Running multiple threads on mbed using RTOS
Dependencies: 4DGL-uLCD-SE SDFileSystem mbed-rtos mbed wave_player_appbd
main.cpp@2:f4ad69c44c7e, 2016-02-28 (annotated)
- Committer:
- wschon
- Date:
- Sun Feb 28 23:25:52 2016 +0000
- Revision:
- 2:f4ad69c44c7e
- Parent:
- 1:2129bb91c172
- Child:
- 3:7d53a2744a2b
added wave player thread;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
wschon | 0:fdcdbc5499f7 | 1 | #include "mbed.h" |
wschon | 0:fdcdbc5499f7 | 2 | #include "rtos.h" |
wschon | 0:fdcdbc5499f7 | 3 | #include "uLCD_4DGL.h" |
wschon | 0:fdcdbc5499f7 | 4 | #include "SDFileSystem.h" |
wschon | 1:2129bb91c172 | 5 | #include "USBHostMSD.h" |
wschon | 2:f4ad69c44c7e | 6 | #include "wave_player.h" |
wschon | 0:fdcdbc5499f7 | 7 | |
wschon | 0:fdcdbc5499f7 | 8 | SDFileSystem sd(p5, p6, p7, p8, "sd"); |
wschon | 0:fdcdbc5499f7 | 9 | Serial pc(USBTX, USBRX); |
wschon | 0:fdcdbc5499f7 | 10 | Mutex ulcd_mutex; |
wschon | 0:fdcdbc5499f7 | 11 | uLCD_4DGL uLCD(p9,p10,p11); // serial tx, serial rx, reset pin; |
wschon | 0:fdcdbc5499f7 | 12 | DigitalOut myled(LED1); |
wschon | 2:f4ad69c44c7e | 13 | //Analog Out Jack |
wschon | 2:f4ad69c44c7e | 14 | AnalogOut DACout(p18); |
wschon | 2:f4ad69c44c7e | 15 | //On Board Speaker |
wschon | 2:f4ad69c44c7e | 16 | PwmOut PWMout(p21); |
wschon | 2:f4ad69c44c7e | 17 | wave_player waver(&DACout,&PWMout); |
wschon | 2:f4ad69c44c7e | 18 | int playing = 1; |
wschon | 2:f4ad69c44c7e | 19 | |
wschon | 0:fdcdbc5499f7 | 20 | |
wschon | 0:fdcdbc5499f7 | 21 | void ulcd2_thread(void const *args) { |
wschon | 1:2129bb91c172 | 22 | int count = 0; |
wschon | 0:fdcdbc5499f7 | 23 | while(true) { |
wschon | 0:fdcdbc5499f7 | 24 | ulcd_mutex.lock(); |
wschon | 0:fdcdbc5499f7 | 25 | pc.printf("Activated mutex lock on uLCD screen: ulcd2_thread"); |
wschon | 0:fdcdbc5499f7 | 26 | uLCD.cls(); |
wschon | 0:fdcdbc5499f7 | 27 | uLCD.printf("\nECE 4180 L3: RTOS\n"); //Default Green on black text |
wschon | 0:fdcdbc5499f7 | 28 | uLCD.printf("\nWes Schon Nick Liu"); |
wschon | 1:2129bb91c172 | 29 | uLCD.printf("\n\nThread 2 count: %d", count); |
wschon | 2:f4ad69c44c7e | 30 | if (playing == 1) |
wschon | 2:f4ad69c44c7e | 31 | uLCD.printf("\n\nPlaying wav file..."); |
wschon | 2:f4ad69c44c7e | 32 | else |
wschon | 2:f4ad69c44c7e | 33 | uLCD.printf("\n\nWav file finished."); |
wschon | 0:fdcdbc5499f7 | 34 | uLCD.text_width(4); //4X size text |
wschon | 0:fdcdbc5499f7 | 35 | uLCD.text_height(4); |
wschon | 0:fdcdbc5499f7 | 36 | Thread::wait(3000); |
wschon | 0:fdcdbc5499f7 | 37 | ulcd_mutex.unlock(); |
wschon | 1:2129bb91c172 | 38 | count++; |
wschon | 0:fdcdbc5499f7 | 39 | } |
wschon | 0:fdcdbc5499f7 | 40 | } |
