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ECE 4180 Final
Dependencies: mbed wave_player mbed-rtos C12832_lcd 4DGL-uLCD-SE LCD_fonts SDFileSystem
main.cpp
- Committer:
- yqin70
- Date:
- 2019-12-03
- Revision:
- 0:4f77ae831ee7
- Child:
- 1:a1aa9a79070a
File content as of revision 0:4f77ae831ee7:
// example to test the mbed Lab Board lcd lib with the mbed rtos // Pot1 changes the contrast // Pot2 changes the speed of the sin wave #include "mbed.h" #include "SDFileSystem.h" #include "wave_player.h" #include "uLCD_4DGL.h" //setup some color objects in flash using const's #include "rtos.h" #include "Small_6.h" #include "Small_7.h" #include "Arial_9.h" #include "stdio.h" #include "C12832_lcd.h" //class for 3 PWM color values for RGBLED class LEDColor { public: LEDColor(float r, float g, float b); float red; float green; float blue; }; LEDColor:: LEDColor(float r, float g, float b) : red(r), green(g), blue(b) { } //Operator overload to adjust brightness with no color change LEDColor operator * (const LEDColor& x, const float& b) { return LEDColor(x.red*b,x.green*b,x.blue*b); } //Operator overload to add colors LEDColor operator + (const LEDColor& x, const LEDColor& y) { return LEDColor(x.red+y.red,x.green+y.green,x.blue+y.blue); } //Class to control an RGB LED using three PWM pins class RGBLed { public: RGBLed(PinName redpin, PinName greenpin, PinName bluepin); void write(float red,float green, float blue); void write(LEDColor c); RGBLed operator = (LEDColor c) { write(c); return *this; }; private: PwmOut _redpin; PwmOut _greenpin; PwmOut _bluepin; }; RGBLed::RGBLed (PinName redpin, PinName greenpin, PinName bluepin) : _redpin(redpin), _greenpin(greenpin), _bluepin(bluepin) { //50Hz PWM clock default a bit too low, go to 2000Hz (less flicker) _redpin.period(0.0005); } void RGBLed::write(float red,float green, float blue) { _redpin = red; _greenpin = green; _bluepin = blue; } void RGBLed::write(LEDColor c) { _redpin = c.red; _greenpin = c.green; _bluepin = c.blue; } //classes could be moved to include file //Setup RGB led using PWM pins and class RGBLed myRGBled(p23,p22,p21); //RGB PWM pins const LEDColor red(1.0,0.0,0.0); const LEDColor green(0.0,0.2,0.0); //brighter green LED is scaled down to same as red and //blue LED outputs on Sparkfun RGBLED const LEDColor blue(0.0,0.0,1.0); const LEDColor yellow(1.0,0.2,0.0); const LEDColor white(1.0,0.2,1.0); const LEDColor black(0.0,0.0,0.0); char bred=0; char bgreen=0; char bblue=0; volatile bool songselect = false; volatile bool homescreen = true; uLCD_4DGL uLCD(p28,p27,p30); SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card DigitalOut myled(LED1); DigitalIn pb1(p20); DigitalIn pb2(p19); // mutex to make the lcd lib thread safe Mutex lcd_mutex; int songnum = 1; AnalogIn joy_pot(p16); // Thread 1 // print counter into first line and wait for 1 s void thread1(void const *args) { while(true) { // thread loop if (homescreen){ lcd_mutex.lock(); uLCD.cls(); uLCD.text_height(1.8); uLCD.text_width(1.8); uLCD.color(WHITE); uLCD.locate(0,0); uLCD.printf("Pick a song"); uLCD.text_height(2); uLCD.text_width(2); uLCD.locate(1,2); uLCD.printf("Song1"); uLCD.locate(1,4); uLCD.printf("Song2"); uLCD.locate(1,6); uLCD.printf("Song3"); uLCD.rectangle(5, songnum*30, 100, songnum*30+25 ,GREEN); lcd_mutex.unlock(); if (songselect){ myled = 0; homescreen = false; lcd_mutex.lock(); uLCD.cls(); uLCD.printf("You selected song %2d",songnum); lcd_mutex.unlock(); } //FILE *fp = fopen("/sd/sdtest.txt", "r"); //char c = fgetc(fp); //while(c){ // c = fgetc(fp); // } } Thread::wait(200); } } void thread2(void const *args) { while(1){ //if (homescreen){ if ((joy_pot <= (1.4/3.3)) && songnum>1) { songnum--; } else if ((joy_pot >= (1.8/3.3)) && songnum<3){ songnum++; } // } Thread::wait(250); } } // Thread 3 // print a sin function in a small window // the value of pot 1 changes the speed of the sine wave void thread3(void const *args) { pb1.mode(PullUp); pb2.mode(PullUp); while(true) { // thread loop if (!pb2) { homescreen = true; songselect = false; } if (!pb1) { songselect = true; } Thread::wait(100); // value of pot1 / 100 } } int main() { uLCD.media_init(); uLCD.set_sector_address(0x001D, 0x4C01); uLCD.display_image(0,0); // t1.start(thread1); // t2.start(thread2); // t3.start(thread3); Thread t1(thread1); Thread t2(thread2); myled = 1; Thread t3(thread3); while(1) { Thread::wait(100); } }