ADAFRUIT SSD1331 SPI OLED DISPLAY

// Color definitions
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF

#include <Adafruit_GFX_AS.h>
#include <Adafruit_SSD1331.h>
#include <SPI.h>

// Option 1: use any pins but a little slower
Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, mosi, sclk, rst);

// Option 2: must use the hardware SPI pins
// (for UNO thats sclk = 13 and sid = 11) and pin 10 must be
// an output. This is much faster - also required if you want
// to use the microSD card (see the image drawing example)
//Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, rst);

float p = 3.1415926;

void setup(void) {

display.begin();

SPI.setDataMode(SPI_MODE0); //Set the SPI data mode 0
SPI.setClockDivider(SPI_CLOCK_DIV32); // 2.25 MHz

uint16_t time = millis();
display.fillScreen(BLACK);
time = millis() - time;

lcdTestPattern();
delay(1000);

display.fillScreen(BLACK);
display.setCursor(0,0);
display.print("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa");
delay(1000);

// tft print function!
tftPrintTest();
delay(2000);

//a single pixel
display.drawPixel(display.width()/2, display.height()/2, GREEN);
delay(500);

// line draw test
testlines(YELLOW);
delay(500);

// optimized lines
testfastlines(RED, BLUE);
delay(500);

testdrawrects(GREEN);
delay(1000);

testfillrects(YELLOW, MAGENTA);
delay(1000);

display.fillScreen(BLACK);
testfillcircles(10, BLUE);
testdrawcircles(10, WHITE);
delay(1000);

testroundrects();
delay(500);

testtriangles();
delay(500);

Serial.println("done");
delay(1000);
}

void loop() {
}

void testlines(uint16_t color) {
display.fillScreen(BLACK);
for (int16_t x=0; x < display.width()-1; x+=6) {
display.drawLine(0, 0, x, display.height()-1, color);
}
for (int16_t y=0; y < display.height()-1; y+=6) {
display.drawLine(0, 0, display.width()-1, y, color);
}

display.fillScreen(BLACK);
for (int16_t x=0; x < display.width()-1; x+=6) {
display.drawLine(display.width()-1, 0, x, display.height()-1, color);
}
for (int16_t y=0; y < display.height()-1; y+=6) {
display.drawLine(display.width()-1, 0, 0, y, color);
}

display.fillScreen(BLACK);
for (int16_t x=0; x < display.width()-1; x+=6) {
display.drawLine(0, display.height()-1, x, 0, color);
}
for (int16_t y=0; y < display.height()-1; y+=6) {
display.drawLine(0, display.height()-1, display.width()-1, y, color);
}

display.fillScreen(BLACK);
for (int16_t x=0; x < display.width()-1; x+=6) {
display.drawLine(display.width()-1, display.height()-1, x, 0, color);
}
for (int16_t y=0; y < display.height()-1; y+=6) {
display.drawLine(display.width()-1, display.height()-1, 0, y, color);
}

}

void testdrawtext(char *text, uint16_t color) {
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0,0);

for (uint8_t i=0; i < 168; i++) {
if (i == '\n') continue;
display.write(i);
if ((i > 0) && (i % 21 == 0))
display.println();
}
}

void testfastlines(uint16_t color1, uint16_t color2) {
display.fillScreen(BLACK);
for (int16_t y=0; y < display.height()-1; y+=5) {
display.drawFastHLine(0, y, display.width()-1, color1);
}
for (int16_t x=0; x < display.width()-1; x+=5) {
display.drawFastVLine(x, 0, display.height()-1, color2);
}
}

void testdrawrects(uint16_t color) {
display.fillScreen(BLACK);
for (int16_t x=0; x < display.height()-1; x+=6) {
display.drawRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color);
}
}

void testfillrects(uint16_t color1, uint16_t color2) {
display.fillScreen(BLACK);
for (int16_t x=display.height()-1; x > 6; x-=6) {
display.fillRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color1);
display.drawRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color2);
}
}

void testfillcircles(uint8_t radius, uint16_t color) {
for (uint8_t x=radius; x < display.width()-1; x+=radius*2) {
for (uint8_t y=radius; y < display.height()-1; y+=radius*2) {
display.fillCircle(x, y, radius, color);
}
}
}

void testdrawcircles(uint8_t radius, uint16_t color) {
for (int16_t x=0; x < display.width()-1+radius; x+=radius*2) {
for (int16_t y=0; y < display.height()-1+radius; y+=radius*2) {
display.drawCircle(x, y, radius, color);
}
}
}

