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MicroView.cpp
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MicroView.cpp
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/*
MicroView Arduino Library
Copyright (C) 2014 GeekAmmo
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/pgmspace.h>
//#include <SPI.h>
#include "MicroView.h"
// This fixed ugly GCC warning "only initialized variables can be placed into program memory area"
#undef PROGMEM
#define PROGMEM __attribute__((section(".progmem.data")))
// Add header of the fonts here. Remove as many as possible to conserve FLASH memory.
#include "font5x7.h"
#include "font8x16.h"
//#include "fontlargenumber.h"
//#include "7segment.h"
//#include "space01.h"
//#include "space02.h"
//#include "space03.h"
// PM 20140921
#include "Arrows.h"
// Change the total fonts included
// PM 20140921
//#define TOTALFONTS 7
#define TOTALFONTS 3
#define recvLEN 100
char serInStr[recvLEN]; // TODO - need to fix a value so that this will not take up too much memory.
uint8_t serCmd[recvLEN];
// Add the font name as declared in the header file. Remove as many as possible to get conserve FLASH memory.
const unsigned char *MicroView::fontsPointer[]={
// PM 20140921
font5x7
,font8x16
//,sevensegment
//,fontlargenumber
//,space01
//,space02
//,space03
,Arrows
};
// TODO - Need to be able to let user add custom fonts from outside of the library
// TODO - getTotalFonts(), addFont() return font number, removeFont()
/** \brief MicroView screen buffer.
Page buffer 64 x 48 divided by 8 = 384 bytes
Page buffer is required because in SPI mode, the host cannot read the SSD1306's GDRAM of the controller. This page buffer serves as a scratch RAM for graphical functions. All drawing function will first be drawn on this page buffer, only upon calling display() function will transfer the page buffer to the actual LCD controller's memory.
*/
static uint8_t screenmemory [] = {
// LCD Memory organised in 64 horizontal pixel and 6 rows of byte
// B B .............B -----
// y y .............y |
// t t .............t |
// e e .............e |
// 0 1 .............63 |
// |
// D0 D0.............D0 | ROW 0
// D1 D1.............D1 |
// D2 D2.............D2 |
// D3 D3.............D3 |
// D4 D4.............D4 |
// D5 D5.............D5 |
// D6 D6.............D6 |
// D7 D7.............D7 ----
//SparkFun Electronics LOGO
// ROW0, BYTE0 to BYTE63
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xF8, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0x0F, 0x07, 0x07, 0x06, 0x06, 0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ROW1, BYTE64 to BYTE127
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x81, 0x07, 0x0F, 0x3F, 0x3F, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFC, 0xFC, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0xFC, 0xF8, 0xE0,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ROW2, BYTE128 to BYTE191
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC,
0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF1, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xF0, 0xFD, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ROW3, BYTE192 to BYTE255
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x1F, 0x07, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ROW4, BYTE256 to BYTE319
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x1F, 0x1F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x07, 0x07, 0x07, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ROW5, BYTE320 to BYTE383
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x7F, 0x3F, 0x1F, 0x0F, 0x07, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/** \brief Initialisation of MicroView Library.
Setup IO pins for SPI port then send initialisation commands to the SSD1306 controller inside the OLED.
*/
void MicroView::begin() {
// default 5x7 font
setFontType(0);
setColor(WHITE);
setDrawMode(NORM);
setCursor(0,0);
RESETLOW;
// Enable 3.3V power to the display
pinMode(OLEDPWR, OUTPUT);
digitalWrite(OLEDPWR, HIGH);
// Give some time for power to stabilise
delay(10);
RESETHIGH;
delay(5);
RESETLOW;
// Setup SPI frequency
MVSPI.setClockDivider(SPI_CLOCK_DIV2);
// Initialise SPI
MVSPI.begin();
delay(5);
// bring out of reset
RESETHIGH;
delay(10);
// Init sequence for 64x48 OLED module
// command(DISPLAYOFF); // 0xAE
// command(SETDISPLAYCLOCKDIV, 0x80); // 0xD5 / the suggested ratio 0x80
command(SETMULTIPLEX, 0x2F); // 0xA8
// command(SETDISPLAYOFFSET, 0x0); // 0xD3 / no offset
// command(SETSTARTLINE | 0x0); // 0x40 / line #0
command(CHARGEPUMP, 0x14); // 0x8D / enable charge pump
// command(NORMALDISPLAY); // 0xA6
// command(DISPLAYALLONRESUME); // 0xA4
command(SEGREMAP | 0x1);
command(COMSCANDEC);
// command(SETCOMPINS, 0x12); // 0xDA
command(SETCONTRAST, 0x8F); // 0x81
command(SETPRECHARGE, 0xF1); // 0xD9
command(SETVCOMDESELECT, 0x40); // 0xDB
command(DISPLAYON); //--turn on oled panel
clear(ALL); // Erase hardware memory inside the OLED controller to avoid random data in memory.
