Marco Perciavalle
Encoding messsages, continuously written on serial terminal, in Morse code. Resulting code is played by a buzzer. Please, use local echo on terminal for more impressive experience. To verify coded messages, there are some app for smartphone.
Fork of
Morse
by 
Romain Berrada
Diff: main.cpp
- Revision:
- 2:39d67345f7b3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Feb 03 11:45:23 2018 +0000
@@ -0,0 +1,50 @@
+#include "mbed.h"
+#include "Morse.h"
+#include "Speaker.h"
+#include "FIFO.h"
+// Global Variables
+float SpeakerFreq = 2000;
+float SpeakerVol = 1;
+float DotLength = 0.1; // Duration of a dot.
+float Speed = 1.2/DotLength; // Words per minute (1 word = 50 dots).
+
+int cnt_todo=0;
+char* mdata;
+
+FIFO <char> message(1000);
+Speaker buzzer(PB_6);
+
+char character_in, character_out;
+
+Serial pc(USBTX, USBRX);
+
+Thread thread_user_intf;
+
+void pc_intf()
+{
+ while(true) {
+ while(!pc.readable()) {};
+ cnt_todo++;
+ character_in = pc.getc();
+ message.put(character_in);
+ }
+}
+
+int main()
+{
+ thread_user_intf.start(pc_intf);
+ while(true) {
+ if(cnt_todo>0) {
+ character_out = message.get();
+ mdata = EncodeMorse(character_out);
+ for (int i=0; i<strlen(mdata); i++) {
+ if(mdata[i]!='0')
+ buzzer.PlayNote(SpeakerFreq,((mdata[i]-'0')/Speed),SpeakerVol);
+ else
+ Thread::wait(1000/Speed);
+ }
+ Thread::wait(3000/Speed);
+ cnt_todo--;
+ }
+ }
+}