void update_display()
{
// update display
LCDclear();
for(int i=0; i<linebuff.size(); i++)
LCDdrawstring(0, i*8, (char*)linebuff[i].c_str());
// drawing buttom line
for (int i=0; i<83; i+=2)
LCDdrawline(i, 40, i, 40, BLACK);
// drawing battery
LCDdrawrect(70, 42, 12, 5, BLACK);
LCDdrawrect(81, 43, 3, 3, BLACK);
// battery charge state
battery_level = (battery_level>100) ? 100 : battery_level;
battery_level = (battery_level<0) ? 0 : battery_level;
LCDfillrect(70, 43, battery_level/10+1, 4, BLACK);
// battery plugged state
if(battery_plugged)
{
LCDdrawline(66, 43, 68, 43, BLACK);
LCDdrawline(66, 45, 68, 45, BLACK);
LCDfillrect(63, 42, 3, 5, BLACK);
LCDfillrect(61, 43, 2, 3, BLACK);
LCDdrawline(58, 44, 61, 44, BLACK);
LCDdrawline(56, 45, 58, 45, BLACK);
}
}
int main (void)
{
// print infos
printf("Raspberry Pi PCD8544 test\n");
printf("========================================\n");
printf("CLK on Port %i \n", _sclk);
printf("DIN on Port %i \n", _din);
printf("DC on Port %i \n", _dc);
printf("CS on Port %i \n", _cs);
printf("RST on Port %i \n", _rst);
printf("========================================\n");
// check wiringPi setup
if (wiringPiSetup() == -1)
{
printf("wiringPi-Error\n");
exit(1);
}
// init and clear lcd
LCDInit(_sclk, _din, _dc, _cs, _rst, contrast);
LCDclear();
// turn all the pixels on (a handy test)
printf("Test: All pixels on.\n");
LCDcommand(PCD8544_DISPLAYCONTROL | PCD8544_DISPLAYALLON);
delay(1000);
// back to normal
printf("Test: All pixels off.\n");
LCDcommand(PCD8544_DISPLAYCONTROL | PCD8544_DISPLAYNORMAL);
LCDclear();
// display logo
printf("Test: Display logo.\n");
LCDshowLogo();
delay(2000);
LCDclear();
// draw a single pixel
printf("Test: Display single pixel.\n");
LCDsetPixel(10, 10, BLACK);
LCDdisplay();
delay(2000);
LCDclear();
// draw many lines
printf("Test: Draw many lines.\n");
int i;
for (i=0; i<84; i+=4) {
LCDdrawline(0, 0, i, 47, BLACK);
}
for (i=0; i<48; i+=4) {
LCDdrawline(0, 0, 83, i, BLACK);
}
LCDdisplay();
delay(2000);
LCDclear();
// draw rectangles
printf("Test: Draw rectangles.\n");
for (i=0; i<48; i+=2) {
LCDdrawrect(i, i, 96-i, 48-i, BLACK);
}
LCDdisplay();
delay(2000);
LCDclear();
// draw multiple rectangles
printf("Test: Draw multiple rectangles.\n");
for (i=0; i<48; i++) {
// alternate colors for moire effect
LCDfillrect(i, i, 84-i, 48-i, i%2);
}
LCDdisplay();
delay(2000);
LCDclear();
// draw mulitple circles
printf("Test: Draw multiple circles.\n");
for (i=0; i<48; i+=2) {
LCDdrawcircle(41, 23, i, BLACK);
}
LCDdisplay();
delay(2000);
LCDclear();
// draw the first ~120 characters in the font
printf("Test: Draw the first ~120 chars.\n");
for (i=0; i < 64; i++) {
LCDdrawchar((i % 14) * 6, (i/14) * 8, i);
}
LCDdisplay();
delay(2000);
for (i=0; i < 64; i++) {
LCDdrawchar((i % 14) * 6, (i/14) * 8, i + 64);
}
LCDdisplay();
delay(2000);
LCDclear();
return 0;
}