void testtriangles() {
display.fillScreen(BLACK);
int color = 0xF800;
int t;
int w = display.width()/2;
int x = display.height();
int y = 0;
int z = display.width();
for(t = 0 ; t <= 15; t+=1) {
display.drawTriangle(w, y, y, x, z, x, color);
x-=4;
y+=4;
z-=4;
color+=100;
}
}

void testroundrects() {
display.fillScreen(BLACK);
int color = 100;
int i;
int t;
for(t = 0 ; t <= 4; t+=1) {
int x = 0;
int y = 0;
int w = display.width();
int h = display.height();
for(i = 0 ; i <= 24; i+=1) {
display.drawRoundRect(x, y, w, h, 5, color);
x+=2;
y+=3;
w-=4;
h-=6;
color+=1100;
}
color+=100;
}
}

void tftPrintTest() {
display.fillScreen(BLACK);
display.setCursor(0, 5);
display.setTextColor(RED);
display.setTextSize(1);
display.println("Hello World!");
display.setTextColor(YELLOW, GREEN);
display.setTextSize(2);
display.print("Hello Wo");
display.setTextColor(BLUE);
display.setTextSize(3);
display.print(1234.567);
delay(1500);
display.setCursor(0, 5);
display.fillScreen(BLACK);
display.setTextColor(WHITE);
display.setTextSize(0);
display.println("Hello World!");
display.setTextSize(1);
display.setTextColor(GREEN);
display.print(p, 5);
display.println(" Want pi?");
display.print(8675309, HEX); // print 8,675,309 out in HEX!
display.print(" Print HEX");
display.setTextColor(WHITE);
display.println("Sketch has been");
display.println("running for: ");
display.setTextColor(MAGENTA);
display.print(millis() / 1000);
display.setTextColor(WHITE);
display.print(" seconds.");
}

void mediabuttons() {
// play
display.fillScreen(BLACK);
display.fillRoundRect(25, 10, 78, 60, 8, WHITE);
display.fillTriangle(42, 20, 42, 60, 90, 40, RED);
delay(500);
// pause
display.fillRoundRect(25, 90, 78, 60, 8, WHITE);
display.fillRoundRect(39, 98, 20, 45, 5, GREEN);
display.fillRoundRect(69, 98, 20, 45, 5, GREEN);
delay(500);
// play color
display.fillTriangle(42, 20, 42, 60, 90, 40, BLUE);
delay(50);
// pause color
display.fillRoundRect(39, 98, 20, 45, 5, RED);
display.fillRoundRect(69, 98, 20, 45, 5, RED);
// play color
display.fillTriangle(42, 20, 42, 60, 90, 40, GREEN);
}

/**************************************************************************/
/*!
@brief Renders a simple test pattern on the LCD
*/
/**************************************************************************/
void lcdTestPattern(void)
{
uint32_t i,j;
display.goTo(0, 0);

#include "Load_fonts.h"

#if ARDUINO >= 100
#include "Arduino.h"
#include "Print.h"
#else
#include "WProgram.h"
#endif

#define swap(a, b) { int16_t t = a; a = b; b = t; }

class Adafruit_GFX : public Print {

public:

Adafruit_GFX(int16 w, int16 h); // Constructor

// This MUST be defined by the subclass:
virtual void drawPixel(int16 x, int16 y, uint16 color) = 0;

// These MAY be overridden by the subclass to provide device-specific
// optimized code. Otherwise 'generic' versions are used.
virtual void
drawLine(int16 x0, int16 y0, int16 x1, int16 y1, uint16 color),
drawFastVLine(int16 x, int16 y, int16 h, uint16 color),
drawFastHLine(int16 x, int16 y, int16 w, uint16 color),
drawRect(int16 x, int16 y, int16 w, int16 h, uint16 color),
fillRect(int16 x, int16 y, int16 w, int16 h, uint16 color),
fillScreen(uint16 color),
invertDisplay(boolean i);

