![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
Lab4
Dependencies: USBHost mbed wave_player_appbd
Fork of AppBoard_Waveplayer by
main.cpp
- Committer:
- psahay
- Date:
- 2015-03-03
- Revision:
- 11:84161ded6baf
- Parent:
- 10:c8246ac91533
- Child:
- 12:67b9ed2c6e4f
File content as of revision 11:84161ded6baf:
#include "mbed.h" #include "USBHostMSD.h" #include "wave_player.h" #include "rtos.h" //mbed Application board waveplayer demo //Plays the wave file "sample.wav" on the USB flash drive //Outputs to onboard speaker (but at very low volume) //and the Audio Out jack for connection to a set of amplified PC speakers (at higher volume) //Needs a USB flash drive inserted with the wav file on it to run //Analog Out Jack AnalogOut DACout(p18); //On Board Speaker PwmOut PWMout(p26); wave_player waver(&DACout,&PWMout); void playwav(void const *args) { File *wave_file; wave_file=fopen((const char *)args,"r"); waver.play(wave_file); fclose(wave_file); } int main() { USBHostMSD msd("usb"); //setup PWM hardware for a Class D style audio output PWMout.period(1.0/400000.0); printf("\n\n\nHello, wave world!\n"); // wait until connected to a USB device while(!msd.connect()) { Thread::wait(500); } //open wav file and play it Thread thread(playwav,(void *)"/usb/wav3.wav"); //end of program Thread::wait(10); waver.stop = true; while(1) {}; }