// Serial.begin(115200); // removed the Serial.begin() so that user can decide their own baud rate.
}
/** \brief Power off the OLED display.
Reset display control signals and
prepare the SSD1306 controller for power off,
then power off the 3.3V regulator.
*/
void MicroView::end() {
DCLOW; // Just in case
command(DISPLAYOFF);
command(CHARGEPUMP, 0x10); // Disable the charge pump
delay(150); // Wait for charge pump off
RESETLOW;
SSLOW;
MVSPI.end(); // Disable SPI mode
digitalWrite(OLEDPWR, LOW); // Power off the 3.3V regulator
}
/** \brief Send 1 command byte.
Send 1 command byte via SPI to SSD1306 controller.
*/
void MicroView::command(uint8_t c) {
MVSPI.packetBegin();
MVSPI.transfer(c);
MVSPI.packetEnd();
}
/** \brief Send 2 command bytes.
Send 2 command bytes via SPI to SSD1306 controller.
*/
void MicroView::command(uint8_t c1, uint8_t c2) {
MVSPI.packetBegin();
MVSPI.transfer(c1);
MVSPI.wait();
MVSPI.transfer(c2);
MVSPI.packetEnd();
}
/** \brief Send 3 command bytes.
Send 3 command bytes via SPI to SSD1306 controller.
*/
void MicroView::command(uint8_t c1, uint8_t c2, uint8_t c3) {
MVSPI.packetBegin();
MVSPI.transfer(c1);
MVSPI.wait();
MVSPI.transfer(c2);
MVSPI.wait();
MVSPI.transfer(c3);
MVSPI.packetEnd();
}
/** \brief SPI data.
Send 1 data byte via SPI to SSD1306 controller.
*/
void MicroView::data(uint8_t c) {
MVSPI.packetBegin();
DCHIGH;
MVSPI.transfer(c);
MVSPI.packetEnd();
}
/** \brief Set SSD1306 page address.
Send page address command and address to the SSD1306 OLED controller.
*/
void MicroView::setPageAddress(uint8_t add) {
command(SETPAGE|add);
return;
}
/** \brief Set SSD1306 column address.
Send column address command and address to the SSD1306 OLED controller.
*/
void MicroView::setColumnAddress(uint8_t add) {
command((SETHIGHCOLUMN|(add>>4))+0x02, SETLOWCOLUMN|(0x0f&add));
return;
}
/** \brief Clear screen buffer or SSD1306's memory.
To clear GDRAM inside the LCD controller, pass in the variable mode = ALL and to clear screen page buffer pass in the variable mode = PAGE.
*/
void MicroView::clear(uint8_t mode) {
if (mode==ALL) {
command(SETADDRESSMODE, 0); // Set horizontal addressing mode
command(SETCOLUMNBOUNDS, 0, LCDTOTALWIDTH - 1); // Set width
command(SETPAGEBOUNDS, 0, LCDTOTALPAGES - 1); // Set height
MVSPI.packetBegin();
DCHIGH;
MVSPI.transfer(0);
for (int i = 1; i < LCDTOTALWIDTH * LCDTOTALPAGES; i++) {
MVSPI.wait();
MVSPI.transfer(0);
}
MVSPI.packetEnd();
command(SETADDRESSMODE, 2); // Return display to page addressing mode
}
else
{
memset(screenmemory, 0, LCDWIDTH * LCDPAGES);
//display();
}
}
/** \brief Clear or replace screen buffer or SSD1306's memory with a character.
To clear GDRAM inside the LCD controller, pass in the variable mode = ALL with c character and to clear screen page buffer, pass in the variable mode = PAGE with c character.
