Cleaning files

1 files changed, 73 insertions, 78 deletions

diff --git a/lab3/RTDSP/intio.c b/lab3/RTDSP/intio.c
index 7c33ee8..4ee527a 100644
--- a/lab3/RTDSP/intio.c
+++ b/lab3/RTDSP/intio.c
@@ -1,32 +1,32 @@
 /*************************************************************************************
-			       DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
-					   		     IMPERIAL COLLEGE LONDON 
+                   DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
+                                    IMPERIAL COLLEGE LONDON
 
- 				      EE 3.19: Real Time Digital Signal Processing
-					       Dr Paul Mitcheson and Daniel Harvey
+                       EE 3.19: Real Time Digital Signal Processing
+                           Dr Paul Mitcheson and Daniel Harvey
 
-				        		  LAB 3: Interrupt I/O
+                                  LAB 3: Interrupt I/O
 
- 				            ********* I N T I O. C **********
+                             ********* I N T I O. C **********
 
-  Demonstrates inputing and outputing data from the DSK's audio port using interrupts. 
+  Demonstrates inputing and outputing data from the DSK's audio port using interrupts.
 
  *************************************************************************************
- 				Updated for use on 6713 DSK by Danny Harvey: May-Aug 2006
-				Updated for CCS V4 Sept 10
+                 Updated for use on 6713 DSK by Danny Harvey: May-Aug 2006
+                Updated for CCS V4 Sept 10
  ************************************************************************************/
 /*
- *	You should modify the code so that interrupts are used to service the 
+ *    You should modify the code so that interrupts are used to service the
  *  audio port.
  */
 /**************************** Pre-processor statements ******************************/
 
 #include <stdlib.h>
-//  Included so program can make use of DSP/BIOS configuration tool.  
+//  Included so program can make use of DSP/BIOS configuration tool.
 #include "dsp_bios_cfg.h"
 
-/* The file dsk6713.h must be included in every program that uses the BSL.  This 
-   example also includes dsk6713_aic23.h because it uses the 
+/* The file dsk6713.h must be included in every program that uses the BSL.  This
+   example also includes dsk6713_aic23.h because it uses the
    AIC23 codec module (audio interface). */
 #include "dsk6713.h"
 #include "dsk6713_aic23.h"
@@ -40,17 +40,17 @@
 // Some functions to help with configuring hardware
 #include "helper_functions_polling.h"
 
-// PI defined here for use in your code 
+// PI defined here for use in your code
 #define PI 3.141592653589793
 
 /******************************* Global declarations ********************************/
 
-/* Audio port configuration settings: these values set registers in the AIC23 audio 
+/* Audio port configuration settings: these values set registers in the AIC23 audio
    interface to configure it. See TI doc SLWS106D 3-3 to 3-10 for more info. */
 DSK6713_AIC23_Config Config = { \
-			 /**********************************************************************/
-			 /*   REGISTER	            FUNCTION			      SETTINGS         */ 
-			 /**********************************************************************/\
+             /**********************************************************************/
+             /*   REGISTER                FUNCTION                  SETTINGS         */
+             /**********************************************************************/\
     0x0017,  /* 0 LEFTINVOL  Left line input channel volume  0dB                   */\
     0x0017,  /* 1 RIGHTINVOL Right line input channel volume 0dB                   */\
     0x01f9,  /* 2 LEFTHPVOL  Left channel headphone volume   0dB                   */\
@@ -61,19 +61,19 @@ DSK6713_AIC23_Config Config = { \
     0x0043,  /* 7 DIGIF      Digital audio interface format  16 bit                */\
     0x008d,  /* 8 SAMPLERATE Sample rate control             8 KHZ                 */\
     0x0001   /* 9 DIGACT     Digital interface activation    On                    */\
-			 /**********************************************************************/
+             /**********************************************************************/
 };
 
 
-// Codec handle:- a variable used to identify audio interface  
+// Codec handle:- a variable used to identify audio interface
 DSK6713_AIC23_CodecHandle H_Codec;
 
 
 /* Sampling frequency in HZ. Must only be set to 8000, 16000, 24000
-32000, 44100 (CD standard), 48000 or 96000  */ 
+32000, 44100 (CD standard), 48000 or 96000  */
 int sampling_freq = 16000;
 
-/* Use this variable in your code to set the frequency of your sine wave 
+/* Use this variable in your code to set the frequency of your sine wave
    be carefull that you do not set it above the current nyquist frequency! */
 float sine_freq = 2000.0;
 
@@ -90,104 +90,99 @@ Int32 R_Gain = 2100000000;
 unsigned sine_phase_ind = 0;
 
  /******************************* Function prototypes ********************************/
-void init_hardware(void);     
-void init_HWI(void); 
+void init_hardware(void);
+void init_HWI(void);
 float sinegen(void);
 void ISR_AIC(void);
 void sine_init(void);
 /********************************** Main routine ************************************/
 void main(){
-
-	// initialize board and the audio port
+    // initialize board and the audio port
     init_hardware();
 
-  	sine_init();
-  	/* initialize hardware interrupts */
-  	init_HWI();
-
-  	/* loop indefinitely, waiting for interrupts */  					
-  	while(1) {
-  	
-  	};
+    sine_init();
+    /* initialize hardware interrupts */
+    init_HWI();
 