wschon | 2:f4ad69c44c7e | 41 | void wav_thread(void const *args) { |
wschon | 2:f4ad69c44c7e | 42 | USBHostMSD msd("usb"); |
wschon | 2:f4ad69c44c7e | 43 | FILE *wave_file; |
wschon | 2:f4ad69c44c7e | 44 | //setup PWM hardware for a Class D style audio output |
wschon | 2:f4ad69c44c7e | 45 | PWMout.period(1.0/400000.0); |
wschon | 2:f4ad69c44c7e | 46 | //printf("\n\n\nHello, wave world!\n"); |
wschon | 2:f4ad69c44c7e | 47 | // wait until connected to a USB device |
wschon | 2:f4ad69c44c7e | 48 | while(!msd.connect()) { |
wschon | 2:f4ad69c44c7e | 49 | Thread::wait(500); |
wschon | 2:f4ad69c44c7e | 50 | } |
wschon | 2:f4ad69c44c7e | 51 | //open wav file and play it |
wschon | 2:f4ad69c44c7e | 52 | wave_file=fopen("/usb/sample.wav","r"); |
wschon | 2:f4ad69c44c7e | 53 | waver.play(wave_file); |
wschon | 2:f4ad69c44c7e | 54 | fclose(wave_file); |
wschon | 2:f4ad69c44c7e | 55 | //end of program |
wschon | 2:f4ad69c44c7e | 56 | Thread::wait(500); |
wschon | 2:f4ad69c44c7e | 57 | playing = 0; |
wschon | 2:f4ad69c44c7e | 58 | } |
wschon | 2:f4ad69c44c7e | 59 | |
wschon | 2:f4ad69c44c7e | 60 | void led_thread(void const *args) { |
wschon | 2:f4ad69c44c7e | 61 | |
wschon | 2:f4ad69c44c7e | 62 | } |
wschon | 0:fdcdbc5499f7 | 63 | |
wschon | 0:fdcdbc5499f7 | 64 | int main() { |
wschon | 0:fdcdbc5499f7 | 65 | Thread thread(ulcd2_thread); |
wschon | 2:f4ad69c44c7e | 66 | Thread thread2(wav_thread); |
wschon | 1:2129bb91c172 | 67 | int count2 = 0; |
wschon | 0:fdcdbc5499f7 | 68 | while(1) { |
wschon | 0:fdcdbc5499f7 | 69 | myled = 1; |
wschon | 0:fdcdbc5499f7 | 70 | Thread::wait(200); |
wschon | 0:fdcdbc5499f7 | 71 | myled = 0; |
wschon | 0:fdcdbc5499f7 | 72 | Thread::wait(200); |
wschon | 0:fdcdbc5499f7 | 73 | ulcd_mutex.lock(); |
wschon | 0:fdcdbc5499f7 | 74 | uLCD.cls(); |
wschon | 0:fdcdbc5499f7 | 75 | //SD card needed with image and video files for last two demos |
wschon | 0:fdcdbc5499f7 | 76 | uLCD.cls(); |
wschon | 0:fdcdbc5499f7 | 77 | uLCD.media_init(); |
wschon | 1:2129bb91c172 | 78 | uLCD.printf("\n\nThread 1 count: %d", count2); |
wschon | 2:f4ad69c44c7e | 79 | if (playing == 1) |
wschon | 2:f4ad69c44c7e | 80 | uLCD.printf("\n\nPlaying wav file..."); |
wschon | 2:f4ad69c44c7e | 81 | else |
wschon | 2:f4ad69c44c7e | 82 | uLCD.printf("\n\nWav file finished."); |
wschon | 1:2129bb91c172 | 83 | Thread::wait(200); |
wschon | 0:fdcdbc5499f7 | 84 | uLCD.set_sector_address(0x0000, 0x0000); |
wschon | 0:fdcdbc5499f7 | 85 | uLCD.display_video(0,0); |
wschon | 1:2129bb91c172 | 86 | Thread::wait(100); |
wschon | 0:fdcdbc5499f7 | 87 | ulcd_mutex.unlock(); |
wschon | 1:2129bb91c172 | 88 | count2++; |
wschon | 0:fdcdbc5499f7 | 89 | } |
wschon | 0:fdcdbc5499f7 | 90 | } |