*/
void MicroView::clear(uint8_t mode, uint8_t c) {
if (mode==ALL) {
command(SETADDRESSMODE, 0); // Set horizontal addressing mode
command(SETCOLUMNBOUNDS, 0, LCDTOTALWIDTH - 1); // Set width
command(SETPAGEBOUNDS, 0, LCDTOTALPAGES - 1); // Set height
MVSPI.packetBegin();
DCHIGH;
MVSPI.transfer(c);
for (int i = 1; i < LCDTOTALWIDTH * LCDTOTALPAGES; i++) {
MVSPI.wait();
MVSPI.transfer(c);
}
MVSPI.packetEnd();
command(SETADDRESSMODE, 2); // Return display to page addressing mode
}
else
{
memset(screenmemory, c, LCDWIDTH * LCDPAGES);
display();
}
}
/** \brief Invert display.
The WHITE color of the display will turn to BLACK and the BLACK will turn to WHITE.
*/
void MicroView::invert(boolean inv) {
if (inv)
command(INVERTDISPLAY);
else
command(NORMALDISPLAY);
}
/** \brief Set contrast.
OLED contrast value from 0 to 255. Note: Contrast level is not very obvious.
*/
void MicroView::contrast(uint8_t contrast) {
command(SETCONTRAST, contrast); // 0x81
}
/** \brief Transfer display memory.
Bulk move the screen buffer to the SSD1306 controller's memory so that images/graphics drawn on the screen buffer will be displayed on the OLED.
*/
void MicroView::display(void) {
command(SETADDRESSMODE, 0); // Set horizontal addressing mode
command(SETCOLUMNBOUNDS,
LCDCOLUMNOFFSET,
LCDCOLUMNOFFSET + LCDWIDTH - 1); // Set width
command(SETPAGEBOUNDS, 0, LCDPAGES - 1); // Set height
MVSPI.packetBegin();
DCHIGH;
MVSPI.transfer(screenmemory[0]);
for (int i = 1; i < LCDWIDTH * LCDPAGES; i++) {
MVSPI.wait();
MVSPI.transfer(screenmemory[i]);
}
MVSPI.packetEnd();
command(SETADDRESSMODE, 2); // Restore to page addressing mode
}
//#if ARDUINO >= 100
/** \brief Override Arduino's Print.
Arduino's print overridden so that we can use uView.print().
*/
size_t MicroView::write(uint8_t c) {
//#else
// void MicroView::write(uint8_t c) {
//#endif
if (c == '\n') {
cursorY += fontHeight;
cursorX = 0;
} else if (c == '\r') {
// skip
} else {
drawChar(cursorX, cursorY, c, foreColor, drawMode);
cursorX += fontWidth+1;
if ((cursorX > (LCDWIDTH - fontWidth))) {
cursorY += fontHeight;
cursorX = 0;
}
}
//#if ARDUINO >= 100
return 1;
//#endif
}
/** \brief Set cursor position.
MicroView's cursor position to x,y.
*/
void MicroView::setCursor(uint8_t x, uint8_t y) {
cursorX=x;
cursorY=y;
}
/** \brief Draw pixel.
Draw pixel using the current fore color and current draw mode in the screen buffer's x,y position.
*/
void MicroView::pixel(uint8_t x, uint8_t y) {
pixel(x,y,foreColor,drawMode);
}
/** \brief Draw pixel with color and mode.
Draw color pixel in the screen buffer's x,y position with NORM or XOR draw mode.
*/
void MicroView::pixel(uint8_t x, uint8_t y, uint8_t color, uint8_t mode) {
if ((x<0) || (x>=LCDWIDTH) || (y<0) || (y>=LCDHEIGHT))
return;
if (mode==XOR) {
if (color==WHITE)
screenmemory[x+ (y/8)*LCDWIDTH] ^= _BV((y%8));
}
else {
if (color==WHITE)
screenmemory[x+ (y/8)*LCDWIDTH] |= _BV((y%8));
else
screenmemory[x+ (y/8)*LCDWIDTH] &= ~_BV((y%8));
}
//display();
}
/** \brief Draw line.
Draw line using current fore color and current draw mode from x0,y0 to x1,y1 of the screen buffer.
*/
void MicroView::line(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {
line(x0,y0,x1,y1,foreColor,drawMode);
}
/** \brief Draw line with color and mode.
