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805 lines
28 KiB
805 lines
28 KiB
#include <SPI.h>
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#include <Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_SSD1306.h>
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#define __DEBUG__
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//The following constants are used to configure the behaviour of the interface
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// MAX_OPTIONS defines the maximum number of options a menu can hold
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// MAX_MENUS declares the maximum number of menu screens in the interface
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// MAX_GRAPHS is the maximum number of graphs to create
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// DISP_WIDTH and DISP_HEIGHT are hardware specific (SSD1306)
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// REFRESH: is the time in miliseconds the interface will take in refreshing (this time affects the loop, keep that in mind)
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#define MAX_OPTIONS 10 //Maximum number of options for each menu
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#define MAX_MENUS 3
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#define MAX_GRAPHS 3
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#define MAX_MODIFIERS 3
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#define DISP_WIDTH 128 // OLED display width
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#define DISP_HEIGHT 64 // OLED display height
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#define REFRESH 10 //Refresh time in ms
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#define ADDRESS 0x3C //I2C address of the display
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Adafruit_SSD1306 display(DISP_WIDTH, DISP_HEIGHT, &Wire, -1);
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class Option{
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private:
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int sizex; //Defines the size it will occupy in the x axis (width), this value is gotten from the menu
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int sizey; //Defines the height of the option (this value is gotten from the menu it belongs to)
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String content; //Text of the option
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int pos; //Defines the position it has in the menu
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int textSpacing; //According to the height, defines the space for the text, so that it's vertically centered
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bool fill = false; //In case an option is not selected this should be false
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bool disp = false; //In case an option is not configured, it should be false and, thus hidden
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int destinationType; //Defines what the option leads to (another menu, graph, something else)
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int destinationIndex; //Defines where the option leads to (index of the destination)
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public:
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//Option(){}
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//Method to configure an option, all attributes are assigned, and disp is true, so the option can be displayed
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void configure(String content, int sizex, int sizey, int pos, int destinationType, int destinationIndex){
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this->sizex = sizex;
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this->sizey = sizey;
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this->content = content;
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this->pos = pos;
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this->destinationType = destinationType;
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this->destinationIndex = destinationIndex;
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this->disp = true;
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this->textSpacing = ((sizey - 7)/2) + 7;
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}
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int getDestinationType(){
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int destinationType = this->destinationType;
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return destinationType;
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}
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int getDestinationIndex(){
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int destinationIndex = this->destinationIndex;
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return destinationIndex;
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}
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//This method draws each option
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void drawopt(int page, int pos, int optPPage){
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if(this->disp){ //Checks if the option was configured and, as a result, is displayable
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if(this->pos == pos){ //If the position of the option corresponds to the position passed to the function, then it should be selected
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display.fillRect(0, (this->sizey)*(this->pos) + 1 - (page*optPPage*this->sizey), this->sizex, this->sizey, WHITE);
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display.setTextColor(SSD1306_BLACK);
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display.setCursor(5, (this->sizey)*(this->pos + 1) - (page*optPPage*this->sizey) - this->textSpacing);
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display.print(this->content);
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display.setTextColor(SSD1306_WHITE);
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}
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else{ //If the option is not selected, the rectangle containing it shouldn't be filled
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display.drawRect(0, (this->sizey)*(this->pos) + 1 - (page*optPPage*this->sizey), this->sizex, this->sizey, WHITE);
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display.setCursor(5, (this->sizey)*(this->pos + 1) - (page*optPPage*this->sizey) - this->textSpacing);
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display.print(this->content);
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}
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}
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}
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};
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class Menu{ //ContentType (0)
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private:
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int sizex; //X size for each option in the menu
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int sizey; //Y size of each option in the menu
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int options = 0; //This indicates the number of options created
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int pos = 0; //This indicates the position of the cursor
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int page = 0; //If the menu is too long, this indicates the page that is being displayed
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Option opt[MAX_OPTIONS];
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int optPPage;
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int previousScreen = 0;
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int previousContentType = 0;
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public:
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void configure(int sizex, int sizey){ //This method configures the menu created from Screen
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this->sizex = sizex;
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this->sizey = sizey;
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this->optPPage = DISP_HEIGHT / this->sizey;
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}
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//The following method is used to created an option for the menu
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void createOption(String content, int destinationType, int destinationIndex){
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//The option takes the place in the array defined by the options number variable (options), which is later increased.
