Mariana Batalim / Mbed 2 deprecated T00215868_Threads

T00215868_Threads

Dependencies:   mbed mbed-rtos C12832_lcd LCD_fonts

main.cpp@4:e1e874f4c973, 2020-06-20 (annotated)

Committer:
mariana_batalim
Date:
Sat Jun 20 10:44:28 2020 +0000
Revision:
4:e1e874f4c973
Parent:
3:3ec443c0842a 
T00215868_Threads

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 2:a69c8c5f5b03 1 // example to test the mbed Lab Board lcd lib with the mbed rtos
dreschpe 1:1c6a9eaf55b5 2 // Pot1 change the contrast
dreschpe 1:1c6a9eaf55b5 3 // Pot2 change the speed of the sin wave
dreschpe 1:1c6a9eaf55b5 4
dreschpe 0:f6a57b843f79 5 #include "mbed.h"
dreschpe 0:f6a57b843f79 6 #include "rtos.h"
dreschpe 0:f6a57b843f79 7 #include "Small_6.h"
dreschpe 0:f6a57b843f79 8 #include "Small_7.h"
dreschpe 0:f6a57b843f79 9 #include "Arial_9.h"
dreschpe 0:f6a57b843f79 10 #include "stdio.h"
dreschpe 1:1c6a9eaf55b5 11 #include "C12832_lcd.h"
dreschpe 0:f6a57b843f79 12
mariana_batalim 4:e1e874f4c973 13 BusIn joy(p15,p12,p13,p16);
mariana_batalim 4:e1e874f4c973 14 DigitalIn fire(p14);
mariana_batalim 4:e1e874f4c973 15 BusOut leds(LED1,LED2,LED3,LED4);
dreschpe 3:3ec443c0842a 16 C12832_LCD LCD;
dreschpe 1:1c6a9eaf55b5 17 AnalogIn Pot1(p19);
dreschpe 1:1c6a9eaf55b5 18 AnalogIn Pot2(p20);
mariana_batalim 4:e1e874f4c973 19 Mutex lcd_mutex;
dreschpe 0:f6a57b843f79 20
dreschpe 2:a69c8c5f5b03 21
mariana_batalim 4:e1e874f4c973 22 // Thread 0
mariana_batalim 4:e1e874f4c973 23 // LEDs controlled by JOYSTICK
mariana_batalim 4:e1e874f4c973 24 void thread0(void const *args)
mariana_batalim 4:e1e874f4c973 25 {
mariana_batalim 4:e1e874f4c973 26 int j;
mariana_batalim 4:e1e874f4c973 27 while(true) { // thread loop
mariana_batalim 4:e1e874f4c973 28 if (fire) {
mariana_batalim 4:e1e874f4c973 29 leds=0xf;
mariana_batalim 4:e1e874f4c973 30 } else {
mariana_batalim 4:e1e874f4c973 31 leds=joy;
mariana_batalim 4:e1e874f4c973 32 }
mariana_batalim 4:e1e874f4c973 33 wait(0.1);
mariana_batalim 4:e1e874f4c973 34 }
mariana_batalim 4:e1e874f4c973 35 }
mariana_batalim 4:e1e874f4c973 36
mariana_batalim 4:e1e874f4c973 37
dreschpe 0:f6a57b843f79 38
dreschpe 2:a69c8c5f5b03 39 // Thread 1
dreschpe 2:a69c8c5f5b03 40 // print counter into first line and wait for 1 s
dreschpe 0:f6a57b843f79 41 void thread1(void const *args)
dreschpe 0:f6a57b843f79 42 {
dreschpe 0:f6a57b843f79 43 int i;
dreschpe 0:f6a57b843f79 44 while(true) { // thread loop
dreschpe 2:a69c8c5f5b03 45 lcd_mutex.lock();
dreschpe 0:f6a57b843f79 46 LCD.locate(0,0);
dreschpe 0:f6a57b843f79 47 LCD.set_font((unsigned char*) Small_6);
dreschpe 3:3ec443c0842a 48 LCD.printf("Thread1 count: %d",i);
dreschpe 2:a69c8c5f5b03 49 lcd_mutex.unlock();
dreschpe 0:f6a57b843f79 50 i++;
dreschpe 0:f6a57b843f79 51 Thread::wait(1000);
dreschpe 0:f6a57b843f79 52 }
dreschpe 0:f6a57b843f79 53 }
dreschpe 0:f6a57b843f79 54
dreschpe 2:a69c8c5f5b03 55 // Thread 2
dreschpe 2:a69c8c5f5b03 56 // print counter into third line and wait for 0,5s
dreschpe 0:f6a57b843f79 57 void thread2(void const *args)
dreschpe 0:f6a57b843f79 58 {
dreschpe 1:1c6a9eaf55b5 59 int k;
dreschpe 0:f6a57b843f79 60 while(true) { // thread loop
dreschpe 2:a69c8c5f5b03 61 lcd_mutex.lock();
dreschpe 0:f6a57b843f79 62 LCD.locate(0,20);
dreschpe 0:f6a57b843f79 63 LCD.set_font((unsigned char*) Arial_9);
dreschpe 3:3ec443c0842a 64 LCD.printf("Thread 2 count : %d",k);
dreschpe 2:a69c8c5f5b03 65 lcd_mutex.unlock();
dreschpe 1:1c6a9eaf55b5 66 k++;
