?? ramptable.c
字號:
//RAMPTABLE.C Generates a ramp using a look-up table
#define table_size (int)0x400 //size of table=1024
int data_table[table_size]; //data table array
int i;
interrupt void c_int11() //interrupt service routine
{
output_sample(data_table[i]); //ramp value for each Ts
if (i < table_size-1) i++; //if table size is reached
else i = 0; //reinitialize counter
return; //return from interrupt
}
main()
{
for(i=0; i < table_size; i++)
{
data_table[i] = 0x0; //clear each buffer location
data_table[i] = i * 0x20; //set to 0,32,64,96,...,32736
}
i = 0; //reinit counter
comm_intr(); //init DSK, codec, McBSP
while (1); //infinite loop
}
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