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this->opt[this->options].configure(content, this->sizex, this->sizey, this->options++, destinationType, destinationIndex);
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}
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int extractDestinationType(){
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int destinationType = this->opt[this->pos].getDestinationType();
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return destinationType;
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}
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int extractDestinationIndex(){
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int destinationIndex = this->opt[this->pos].getDestinationIndex();
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return destinationIndex;
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}
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//The following method draws the whole menu by drawing every option configured within it
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void drawMenu(){
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display.clearDisplay();
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this->page = pos/this->optPPage; //The current page is obtained by dividing the position by the number of options per page (only integer)
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for(int i = 0; i < options; i++){
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this->opt[i].drawopt(this->page, this->pos, this->optPPage);
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}
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display.display();
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}
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//Methods used by Screen
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int extractPos(){ //Gets the current position of the cursor
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return(this->pos);
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}
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int extractOptNumber(){ //Gets the number of options in the menu
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return(this->options);
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}
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void increasePos(){ //Increases the position of the cursor
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this->pos++;
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}
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void decreasePos(){ //Decreases the position of the cursor
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this->pos--;
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}
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//Both of the following methods store the values of the previous screen passed as parameters by Screen
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void setPreviousScreen(int prev){
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this->previousScreen = prev;
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}
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void setPreviousContentType(int prev){
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this->previousContentType = prev;
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}
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//Both of the following methods retrieve the values of the screen previous to the menu containing these data.
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int getPreviousScreen(){
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int prev = this->previousScreen;
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return prev;
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}
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int getPreviousContentType(){
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int prev = this->previousContentType;
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return prev;
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}
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};
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class Graph{ //ContentType (1)
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private:
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String title;
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char graphType; //'a' Vertical Bar, 'b' Horizontal Bar, 'c' Cartesian Graph
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//Assign whatever value in "configure(..." if a parameter is not required for the specified graphType
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double value; //For: Vertical Bar Horizontal Bar Cartesian
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double xpos; //For: Vertical Bar Horizontal Bar Cartesian
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double ypos; //For: Vertical Bar Horizontal Bar Cartesian
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double height; //For: Vertical Bar Horizontal Bar Cartesian
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double width; //For: Vertical Bar Horizontal Bar Cartesian
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double yminimum; //For: Vertical Bar Cartesian
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double ymaximum; //For: Vertical Bar Cartesian
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double xminimum; //For: Horizontal Bar Cartesian
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double xmaximum; //For: Horizontal Bar Cartesian
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double yStepSize; //For: Vertical Bar Cartesian
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double xStepSize; //For: Horizontal Bar Cartesian
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int digit; //For: Vertical Bar Horizontal Bar Cartesian
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double x;
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double yrange;
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double xrange;
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double ox;
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double oy;
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double count;
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double graphScale;
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bool redraw = true;
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int previousScreen = 0;
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int previousContentType = 0;
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public:
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//This method configures the graph created, defines its parameters according the type of graph selected.
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void configure(String title, char graphType, double xpos, double ypos, double width, double height,
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double yminimum, double ymaximum, double xminimum, double xmaximum, double yStepSize, double xStepSize, int digit){
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this->title = title;
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this->graphType = graphType;
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this->yminimum = yminimum;
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this->ymaximum = ymaximum;
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this->xminimum = xminimum;
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this->count = xminimum;
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this->xmaximum = xmaximum;
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this->height = height;
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this->width = width;
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this->yStepSize = yStepSize;
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this->xStepSize = xStepSize;
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this->digit = digit;
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this->xpos = xpos;
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this->ypos = ypos;
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switch(graphType){
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case 'a':
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this->yrange = ymaximum - yminimum;
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this->graphScale = (yStepSize) * (height / this->yrange) - .001; //Adjusts the scale of the graph, according to the range and the size of the step
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break;
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case 'b':
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this->xrange = xmaximum - xminimum;
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this->graphScale = (xStepSize) * (width / this->xrange) - .001; //Adjusts the scale of the graph, according to the range and the size of the step
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break;
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case 'c':
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this->yrange = ymaximum - yminimum;
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this->xrange = xmaximum - xminimum;
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break;
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}
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}
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void drawGraph(){
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double level, data, i;
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switch(graphType){
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case 'a':
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double my;
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if (this->redraw) { //Prints the labels
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display.clearDisplay();
