File content as of revision 11:d2099045bdc9:

/*
Big green ugly etc. Free for use bla bla bla. Do not eat.
Tested on stm32f746zg

Fast creepy transformation DAC_PWM WavePlayer SD_Card 
to usb_flash_stick PWM_Covox WavePlayer

Based on Lucy Lenhardt  wave_player_pwm_and_dac 
https://os.mbed.com/users/lenhardt/code/wave_player_pwm_and_dac/
*/

#include "mbed.h"
//#include "pinout.h"
#include "USBHostMSD.h"
#include "wave_player.h"

Serial pc(USBTX, USBRX, 115200); // tx, rx, baud rate

AnalogOut dac(PA_5);
PwmOut enb(PA_6);
wave_player player(&dac, &enb);

int main() {

USBHostMSD msd("usb");

        while(1) {
        while(!msd.connect()) {
            pc.printf("Waiting for USB\r\n");
            wait_ms(500);
        }

            pc.printf("Flash mounted\r\n");    

            FILE * fp = fopen("/usb/test1.wav", "rb");
        
            if (fp != NULL) {
                pc.printf("File opened, reading...\r\n");

                    player.play(fp);
               
            fclose(fp);
            pc.printf("File closed\r\n");


            } else {
                pc.printf("FILE == NULL\r\n");
            }
                    
            if (!msd.connected())
                break;
        }
}