Diff: main.cpp

Revision:

0:824466ffa6da

Child:

2:d97e71edb2b3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Dec 10 17:59:48 2018 +0000
@@ -0,0 +1,181 @@
+#include "mbed.h"
+#include "Thermal.h"
+#include "USBHostKeyboard.h"
+#include "uVGAIII.h"
+
+#define SIZE_X       480
+#define SIZE_Y       800
+
+using namespace std;
+
+// Debugging LEDs
+DigitalOut led(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+uVGAIII ecran(p9,p10,p11); // serial tx, serial rx, reset pin;
+Thermal printer(p28, p27, 19200);
+
+int verticalCursor = 2;
+int horizontalCursor = 0;
+
+char currentLine[48];
+int currentLineIndex = 0;
+
+// hardcode plot x^2
+void plot(void const *)
+{
+    int xOffset = 600;
+    int yOffset = 260;
+    int pastX = 0;
+    int pastY = 0;
+    int currentX = 0;
+    int currentY = 0;
+    
+    for(double i = -20; i < 20; i++) {
+        //evaluate();
+        currentX = i*3 + xOffset;
+        currentY = yOffset-(i*i);
+        if(pastX == 0){
+            pastX = currentX;
+            pastY = currentY;
+            continue;
+        }
+        //ecran.line(pastX, pastY, currentX, currentY, RED);
+        //ecran.put_pixel(i*2 + xOffset, yOffset-(i*i),RED);
+        pastX = currentX;
+        pastY = currentY;
+    }
+    while(1) {
+        Thread::wait(200);
+    }
+}
+
+void onKeyCode(uint8_t key, uint8_t modifier) {
+    
+    led3 = 1;
+    
+    if(key == 0) {
+        led3 = 0;
+        return;
+    }
+    
+    // Handle newline
+    if(key == 0x0A) {
+        
+        // Check if going off end of screen
+        if(verticalCursor > 37) {
+            ecran.filled_rectangle(0, 0 , 399, 480, DGREY);
+            verticalCursor = 0;
+        } else {
+            // Move cursor to newline
+            verticalCursor+=2;
+        }
+        
+        horizontalCursor = 0;
+        
+        ecran.move_cursor(verticalCursor, horizontalCursor);
+         
+        ecran.puts(currentLine);  
+        printer.printf(currentLine);
+        printer.feed(2);
+        
+        for(size_t i = 0; i < 48; i++) {
+            currentLine[i] = NULL;
+        }
+        
+        currentLineIndex = 0;
+        
+        led3 = 0;
+        return;
+    }
+    
+    if(key == 0x08)
+    {
+        if(currentLineIndex != 0)
+        {
+            currentLineIndex--;
+            currentLine[currentLineIndex] = NULL;
+        }
+        led3 = 0;
+        return;
+    }
+    
+    // Move the cursor 1 character over
+    //ecran.move_cursor(verticalCursor, horizontalCursor++);
+    
+    // Append character to curret line string
+    currentLine[currentLineIndex] = (char)key;
+    
+    if(currentLineIndex < 47) {
+        currentLineIndex++;
+    }
+    
+    led3 = 0;
+}
+
+void keyboard_task(void const *) {
+    
+    USBHostKeyboard keyboard;
+    
+    while(1) {
+        // try to connect a USB keyboard
+        while(!keyboard.connect()) {
+            Thread::wait(1);
+        } 
+        
+        if(keyboard.connected()) led2 = 1;
+        
+        // When connected, attach handler called on keyboard event
+        keyboard.attach(onKeyCode);
+        
+        // Wait until the keyboard is disconnected
+        while(keyboard.connected())
+            Thread::wait(1); 
+            
+        led2 = 0;
+    }
+}
+
+int main() {    
+    // Set up display
+    ecran.baudrate(300000);
+    ecran.screen_mode(LANDSCAPE);
+    ecran.graphics_parameters(RESOLUTION, 2); 
+    ecran.touch_status();
+    //ecran.background_color(DGREY);
+    ecran.background_color(WHITE);
+    ecran.cls();
+
+    ecran.move_cursor(0, 0);
+    ecran.char_width('d');
+    ecran.char_height('d');
+    ecran.text_fgd_color(WHITE);
+    ecran.text_bgd_color(DGREY);
+    ecran.puts("Booting up...");   
+    
+    ecran.line(400, 0 , 400, 480, RED);
+        
+    // Use old style threading
+    Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 256 * 4);
+    
+    ecran.move_cursor(2, 0);
+    ecran.puts("Ready!");
+    
+    //printer.printf("Printing from main");
+    //printer.feed(2);
+    //printer.test();   
+    
+    // Clear currentLine array before using
+    for(size_t i = 0; i < 48; i++) {
+            currentLine[i] = NULL;
+    }
+        
+    //Thread drawPlot(plot, NULL, osPriorityNormal, 256*4);
+    
+    while(1) {
+        led=!led;
+        Thread::wait(500); // Wait .5s in main thread
+    }
+}