From 3b33d88f5621a8d40ccf4c0177c98f63a5c19c38 Mon Sep 17 00:00:00 2001
From: Franklin Wei <frankhwei536@gmail.com>
Date: Thu, 1 Jan 1970 01:45:37 +0100
Subject: Initial commit

---
 Makefile  |  10 ++++++
 led.cpp   |  23 ++++++++++++++
 led.h     |   4 +++
 main.cpp  |  34 ++++++++++++++++++++
 morse.cpp | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 morse.h   |   6 ++++
 6 files changed, 181 insertions(+)
 create mode 100644 Makefile
 create mode 100644 led.cpp
 create mode 100644 led.h
 create mode 100644 main.cpp
 create mode 100644 morse.cpp
 create mode 100644 morse.h

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..cd6ce6d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+SOURCES = led.o morse.o main.o
+HEADERS = led.h morse.h
+CXXFLAGS = -I.
+pish: $(SOURCES) $(HEADERS) Makefile
+	g++ $(SOURCES) -o pish
+all: pish
+clean:
+	rm -f *~
+	rm -f *.o
+	rm -f pish
diff --git a/led.cpp b/led.cpp
new file mode 100644
index 0000000..16d48a1
--- /dev/null
+++ b/led.cpp
@@ -0,0 +1,23 @@
+#include <fstream>
+#include <leds.h>
+using namespace std;
+bool isLightOn()
+{
+  ifstream ifs("/sys/class/leds/led0/brightness");
+  int brightness;
+  ifs >> brightness;
+  if(brightness==0)
+    return false;
+  else
+    return true;
+}
+void setLight(bool on)
+{
+  ofstream ofs("/sys/class/leds/led0/brightness");
+  int val;
+  if(on)
+    val=255;
+  else
+    val=0;
+  ofs << val << flush;
+}
diff --git a/led.h b/led.h
new file mode 100644
index 0000000..49b8f6c
--- /dev/null
+++ b/led.h
@@ -0,0 +1,4 @@
+bool isLightOn();
+void setLight(bool);
+#define lightOn() setLight(true)
+#define lightOff() setLight(false)
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..d3ec2ae
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,34 @@
+#include <unistd.h>
+#include <led.h>
+#include <morse.h>
+#include <iostream> // let the user use this with a screen, too
+using namespace std;
+void parse_args(int argc, char* argv[])
+{
+  // nothing for now
+}
+int main(int argc, char* argv[])
+{
+  if(geteuid()!=0) // must be root to control LEDS!
+    {
+      cerr << "Need to be root to control LEDs!"<< endl;
+      cerr << "Current user ID: " << geteuid() << endl;
+      return 1;
+    }
+  parse_args(argc, argv);
+  cout << "PiSH initializied." << endl;
+  dash();
+  usleep(250000);
+  dash();
+  usleep(250000);
+  string cmd;
+  while(cmd!="exit")
+    {
+      dot();
+      cout << "PiSH> ";
+      getline(cin, cmd);
+      dash();
+      usleep(250000);
+    }
+}
+
diff --git a/morse.cpp b/morse.cpp
new file mode 100644
index 0000000..95c5114
--- /dev/null
+++ b/morse.cpp
@@ -0,0 +1,104 @@
+#include <led.h>
+#include <iostream>
+#include <string>
+#include <map>
+#include <ctime>
+#include <cctype>
+#include <unistd.h>
+#include <cstring>
+using namespace std;
+void dot()
+{
+  cout << "." << flush;
+  setLight(true);
+  usleep(250000);
+  setLight(false);
+}
+void dash()
+{
+  cout << "-" << flush;
+  setLight(true);
+  usleep(750000);
+  setLight(false);
+}
+static map<string, string> table;
+void transmit(const string& str)
+{
+  cout << "Transmitting message in Morse code via ACT LED..." << endl;
+  for(unsigned long long i=0;i<str.length();++i)
+    {
+      char ch=str[i];
+      string tmp;
+      tmp=toupper(ch);
+      string morse=table[tmp];
+      if(morse!="")
+	cout << ch << ": " << flush;
+      for(unsigned int j=0;j<morse.length();++j)
+	{
+	  char morseCh=morse[j];
+	  if(morseCh=='.')
+	    dot();
+	  else if(morseCh=='-')
+	    dash(); 
+	  usleep(200000);
+	}
+      if(morse!="")
+	cout << " " << flush;
+      usleep(250000); // between chars
+      if(isspace(ch))
+	{
+	  cout << " " << flush;
+	  usleep(500000); // extra for spaces
+	}
+    }
+}
+
+void init_morse()
+{
+  table["A"]=".-";
+  table["B"]="-...";
+  table["C"]="-.-.";
+  table["D"]="-..";
+  table["E"]=".";
+  table["F"]="..-.";
+  table["G"]="--.";
+  table["H"]="....";
+  table["I"]="..";
+  table["J"]=".---";
+  table["K"]="-.-";
+  table["L"]=".-..";
+  table["M"]="--";
+  table["N"]="-.";
+  table["O"]="---";
+  table["P"]=".--.";
+  table["Q"]="--.-";
+  table["R"]=".-.";
+  table["S"]="...";
+  table["T"]="-";
+  table["U"]="..-";
+  table["V"]="...-";
+  table["W"]=".--";
+  table["X"]="-..-";
+  table["Y"]="-.--";
+  table["Z"]="--..";
+  table["0"]="-----";
+  table["1"]=".----";
+  table["2"]="..---";
+  table["3"]="...--";
+  table["4"]="....-";
+  table["5"]=".....";
+  table["6"]="-....";
+  table["7"]="--...";
+  table["8"]="---..";
+  table["9"]="----.";
+  table["."]=".-.-.-";
+  table[","]="--..--";
+  table["("]="-.--.";
+  table[")"]="-.--.-";
+  table["/"]="-..-.";
+  table["="]="-...-";
+  table["+"]=".-.-.";
+  table["-"]="-....-";
+  table["\""]=".-..-.";
+  table["@"]=".--.-.";
+}
diff --git a/morse.h b/morse.h
new file mode 100644
index 0000000..b117d63
--- /dev/null
+++ b/morse.h
@@ -0,0 +1,6 @@
+#include <string>
+using namespace std;
+void transmit(const string&);
+void morse_init(); // call this first!
+void dot();
+void dash();
-- 
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