Diff: main.cpp

Revision:

0:2bfb84d07f90

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Jun 11 05:42:07 2016 +0000
@@ -0,0 +1,97 @@
+#include "unzen.h"          // audio framework include file
+#include "umb_adau1361a.h"     // audio codec contoler include file
+#include "mbed.h"
+
+#define CODEC_I2C_ADDR 0x38
+
+    // for debug
+DigitalOut myled1(LED1);
+
+
+
+    // customer signal processing initialization call back.
+void init_callback(
+            unsigned int block_size     // block size [sample]
+            )
+{
+        // place initialization code here
+}
+
+
+    // customer signal processing call back.
+void process_callback(
+            float rx_left_buffer[],     // array of the left input samples
+            float rx_right_buffer[],    // array of the right input samples
+            float tx_left_buffer[],     // place to write the left output samples
+            float tx_right_buffer[],    // place to write the left output samples
+            unsigned int block_size     // block size [sample]
+            )
+{
+        // Sample processing
+    for ( int i=0; i<block_size; i++)   // for all sample
+    {
+        tx_left_buffer[i] = rx_left_buffer[i];      // copy from input to output
+        tx_right_buffer[i] = rx_right_buffer[i];
+        
+    }
+}
+
+
+int main() 
+{    
+        // I2C is essential to talk with ADAU1361
+    I2C i2c(p32, p31);  // SDA, SDC of LPC4088 I2C0
+
+        // create an audio codec contoler
+    shimabara::UMB_ADAU1361A codec(shimabara::Fs_32, i2c, CODEC_I2C_ADDR ); // 
+//    shimabara::UMB_ADAU1361A codec(shimabara::Fs_441, i2c, CODEC_I2C_ADDR );
+//    shimabara::UMB_ADAU1361A codec(shimabara::Fs_48, i2c, CODEC_I2C_ADDR );
+//    shimabara::UMB_ADAU1361A codec(shimabara::Fs_96, i2c, CODEC_I2C_ADDR );
+
+       // create an audio framework by singlton pattern
+    unzen::Framework audio;
+ 
+         /* Set I3C clock to 100kHz*/
+    i2c.frequency( 100000 );
+
+
+        /* Configure the optional block size of signal processing. By default, it is 1[Sample] */ 
+//    audio.set_block_size(4);
+
+        /* for debug. Optional pre/post call backs. This block can be removed in the real application */
+
+//    audio.set_pre_interrupt_callback(pre_int);
+//    audio.set_post_interrupt_callback(post_int);
+//    audio.set_pre_process_callback(pre_proc);
+//    audio.set_post_process_callback(post_proc);
+
+
+    
+        /* Start the ADAU1361. Audio codec starts to generate the I2C signals  */
+   codec.start();
+
+        /* Start the audio framework on ARM processor.  */ 
+   audio.start( init_callback, process_callback);     // path the initializaiton and process call back to framework 
+
+   
+    
+    codec.set_hp_output_gain( 0, 0 );
+    
+    while(1)     
+    {
+        for ( int i=-15; i<4; i++ )
+        {
+            codec.set_hp_output_gain( i, i );
+            codec.set_line_output_gain( i, i );
+            myled1 = 1;
+            wait(0.25);
+            myled1 = 0;
+            wait(0.25);
+         }
+    }
+}
+
+
+
+//*************** debug functions ******************
+