// These exist only with Adafruit_GFX (no subclass overrides)
void
drawCircle(int16 x0, int16 y0, int16 r, uint16 color),
drawCircleHelper(int16 x0, int16 y0, int16 r, uint8_t cornername,
uint16 color),
fillCircle(int16 x0, int16 y0, int16 r, uint16 color),
fillCircleHelper(int16 x0, int16 y0, int16 r, uint8_t cornername,
int16 delta, uint16 color),
drawTriangle(int16 x0, int16 y0, int16 x1, int16 y1,
int16 x2, int16 y2, uint16 color),
fillTriangle(int16 x0, int16 y0, int16 x1, int16 y1,
int16 x2, int16 y2, uint16 color),
drawRoundRect(int16 x0, int16 y0, int16 w, int16 h,
int16 radius, uint16 color),
fillRoundRect(int16 x0, int16 y0, int16 w, int16 h,
int16 radius, uint16 color),
drawBitmap(int16 x, int16 y, const uint8_t *bitmap,
int16 w, int16 h, uint16 color),
drawChar(int16 x, int16 y, unsigned char c, uint16 color,
uint16 bg, uint8_t size),
setCursor(int16 x, int16 y),
setTextColor(uint16 c),
setTextColor(uint16 c, uint16 bg),
setTextSize(uint8 s),
setTextWrap(boolean w),
setRotation(uint8 r);

int16 drawUnicode(uint16 uniCode, int16 x, int16 y, int16 size);
int16 drawNumber(long long_num,int16 poX, int16 poY, int16 size);
int16 drawChar(char c, int16 x, int16 y, int16 size);
int16 drawString(char *string, int16 poX, int16 poY, int16 size);
int16 drawCentreString(char *string, int16 dX, int16 poY, int16 size);
int16 drawRightString(char *string, int16 dX, int16 poY, int16 size);
int16 drawFloat(float floatNumber,int16 decimal,int16 poX, int16 poY, int16 size);

#if ARDUINO >= 100
virtual size_t write(uint8);
#else
virtual void write(uint8);
#endif

int16
height(void),
width(void);

uint8 getRotation(void);

protected:
const int16
WIDTH, HEIGHT; // This is the 'raw' display w/h - never changes
int16
_width, _height, // Display w/h as modified by current rotation
cursor_x, cursor_y;
uint16
textcolor, textbgcolor;
uint8
textsize,
rotation;
boolean
wrap; // If set, 'wrap' text at right edge of display
};

Adafruit invests time and resources providing this open source code, please
support Adafruit & open-source hardware by purchasing products from Adafruit!

Copyright (c) 2013 Adafruit Industries. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/

#include "Adafruit_GFX_AS.h"

#ifdef LOAD_GLCD
#include "glcdfont.c"
#endif

#ifdef LOAD_FONT2
#include "Font16.h"
#endif

#ifdef LOAD_FONT4
#include "Font32.h"
#endif

#ifdef LOAD_FONT6
#include "Font64.h"
#endif

#ifdef LOAD_FONT7
#include "Font7s.h"
#endif

#ifdef __AVR__
#include <avr/pgmspace.h>
#else
#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
#endif

Adafruit_GFX::Adafruit_GFX(int16_t w, int16_t h):
WIDTH(w), HEIGHT(h)
{
_width = WIDTH;
_height = HEIGHT;
rotation = 0;
cursor_y = cursor_x = 0;
textsize = 1;
textcolor = textbgcolor = 0xFFFF;
wrap = true;
}

// Draw a circle outline
void Adafruit_GFX::drawCircle(int16_t x0, int16_t y0, int16_t r,
uint16_t color) {
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;

drawPixel(x0 , y0+r, color);
drawPixel(x0 , y0-r, color);
drawPixel(x0+r, y0 , color);
drawPixel(x0-r, y0 , color);

while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;

drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 - x, y0 + y, color);
drawPixel(x0 + x, y0 - y, color);
drawPixel(x0 - x, y0 - y, color);
drawPixel(x0 + y, y0 + x, color);
drawPixel(x0 - y, y0 + x, color);
drawPixel(x0 + y, y0 - x, color);
drawPixel(x0 - y, y0 - x, color);
}
}

void Adafruit_GFX::drawCircleHelper( int16_t x0, int16_t y0,
int16_t r, uint8_t cornername, uint16_t color) {
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;

while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
if (cornername & 0x4) {
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 + y, y0 + x, color);
}
if (cornername & 0x2) {
drawPixel(x0 + x, y0 - y, color);
drawPixel(x0 + y, y0 - x, color);
}
if (cornername & 0x8) {
drawPixel(x0 - y, y0 + x, color);
drawPixel(x0 - x, y0 + y, color);
}
if (cornername & 0x1) {
drawPixel(x0 - y, y0 - x, color);
drawPixel(x0 - x, y0 - y, color);
}
}
}

void Adafruit_GFX::fillCircle(int16_t x0, int16_t y0, int16_t r,
uint16_t color) {
drawFastVLine(x0, y0-r, 2*r+1, color);
fillCircleHelper(x0, y0, r, 3, 0, color);
}

