Xylos (CCIR tones) TX, jammer update, SD card mod load

Xylos TX (CCIR tones) ;) Jammer update, still buggy and inefficient SD card module loader update
2026-09-10 08:39:29 +00:00 · 2016-01-03 07:24:30 +01:00
parent 5a5a4c3525
commit 802ac496e9
28 changed files with 2272 additions and 1143 deletions
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "proc_xylos.hpp"
+#include "portapack_shared_memory.hpp"
+#include "sine_table.hpp"
+
+#include <cstdint>
+
+void XylosProcessor::execute(buffer_c8_t buffer) {
+	
+	for (size_t i = 0; i<buffer.count; i++) {
+		//Sample generation 2.28M/10 = 228kHz
+		if (s >= 9) {
+			s = 0;
+			
+			if (sample_count >= CCIR_TONELENGTH) {
+				if (shared_memory.xylos_transmit_done == false) {
+					message.n = byte_pos;	// Progress
+					shared_memory.application_queue.push(message);
+					digit = shared_memory.xylosdata[byte_pos++];
+				}
+					
+				if (!digit) {
+					message.n = 25;	// Done code
+					shared_memory.xylos_transmit_done = true;
+					shared_memory.application_queue.push(message);
+					digit = 0;
+				}
+
+				if (digit > '9') digit -= 7;
+				digit -= 0x30;
+				
+				sample_count = 0;
+			} else {
+				sample_count++;
+			}
+			
+			aphase += ccir_phases[digit];
+		} else {
+			s++;
+		}
+		
+		sample = (sine_table_f32[(aphase & 0x03FF0000)>>18]*255); 
+		
+		//FM
+		frq = sample * 160; // 20kHz wide (?)
+		
+		phase = (phase + frq);
+		sphase = phase + (256<<16);
+
+		re = (sine_table_f32[(sphase & 0x03FF0000)>>18]*127);
+		im = (sine_table_f32[(phase & 0x03FF0000)>>18]*127);
+		
+		buffer.p[i] = {(int8_t)re,(int8_t)im};
+	}
+}