+    /* loop indefinitely, waiting for interrupts */
+    while(1) {};
 }
-        
-/********************************** init_hardware() **********************************/  
+
+/********************************** init_hardware() **********************************/
 void init_hardware()
 {
-    // Initialize the board support library, must be called first 
+    // Initialize the board support library, must be called first
     DSK6713_init();
-    
-    // Start the AIC23 codec using the settings defined above in config 
+
+    // Start the AIC23 codec using the settings defined above in config
     H_Codec = DSK6713_AIC23_openCodec(0, &Config);
 
-	/* Function below sets the number of bits in word used by MSBSP (serial port) for 
-	receives from AIC23 (audio port). We are using a 32 bit packet containing two 
-	16 bit numbers hence 32BIT is set for  receive */
-	MCBSP_FSETS(RCR1, RWDLEN1, 32BIT);	
+    /* Function below sets the number of bits in word used by MSBSP (serial port) for
+    receives from AIC23 (audio port). We are using a 32 bit packet containing two
+    16 bit numbers hence 32BIT is set for  receive */
+    MCBSP_FSETS(RCR1, RWDLEN1, 32BIT);
 
-	/* Configures interrupt to activate on each consecutive available 32 bits 
-	from Audio port hence an interrupt is generated for each L & R sample pair */	
-	MCBSP_FSETS(SPCR1, RINTM, FRM);
+    /* Configures interrupt to activate on each consecutive available 32 bits
+    from Audio port hence an interrupt is generated for each L & R sample pair */
+    MCBSP_FSETS(SPCR1, RINTM, FRM);
 
-	/* These commands do the same thing as above but applied to data transfers to  
-	the audio port */
-	MCBSP_FSETS(XCR1, XWDLEN1, 32BIT);	
-	MCBSP_FSETS(SPCR1, XINTM, FRM);
+    /* These commands do the same thing as above but applied to data transfers to
+    the audio port */
+    MCBSP_FSETS(XCR1, XWDLEN1, 32BIT);
+    MCBSP_FSETS(SPCR1, XINTM, FRM);
 }
 
-/********************************** init_HWI() **************************************/  
+/********************************** init_HWI() **************************************/
 void init_HWI(void)
 {
-	IRQ_globalDisable();			// Globally disables interrupts
-	IRQ_nmiEnable();				// Enables the NMI interrupt (used by the debugger)
-	IRQ_map(IRQ_EVT_XINT1,4);		// Maps an event to a physical interrupt
-	IRQ_enable(IRQ_EVT_XINT1);		// Enables the event
-	IRQ_globalEnable();				// Globally enables interrupts
-
-} 
+    IRQ_globalDisable();            // Globally disables interrupts
+    IRQ_nmiEnable();                // Enables the NMI interrupt (used by the debugger)
+    IRQ_map(IRQ_EVT_XINT1,4);        // Maps an event to a physical interrupt
+    IRQ_enable(IRQ_EVT_XINT1);        // Enables the event
+    IRQ_globalEnable();                // Globally enables interrupts
+}
 
 //Populates the table with appropriate sine values
 void sine_init(void)
 {
-	int i;
-	for(i = 0; i < SINE_TABLE_SIZE; i++)
-	{
-		table[i] = sin(2 * PI * i / SINE_TABLE_SIZE);
-	}
+    int i;
+    for(i = 0; i < SINE_TABLE_SIZE; i++)
+    {
+        table[i] = sin(2 * PI * i / SINE_TABLE_SIZE);
+    }
 }
 
 //Returns the sample according to the sampling frequency
 float sinegen(void)
 {
-	unsigned sample_index = sine_phase_ind * sine_freq * SINE_TABLE_SIZE / sampling_freq;
-	sample_index = sample_index % SINE_TABLE_SIZE;
-	sine_phase_ind++;
-	return table[sample_index];
+    unsigned sample_index = sine_phase_ind * sine_freq * SINE_TABLE_SIZE / sampling_freq;
+    sample_index = sample_index % SINE_TABLE_SIZE;
+    sine_phase_ind++;
+    return table[sample_index];
 }
 
-/******************** INTERRUPT SERVICE ROUTINE ***********************/  
+/******************** INTERRUPT SERVICE ROUTINE ***********************/
 
 /********************************** Ex2 ***************************************/
 void ISR_AIC(void)
 {
-	// temporary variable used to output values from function
-	float wave_out, wave;
-	sine_phase_ind = sine_phase_ind % sampling_freq;
-	wave = sinegen();
-	wave_out = wave < 0 ? wave : -wave;
+    // temporary variable used to output values from function
+    float wave_out, wave;
+    sine_phase_ind = sine_phase_ind % sampling_freq;
+    wave = sinegen();
+    wave_out = wave < 0 ? wave : -wave;
 
-	mono_write_16Bit((short)(wave_out*32767));
+    mono_write_16Bit((short)(wave_out*32767));
 }
 
 
 /********************************** Ex1 ***************************************/
 /*void ISR_AIC()
 {
-	short mono_out, mono_in;
-	mono_in = mono_read_16Bit();
-	mono_out = mono_in; //mono_in < 0 ? -mono_in : mono_in;
-	mono_write_16Bit(mono_out);
+    short mono_out, mono_in;
+    mono_in = mono_read_16Bit();
+    mono_out = mono_in; //mono_in < 0 ? -mono_in : mono_in;
+    mono_write_16Bit(mono_out);
 }
 */