Mute and unmute audio

firmware/application/audio.cpp

@@ -26,6 +26,7 @@
 using portapack::clock_manager;
 
 #include "portapack_hal.hpp"
+#include "portapack_persistent_memory.hpp"
 
 #include "i2s.hpp"
 using namespace lpc43xx;
@@ -153,6 +154,16 @@ void unmute() {
 	audio_codec->headphone_enable();
 }
 
+void speaker_mute() {
+ 	i2s::i2s0::tx_mute();
+ 	audio_codec->speaker_disable();
+ }
+
+ void speaker_unmute() {
+ 	i2s::i2s0::tx_unmute();
+ 	audio_codec->speaker_enable();
+ }
+
 } /* namespace output */
 
 namespace input {