![](/media/cache/profiles/9ae782e31c7b7d4fd0e7dbde03909519.jpg.50x50_q85.jpg)
Code Demonstrate most of the feature of application board/ /like LED, Speaker,RGB,Joystick,LCD,POT,Accelerometer,temperature sensor/ /by using component of real time operating system such as Mutex, Threads/ Signals,Queue and Memory pool Video at https://www.youtube.com/watch?v=c0pRzfZGfV0
Dependencies: C12832_lcd LCD_fonts LM75B MMA7660 MMA7660FC mbed-rtos mbed
main.cpp
- Committer:
- embeddednerd
- Date:
- 2014-11-02
- Revision:
- 0:9641fb66f65a
File content as of revision 0:9641fb66f65a:
/************Author embedded nerd**********************/ /*********www.embedded.zettamonk.com*******************/ /**************Free to use Lic************************/ /*************Date 28 Aug 2014***********************/ /* Code Demonstarte most of the feature of application board/ /like LED, Speaker,RGB,Joystick,LCD,POT,Accelomenter,temprature sensor/ /by using component of real time oprating system such as Mutex, Threads/ Signals,Queue and Memorypool//////////////////////////////////////////*/ /////////////////////////////////////////Header Files////////////////////// #include "mbed.h" #include "rtos.h" // real time os #include "Small_6.h" // LCD #include "Small_7.h" // LCD #include "Arial_9.h" // LCD #include "stdio.h" #include "C12832_lcd.h" // LCD #include "LM75B.h" // temprature #include "MMA7660FC.h" #include "MMA7660.h" // Axix #include <string> #define SET 1 #define RESET 0 #define ADDR_MMA7660 0x98 //// I2C SLAVE ADDR MMA7660FC /****************************Defination and Object Creation*****************************/ C12832_LCD LCD; // LCD object BusOut leds(LED1,LED2,LED3,LED4); // Led decration AnalogIn Pot1(p19); // Analog pin name decration AnalogIn Pot2(p20); // Analog pin name decration BusIn Up(p15); //Joy stick BusIn Down(p12); //Joy stick BusIn Left(p13); //Joy stick BusIn Right(p16); //Joy stick BusOut Reset(p14); //Joy stick PwmOut spkr(p26); //Speaker PwmOut r (p23); //RGB red PwmOut g (p24); //RGB green PwmOut b (p25); // RGB blue LM75B sensor(p28,p27); // I2c MMA7660FC Acc(p28, p27, ADDR_MMA7660); //sda, scl, Addr MMA7660 MMA(p28, p27); /*****************************************************************************************/ //r.period(0); // 0 1 2 3 4 5 6 7 const string display_menu[] = {" ","LED ","POT ","Temp ","Axix ","Spker","RGB ","POT2"}; // aray to display modules on LCD unsigned char oprate_menu[] = {0, 0, 0, 0, 0, 0, 0, 0}; // Store Flags for module typedef struct { float voltage; float current; uint32_t counter; } message_t; MemoryPool<message_t, 16> mpool; Queue<message_t, 16> queue; //Mutex decleration of LCD Mutex lcd_mutex; // Semaphore Declearation of Calcualtion with two slots Semaphore calculate(2); int count= 0,menu = 0; /*////////////////////// Thread led///////////////////////// Input: Output: LED if module flag is set than it will turn led on from 0X00 to 0X0F //////////////////////////////////////////////////////////*/ void led(void const *args) { char out =0; while(true) { // thread loop if (oprate_menu[1] == SET) // Checking flag for module { leds = out; // Turning LEd on out++; if(out>16) out = 0; // Reseting count } else leds = 0; // If flag not set than turn of the module Thread::wait(100); // Thread wait .1s } } // thread close /*////////////////////// Thread menu_sel///////////////////////// Input: Joustick Output: Set flag in oprate_menu By using left right key user in enable to change module and by up cown key user is able to set module on or off bye pressinf enter key //////////////////////////////////////////////////////////*/ void menu_sel(void const *args) { int k; while(true) { // thread loop //LCD.locate(0,5);LCD.printf(" "); LCD.set_font((unsigned char*) Small_7); if (Left) // Checking keys { count = 0 ; menu--; // manipulating menue number as per key response if(menu<1){ menu = 7;} // lcd_mutex.lock(); LCD.locate(50,10); LCD.printf(" %s",display_menu[menu]); // displaying menue on LCD lcd_mutex.unlock(); wait(1); } if (Right) { count = 0 ; menu++; if(menu>7) {menu = 1;} lcd_mutex.lock(); LCD.locate(50,10); LCD.printf(" %s",display_menu[menu]); lcd_mutex.unlock(); wait(1); //while(Right); } if(Up) { count = 1 ; // Manipulating flag as per selection from user LCD.set_font((unsigned char*) Small_7); lcd_mutex.lock(); LCD.locate(50,20); LCD.printf(" ON "); lcd_mutex.unlock(); } if(Down) { count = 0; LCD.set_font((unsigned char*) Small_7); lcd_mutex.lock(); LCD.locate(50,20); LCD.printf(" OFF"); lcd_mutex.unlock(); } if (Reset) { LCD.set_font((unsigned char*) Small_7); lcd_mutex.lock(); LCD.locate(50,20); LCD.printf(" "); lcd_mutex.unlock(); oprate_menu[menu] = count; //if menu = 1 thread.signal_set(0x1); } Thread::wait(10); // wait 