Draw line using color and mode from x0,y0 to x1,y1 of the screen buffer.
*/
void MicroView::line(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color, uint8_t mode) {
uint8_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);
}
uint8_t dx, dy;
dx = x1 - x0;
dy = abs(y1 - y0);
int8_t err = dx / 2;
int8_t ystep;
if (y0 < y1) {
ystep = 1;
} else {
ystep = -1;}
for (; x0<x1; x0++) {
if (steep) {
pixel(y0, x0, color, mode);
} else {
pixel(x0, y0, color, mode);
}
err -= dy;
if (err < 0) {
y0 += ystep;
err += dx;
}
}
}
/** \brief Draw horizontal line.
Draw horizontal line using current fore color and current draw mode from x,y to x+width,y of the screen buffer.
*/
void MicroView::lineH(uint8_t x, uint8_t y, uint8_t width) {
line(x,y,x+width,y,foreColor,drawMode);
}
/** \brief Draw horizontal line with color and mode.
Draw horizontal line using color and mode from x,y to x+width,y of the screen buffer.
*/
void MicroView::lineH(uint8_t x, uint8_t y, uint8_t width, uint8_t color, uint8_t mode) {
line(x,y,x+width,y,color,mode);
}
/** \brief Draw vertical line.
Draw vertical line using current fore color and current draw mode from x,y to x,y+height of the screen buffer.
*/
void MicroView::lineV(uint8_t x, uint8_t y, uint8_t height) {
line(x,y,x,y+height,foreColor,drawMode);
}
/** \brief Draw vertical line with color and mode.
Draw vertical line using color and mode from x,y to x,y+height of the screen buffer.
*/
void MicroView::lineV(uint8_t x, uint8_t y, uint8_t height, uint8_t color, uint8_t mode) {
line(x,y,x,y+height,color,mode);
}
/** \brief Draw rectangle.
Draw rectangle using current fore color and current draw mode from x,y to x+width,y+height of the screen buffer.
*/
void MicroView::rect(uint8_t x, uint8_t y, uint8_t width, uint8_t height) {
rect(x,y,width,height,foreColor,drawMode);
}
/** \brief Draw rectangle with color and mode.
Draw rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
*/
void MicroView::rect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color , uint8_t mode) {
uint8_t tempHeight;
lineH(x,y, width, color, mode);
lineH(x,y+height-1, width, color, mode);
tempHeight=height-2;
// skip drawing vertical lines to avoid overlapping of pixel that will
// affect XOR plot if no pixel in between horizontal lines
if (tempHeight<1) return;
lineV(x,y+1, tempHeight, color, mode);
lineV(x+width-1, y+1, tempHeight, color, mode);
}
/** \brief Draw filled rectangle.
Draw filled rectangle using current fore color and current draw mode from x,y to x+width,y+height of the screen buffer.
*/
void MicroView::rectFill(uint8_t x, uint8_t y, uint8_t width, uint8_t height) {
rectFill(x,y,width,height,foreColor,drawMode);
}
/** \brief Draw filled rectangle with color and mode.
Draw filled rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
*/
void MicroView::rectFill(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color , uint8_t mode) {
// TODO - need to optimise the memory map draw so that this function will not call pixel one by one
for (int i=x; i<x+width;i++) {
lineV(i,y, height, color, mode);
}
}
/** \brief Draw circle.
Draw circle with radius using current fore color and current draw mode at x,y of the screen buffer.
*/
void MicroView::circle(uint8_t x0, uint8_t y0, uint8_t radius) {
circle(x0,y0,radius,foreColor,drawMode);
}
/** \brief Draw circle with color and mode.
Draw circle with radius using color and mode at x,y of the screen buffer.
*/
void MicroView::circle(uint8_t x0, uint8_t y0, uint8_t radius, uint8_t color, uint8_t mode) {
//TODO - find a way to check for no overlapping of pixels so that XOR draw mode will work perfectly
int8_t f = 1 - radius;
int8_t ddF_x = 1;
int8_t ddF_y = -2 * radius;
int8_t x = 0;
int8_t y = radius;
pixel(x0, y0+radius, color, mode);
pixel(x0, y0-radius, color, mode);
pixel(x0+radius, y0, color, mode);
pixel(x0-radius, y0, color, mode);
while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
pixel(x0 + x, y0 + y, color, mode);
pixel(x0 - x, y0 + y, color, mode);
pixel(x0 + x, y0 - y, color, mode);
pixel(x0 - x, y0 - y, color, mode);
pixel(x0 + y, y0 + x, color, mode);
pixel(x0 - y, y0 + x, color, mode);
pixel(x0 + y, y0 - x, color, mode);
pixel(x0 - y, y0 - x, color, mode);
}
}
/** \brief Draw filled circle.