// Used to do circles and roundrects
void Adafruit_GFX::fillCircleHelper(int16_t x0, int16_t y0, int16_t r,
uint8_t cornername, int16_t delta, uint16_t color) {

int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;

while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;

if (cornername & 0x1) {
drawFastVLine(x0+x, y0-y, 2*y+1+delta, color);
drawFastVLine(x0+y, y0-x, 2*x+1+delta, color);
}
if (cornername & 0x2) {
drawFastVLine(x0-x, y0-y, 2*y+1+delta, color);
drawFastVLine(x0-y, y0-x, 2*x+1+delta, color);
}
}
}

// Bresenham's algorithm - thx wikpedia
void Adafruit_GFX::drawLine(int16_t x0, int16_t y0,
int16_t x1, int16_t y1,
uint16_t color) {
int16_t steep = abs(y1 - y0) > abs(x1 - x0);
if (steep) {
swap(x0, y0);
swap(x1, y1);
}

if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}

int16_t dx, dy;
dx = x1 - x0;
dy = abs(y1 - y0);

int16_t err = dx / 2;
int16_t ystep;

if (y0 < y1) {
ystep = 1;
} else {
ystep = -1;
}

for (; x0<=x1; x0++) {
if (steep) {
drawPixel(y0, x0, color);
} else {
drawPixel(x0, y0, color);
}
err -= dy;
if (err < 0) {
y0 += ystep;
err += dx;
}
}
}

// Draw a rectangle
void Adafruit_GFX::drawRect(int16_t x, int16_t y,
int16_t w, int16_t h,
uint16_t color) {
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}

void Adafruit_GFX::drawFastVLine(int16_t x, int16_t y,
int16_t h, uint16_t color) {
// Update in subclasses if desired!
drawLine(x, y, x, y+h-1, color);
}

void Adafruit_GFX::drawFastHLine(int16_t x, int16_t y,
int16_t w, uint16_t color) {
// Update in subclasses if desired!
drawLine(x, y, x+w-1, y, color);
}

void Adafruit_GFX::fillRect(int16_t x, int16_t y, int16_t w, int16_t h,
uint16_t color) {
// Update in subclasses if desired!
for (int16_t i=x; i<x+w; i++) {
drawFastVLine(i, y, h, color);
}
}

void Adafruit_GFX::fillScreen(uint16_t color) {
fillRect(0, 0, _width, _height, color);
}

// Draw a rounded rectangle
void Adafruit_GFX::drawRoundRect(int16_t x, int16_t y, int16_t w,
int16_t h, int16_t r, uint16_t color) {
// smarter version
drawFastHLine(x+r , y , w-2*r, color); // Top
drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
drawFastVLine(x , y+r , h-2*r, color); // Left
drawFastVLine(x+w-1, y+r , h-2*r, color); // Right
// draw four corners
drawCircleHelper(x+r , y+r , r, 1, color);
drawCircleHelper(x+w-r-1, y+r , r, 2, color);
drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
drawCircleHelper(x+r , y+h-r-1, r, 8, color);
}

// Fill a rounded rectangle
void Adafruit_GFX::fillRoundRect(int16_t x, int16_t y, int16_t w,
int16_t h, int16_t r, uint16_t color) {
// smarter version
fillRect(x+r, y, w-2*r, h, color);

// draw four corners
fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color);
fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color);
}

// Draw a triangle
void Adafruit_GFX::drawTriangle(int16_t x0, int16_t y0,
int16_t x1, int16_t y1,
int16_t x2, int16_t y2, uint16_t color) {
drawLine(x0, y0, x1, y1, color);
drawLine(x1, y1, x2, y2, color);
drawLine(x2, y2, x0, y0, color);
}

// Fill a triangle
void Adafruit_GFX::fillTriangle ( int16_t x0, int16_t y0,
int16_t x1, int16_t y1,
int16_t x2, int16_t y2, uint16_t color) {

int16_t a, b, y, last;

