Diff: VS1053t.cpp

Revision:

0:d421471bef92

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VS1053t.cpp	Mon Mar 19 12:08:44 2012 +0000
@@ -0,0 +1,50 @@
+/* mbed VLSI VS1053t library
+ *
+ * Thread based VS1053 class inherited by VS1053b
+ *
+ */
+
+
+#include "mbed.h"
+#include "rtos.h"
+
+#include "defines.h"
+#include "VS1053t.h"
+
+VS1053t :: VS1053t(
+    PinName mosi, PinName miso, PinName sck,
+    PinName cs, PinName rst, PinName dreq, PinName dcs,
+    char*   buffer, int  buffer_size, bool thread 
+    ):
+    
+    VS1053( mosi, miso, sck, cs, rst, dreq, dcs,
+            buffer, buffer_size)
+{   }
+
+Semaphore lock_buff(1) ;
+
+unsigned int VS1053t::waitBuffer(unsigned int size, uint32_t time) {
+    int n ;
+    WaitingSize = size ;
+    while ((n = VS1053t::bufferFree()) < size) {
+        if(thread)
+            lock_buff.wait(time) ;
+        else
+            wait_ms(100) ;
+    }
+    // if(n < size) { time out
+    return(n) ;
+}
+
+unsigned char VS1053t::bufferGetByte(void) {
+    unsigned char retVal = 0x00;
+    if (bufferCount() > 0x00) {
+        retVal = *_bufferReadPointer++;
+        if (_bufferReadPointer >= _buffer + BUFFER_SIZE) {
+            _bufferReadPointer = _buffer;
+        }
+    }
+    if (thread && (VS1053t::bufferFree() >= WaitingSize))
+        lock_buff.release() ;
+    return retVal;
+}