Draw filled circle with radius using current fore color and current draw mode at x,y of the screen buffer.
*/
void MicroView::circleFill(uint8_t x0, uint8_t y0, uint8_t radius) {
circleFill(x0,y0,radius,foreColor,drawMode);
}
/** \brief Draw filled circle with color and mode.
Draw filled circle with radius using color and mode at x,y of the screen buffer.
*/
void MicroView::circleFill(uint8_t x0, uint8_t y0, uint8_t radius, uint8_t color, uint8_t mode) {
// Don't bother trying to draw something totally offscreen
if (x0 - radius >= LCDWIDTH || y0 - radius >= LCDHEIGHT) {
return;
}
// High-level algorithm overview:
// Scan horizontally from left to right, then top to bottom, checking if each pixel
// is within the circle. We use uint16_t's because even the small screen squares beyond 8 bits.
uint16_t radiusSq = radius * radius;
// Optimization: define the start and end onscreen
uint16_t xStart = max(0, x0-radius);
uint16_t xEnd = min(LCDWIDTH-1, x0+radius);
uint16_t yStart = max(0, y0-radius);
uint16_t yEnd = min(LCDHEIGHT-1, y0+radius);
// scan horizontally...
for (uint16_t x = xStart; x <= xEnd; ++x) {
// Optimization: Record where if we have intersected the circle on this vertical
// scan. Once we have intersected, then don't intersect anymore, don't bother
// drawing; we've exited the circle.
bool intersected = false;
// Optimization: relative x squared only changes with the outer loop/the horizontal scan.
int16_t rx2 = (x-x0) * (x-x0);
// Scan vertically...
for (uint16_t y = yStart; y <= yEnd; ++y) {
int16_t ry2 = (y-y0) * (y-y0);
if (rx2 + ry2 <= radiusSq) {
pixel(x, y, color, mode);
intersected = true;
}
else if (intersected) {
// We've left the circle. Move on to the next horizontal scan line.
break;
}
}
}
}
/** \brief Get LCD height.
The height of the LCD return as byte.
*/
uint8_t MicroView::getLCDHeight(void) {
return LCDHEIGHT;
}
/** \brief Get LCD width.
The width of the LCD return as byte.
*/
uint8_t MicroView::getLCDWidth(void) {
return LCDWIDTH;
}
/** \brief Get font width.
The cucrrent font's width return as byte.
*/
uint8_t MicroView::getFontWidth(void) {
return fontWidth;
}
/** \brief Get font height.
The current font's height return as byte.
*/
uint8_t MicroView::getFontHeight(void) {
return fontHeight;
}
/** \brief Get font starting character.
Return the starting ASCII character of the currnet font, not all fonts start with ASCII character 0. Custom fonts can start from any ASCII character.
*/
uint8_t MicroView::getFontStartChar(void) {
return fontStartChar;
}
/** \brief Get font total characters.
Return the total characters of the current font.
*/
uint8_t MicroView::getFontTotalChar(void) {
return fontTotalChar;
}
/** \brief Get total fonts.
Return the total number of fonts loaded into the MicroView's flash memory.
*/
uint8_t MicroView::getTotalFonts(void) {
return TOTALFONTS;
}
/** \brief Get font type.
Return the font type number of the current font.
*/
uint8_t MicroView::getFontType(void) {
return fontType;
}
/** \brief Set font type.
Set the current font type number, ie changing to different fonts base on the type provided.
*/
uint8_t MicroView::setFontType(uint8_t type) {
if ((type>=TOTALFONTS) || (type<0))
return false;
fontType=type;
fontWidth=pgm_read_byte(fontsPointer[fontType]+0);
fontHeight=pgm_read_byte(fontsPointer[fontType]+1);
fontStartChar=pgm_read_byte(fontsPointer[fontType]+2);
fontTotalChar=pgm_read_byte(fontsPointer[fontType]+3);
fontMapWidth=(pgm_read_byte(fontsPointer[fontType]+4)*100)+pgm_read_byte(fontsPointer[fontType]+5); // two bytes values into integer 16
return true;
}
/** \brief Set color.