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this->redraw = false;
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display.fillRect(0, 0, 127 , 14, SSD1306_WHITE);
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display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
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display.setTextSize(1);
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display.setCursor(2, 4);
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display.println(this->title);
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for (i = 0; i <= this->height; i += this->graphScale) {
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my = this->ypos - this->height + i;
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display.drawFastHLine(this->xpos + this->width + 1, my, 5, SSD1306_WHITE);
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// draw lables
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
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display.setCursor(this->xpos + this->width + 12, my - 3 );
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data = this->ymaximum - ( i * (this->yStepSize / this->graphScale));
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display.print(data, this->digit);
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}
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}
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// compute level of bar graph that is scaled to the height and the hi and low vals
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// this is needed to accompdate for +/- range
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level = (this->height * (((this->value - this->yminimum) / (this->yrange))));
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// draw the bar graph
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// write a upper and lower bar to minimize flicker cause by blanking out bar and redraw on update
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display.drawRect(this->xpos, this->ypos - this->height, this->width, this->height, SSD1306_WHITE);
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display.fillRect(this->xpos, this->ypos - this->height, this->width, this->height - level, SSD1306_BLACK);
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display.drawRect(this->xpos, this->ypos - this->height, this->width, this->height, SSD1306_WHITE);
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display.fillRect(this->xpos, this->ypos - level, this->width, level, SSD1306_WHITE);
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// up until now print sends data to a video buffer NOT the screen
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// this call sends the data to the screen
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display.display();
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break;
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case 'b':
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if (this->redraw) {
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display.clearDisplay();
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this->redraw = false;
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display.fillRect(0, 0, 127 , 16, SSD1306_WHITE);
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display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
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display.setTextSize(1);
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display.setCursor(2, 4);
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display.println(this->title);
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// draw the text
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for (i = 0; i <= this->width; i += this->graphScale) {
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display.drawFastVLine(i + this->xpos , this->ypos , 5, SSD1306_WHITE);
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// draw lables
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
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display.setCursor(i + this->xpos , this->ypos + 10);
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// addling a small value to eliminate round off errors
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// this val may need to be adjusted
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data = ( i * (this->xStepSize / this->graphScale)) + this->xminimum + 0.00001;
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display.print(data, this->digit);
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}
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}
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// compute level of bar graph that is scaled to the width and the hi and low vals
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// this is needed to accompdate for +/- range capability
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// draw the bar graph
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// write a upper and lower bar to minimize flicker cause by blanking out bar and redraw on update
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level = (this->width * (((this->value - this->xminimum) / (this->xmaximum - this->xminimum))));
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display.fillRect(this->xpos + level, this->ypos - this->height, this->width - level, this->height, SSD1306_BLACK);
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display.drawRect(this->xpos, this->ypos - this->height, this->width, this->height, SSD1306_WHITE);
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display.fillRect(this->xpos, this->ypos - this->height, level, this->height, SSD1306_WHITE);
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// up until now print sends data to a video buffer NOT the screen
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// this call sends the data to the screen
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display.display();
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break;
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case 'c':
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double temp;
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if (this->redraw == true) {
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this->redraw = false;
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display.clearDisplay();
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display.fillRect(0, 0, 127 , 16, SSD1306_WHITE);
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display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
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display.setTextSize(1);
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display.setCursor(2, 4);
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display.println(title);
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this->ox = (this->count - this->xminimum) * (this->width) / (this->xrange) + this->xpos;
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this->oy = (this->value - this->yminimum) * (- this->height) / (this->yrange) + this->ypos;
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// draw y scale
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
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for ( i = this->yminimum; i <= this->ymaximum; i += this->yStepSize) {
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// compute the transform
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// note my transform funcition is the same as the map function, except the map uses long and we need doubles
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temp = (i - this->yminimum) * (- this->height) / (this->ymaximum - this->yminimum) + this->ypos;
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if (i == 0) {
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display.drawFastHLine(this->xpos - 3, temp, this->width + 3, SSD1306_WHITE);
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}
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else {
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display.drawFastHLine(this->xpos - 3, temp, 3, SSD1306_WHITE);
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}
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display.setCursor(this->xpos - 27, temp - 3);
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display.println(i, this->digit);
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}
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// draw x scale
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for (i = this->xminimum; i <= this->xmaximum; i += this->xStepSize) {
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// compute the transform
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
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temp = (i - this->xminimum) * (this->width) / (this->xrange) + this->xpos;
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if (i == 0) {
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display.drawFastVLine(temp, this->ypos - this->height, this->height + 3, SSD1306_WHITE);
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}
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else {
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display.drawFastVLine(temp, this->ypos, 3, SSD1306_WHITE);
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}
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display.setCursor(temp, this->ypos + 6);
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display.println(i, this->digit);
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}
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}
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// graph drawn now plot the data
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// the entire plotting code are these few lines...