0.5s } } /*////////////////////// Thread spk///////////////////////// Input: Output: Turn on speaker on board Turn on PWM on speaker pin for specific period of time //////////////////////////////////////////////////////////*/ void spk(void const *args) { while (1) { if (oprate_menu[5] == SET) { for (float i=2000.0; i<10000.0; i+=500) { spkr.period(1.0/i); spkr=0.5; wait(0.1);} } else {spkr.period(0); spkr=0;} Thread::wait(50); } } /*////////////////////// Thread pot///////////////////////// Input: Analog in Output: Read the analog value and manupulate it for further use //////////////////////////////////////////////////////////*/ void pot(void const *args) { int k; while(true) // thread loop { if (oprate_menu[2] == SET) { k = Pot1.read_u16(); // get the value of poti 2 k = k >> 5; // we need only 6 bit for contrast lcd_mutex.lock(); LCD.set_font((unsigned char*) Small_6); LCD.locate(0,10); LCD.printf("Pot: %d",k); lcd_mutex.unlock(); //Thread::wait(500); // wait 0.5s } else { lcd_mutex.lock(); LCD.set_font((unsigned char*) Small_6); LCD.locate(0,10); LCD.printf(" "); lcd_mutex.unlock(); } Thread::wait(50); } } /*////////////////////// Thread pot///////////////////////// Input: Output: PWM output to RGB led Pin Multicolor LED display diffrent colors as per PWM cycle in set //////////////////////////////////////////////////////////*/ void rgb(void const *args) { while(1) { if (oprate_menu[6] == SET) { r = 0.5 + (rand() % 11)/20.0; g = 0.5 + (rand() % 11)/20.0; b = 0.5 + (rand() % 11)/20.0; } else {r =.1;g=0;b=0;} Thread::wait(500); } } /*////////////////////// Thread temp///////////////////////// Input: Output: PWM output to RGB led Pin Multicolor LED display diffrent colors as per PWM cycle in set //////////////////////////////////////////////////////////*/ void temp(void const *args) { int k; while(true) // thread loop { if (oprate_menu[3] == SET) { lcd_mutex.lock(); LCD.set_font((unsigned char*) Small_6); LCD.locate(0,20); LCD.printf("Temp:%.1f", (float)sensor); lcd_mutex.unlock(); Thread::wait(50); } else { lcd_mutex.lock(); LCD.set_font((unsigned char*) Small_6); LCD.locate(0,20); LCD.printf(" "); lcd_mutex.unlock(); Thread::wait(50); } Thread::wait(50); // wait 0.5s } } /*////////////////////// Thread AXIX///////////////////////// Input: I2C data Output: Draw a circle and a buble in it. Buble move with respond to change in axix of board //////////////////////////////////////////////////////////*/ void axix(void const *args) { // Acc.init(); float x=0, y=0, z=0; while(1) { //int x=0,y=0; if (oprate_menu[4] == SET) { Acc.read_Tilt(&x, &y, &z); lcd_mutex.lock(); x = (x + MMA.x() * 32.0)/2.0; y = (y -(MMA.y() * 16.0))/2.0; // if(y>25) y = 0; //else if(y<0) y = 0; if(y>8) y =8; if(y<-8) y =-8; if(x>8) x =8; if(x<-8) x =-8; // confining LCD.fillcircle(x+115, y+17, 2, 1); //draw bubble LCD.circle(115, 17, 8, 1); wait(.1); //time delay LCD.fillcircle(x+115, y+17, 2, 0); //erase bubble lcd_mutex.unlock(); // LCD.locate(0,3); wait_ms(100); } else { lcd_mutex.lock(); LCD.circle(115, 17, 8, 0); // LCD.locate(0,3); lcd_mutex.unlock(); } Thread::wait(10); } } /*////////////////////// Memory pool example and Semaphore/////////////// Output: //////////////////////////////////////////////////////////*/ void calci(void const *args) { uint32_t i = 0; while (true) { calculate.wait(); //semaphore i = Pot2.read_u16();; i = (i>>5)/2; message_t *message = mpool.alloc(); message->voltage = (i * 3.3) / 1024; message->current = ((i * 3.3) / 2048); message->counter = i; queue.put(message); calculate.release(); Thread::wait(100000); } } // print the actual contrast int main() { int j; // r =0; b=0;g=0; LCD.cls(); LCD.set_font((unsigned char*) Small_7); LCD.locate(0,0); LCD.printf(" embedded.zettamonk.com"); /////////////////////////////Threads/////////////////// Thread t1(led); //start thread1 Thread t2(menu_sel); //start thread2 Thread t3(spk); //start thread3 Thread t4(pot); //start thread4 Thread t5(rgb); //start thread4 Thread t6(temp); //start thread4 Thread t7(axix); Thread t8(calci); Thread t9(calci); //////////////////////////////////////////////// while(true) { // main is the next thread if (oprate_menu[7] == SET) { LCD.set_font((unsigned char*) Small_7); LCD.locate(0,0); osEvent evt = queue.get(); if (evt.status == osEventMessage) { message_t *message = (message_t*)evt.value.p; lcd_mutex.lock(); LCD.printf(" V:%.2fv" , message->voltage); LCD.printf(" I:%.2fA" , message->current); LCD.printf(" R: %u ", message->counter); lcd_mutex.unlock(); mpool.free(message); // wait(.2); } else { LCD.set_font((unsigned char*) Small_7); LCD.locate(0,0); lcd_mutex.lock(); LCD.printf("embedded.zettamonk.com"); lcd_mutex.unlock(); } Thread::wait(100); // wait 0.5s } } }