int main(void) {
static int hid_res = 0;
hid.connect(); // do not block
//Fill the report
for(int i = 0; i < 64; i++)
send_report.data[i] = i;
send_report.length = 64;
tic.attach(tic_handler, 0.1);
while (1)
{
if (hid.readNB(&recv_report))
{
read_res++;
send_report.data[1] = hid_res;
}
wait_ms(1);
}
}
void tic_handler() {
send_report.data[2] = counter++;
send_res = hid.send(&send_report);
}
int main()
{
Ticker Sample_Period; // Is this some sort of timer interrupt?
send_report.length = 8; // Data length for USB-HID communication.
char buffer[DATABITS];
int bindex = 0;
int played = 0;
float Anote = 440.0;
float Bnote = 493.9;
float Cnote = 523.3;
float Dnote = 587.3;
for(int k=0; k<128; k++)
{
// Scale wave from 0.0 to 1.0 - needed for AnalogOut argument.
Analog_out_data[k]=((1.0 + sin((float(k)/128.0*6.28318530717958)))/2.0);
}
while(1)
{
if (hid.readNB(&recv_report)) // Try to get USB-HID data from computer.
{
for(int i = 0; i < recv_report.length; i++)
{
buffer[i] = recv_report.data[i];
if (buffer[i] == 'A' || buffer[i] == 'a' || buffer[i] == 'B' || buffer[i] == 'b' || buffer[i] == 'C' || buffer[i] == 'c' || buffer[i] == 'D' || buffer[i] == 'd')
played++;
}
// Send the number of notes played.
for (int i = 1; i < send_report.length; i++) send_report.data[i] = 0;
send_report.data[0] = played & 0xff;
hid.send(&send_report);
played = 0;
}
for (bindex = 0; bindex < DATABITS; bindex++)
{
switch(buffer[bindex])
{
case 'A': case 'a':
Sample_Period.attach(&Sample_timer_interrupt, 1.0/(Anote*128));
wait(DELAY);
Sample_Period.detach();
break;
case 'B': case 'b':
Sample_Period.attach(&Sample_timer_interrupt, 1.0/(Bnote*128));
wait(DELAY);
Sample_Period.detach();
break;
case 'C': case 'c':
Sample_Period.attach(&Sample_timer_interrupt, 1.0/(Cnote*128));
wait(DELAY);
Sample_Period.detach();
break;
case 'D': case 'd':
Sample_Period.attach(&Sample_timer_interrupt, 1.0/(Dnote*128));
wait(DELAY);
Sample_Period.detach();
break;
default: break;
}
wait(0.02);
}
Sample_Period.detach();
pc.printf("Notes played: %d. \r\n", played);
wait(0.1);
for (bindex = 0; bindex < DATABITS; bindex++) buffer[bindex] = '0';
}
}