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this->x = (this->count - this->xminimum) * (this->width) / (this->xrange) + this->xpos;
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this->value = (this->value - this->yminimum) * (- this->height) / (this->yrange) + this->ypos;
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display.drawLine(this->ox, this->oy, this->x, this->value, SSD1306_WHITE);
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display.drawLine(this->ox, this->oy - 1, this->x, this->value - 1, SSD1306_WHITE);
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this->ox = this->x;
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this->oy = this->value;
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// up until now print sends data to a video buffer NOT the screen
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// this call sends the data to the screen
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display.display();
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this->count += 1;
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if(this->ox >= (this->xpos + this->width)){
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this->redraw = true;
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this->count = xminimum;
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}
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}
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}
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void redrawFlag(){ // Activates the redraw bool to get the graph printed correctly
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this->redraw = true;
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}
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void setPreviousScreen(int prev){
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this->previousScreen = prev;
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}
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void setPreviousContentType(int prev){
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this->previousContentType = prev;
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}
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int getPreviousScreen(){
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int prev = this->previousScreen;
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return prev;
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}
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int getPreviousContentType(){
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int prev = this->previousContentType;
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return prev;
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}
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void assignValue(double value){
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this->value = value;
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}
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void reset(){
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this->x = 0;
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}
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};
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class Modifier{ //ContentType (2)
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private:
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String title;
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int *value;
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int max;
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int min;
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int step;
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int previousScreen = 0;
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int previousContentType = 0;
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public:
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void configure(String title, int *value, int max, int min, int step){
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this->title = title;
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this->value = value;
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this->max = max;
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this->min = min;
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this->step = step;
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}
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void drawModifier(){
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display.clearDisplay();
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display.fillRect(0, 0, 127 , 16, SSD1306_WHITE);
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display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
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display.setTextSize(1);
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display.setCursor(2, 4);
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display.println(this->title);
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display.setTextColor(SSD1306_WHITE);
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display.setTextSize(3);
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display.setCursor(2, ((DISP_HEIGHT - 16 - 15)/2) + 16);
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display.println(*this->value);
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display.display();
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display.setTextSize(1);
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}
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void increaseValue(){
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if((*this->value + this->step) <= this->max){
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*this->value += this->step;
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}
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}
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void decreaseValue(){
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if((*this->value - this->step) >= this->min){
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*this->value -= this->step;
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}
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}
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void setPreviousScreen(int prev){
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this->previousScreen = prev;
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}
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void setPreviousContentType(int prev){
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this->previousContentType = prev;
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}
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int getPreviousScreen(){
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int prev = this->previousScreen;
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return prev;
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}
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int getPreviousContentType(){
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int prev = this->previousContentType;
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return prev;
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}
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};
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class Screen{
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private:
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Menu menu[MAX_MENUS]; //Array of menus to use
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Graph graph[MAX_GRAPHS]; //Array of graphs to use
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Modifier modifier[MAX_MODIFIERS]; //Array of modifiers to use
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int counterM = 0; //Number of menus created
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int counterG = 0; //Number of graphs created
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int counterMod = 0;
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bool redraw = true; //Redraw interface for when there is a change of screen
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int currentScreen = 0;
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int contentType = 0;
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public:
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void configure(bool fullsetting){ //This method allows the configuration of the display when the parameter is true. Otherwise only prints a greeting message.