// Sort coordinates by Y order (y2 >= y1 >= y0)
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}
if (y1 > y2) {
swap(y2, y1); swap(x2, x1);
}
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}

if(y0 == y2) { // Handle awkward all-on-same-line case as its own thing
a = b = x0;
if(x1 < a) a = x1;
else if(x1 > b) b = x1;
if(x2 < a) a = x2;
else if(x2 > b) b = x2;
drawFastHLine(a, y0, b-a+1, color);
return;
}

int16_t
dx01 = x1 - x0,
dy01 = y1 - y0,
dx02 = x2 - x0,
dy02 = y2 - y0,
dx12 = x2 - x1,
dy12 = y2 - y1,
sa = 0,
sb = 0;

// For upper part of triangle, find scanline crossings for segments
// 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
// is included here (and second loop will be skipped, avoiding a /0
// error there), otherwise scanline y1 is skipped here and handled
// in the second loop...which also avoids a /0 error here if y0=y1
// (flat-topped triangle).
if(y1 == y2) last = y1; // Include y1 scanline
else last = y1-1; // Skip it

for(y=y0; y<=last; y++) {
a = x0 + sa / dy01;
b = x0 + sb / dy02;
sa += dx01;
sb += dx02;
/* longhand:
a = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
drawFastHLine(a, y, b-a+1, color);
}

// For lower part of triangle, find scanline crossings for segments
// 0-2 and 1-2. This loop is skipped if y1=y2.
sa = dx12 * (y - y1);
sb = dx02 * (y - y0);
for(; y<=y2; y++) {
a = x1 + sa / dy12;
b = x0 + sb / dy02;
sa += dx12;
sb += dx02;
/* longhand:
a = x1 + (x2 - x1) * (y - y1) / (y2 - y1);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
drawFastHLine(a, y, b-a+1, color);
}
}

void Adafruit_GFX::drawBitmap(int16_t x, int16_t y,
const uint8_t *bitmap, int16_t w, int16_t h,
uint16_t color) {

int16_t i, j, byteWidth = (w + 7) / 8;

for(j=0; j<h; j++) {
for(i=0; i<w; i++ ) {
if(pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7))) {
drawPixel(x+i, y+j, color);
}
}
}
}

//#if ARDUINO >= 100
size_t Adafruit_GFX::write(uint8_t c) {
//#else
//void Adafruit_GFX::write(uint8_t c) {
//#endif
if (c == '\n') {
cursor_y += textsize*8;
cursor_x = 0;
} else if (c == '\r') {
// skip em
} else {
drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize);
cursor_x += textsize*6;
if (wrap && (cursor_x > (_width - textsize*6))) {
cursor_y += textsize*8;
cursor_x = 0;
}
}
//#if ARDUINO >= 100
return 1;
//#endif
}

// Draw a character
void Adafruit_GFX::drawChar(int16_t x, int16_t y, unsigned char c,
uint16_t color, uint16_t bg, uint8_t size) {
#ifdef LOAD_GLCD
if((x >= _width) || // Clip right
(y >= _height) || // Clip bottom
((x + 6 * size - 1) < 0) || // Clip left
((y + 8 * size - 1) < 0)) // Clip top
return;

for (int8_t i=0; i<6; i++ ) {
uint8_t line;
if (i == 5)
line = 0x0;
else
line = pgm_read_byte(font+(c*5)+i);
for (int8_t j = 0; j<8; j++) {
if (line & 0x1) {
if (size == 1) // default size
drawPixel(x+i, y+j, color);
else { // big size
fillRect(x+(i*size), y+(j*size), size, size, color);
}
} else if (bg != color) {
if (size == 1) // default size
drawPixel(x+i, y+j, bg);
else { // big size
fillRect(x+i*size, y+j*size, size, size, bg);
}
}
line >>= 1;
}
}
#endif
}

void Adafruit_GFX::setCursor(int16_t x, int16_t y) {
cursor_x = x;
cursor_y = y;
}

void Adafruit_GFX::setTextSize(uint8_t s) {
textsize = (s > 0) ? s : 1;
}

void Adafruit_GFX::setTextColor(uint16_t c) {
// For 'transparent' background, we'll set the bg
// to the same as fg instead of using a flag
textcolor = textbgcolor = c;
}

void Adafruit_GFX::setTextColor(uint16_t c, uint16_t b) {
textcolor = c;
textbgcolor = b;
}

void Adafruit_GFX::setTextWrap(boolean w) {
wrap = w;
}

uint8_t Adafruit_GFX::getRotation(void) {
return rotation;
}

void Adafruit_GFX::setRotation(uint8_t x) {
rotation = (x & 3);
switch(rotation) {
case 0:
case 2:
_width = WIDTH;
_height = HEIGHT;
break;
case 1:
case 3:
_width = HEIGHT;
_height = WIDTH;
break;
}
}