Set the current draw's color. Only WHITE and BLACK available.
*/
void MicroView::setColor(uint8_t color) {
foreColor=color;
}
/** \brief Set draw mode.
Set current draw mode with NORM or XOR.
*/
void MicroView::setDrawMode(uint8_t mode) {
drawMode=mode;
}
/** \brief Draw character.
Draw character c using current color and current draw mode at x,y.
*/
void MicroView::drawChar(uint8_t x, uint8_t y, uint8_t c) {
drawChar(x,y,c,foreColor,drawMode);
}
/** \brief Draw character with color and mode.
Draw character c using color and draw mode at x,y.
*/
void MicroView::drawChar(uint8_t x, uint8_t y, uint8_t c, uint8_t color, uint8_t mode) {
// TODO - New routine to take font of any height, at the moment limited to font height in multiple of 8 pixels
uint8_t rowsToDraw,row, tempC;
uint8_t i,j,temp;
uint16_t charPerBitmapRow,charColPositionOnBitmap,charRowPositionOnBitmap,charBitmapStartPosition;
if ((c<fontStartChar) || (c>(fontStartChar+fontTotalChar-1))) // no bitmap for the required c
return;
tempC=c-fontStartChar;
// each row (in datasheet is call page) is 8 bits high, 16 bit high character will have 2 rows to be drawn
rowsToDraw=fontHeight/8; // 8 is LCD's page size, see SSD1306 datasheet
if (rowsToDraw<=1) rowsToDraw=1;
// the following draw function can draw anywhere on the screen, but SLOW pixel by pixel draw
if (rowsToDraw==1) {
for (i=0;i<fontWidth+1;i++) {
if (i==fontWidth) // this is done in a weird way because for 5x7 font, there is no margin, this code add a margin after col 5
temp=0;
else
temp=pgm_read_byte(fontsPointer[fontType]+FONTHEADERSIZE+(tempC*fontWidth)+i);
for (j=0;j<8;j++) { // 8 is the LCD's page height (see datasheet for explanation)
if (temp & 0x1) {
pixel(x+i, y+j, color,mode);
}
else {
pixel(x+i, y+j, !color,mode);
}
temp >>=1;
}
}
return;
}
// font height over 8 bit
// take character "0" ASCII 48 as example
charPerBitmapRow=fontMapWidth/fontWidth; // 256/8 =32 char per row
charColPositionOnBitmap=tempC % charPerBitmapRow; // =16
charRowPositionOnBitmap=int(tempC/charPerBitmapRow); // =1
charBitmapStartPosition=(charRowPositionOnBitmap * fontMapWidth * (fontHeight/8)) + (charColPositionOnBitmap * fontWidth) ;
// each row on LCD is 8 bit height (see datasheet for explanation)
for(row=0;row<rowsToDraw;row++) {
for (i=0; i<fontWidth;i++) {
temp=pgm_read_byte(fontsPointer[fontType]+FONTHEADERSIZE+(charBitmapStartPosition+i+(row*fontMapWidth)));
for (j=0;j<8;j++) { // 8 is the LCD's page height (see datasheet for explanation)
if (temp & 0x1) {
pixel(x+i,y+j+(row*8), color, mode);
}
else {
pixel(x+i,y+j+(row*8), !color, mode);
}
temp >>=1;
}
}
}
/*
fast direct memory draw but has a limitation to draw in ROWS
// only 1 row to draw for font with 8 bit height
if (rowsToDraw==1) {
for (i=0; i<fontWidth; i++ ) {
screenmemory[temp + (line*LCDWIDTH) ] = pgm_read_byte(fontsPointer[fontType]+FONTHEADERSIZE+(c*fontWidth)+i);
temp++;
}
return;
}
// font height over 8 bit
// take character "0" ASCII 48 as example
charPerBitmapRow=fontMapWidth/fontWidth; // 256/8 =32 char per row
charColPositionOnBitmap=c % charPerBitmapRow; // =16
charRowPositionOnBitmap=int(c/charPerBitmapRow); // =1
charBitmapStartPosition=(fontMapWidth * (fontHeight/8)) + (charColPositionOnBitmap * fontWidth);
temp=x;
for (row=0; row<rowsToDraw; row++) {
for (i=0; i<fontWidth; i++ ) {
screenmemory[temp + (( (line*(fontHeight/8)) +row)*LCDWIDTH) ] = pgm_read_byte(fontsPointer[fontType]+FONTHEADERSIZE+(charBitmapStartPosition+i+(row*fontMapWidth)));
temp++;
}
temp=x;
}
*/
}
/** \brief Stop scrolling.
