LDPC FEC now enabled by default.

pull/1/head
Mark Jessop 2016-11-05 17:44:04 +10:30
rodzic 1ae0fce8a1
commit ad372b4d07
3 zmienionych plików z 2 dodań i 92 usunięć

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@ -20,7 +20,7 @@ except:
print("Using callsign: %s" % callsign)
fec = False
fec = True
debug_output = False # If True, packet bits are saved to debug.bin as one char per bit.
def transmit_file(filename, tx_object):

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@ -1,90 +0,0 @@
#!/usr/bin/env python
#
# PiCam Transmitter Script
# Capture images from the PiCam, and transmit them.
# Multiple baud rate test version.
#
# Mark Jessop <vk5qi@rfhead.net>
#
import PacketTX, sys, os, datetime, time
from PacketTX import write_debug_message
from wenet_util import *
try:
callsign = sys.argv[1]
if len(callsign)>6:
callsign = callsign[:6]
except:
print("Usage: python tx_picam.py CALLSIGN ")
sys.exit(1)
print("Using callsign: %s" % callsign)
fec = False
debug_output = False # If True, packet bits are saved to debug.bin as one char per bit.
baud_rate_1 = 115200
baud_rate_2 = 19200
def transmit_file(filename, tx_object):
file_size = os.path.getsize(filename)
if file_size % 256 > 0:
tx.set_idle_message("File size not a multiple of 256 bytes!")
return
print("Transmitting %d Packets." % (file_size/256))
f = open(filename,'rb')
for x in range(file_size/256):
data = f.read(256)
tx_object.tx_packet(data)
f.close()
print("Waiting for tx queue to empty...")
tx_object.wait()
tx = PacketTX.PacketTX(debug=debug_output, callsign=callsign,serial_baud=baud_rate_1)
tx.start_tx()
image_id = 0
try:
while True:
# Capture image using PiCam
print("Capturing Image...")
capture_time = datetime.datetime.utcnow().strftime("%Y%m%d-%H%M%SZ")
capture_multiple(filename="./tx_images/%s.jpg"%capture_time, debug_ptr = tx.set_idle_message)
#os.system("raspistill -t 100 -o ./tx_images/%s.jpg -vf -hf -w 1024 -h 768" % capture_time)
# Resize using convert
tx.set_idle_message("Converting Image to SSDV...")
#os.system("convert temp.jpg -resize %s\! temp.jpg" % tx_resolution)
# SSDV'ify the image.
os.system("ssdv -e -n -c %s -i %d ./tx_images/%s.jpg temp.ssdv" % (callsign,image_id,capture_time))
# Transmit image
print("Transmitting...")
# Transmit first in 115200 baud.
transmit_file("temp.ssdv",tx)
tx.close()
time.sleep(2)
# Transmit again in 19200 baud
tx = PacketTX.PacketTX(debug=debug_output, callsign=callsign, serial_baud=baud_rate_2, fec = fec)
tx.start_tx()
transmit_file("temp.ssdv",tx)
tx.close()
time.sleep(2)
# Re-open TX in 115200 baud.
tx = PacketTX.PacketTX(debug=debug_output, callsign=callsign, serial_baud=baud_rate_1, fec = fec)
tx.start_tx()
# Increment Counter
image_id = (image_id+1)%256
except KeyboardInterrupt:
print("Closing")
tx.close()

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@ -11,7 +11,7 @@ from PacketTX import write_debug_message
#
# Adjust this line to suit your needs (resolution, image flip, etc)
picam_str = "raspistill -t 3000 -ex auto -mm matrix -o %s -vf -hf -w 2592 -h 1936"
picam_str = "raspistill -t 3000 -ex auto -mm matrix -o %s -vf -hf -w 1488 -h 1120"
temp_file_prefix = "./temp_pic"