// Return the size of the display (per current rotation)
int16_t Adafruit_GFX::width(void) {
return _width;
}

int16_t Adafruit_GFX::height(void) {
return _height;
}

void Adafruit_GFX::invertDisplay(boolean i) {
// Do nothing, must be subclassed if supported
}

/***************************************************************************************
** Function name: drawUnicode
** Descriptions: draw a unicode
***************************************************************************************/
int16_t Adafruit_GFX::drawUnicode(uint16_t uniCode, int16_t x, int16_t y, int16_t size)
{

if (size) uniCode -= 32;

uint16_t width = 0;
uint16_t height = 0;
uint32_t flash_address = 0;
int16_t gap = 0;

// if (size == 1) {
// flash_address = pgm_read_dword(&chrtbl_f8[uniCode]);
// width = pgm_read_byte(widtbl_f8+uniCode);
// height = chr_hgt_f8;
// gap = 1;
// }
#ifdef LOAD_FONT2
if (size == 2) {
flash_address = pgm_read_dword(&chrtbl_f16[uniCode]);
width = pgm_read_byte(widtbl_f16+uniCode);
height = chr_hgt_f16;
gap = 1;
}
#endif
// if (size == 3) {
// flash_address = pgm_read_dword(&chrtbl_f24[uniCode]);
// width = pgm_read_byte(widtbl_f24+uniCode);
// height = chr_hgt_f24;
// gap = 0;
// }
#ifdef LOAD_FONT4
if (size == 4) {
flash_address = pgm_read_dword(&chrtbl_f32[uniCode]);
width = pgm_read_byte(widtbl_f32+uniCode);
height = chr_hgt_f32;
gap = -3;
}
#endif
// if (size == 5) {
// flash_address = pgm_read_dword(&chrtbl_f48[uniCode]);
// width = pgm_read_byte(widtbl_f48+uniCode);
// height = chr_hgt_f48;
// gap = -3;
// }
#ifdef LOAD_FONT6
if (size == 6) {
flash_address = pgm_read_dword(&chrtbl_f64[uniCode]);
width = pgm_read_byte(widtbl_f64+uniCode);
height = chr_hgt_f64;
gap = -3;
}
#endif
#ifdef LOAD_FONT7
if (size == 7) {
flash_address = pgm_read_dword(&chrtbl_f7s[uniCode]);
width = pgm_read_byte(widtbl_f7s+uniCode);
height = chr_hgt_f7s;
gap = 2;
}
#endif

int16_t w = (width+7)/8;
int16_t pX = 0;
int16_t pY = y;
int16_t color = 0;
byte line = 0;

//fillRect(x,pY,width+gap,height,textbgcolor);

for(int16_t i=0; i<height; i++)
{
if (textcolor != textbgcolor) {
if (textsize == 1) drawFastHLine(x, pY, width+gap, textbgcolor);
else fillRect(x, pY, (width+gap)*textsize, textsize, textbgcolor);
}
for (int16_t k = 0;k < w; k++)
{
line = pgm_read_byte(flash_address+w*i+k);
if(line) {
if (textsize==1){
pX = x + k*8;
if(line & 0x80) drawPixel(pX, pY, textcolor);
if(line & 0x40) drawPixel(pX+1, pY, textcolor);
if(line & 0x20) drawPixel(pX+2, pY, textcolor);
if(line & 0x10) drawPixel(pX+3, pY, textcolor);
if(line & 0x8) drawPixel(pX+4, pY, textcolor);
if(line & 0x4) drawPixel(pX+5, pY, textcolor);
if(line & 0x2) drawPixel(pX+6, pY, textcolor);
if(line & 0x1) drawPixel(pX+7, pY, textcolor);
}
else {
pX = x + k*8*textsize;
if(line & 0x80) fillRect(pX, pY, textsize, textsize, textcolor);
if(line & 0x40) fillRect(pX+textsize, pY, textsize, textsize, textcolor);
if(line & 0x20) fillRect(pX+2*textsize, pY, textsize, textsize, textcolor);
if(line & 0x10) fillRect(pX+3*textsize, pY, textsize, textsize, textcolor);
if(line & 0x8) fillRect(pX+4*textsize, pY, textsize, textsize, textcolor);
if(line & 0x4) fillRect(pX+5*textsize, pY, textsize, textsize, textcolor);
if(line & 0x2) fillRect(pX+6*textsize, pY, textsize, textsize, textcolor);
if(line & 0x1) fillRect(pX+7*textsize, pY, textsize, textsize, textcolor);
}
}
}
pY+=textsize;
}
return (width+gap)*textsize; // x +
}