Stop the scrolling of graphics on the OLED.
*/
void MicroView::scrollStop(void){
command(DEACTIVATESCROLL);
}
/** \brief Right scrolling.
Set row start to row stop on the OLED to scroll right. Refer to http://learn.microview.io/intro/general-overview-of-microview.html for explanation of the rows.
*/
void MicroView::scrollRight(uint8_t start, uint8_t stop){
if (stop<start) // stop must be larger or equal to start
return;
scrollStop(); // need to disable scrolling before starting to avoid memory corrupt
command(RIGHTHORIZONTALSCROLL, 0);
command(start, 0x7, stop); // scroll speed frames , TODO
command(0x00, 0xFF, ACTIVATESCROLL);
}
/** \brief Left scrolling.
Set row start to row stop on the OLED to scroll left. Refer to http://learn.microview.io/intro/general-overview-of-microview.html for explanation of the rows.
*/
void MicroView::scrollLeft(uint8_t start, uint8_t stop){
if (stop<start) // stop must be larger or equal to start
return;
scrollStop(); // need to disable scrolling before starting to avoid memory corrupt
command(LEFTHORIZONTALSCROLL, 0);
command(start, 0x7, stop); // scroll speed frames , TODO
command(0x00, 0xFF, ACTIVATESCROLL);
}
/** \brief Vertical flip.
Flip the graphics on the OLED vertically.
*/
void MicroView::flipVertical(boolean flip) {
if (flip) {
command(COMSCANINC);
}
else {
command(COMSCANDEC);
}
}
/** \brief Horizontal flip.
Flip the graphics on the OLED horizontally.
*/
void MicroView::flipHorizontal(boolean flip) {
if (flip) {
command(SEGREMAP | 0x0);
}
else {
command(SEGREMAP | 0x1);
}
}
/** \brief Get pointer to screen buffer
Return a pointer to the start of the RAM screen buffer for direct access.
*/
uint8_t *MicroView::getScreenBuffer(void) {
return screenmemory;
}
/** \brief Parse command.
Command stored in serCmd array will be parsed to performed draw functions.
*/
void MicroView::doCmd(uint8_t cmdCount) {
// decode command
switch (serCmd[0]) {
case CMD_CLEAR: {
if (cmdCount==1) {
Serial.print("clear ");
Serial.println(serCmd[1]);
clear(serCmd[1]);
} else if (cmdCount==2) {
Serial.print("clear ");
Serial.print(serCmd[1]);
Serial.print(" ");
Serial.println(serCmd[2]);
clear(serCmd[1], serCmd[2]);
}
break;
}
case CMD_INVERT: {
if (cmdCount==1) {
Serial.print("invert ");
Serial.println(serCmd[1]);
invert(serCmd[1]);
}
break;
}
case CMD_CONTRAST: {
if (cmdCount==1) {
Serial.print("contrast ");
Serial.println(serCmd[1]);
contrast(serCmd[1]);
}
break;
}
case CMD_DISPLAY: {
if (cmdCount==0) {
Serial.println("display");
display();
}
break;
}
case CMD_SETCURSOR: {
if (cmdCount==2) {
Serial.print("setCursor ");
Serial.print(serCmd[1]);
Serial.print(" ");
Serial.println(serCmd[2]);
setCursor(serCmd[1], serCmd[2]);
}
break;
}
case CMD_PIXEL: {
if (cmdCount==2) {
Serial.print("pixel ");
Serial.print(serCmd[1]);
Serial.print(" ");
Serial.println(serCmd[2]);
pixel(serCmd[1],serCmd[2]);
display();
} else if (cmdCount==4) {
Serial.print("pixel ");
Serial.print(serCmd[1]);