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if(fullsetting){
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//Adafruit_SSD1306 display(DISP_WIDTH, DISP_HEIGHT, &Wire, -1);
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Serial.begin(115200);
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if (!display.begin(SSD1306_SWITCHCAPVCC, ADDRESS)) {
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#ifdef __DEBUG__
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Serial.println("Display not found!");
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#endif
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while (true);
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}
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}
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display.clearDisplay();
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// Text size
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display.setTextSize(2);
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// Text color
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display.setTextColor(SSD1306_WHITE);
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// Text position
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display.setCursor(25, 20);
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display.println("Welcome");
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display.setTextSize(1);
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display.display();
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delay(5000);
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}
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void createMenu(int sizex, int sizey){ //This method is used for the creation of a menu
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this->menu[counterM].configure(sizex, sizey);
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this->counterM++;
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}
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void createOption(int menuIndex, String content, int destinationType, int destinationIndex){ //this method should be used for creating an option in a menu
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this->menu[menuIndex].createOption(content, destinationType, destinationIndex);
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}
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void createVGraph(String title, double xpos, double ypos, double width, double height,
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double yminimum, double ymaximum, double yStepSize, int digit){ //this method calls the configure() of graph for a vertical graph
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this->graph[counterG].configure(title, 'a', xpos, ypos, width, height, yminimum, ymaximum, 0, 0, yStepSize, 0, digit);
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this->counterG++;
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}
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void createHGraph(String title, double xpos, double ypos, double width, double height,
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double xminimum, double xmaximum, double xStepSize, int digit){ //this method calls the configure() of graph for a horizontal graph
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this->graph[counterG].configure(title, 'b', xpos, ypos, width, height, 0, 0, xminimum, xmaximum, 0, xStepSize, digit);
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counterG++;
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}
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void createCGraph(String title, double xpos, double ypos, double width, double height,
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double yminimum, double ymaximum, double xminimum, double xmaximum, double yStepSize, double xStepSize, int digit){ //this method calls the configure() of graph for a cartesian chart
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this->graph[counterG].configure(title, 'c', xpos, ypos, width, height, yminimum, ymaximum, xminimum, xmaximum, yStepSize, xStepSize, digit);
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counterG++;
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}
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void createModifier(String title, int *value, int max, int min, int step){ //This method is used for the creation of a menu
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this->modifier[counterMod].configure(title, value, max, min, step);
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this->counterMod++;
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}
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/*
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void redrawFlag(){
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this->redraw = true;
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}
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*/
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//The following method is used for assingning a value to a graph
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//This can be avoided using pointers to the variable to plot in the graph
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void graphAssignValue(int graphIndex, double value){
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this->graph[graphIndex].assignValue(value);
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this->redraw = true;
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}
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//This method controls the whole interface, it needs to be called within a loop
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void control(){
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if (redraw){
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if (contentType == 0){
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menu[currentScreen].drawMenu();
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}
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else if (contentType == 1){
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graph[currentScreen].drawGraph();
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}
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else if (contentType == 2){
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modifier[currentScreen].drawModifier();
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}
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this->redraw = false;
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}
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}
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//The following two methods allow the change in position of the cursor
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void increasePos(){
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if(this->menu[this->currentScreen].extractPos() < this->menu[this->currentScreen].extractOptNumber() - 1)
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this->menu[this->currentScreen].increasePos();
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}
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void decreasePos(){
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if(this->menu[this->currentScreen].extractPos() > 0)
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this->menu[this->currentScreen].decreasePos();
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}
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//This method lets the user go into another screen by selecting an option
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void goTo(){
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if(this->contentType == 0){
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int newScreen = this->menu[this->currentScreen].extractDestinationIndex();
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int newContentType = this->menu[this->currentScreen].extractDestinationType();
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if (newContentType == 0){
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this->menu[newScreen].setPreviousScreen(this->currentScreen);
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this->menu[newScreen].setPreviousContentType(this->contentType);
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}
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else if(newContentType == 1){
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this->graph[newScreen].setPreviousScreen(this->currentScreen);
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this->graph[newScreen].setPreviousContentType(this->contentType);
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this->graph[newScreen].reset();
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this->graph[newScreen].redrawFlag();
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}
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else if(newContentType == 2){
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this->modifier[newScreen].setPreviousScreen(this->currentScreen);
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this->modifier[newScreen].setPreviousContentType(this->contentType);
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}
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this->contentType = newContentType;
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this->currentScreen = newScreen;
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this->redraw = true;
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}
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}
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void goBack(){
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if(contentType == 0){
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//Gets indexes from previous screen saved in actual screen if it is a menu, and sets them as the current indexes
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this->currentScreen = this->menu[this->currentScreen].getPreviousScreen();
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this->contentType = this->menu[this->currentScreen].getPreviousContentType();
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}
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else if(contentType == 1){
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//Gets indexes from previous screen saved in actual screen if it is a graph, and sets them as the current indexes
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this->currentScreen = this->graph[this->currentScreen].getPreviousScreen();
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this->contentType = this->graph[this->currentScreen].getPreviousContentType();
