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Hi again, the code above is a slightly modified version of an example program from Mr. Chassaing. My problem is the following: if I start the IRQ (11), the code between the while brackets in main function doesn't seem to run at all. What's wrong? --------------------------- //Loop_intr.c Loop program using interrupt, output=input //Comm routines and support files included in C6xdskinit.c #define buffer_length 32000 #define Get_Switches 7-((*(int *)0x90080000>>24) & 0x07) #define LED1_on *(int *)0x90080000 = 0x0E000000 #define LED2_on *(int *)0x90080000 = 0x0D000000 #define LED3_on *(int *)0x90080000 = 0x0B000000 #define LEDs_off *(int *)0x90080000 = 0x07000000 short far sample[buffer_length]; long int buffer_pos= 0; char interrupt_enable= 1; interrupt void c_int11() //interrupt service routine { int sample_data; if (interrupt_enable == 0) return; sample[buffer_pos]= sample_data= input_sample(); output_sample(sample[(buffer_pos + buffer_length/2)% buffer_length]); buffer_pos++; if (buffer_pos >= buffer_length) buffer_pos= 0; return; } void reset_samples(void) { long int i; for (i=0; i<buffer_length; i++) sample[i]= 0; } void main() { short getstate; reset_samples(); comm_intr(); // init DSK, codec, McBSP while(1) { getstate= Get_Switches; if (getstate>0) { if (getstate%1 == 0) LED1_on; if (getstate%2 == 0) LED2_on; if (getstate%4 == 0) LED3_on; } else { LEDs_off; } }; } |
Interrupts ???
Started by ●March 31, 2003
