en 129 / Mbed 2 deprecated F303_WAVPlayer

f303k8 wav player

Dependencies:   SDFileSystem mbed

Diff: wavPlayer.cpp

Revision:
2:203d58b06b0f
Parent:
1:7a3f34b2d18b
--- a/wavPlayer.cpp	Thu Aug 11 08:29:22 2016 +0000
+++ b/wavPlayer.cpp	Tue Nov 29 12:09:35 2016 +0000
@@ -123,6 +123,25 @@
     }
 }
 
+void wavPlayerOnDAC::rampUp(void)
+{
+    uint16_t i;
+    for(i=0;i<32768;i+=64)
+    {
+        DACout.write_u16(i);
+        wait_us(1);
+    }
+}
+void wavPlayerOnDAC::rampDown(void)
+{
+    uint16_t i;
+    for(i=0;i<32768;i+=64)
+    {
+        DACout.write_u16(32768-i);
+        wait_us(1);
+    }
+}
+
 uint8_t wavPlayerOnDAC::seaechChunk(FIL *fp,char chunk[5])
 {
     uint8_t readByteData;