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}
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else if(contentType == 2){
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this->currentScreen = this->modifier[this->currentScreen].getPreviousScreen();
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this->contentType = this->modifier[this->currentScreen].getPreviousContentType();
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}
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}
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//These methods control the plus and minus button actions
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void plusAction(){
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if(contentType == 0){
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increasePos();
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}
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else if(contentType == 2){
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this->modifier[currentScreen].increaseValue();
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}
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}
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void minusAction(){
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if(contentType == 0){
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decreasePos();
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}
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else if(contentType == 2){
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this->modifier[currentScreen].decreaseValue();
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}
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}
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};
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class Keyboard{
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private:
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byte goTo;
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byte goBack;
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byte plus;
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byte minus;
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byte debounceTime;
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Screen *screen;
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public:
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//Keyboard constructor
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Keyboard(byte goTo, byte goBack, byte plus, byte minus, byte debounceTime, Screen * screen){
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this->goTo = goTo;
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this->goBack = goBack;
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this->plus = plus;
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this->minus = minus;
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this->debounceTime = debounceTime;
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this->screen = screen;
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pinMode(goTo, INPUT_PULLUP);
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pinMode(goBack, INPUT_PULLUP);
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pinMode(plus, INPUT_PULLUP);
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pinMode(minus, INPUT_PULLUP);
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}
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//Debouncing functions
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void checkGoTo(){
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static char cont;
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if(digitalRead(this->goTo) == LOW)
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cont++;
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else
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cont = 0;
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if(cont == debounceTime/REFRESH){
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this->screen->goTo();
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}
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}
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void checkGoBack(){
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static char cont;
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if(digitalRead(this->goBack) == LOW){
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cont++;
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}
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else
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cont = 0;
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if(cont == debounceTime/REFRESH){
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this->screen->goBack();
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}
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}
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void checkPlus(){
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static char cont;
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if(digitalRead(this->plus) == LOW)
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cont++;
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else
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cont = 0;
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if(cont == debounceTime/REFRESH){
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this->screen->plusAction();
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}
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}
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void checkMinus(){
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static char cont;
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if(digitalRead(this->minus) == LOW)
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cont++;
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else
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cont = 0;
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if(cont == debounceTime/REFRESH){
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this->screen->minusAction();
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}
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}
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// All buttons are checked with this method
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void control(){
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this->checkGoTo();
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this->checkGoBack();
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this->checkPlus();
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this->checkMinus();
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}
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};
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int i = 0;
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int multiplier = 1;
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Screen screen;
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Keyboard keyboard(13, 12, 14, 27, 30, &screen);
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void setup(){
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screen.configure(true);
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screen.createMenu(128, 13); //Menu 0
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screen.createMenu(128, 13); //Menu 1
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/*String title, char graphType, double xpos, double ypos, double width, double height,
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double yminimum, double ymaximum, double xminimum, double xmaximum, double yStepSize, double xStepSize, double digit*/
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screen.createVGraph("Grafica 1", 25, 60, 40, 40, 0, 100, 10, 0); //Graph 0
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screen.createHGraph("Grafica 2", 10, 40, 100, 20, 0, 100, 10, 0); //Graph 1
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screen.createCGraph("Grafica 3", 30, 50, 75, 30, 0, 100, 0, 1000, 25, 250, 0); //Graph 2
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screen.createModifier("Modify variable", &multiplier, 5, 1, 1);
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screen.createOption(0, "Vertical graph", 1, 0);
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//Creates the first option in Menu 0, directing to a graph (contentType = 1 (Graph)), 0 (Graph 0)
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screen.createOption(0, "Horizontal graph", 1, 1);
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screen.createOption(0, "Cartesian graph", 1, 2);
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screen.createOption(0, "Extra option", 0, 1);
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screen.createOption(1, "Test", 1, 3);
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screen.createOption(1, "Working?", 2, 2);
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screen.createOption(1, "Modify variable", 2, 0);
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// screen.increasePos();
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// screen.increasePos();
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// screen.goTo();
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// screen.graphAssignValue(2, 50);
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// screen.goBack();
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// screen.increasePos();
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// screen.goTo();
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// screen.goBack();
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// screen.decreasePos();
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}
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void loop(){
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screen.control(); //Controls the screen and redraws if needed
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keyboard.control();
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if(i <= 100){
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screen.graphAssignValue(1, i); //Assigning a demo value to Graph 1
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screen.graphAssignValue(2, i); //Assigning a demo value to Graph 2
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i += multiplier;
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}
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else
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i = 0;
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delay(REFRESH); //Refresh time (approx)
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}
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