/***************************************************************************************
** Function name: drawNumber unsigned with size
** Descriptions: drawNumber
***************************************************************************************/
int16_t Adafruit_GFX::drawNumber(long long_num,int16_t poX, int16_t poY, int16_t size)
{
char tmp[10];
if (long_num < 0) sprintf(tmp, "%li", long_num);
else sprintf(tmp, "%lu", long_num);
return drawString(tmp, poX, poY, size);
}

/***************************************************************************************
** Function name: drawChar
** Descriptions: draw char
***************************************************************************************/
int16_t Adafruit_GFX::drawChar(char c, int16_t x, int16_t y, int16_t size)
{
return drawUnicode(c, x, y, size);
}

/***************************************************************************************
** Function name: drawString
** Descriptions: draw string
***************************************************************************************/
int16_t Adafruit_GFX::drawString(char *string, int16_t poX, int16_t poY, int16_t size)
{
int16_t sumX = 0;

while(*string)
{
int16_t xPlus = drawChar(*string, poX, poY, size);
sumX += xPlus;
*string++;
poX += xPlus; /* Move cursor right */
}
return sumX;
}

/***************************************************************************************
** Function name: drawCentreString
** Descriptions: draw string across centre
***************************************************************************************/
int16_t Adafruit_GFX::drawCentreString(char *string, int16_t dX, int16_t poY, int16_t size)
{
int16_t sumX = 0;
int16_t len = 0;
char *pointer = string;
char ascii;

while(*pointer)
{
ascii = *pointer;
//if (size==0)len += 1+pgm_read_byte(widtbl_log+ascii);
//if (size==1)len += 1+pgm_read_byte(widtbl_f8+ascii-32);
#ifdef LOAD_FONT2
if (size==2)len += 1+pgm_read_byte(widtbl_f16+ascii-32);
#endif
//if (size==3)len += 1+pgm_read_byte(widtbl_f48+ascii-32)/2;
#ifdef LOAD_FONT4
if (size==4)len += pgm_read_byte(widtbl_f32+ascii-32)-3;
#endif
//if (size==5) len += pgm_read_byte(widtbl_f48+ascii-32)-3;
#ifdef LOAD_FONT6
if (size==6) len += pgm_read_byte(widtbl_f64+ascii-32)-3;
#endif
#ifdef LOAD_FONT7
if (size==7) len += pgm_read_byte(widtbl_f7s+ascii-32)+2;
#endif
*pointer++;
}
len = len*textsize;
int16_t poX = dX - len/2;

if (poX < 0) poX = 0;

while(*string)
{

int16_t xPlus = drawChar(*string, poX, poY, size);
sumX += xPlus;
*string++;
poX += xPlus; /* Move cursor right */
}

return sumX;
}

/***************************************************************************************
** Function name: drawRightString
** Descriptions: draw string right justified
***************************************************************************************/
int16_t Adafruit_GFX::drawRightString(char *string, int16_t dX, int16_t poY, int16_t size)
{
int16_t sumX = 0;
int16_t len = 0;
char *pointer = string;
char ascii;

while(*pointer)
{
ascii = *pointer;
//if (size==0)len += 1+pgm_read_byte(widtbl_log+ascii);
//if (size==1)len += 1+pgm_read_byte(widtbl_f8+ascii-32);
#ifdef LOAD_FONT2
if (size==2)len += 1+pgm_read_byte(widtbl_f16+ascii-32);
#endif
//if (size==3)len += 1+pgm_read_byte(widtbl_f48+ascii-32)/2;
#ifdef LOAD_FONT4
//if (size==4)len += pgm_read_byte(widtbl_f32+ascii-32)-3;
if (size==4)len += pgm_read_byte(widtbl_f32+ascii-32);
#endif
//if (size==5) len += pgm_read_byte(widtbl_f48+ascii-32)-3;
#ifdef LOAD_FONT6
if (size==6) len += pgm_read_byte(widtbl_f64+ascii-32)-3;
#endif
#ifdef LOAD_FONT7
if (size==7) len += pgm_read_byte(widtbl_f7s+ascii-32)+2;
#endif
*pointer++;
}

