From 9b6264ea6c99fe41ae0121e8ca3f1dd9a712e70c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20Veres-Szentkir=C3=A1lyi?= <vsza@vsza.hu>
Date: Tue, 1 Oct 2013 10:16:41 +0200
Subject: [PATCH] initial commit

---
 beacon.py | 39 +++++++++++++++++++++++++++++++++++++++
 beacon.sh |  5 +++++
 2 files changed, 44 insertions(+)
 create mode 100644 beacon.py
 create mode 100644 beacon.sh

diff --git a/beacon.py b/beacon.py
new file mode 100644
index 0000000..b58c6ed
--- /dev/null
+++ b/beacon.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+"""
+This example streams the raw floating point (freq, msec) tuples to stdout
+in 4-byte single precision format (8 bytes per tuple), so that it can be
+processed outside PySSTV.
+
+Usage example using unixsstv/gen_values:
+beacon.py | gen_values 44100 | play -r 44100 -t f32 -c 1 --norm -
+"""
+
+from pysstv.sstv import SSTV
+from PIL import Image, ImageFont, ImageDraw
+from pysstv.color import MartinM2
+from subprocess import check_output
+from cStringIO import StringIO
+import RPi.GPIO as GPIO
+import struct, sys
+
+TX_PIN = 18
+
+def main():
+    img = Image.open(StringIO(check_output(['raspistill', '--output', '-',
+        '--width', '320', '--height', '256', '-e', 'bmp'])))
+    img = img.resize((MartinM2.WIDTH, MartinM2.HEIGHT))
+    font = ImageFont.load_default()
+    draw = ImageDraw.Draw(img)
+    draw.text((17, 17), "HA5KDR", (0, 0, 0), font=font)
+    draw.text((16, 16), "HA5KDR", (255, 255, 255), font=font)
+    sstv = MartinM2(img, 44100, 16)
+    sstv.vox_enabled = True
+    for freq, msec in sstv.gen_freq_bits():
+        sys.stdout.write(struct.pack('ff', freq, msec))
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(TX_PIN, GPIO.OUT)
+    GPIO.output(TX_PIN, True)
+
+if __name__ == '__main__':
+    main()
diff --git a/beacon.sh b/beacon.sh
new file mode 100644
index 0000000..6d60e17
--- /dev/null
+++ b/beacon.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+python /home/pi/beacon.py | /home/pi/unixsstv/gen_values 44100 >/tmp/wav.bin
+play -q -r 44100 -t f32 -c 1 --norm /tmp/wav.bin >/dev/null 2>&1
+python -c 'import RPi.GPIO as G; G.setmode(G.BCM); G.setup(18, G.OUT); G.output(18, False); G.cleanup()' >/dev/null 2>&1
+rm -f /tmp/wav.bin