clemente di caprio / VS1053lib

Library for VS1053 chip

Files at this revision

API Documentation at this revision

Revision 1:399afe8151de, committed 2012-05-24

Comitter:
clemente
Date:
Thu May 24 12:48:19 2012 +0000
Parent:
0:e97876f96d4b
Commit message:

Changed in this revision

VLSIcodec.c Show annotated file Show diff for this revision Revisions of this file 
--- a/VLSIcodec.c	Wed May 23 06:28:16 2012 +0000
+++ b/VLSIcodec.c	Thu May 24 12:48:19 2012 +0000
@@ -1,4 +1,4 @@
-/* mbed VLSIcodec library. To access VS1053 MPEG3 codec.
+/** mbed VLSIcodec library. To access VS1053 MPEG3 codec.
 
     Copyright (c) 2010 NXP 3790 
  
@@ -127,22 +127,35 @@
 */
 #define cVS1053_CS_DELAY        50
 
+/** VS1053Codec
+*/
 VS1053Codec::VS1053Codec(  PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dreq, PinName rst, PinName xdcs) : _spi( mosi, miso, sclk), _cs( cs), _dreq( dreq), _rst( rst), _xdcs( xdcs) {
     // defaults params
     VS1053_CS_DISABLE;
     VS1053_XDCS_DISABLE;
 }
 
+/** Wait untile the dreq is released
+* @param none
+* @retval none
+*/
 void VS1053Codec::testdreq( void){
     while( !_dreq);
 }
-    
+   
+/** Put the VS1053 in low power mode (RESET)
+* 
+* @param none
+* @retval none
+*/ 
 void VS1053Codec::lowpower( void)
 {
     VS1053_RST_ENABLE;
     wait_ms( 10);
 }
 
+/** Initialize the VS1053
+*/
 void VS1053Codec::init(void)
 {
     //
@@ -313,26 +326,26 @@
 #ifdef __PLUGINGA    
 void VS1053Codec::readgavalue( unsigned char *currval, unsigned char *peak)
 {
-	writereg( VLSI_WRAMADDR, cBASE+2);
-	unsigned short bands = (unsigned short)readreg( VLSI_WRAM);
-	//
-	writereg( VLSI_WRAMADDR, cBASE+4);
-	//
-	for (int i=0;i<bands;i++) {
-		short pv = readreg( VLSI_WRAM); 
-		/* current value in bits 5..0, normally 0..31
-		peak value in bits 11..6, normally 0..31 */
-		currval[i]=(unsigned char)(pv&0x003F);
-		peak[i]=(unsigned char)( (pv>>6)&0x003F);
-	}
+    writereg( VLSI_WRAMADDR, cBASE+2);
+    unsigned short bands = (unsigned short)readreg( VLSI_WRAM);
+    //
+    writereg( VLSI_WRAMADDR, cBASE+4);
+    //
+    for (int i=0;i<bands;i++) {
+        short pv = readreg( VLSI_WRAM); 
+        /* current value in bits 5..0, normally 0..31
+        peak value in bits 11..6, normally 0..31 */
+        currval[i]=(unsigned char)(pv&0x003F);
+        peak[i]=(unsigned char)( (pv>>6)&0x003F);
+    }
 }
 
 unsigned short VS1053Codec::readgabands( void)
 {
-	writereg( VLSI_WRAMADDR, cBASE+2);
-	unsigned short bands = (unsigned short)readreg( VLSI_WRAM);
-	/* */
-	return bands;
+    writereg( VLSI_WRAMADDR, cBASE+2);
+    unsigned short bands = (unsigned short)readreg( VLSI_WRAM);
+    /* */
+    return bands;
 }
 
 #endif