Team Alpha / Mbed 2 deprecated UserIntefaceLCD

LCD implementation of our project.

Dependencies:   mbed mbed-rtos MLX90614

LevelMeter.cpp@5:5b1a8ad6c187, 2015-05-28 (annotated)

Committer:
ovidiup13
Date:
Thu May 28 16:07:00 2015 +0000
Revision:
5:5b1a8ad6c187
Parent:
3:688b62ff6474
Child:
6:49a007861c76
added levelmeter functionality and threading

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ovidiup13 3:688b62ff6474 1 #include "LevelMeter.h"
ovidiup13 3:688b62ff6474 2
ovidiup13 5:5b1a8ad6c187 3 LevelMeter::LevelMeter(ST7565 *lcd, Item * back)
ovidiup13 5:5b1a8ad6c187 4 {
ovidiup13 5:5b1a8ad6c187 5 this->st7565 = lcd;
ovidiup13 5:5b1a8ad6c187 6 this->title = " Level meter";
ovidiup13 5:5b1a8ad6c187 7 this->back = back;
ovidiup13 5:5b1a8ad6c187 8 lt = NULL;
ovidiup13 5:5b1a8ad6c187 9 }
ovidiup13 5:5b1a8ad6c187 10
ovidiup13 5:5b1a8ad6c187 11 void LevelMeter::display(void)
ovidiup13 5:5b1a8ad6c187 12 {
ovidiup13 5:5b1a8ad6c187 13 //create a new thread to get and update compass - do later
ovidiup13 5:5b1a8ad6c187 14 if(lt != NULL) return;//thread is already running
ovidiup13 5:5b1a8ad6c187 15 lt = new Thread(&LevelMeter::lt_start, this);
ovidiup13 5:5b1a8ad6c187 16 lt->signal_set(START_THREAD);
ovidiup13 3:688b62ff6474 17 }
ovidiup13 3:688b62ff6474 18
ovidiup13 5:5b1a8ad6c187 19 //trigger for starting the thread
ovidiup13 5:5b1a8ad6c187 20 void LevelMeter::lt_start(void const *args)
ovidiup13 5:5b1a8ad6c187 21 {
ovidiup13 5:5b1a8ad6c187 22 LevelMeter *l = (LevelMeter*)args;
ovidiup13 5:5b1a8ad6c187 23 l->update_cross();
ovidiup13 3:688b62ff6474 24 }
ovidiup13 3:688b62ff6474 25
ovidiup13 5:5b1a8ad6c187 26 void LevelMeter::update_cross()
ovidiup13 5:5b1a8ad6c187 27 {
ovidiup13 5:5b1a8ad6c187 28 lt->signal_wait(START_THREAD); //wait for signal to start thread
ovidiup13 5:5b1a8ad6c187 29 //draw the static circle
ovidiup13 5:5b1a8ad6c187 30 int i = 0, j = 0;
ovidiup13 5:5b1a8ad6c187 31 while(true) {
ovidiup13 5:5b1a8ad6c187 32 draw_elements(i++, j++);
ovidiup13 5:5b1a8ad6c187 33 //do something
ovidiup13 5:5b1a8ad6c187 34 Thread::wait(30);
ovidiup13 5:5b1a8ad6c187 35 st7565->clear();
ovidiup13 5:5b1a8ad6c187 36 }
ovidiup13 5:5b1a8ad6c187 37 }
ovidiup13 5:5b1a8ad6c187 38
ovidiup13 5:5b1a8ad6c187 39 void LevelMeter::draw_elements(double rx, double ry){
ovidiup13 5:5b1a8ad6c187 40 int cross_x, cross_y;
ovidiup13 3:688b62ff6474 41
ovidiup13 3:688b62ff6474 42 //draw the circles
ovidiup13 5:5b1a8ad6c187 43 st7565->drawcircle(X0, Y0, RADIUS_lvl, 1);
ovidiup13 5:5b1a8ad6c187 44
ovidiup13 5:5b1a8ad6c187 45 //draw middle cross
ovidiup13 3:688b62ff6474 46 st7565->drawline(X0 - 2, Y0, X0 + 2, Y0, 20);
ovidiup13 3:688b62ff6474 47 st7565->drawline(X0, Y0 - 2, X0, Y0 + 2, 20);
ovidiup13 3:688b62ff6474 48
ovidiup13 5:5b1a8ad6c187 49 //check if rotation in negative interval
ovidiup13 5:5b1a8ad6c187 50 if(rx >= 270) rx -= 360;
ovidiup13 5:5b1a8ad6c187 51 if(ry >= 270) ry -= 360;
ovidiup13 5:5b1a8ad6c187 52
ovidiup13 5:5b1a8ad6c187 53 //calculate coordinates
ovidiup13 5:5b1a8ad6c187 54 cross_x = (int) ((rx * SCREEN_WIDTH)/360.0) + 63;
ovidiup13 5:5b1a8ad6c187 55 cross_y = (int) ((ry * SCREEN_HEIGHT)/360.0) + 35;
ovidiup13 5:5b1a8ad6c187 56
ovidiup13 5:5b1a8ad6c187 57 printf("Coordinates for cross are: %d, %d\n", cross_x, cross_y);
ovidiup13 5:5b1a8ad6c187 58
ovidiup13 5:5b1a8ad6c187 59 //draw the cross
ovidiup13 5:5b1a8ad6c187 60 st7565->drawline(cross_x, cross_y - RADIUS_lvl/2, cross_x, cross_y + RADIUS_lvl/2, DEFAULT_COLOR);
ovidiup13 5:5b1a8ad6c187 61 st7565->drawline(cross_x - RADIUS_lvl/2, cross_y, cross_x + RADIUS_lvl/2, cross_y, DEFAULT_COLOR);
ovidiup13 5:5b1a8ad6c187 62
ovidiup13 5:5b1a8ad6c187 63 //display
ovidiup13 3:688b62ff6474 64 st7565->display();
ovidiup13 5:5b1a8ad6c187 65 }
ovidiup13 5:5b1a8ad6c187 66
ovidiup13 5:5b1a8ad6c187 67 void LevelMeter::update(char c)
ovidiup13 5:5b1a8ad6c187 68 {
ovidiup13 5:5b1a8ad6c187 69 if(c == 'y') {
ovidiup13 5:5b1a8ad6c187 70 lt->terminate();
ovidiup13 5:5b1a8ad6c187 71 free(lt); lt = NULL;
ovidiup13 5:5b1a8ad6c187 72 st7565->clear();
ovidiup13 5:5b1a8ad6c187 73 this->setSelectedScreen(back);
ovidiup13 5:5b1a8ad6c187 74 }
ovidiup13 3:688b62ff6474 75 }