dreschpe 2:a69c8c5f5b03 67 Thread::wait(500); // wait 0.5s
dreschpe 0:f6a57b843f79 68 }
dreschpe 0:f6a57b843f79 69 }
dreschpe 0:f6a57b843f79 70
dreschpe 2:a69c8c5f5b03 71 // Thread 3
dreschpe 2:a69c8c5f5b03 72 // print a sin function in a small window
dreschpe 2:a69c8c5f5b03 73 // the value of pot 1 change the speed of the sinwave
dreschpe 2:a69c8c5f5b03 74 void thread3(void const *args)
dreschpe 1:1c6a9eaf55b5 75 {
dreschpe 1:1c6a9eaf55b5 76 int i,k,v;
dreschpe 1:1c6a9eaf55b5 77 double s,a;
dreschpe 1:1c6a9eaf55b5 78 k = 1;
dreschpe 2:a69c8c5f5b03 79 lcd_mutex.lock();
dreschpe 1:1c6a9eaf55b5 80 LCD.rect(89,0,127,17,1);
dreschpe 2:a69c8c5f5b03 81 lcd_mutex.unlock();
dreschpe 1:1c6a9eaf55b5 82 while(true) { // thread loop
dreschpe 1:1c6a9eaf55b5 83 v = Pot1.read_u16(); // get value of pot 1
dreschpe 2:a69c8c5f5b03 84 lcd_mutex.lock();
dreschpe 1:1c6a9eaf55b5 85 for (i=90; i<127; i++) {
dreschpe 2:a69c8c5f5b03 86 s = 8 * sin((long double)(i+k) /5); // pixel to print
dreschpe 2:a69c8c5f5b03 87 a = 8 * sin((long double)(i+k-1) /5); // old pixel to erase
dreschpe 2:a69c8c5f5b03 88 LCD.pixel(i,9 + (int)a ,0); // erase pixel
dreschpe 2:a69c8c5f5b03 89 LCD.pixel(i,9 + (int)s ,1); // print pixel
dreschpe 1:1c6a9eaf55b5 90 }
dreschpe 2:a69c8c5f5b03 91 LCD.copy_to_lcd(); // LCD.pixel do not update the lcd
dreschpe 2:a69c8c5f5b03 92 lcd_mutex.unlock();
dreschpe 1:1c6a9eaf55b5 93 k++;
dreschpe 2:a69c8c5f5b03 94 Thread::wait(v/100); // value of pot1 / 100
dreschpe 1:1c6a9eaf55b5 95 }
dreschpe 1:1c6a9eaf55b5 96 }
dreschpe 0:f6a57b843f79 97
dreschpe 2:a69c8c5f5b03 98 // Thread 4
dreschpe 2:a69c8c5f5b03 99 // input pot 2 and change the contrast of lcd
dreschpe 2:a69c8c5f5b03 100 void thread4(void const *args)
dreschpe 1:1c6a9eaf55b5 101 {
dreschpe 1:1c6a9eaf55b5 102 int k;
dreschpe 1:1c6a9eaf55b5 103 while(true) { // thread loop
dreschpe 1:1c6a9eaf55b5 104 k = Pot2.read_u16(); // get the value of poti 2
dreschpe 2:a69c8c5f5b03 105 k = k >> 10; // we need only 6 bit for contrast
dreschpe 2:a69c8c5f5b03 106 lcd_mutex.lock();
dreschpe 1:1c6a9eaf55b5 107 LCD.set_contrast(k);
dreschpe 2:a69c8c5f5b03 108 lcd_mutex.unlock();
dreschpe 2:a69c8c5f5b03 109 Thread::wait(500); // wait 0.5s
dreschpe 1:1c6a9eaf55b5 110 }
dreschpe 1:1c6a9eaf55b5 111 }
dreschpe 1:1c6a9eaf55b5 112
dreschpe 2:a69c8c5f5b03 113
dreschpe 2:a69c8c5f5b03 114 // print the actual contrast
dreschpe 0:f6a57b843f79 115 int main()
dreschpe 0:f6a57b843f79 116 {
dreschpe 0:f6a57b843f79 117 int j;
dreschpe 2:a69c8c5f5b03 118 LCD.cls();
dreschpe 2:a69c8c5f5b03 119
mariana_batalim 4:e1e874f4c973 120 Thread t0(thread0); //start thread0
dreschpe 2:a69c8c5f5b03 121 Thread t1(thread1); //start thread1
dreschpe 2:a69c8c5f5b03 122 Thread t2(thread2); //start thread2
dreschpe 2:a69c8c5f5b03 123 Thread t3(thread3); //start thread3
dreschpe 2:a69c8c5f5b03 124 Thread t4(thread4); //start thread4
dreschpe 0:f6a57b843f79 125
dreschpe 2:a69c8c5f5b03 126 while(true) { // main is the next thread
dreschpe 2:a69c8c5f5b03 127 lcd_mutex.lock();
dreschpe 1:1c6a9eaf55b5 128 LCD.locate(0,9);
dreschpe 0:f6a57b843f79 129 LCD.set_font((unsigned char*) Small_7);
dreschpe 2:a69c8c5f5b03 130 j = LCD.get_contrast(); // read the actual contrast
dreschpe 3:3ec443c0842a 131 LCD.printf("contrast : %d",j);
dreschpe 2:a69c8c5f5b03 132 lcd_mutex.unlock();
dreschpe 2:a69c8c5f5b03 133 Thread::wait(500); // wait 0.5s
dreschpe 0:f6a57b843f79 134 }
dreschpe 1:1c6a9eaf55b5 135
dreschpe 0:f6a57b843f79 136 }