len = len*textsize;
int16_t poX = dX - len;

if (poX < 0) poX = 0;

while(*string)
{

int16_t xPlus = drawChar(*string, poX, poY, size);
sumX += xPlus;
*string++;
poX += xPlus; /* Move cursor right */
}

return sumX;
}

/***************************************************************************************
** Function name: drawFloat
** Descriptions: drawFloat
***************************************************************************************/
int16_t Adafruit_GFX::drawFloat(float floatNumber, int16_t decimal, int16_t poX, int16_t poY, int16_t size)
{
unsigned long temp=0;
float decy=0.0;
float rounding = 0.5;

float eep = 0.000001;

int16_t sumX = 0;
int16_t xPlus = 0;

if(floatNumber-0.0 < eep) // floatNumber < 0
{
xPlus = drawChar('-',poX, poY, size);
floatNumber = -floatNumber;

poX += xPlus;
sumX += xPlus;
}

for (unsigned char i=0; i<decimal; ++i)
{
rounding /= 10.0;
}

floatNumber += rounding;

temp = (long)floatNumber;

xPlus = drawNumber(temp,poX, poY, size);

poX += xPlus;
sumX += xPlus;

if(decimal>0)
{
xPlus = drawChar('.',poX, poY, size);
poX += xPlus; /* Move cursor right */
sumX += xPlus;
}
else
{
return sumX;
}

decy = floatNumber - temp;
for(unsigned char i=0; i<decimal; i++)
{
decy *= 10; /* for the next decimal */
temp = decy; /* get the decimal */
xPlus = drawNumber(temp,poX, poY, size);

// Allow boards to provide a PLL multiplier. This is useful for
// e.g. STM32F100 value line MCUs, which use slower multipliers.
// (We're leaving the default to RCC_PLLMUL_9 for now, since that
// works for F103 performance line MCUs, which is all that LeafLabs
// currently officially supports).
#ifndef BOARD_RCC_PLLMUL
#if F_CPU==72000000
#define BOARD_RCC_PLLMUL RCC_PLLMUL_9
#elif F_CPU==48000000
#define BOARD_RCC_PLLMUL RCC_PLLMUL_6
#endif
#endif

namespace wirish {
namespace priv {

static stm32f1_rcc_pll_data pll_data = {BOARD_RCC_PLLMUL};
__weak rcc_pll_cfg w_board_pll_cfg = {RCC_PLLSRC_HSE, &pll_data};
__weak adc_prescaler w_adc_pre = ADC_PRE_PCLK2_DIV_6;
__weak adc_smp_rate w_adc_smp = ADC_SMPR_55_5;

__weak void board_reset_pll(void) {
// TODO
}

__weak void board_setup_clock_prescalers(void) {
rcc_set_prescaler(RCC_PRESCALER_AHB, RCC_AHB_SYSCLK_DIV_1);
rcc_set_prescaler(RCC_PRESCALER_APB1, RCC_APB1_HCLK_DIV_2);
rcc_set_prescaler(RCC_PRESCALER_APB2, RCC_APB2_HCLK_DIV_1);
rcc_clk_disable(RCC_USB);
#if F_CPU == 72000000
rcc_set_prescaler(RCC_PRESCALER_USB, RCC_USB_SYSCLK_DIV_1_5);
#elif F_CPU == 48000000
rcc_set_prescaler(RCC_PRESCALER_USB, RCC_USB_SYSCLK_DIV_1);
#endif
}

__weak void board_setup_gpio(void) {
gpio_init_all();
}

__weak void board_setup_usb(void) {
#ifdef SERIAL_USB

#ifdef GENERIC_BOOTLOADER
//Reset the USB interface on generic boards - developed by Victor PV
gpio_set_mode(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit, GPIO_OUTPUT_PP);
gpio_write_bit(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit,0);

for(volatile unsigned int i=0;i<512;i++);// Only small delay seems to be needed, and USB pins will get configured in Serial.begin
gpio_set_mode(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit, GPIO_INPUT_FLOATING);
#endif
Serial.begin();// Roger Clark. Changed SerialUSB to Serial for Arduino sketch compatibility
#endif
}

__weak void series_init(void) {
// Initialize AFIO here, too, so peripheral remaps and external
// interrupts work out of the box.
afio_init();
}