Lab 4 part 1

3 files changed, 333 insertions, 0 deletions

diff --git a/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/50befd98d80100181ce89bcacea45786 b/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/50befd98d80100181ce89bcacea45786
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+/*   Do *not* directly modify this file.  It was    */
+/*   generated by the Configuration Tool; any  */
+/*   changes risk being overwritten.                */
+
+/* INPUT dsp_bios_.cdb */
+
+/*  Include Header Files  */
+#include <std.h>
+#include <hst.h>
+#include <swi.h>
+#include <tsk.h>
+#include <log.h>
+#include <sts.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern far HST_Obj RTA_fromHost;
+extern far HST_Obj RTA_toHost;
+extern far SWI_Obj KNL_swi;
+extern far TSK_Obj TSK_idle;
+extern far LOG_Obj LOG_system;
+extern far STS_Obj IDL_busyObj;
+
+
+#ifdef __cplusplus
+}
+#endif /* extern "C" */
diff --git a/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/a09e5355d70100181ce89bcacea45786 b/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/a09e5355d70100181ce89bcacea45786
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+/*************************************************************************************
+                   DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
+                                    IMPERIAL COLLEGE LONDON
+
+                       EE 3.19: Real Time Digital Signal Processing
+                           Dr Paul Mitcheson and Daniel Harvey
+
+                                  LAB 3: Interrupt I/O
+
+                             ********* I N T I O. C **********
+
+  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
+ ************************************************************************************/
+/*
+ *    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.
+#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
+   AIC23 codec module (audio interface). */
+#include "dsk6713.h"
+#include "dsk6713_aic23.h"
+
+// math library (trig functions)
+#include <math.h>
+
+// Some functions to help with writing/reading the audio ports when using interrupts.
+#include <helper_functions_ISR.h>
+
+// Some functions to help with configuring hardware
+#include "helper_functions_polling.h"
+
+// PI defined here for use in your code
+#define PI 3.141592653589793
+
+// Table size
+#define SINE_TABLE_SIZE 256
+
+/******************************* Global declarations ********************************/
+
+/* 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         */
+             /**********************************************************************/\
+    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                   */\
+    0x01f9,  /* 3 RIGHTHPVOL Right channel headphone volume  0dB                   */\
+    0x0011,  /* 4 ANAPATH    Analog audio path control       DAC on, Mic boost 20dB*/\
+    0x0000,  /* 5 DIGPATH    Digital audio path control      All Filters off       */\
+    0x0000,  /* 6 DPOWERDOWN Power down control              All Hardware on       */\
+    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
+DSK6713_AIC23_CodecHandle H_Codec;
+
+
+/* Sampling frequency in HZ. Must only be set to 8000, 16000, 24000
+32000, 44100 (CD standard), 48000 or 96000  */
+int sampling_freq = 8000;
+
+/* 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 = 1000.0;
+
+// Declares the global sine table that will be used to generate the sine wave
+float table[SINE_TABLE_SIZE];
+
+// Current index in the table, that can be used to calculate the next index
+int sine_index = 0;
+
+ /******************************* Function prototypes ********************************/
+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
+    init_hardware();
+
+	// initialize the sine wave
+    sine_init();
+
+    /* initialize hardware interrupts */
+    init_HWI();
+
+    /* loop indefinitely, waiting for interrupts */
+    while(1) {};
+}
+
+/********************************** init_hardware() **********************************/
+void init_hardware()
+{
+    // Initialize the board support library, must be called first
+    DSK6713_init();
+
+    // 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);
+
+    /* 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);
+}
+
+/********************************** init_HWI() **************************************/
+void init_HWI()
+{
+    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()
+{
+    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()
+{
+    unsigned sample_index = sine_index * sine_freq * SINE_TABLE_SIZE / sampling_freq;
+    sample_index %= SINE_TABLE_SIZE;
+    sine_index++;
+    return table[sample_index];
+}
+
+/******************** INTERRUPT SERVICE ROUTINE ***********************/
+void ISR_AIC()
+{
+    // temporary variable used to output values from function
+    float wave_out, wave;
+
+    wave = sinegen();
+    wave_out = wave < 0 ? wave : -wave;
+
+    mono_write_16Bit((short)(wave_out*32767));
+}
diff --git a/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/b07cc7d3d80100181ce89bcacea45786 b/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/b07cc7d3d80100181ce89bcacea45786
new file mode 100644
index 0000000..e63485b
--- /dev/null
+++ b/lab4/.metadata/.plugins/org.eclipse.core.resources/.history/62/b07cc7d3d80100181ce89bcacea45786
@@ -0,0 +1,131 @@
+/*************************************************************************************
+                   DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
+                                    IMPERIAL COLLEGE LONDON
+
+                       EE 3.19: Real Time Digital Signal Processing
+                           Dr Paul Mitcheson and Daniel Harvey
+
+                                  LAB 3: Interrupt I/O
+
+                             ********* I N T I O. C **********
+
+  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
+ ************************************************************************************/
+/*
+ *    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.
+#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
+   AIC23 codec module (audio interface). */
+#include "dsk6713.h"
+#include "dsk6713_aic23.h"
+
+// math library (trig functions)
+#include <math.h>
+
+// Some functions to help with writing/reading the audio ports when using interrupts.
+#include <helper_functions_ISR.h>
+#include "Matlab/filter_coeff.txt"
+// Some functions to help with configuring hardware
+#include "helper_functions_polling.h"
+
+
+// PI defined here for use in your code
+#define PI 3.141592653589793
+#define N 12
+double x[N];
+
+/******************************* Global declarations ********************************/
+
+/* 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         */
+             /**********************************************************************/\
+    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                   */\
+    0x01f9,  /* 3 RIGHTHPVOL Right channel headphone volume  0dB                   */\
+    0x0011,  /* 4 ANAPATH    Analog audio path control       DAC on, Mic boost 20dB*/\
+    0x0000,  /* 5 DIGPATH    Digital audio path control      All Filters off       */\
+    0x0000,  /* 6 DPOWERDOWN Power down control              All Hardware on       */\
+    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
+DSK6713_AIC23_CodecHandle H_Codec;
+
+ /******************************* Function prototypes ********************************/
+void init_hardware(void);
+void init_HWI(void);
+void ISR_AIC(void);
+/********************************** Main routine ************************************/
+void main(){
+    // initialize board and the audio port
+    init_hardware();
+
+    /* initialize hardware interrupts */
+    init_HWI();
+
+    /* loop indefinitely, waiting for interrupts */
+    while(1) {};
+}
+
+/********************************** init_hardware() **********************************/
+void init_hardware()
+{
+    // Initialize the board support library, must be called first
+    DSK6713_init();
+
+    // 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);
+
+    /* 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);
+}
+
+/********************************** init_HWI() **************************************/
+void init_HWI()
+{
+    IRQ_globalDisable();            // Globally disables interrupts
+    IRQ_nmiEnable();                // Enables the NMI interrupt (used by the debugger)
+    IRQ_map(IRQ_EVT_RINT1,4);       // Maps an event to a physical interrupt
+    IRQ_enable(IRQ_EVT_RINT1);      // Enables the event
+    IRQ_globalEnable();             // Globally enables interrupts
+}
+
+/******************** INTERRUPT SERVICE ROUTINE ***********************/
+void ISR_AIC()
+{
+	mono_write_16Bit((short)(wave_out*32767));
+    mono_write_16Bit((short)(wave_out*32767));
+	
+	
+}