i);
}
#endif
lcd_home();
}
void lcd_puts_p(const char* progmem_s){
register uint8_t c;
while ((c = pgm_read_byte(progmem_s++))) {
lcd_putc(c);
void lcd_gotoxy(uint8_t x, uint8_t y){
if( x > (DISPLAY_WIDTH/6) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
x = x * 6; // one char: 6 pixel width
actualIndex = (x)+(y*DISPLAY_WIDTH);
#if defined SSD1306
uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f};
#elif defined SH1106
uint8_t commandSequence[] = {0xb0+y, 0x21, 0x00+((2+x) & (0x0f)), 0x10+( ((2+x) & (0xf0)) >> 4 ), 0x7f};
#endif
lcd_command(commandSequence, sizeof(commandSequence));
}
void lcd_putc(char c){
if((actualIndex+1)%127 != 0){
if((c > 127 ||
c < 32) &&
(c != 'ü' &&
c != 'ö' &&
c != '°' &&
c != 'ä' &&
c != 'ß' &&
c != 'Ü' &&
c != 'Ö' &&
c != 'Ä' ) ) return;
switch (c) {
case 'ü':
c = 95; // ü - 188
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'ö':
c = 99; // ö
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case '°':
c = 101; // °
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'ä':
c = 97; // ä
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'ß':
c = 102; // ß
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'Ü':
c = 96; // Ü
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'Ö':
c = 100; // Ö
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
case 'Ä':
c = 98; // Ä
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]); // print font to ram, print 6 columns
}
break;
default:
c -= 32;
for (uint8_t i = 0; i < 6; i++)
{
displayBuffer[actualIndex+i] = pgm_read_byte(&ssd1306oled_font6x8[c * 6 + i]);
}
break;
}
}
actualIndex += 6;
}
void lcd_invert(uint8_t invert){
i2c_start(LCD_I2C_ADDR);
uint8_t commandSequence[1];
if (invert == YES) {
commandSequence[0] = 0xA7;
void lcd_drawPixel(uint8_t x, uint8_t y, uint8_t color){
if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return; // out of Display
if( color == WHITE){
displayBuffer[(uint8_t)(y / (DISPLAY_HEIGHT/8)) * DISPLAY_WIDTH +x] |= (1 << (y % (DISPLAY_HEIGHT/8)));
} else {
commandSequence[0] = 0xA7;
displayBuffer[(uint8_t)(y / (DISPLAY_HEIGHT/8)) * DISPLAY_WIDTH +x] &= ~(1 << (y % (DISPLAY_HEIGHT/8)));
}
lcd_command(commandSequence, 1);
}
void lcd_set_contrast(uint8_t contrast){
uint8_t commandSequence[2] = {0x81, contrast};
lcd_command(commandSequence, sizeof(commandSequence));
void lcd_drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color){
if( x1 > DISPLAY_WIDTH-1 ||
x2 > DISPLAY_WIDTH-1 ||
y1 > DISPLAY_HEIGHT-1 ||
y2 > DISPLAY_HEIGHT-1) return;
int dx = abs(x2-x1), sx = x1<x2 ? 1 : -1;
int dy = -abs(y2-y1), sy = y1<y2 ? 1 : -1;
int err = dx+dy, e2; /* error value e_xy */
while(1){
lcd_drawPixel(x1, y1, color);
if (x1==x2 && y1==y2) break;
e2 = 2*err;
if (e2 > dy) { err += dy; x1 += sx; } /* e_xy+e_x > 0 */
if (e2 < dx) { err += dx; y1 += sy; } /* e_xy+e_y < 0 */
}
}
void lcd_drawRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){
if( px1 > DISPLAY_WIDTH-1 ||
px2 > DISPLAY_WIDTH-1 ||
py1 > DISPLAY_HEIGHT-1 ||
py2 > DISPLAY_HEIGHT-1) return;
lcd_drawLine(px1, py1, px2, py1, color);
lcd_drawLine(px2, py1, px2, py2, color);
lcd_drawLine(px2, py2, px1, py2, color);
lcd_drawLine(px1, py2, px1, py1, color);
}
void lcd_fillRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){
if( px1 > px2){
uint8_t temp = px1;
px1 = px2;
px2 = temp;
temp = py1;
py1 = py2;
py2 = temp;
}
for (uint8_t i=0; i<=(py2-py1); i++){
lcd_drawLine(px1, py1+i, px2, py1+i, color);
}
}
void lcd_drawCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color){
if( ((center_x + radius) > DISPLAY_WIDTH-1) ||
((center_y + radius) > DISPLAY_HEIGHT-1) ||
center_x < radius ||
center_y < radius) return;
int16_t f = 1 - radius;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * radius;
int16_t x = 0;
int16_t y = radius;
lcd_drawPixel(center_x , center_y+radius, color);
lcd_drawPixel(center_x , center_y-radius, color);
lcd_drawPixel(center_x+radius, center_y , color);
lcd_drawPixel(center_x-radius, center_y , color);
while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
lcd_drawPixel(center_x + x, center_y + y, color);
lcd_drawPixel(center_x - x, center_y + y, color);
lcd_drawPixel(center_x + x, center_y - y, color);
lcd_drawPixel(center_x - x, center_y - y, color);
lcd_drawPixel(center_x + y, center_y + x, color);
lcd_drawPixel(center_x - y, center_y + x, color);
lcd_drawPixel(center_x + y, center_y - x, color);
lcd_drawPixel(center_x - y, center_y - x, color);
}
}
void lcd_fillCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color) {
for(uint8_t i=0; i<= radius;i++){
lcd_drawCircle(center_x, center_y, i, color);
}
}
void lcd_display() {
#if defined SSD1306
lcd_data(displayBuffer, sizeof(displayBuffer));
#elif defined SH1106
for (uint8_t i=0; i < DISPLAY_HEIGHT/8; i++) {
lcd_gotoxy(0, i);
uint8_t actualLine[DISPLAY_WIDTH];
for (uint8_t j=0; j < DISPLAY_WIDTH; j++) {
actualLine[j]=displayBuffer[i*DISPLAY_WIDTH+j];
}
lcd_data(actualLine, sizeof(actualLine));
}
#endif
}
#endif

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