Diff: morsegenerator.cpp

Revision:

0:79a42458a848

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/morsegenerator.cpp	Tue Nov 27 17:52:36 2012 +0000
@@ -0,0 +1,44 @@
+#include "morsegenerator.h"
+
+
+MorseGenerator::MorseGenerator(callback_type _callback) {
+    generate_morse_map();
+    callback = _callback;
+}
+
+void MorseGenerator::generate_morse_map() {
+    add_mappings("ABCDEFGHIJKLMNOPQRSTUVWXYZ", MORSE_LETTERS);  
+    add_mappings("1234567890", MORSE_NUMBERS);
+}
+
+void MorseGenerator::add_mappings(string morse_chars, const string morse_codes[]) {
+    for (int i=0; i < morse_chars.length(); i++) {
+        morse_map.insert(MapType::value_type(morse_chars[i], morse_codes[i]));
+    }
+}
+
+void MorseGenerator::transmit(string message) {
+    for (int i=0; i < message.length(); i++) {
+        if (strncmp(&message[i], " ", 1) != 0) {
+            transmit(message[i]);                
+        }
+        wait_ms(DIT_MS * 7);
+    }
+}
+
+void MorseGenerator::transmit(char letter) {
+    int d;
+    string code = morse_map[letter];
+
+    for (int i=0; i < code.length(); i++) {
+        if (strncmp(&code[i], ".", 1) == 0) {
+            d = 1;
+        } else {
+            d = 3;
+        }
+        callback(1);
+        wait_ms(DIT_MS * d);
+        callback(0);
+        wait_ms(DIT_MS);
+    }
+}
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