Luke Cartwright
/
ELEC2645_Project_el18loc_nearlythere
Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Diff: Sound/Sound.cpp
- Revision:
- 14:9cfe0041cc4e
- Child:
- 15:1c67f064278e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Sound/Sound.cpp Tue May 19 15:04:33 2020 +0000
@@ -0,0 +1,44 @@
+#include "Sound.h"
+
+//Global Variables
+volatile extern uint16_t sin_wavtable[1024];
+volatile extern uint16_t tri_wavtable[1024];
+volatile extern uint16_t pulse_wavtable[1024];
+
+//Constructor/Destructor
+Sound::Sound()
+{
+}
+Sound::~Sound()
+{
+}
+
+//PUBLIC:-----------------------------------------------------------------------
+
+uint16_t Sound::sound_main(bool initial, int waveform, int frequency)
+{
+ if (initial==true) {
+ i=0;
+ return(i);
+ }
+ i=wavetable_itt(i,frequency);
+ if (waveform==1) {
+ #ifdef SLOW_TIME
+ printf("SIN_wavtable[%u]=",i)
+ #endif
+ return (sin_wavtable[i]);
+ }
+ return(0);
+}
+
+//PRIVATE:----------------------------------------------------------------------
+uint16_t Sound::wavetable_itt(uint16_t i, int frequency)
+{
+ i_d = i + ((1024*frequency)/4000); //i+((samples*f)*Ts)
+ i=ceil(i_d); //ROUND IN FUTURE*************
+
+ if (i>=1024) {
+ i=i-1024;
+ }
+ return(i);
+}
\ No newline at end of file