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CubeSatSim
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Merge pull request #363 from alanbjohnston/fc-c

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Improvements to FC decode and cross band repeater mode
fc-sub
Alan Johnston 10 months ago committed by GitHub
parent db89ea3c12 e8a031b5c9
commit a3327f87e3
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 46 additions and 83 deletions
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38
groundstation/fc_block_decode.py
Unescape View File

@ -12,7 +12,11 @@ logging.basicConfig(format='%(message)s')
def fstr(template):
return eval(f"f'{template}'")
return eval(f"f'{template}'")
def system_and_print(string):
print(string)
system(string)
FC_EPS = 1
FC_BOB = 25
@ -32,11 +36,11 @@ image_dir = "/home/pi/fctelem/"
image = "image_file"
ssdv = "/home/pi/ssdv/ssdv -d -J "
system("sudo rm " + image_dir + image)
#system("sudo rm " + html_dir + "*")
system("sudo rm " + html_dir + "/images/*")
system_and_print("sudo rm " + image_dir + image)
#system_and_print("sudo rm " + html_dir + "*")
system_and_print("sudo rm " + html_dir + "/images/*")
#system("cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg " + html_dir + "image_file.jpeg")
#system_and_print("cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg " + html_dir + "image_file.jpeg")
head_string = '<HEAD><meta http-equiv="refresh" content="5"><title>FunCube CubeSatSim Telemetry</title></HEAD>\n<HTML>\n<H2>FunCube CubeSatSim Telemetry</H2>' + \
'<p><pre> <img height="256" width="320" src="' + image + '.jpeg"><br> <A HREF="images" target="_blank">All images</a><br>'
@ -117,7 +121,7 @@ if __name__ == "__main__":
print('Payload {:x} {:x} \n'.format(data_block[FC_PAYLOAD + extended], data_block[FC_PAYLOAD + extended + 1]))
if (data_block[FC_PAYLOAD + extended] == 0x55) and (data_block[FC_PAYLOAD + extended + 1] == 0x68):
try:
print("Writing payload to file")
print("Writing this image payload block to file " + image + "_payload")
immutable_payload = bytes(bytearray(data_block[(FC_PAYLOAD + extended):])) # payload)
# print(immutable_payload)
with open(image_dir + image + "_payload", "wb") as binary_file:
@ -125,8 +129,10 @@ if __name__ == "__main__":
except:
print("File error")
# try:
system(ssdv + image_dir + image + "_payload " +
print("Processing payload with ssdv, saving image to " + image + "_paylad.jpeg and log to ssdv_output")
system_and_print(ssdv + image_dir + image + "_payload " +
image_dir + image + "_payload.jpeg 2>&1 | sudo tee /home/pi/fctelem/ssdv_output")
print("Parsing ssdv_output")
with open("/home/pi/fctelem/ssdv_output", "r") as file:
for line in file:
# print("line:")
@ -141,29 +147,25 @@ if __name__ == "__main__":
print("End of image")
if (image_id != 256):
print("Saving complete image")
system("cp " + filename + " " + html_dir + "images/")
newfilename = image_dir + image + str(new_image_id) + ".jpeg"
# system(ssdv + image_dir + image + " " + filename)
system("mv " + filename + " " + newfilename)
system("mv " + image_dir + image + " " + image_dir + image + str(image_id))
# system("cp " + filename + " " + html_dir + "images/" + image + str(image_id) + ".jpeg")
system_and_print("cp " + html_dir + "image_file.jpeg " + html_dir + "images/" + image + str(image_id) + "." + str(image_count) + ".jpeg")
system_and_print("sudo rm " + image_dir + image)
else:
system("sudo rm " + image_dir + image)
system_and_print("sudo rm " + image_dir + image)
print("New Image ID: ")
print(new_image_id)
image_id = new_image_id
# image_count = (image_count + 1) % 256
image_count = 1
else:
image_count += 1
print("new image_count:")
print(image_count)
print("Appending block to file " + image)
with open(image_dir + image, "ab") as binary_file:
binary_file.write(immutable_payload)
filename = image_dir + image + str(image_id) + "." + str(image_count) + ".jpeg"
system(ssdv + image_dir + image + " " + filename)
system("cp " + filename + " " + html_dir + "image_file.jpeg")
print("Running ssdv with all blocks in file " + image + " saving as " + html_dir + "image_file.jpeg")
system_and_print(ssdv + image_dir + image + " " + html_dir + "image_file.jpeg")
telem_string = fstr(telem_string_format)
print("Writing index.html file")
with open(html_dir + "index.html", "w") as html_file:
html_file.write(head_string)
html_file.write(telem_string)

91
transmit.py
Unescape View File

@ -23,6 +23,14 @@ def battery_saver_check():
except:
print("battery saver not activated")
# txc = True
def blink(times):
powerPin = 16
for i in range(times):
GPIO.output(powerPin, 0) # blink two times
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
def increment_mode():
print("increment mode")
@ -39,76 +47,26 @@ def increment_mode():
print(mode)
if (mode == 'a'):
mode = 'f'
GPIO.output(powerPin, 0) # blink two times
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
blink(2)
sleep(2.5)
elif (mode == 'f'):
mode = 'b'
GPIO.output(powerPin, 0) # blink three times
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
blink(3)
sleep(2.5)
elif (mode == 'b'):
mode = 's'
GPIO.output(powerPin, 0) # blink four times
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
blink(4)
sleep(2.5)
elif (mode == 's'):
mode = 'm'
GPIO.output(powerPin, 0) # blink five times
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1);
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
sleep(0.1)
GPIO.output(powerPin, 0)
sleep(0.1)
GPIO.output(powerPin, 1)
blink(5)
sleep(2.5)
else:
mode = 'a'
GPIO.output(powerPin, 0) # blink one time
sleep(0.1)
GPIO.output(powerPin, 1)
blink(1)
sleep(2.5)
try:
@ -815,7 +773,7 @@ if __name__ == "__main__":
sleep(4.2)
else: # FunCube mode image
for i in range(4):
print("Checking image_file.bin")
# print("Checking image_file.bin")
try:
file = open("/home/pi/CubeSatSim/image_file.bin")
file.close()
@ -839,7 +797,7 @@ if __name__ == "__main__":
# else:
sleep(0.6)
elif (mode == 'e'): # code based on https://zr6aic.blogspot.com/2016/11/creating-2m-fm-repeater-with-raspberry.html
print("Repeater")
print("Cross Band Repeater")
print("Stopping command and control")
system("sudo systemctl stop command")
print("turn on FM rx")
@ -847,11 +805,13 @@ if __name__ == "__main__":
output(ptt, 1)
GPIO.setmode(GPIO.BCM) # added to make Tx LED work on Pi 4
GPIO.setup(txLed, GPIO.OUT)
GPIO.setup(powerPin, GPIO.OUT)
# GPIO.setup(powerPin, GPIO.OUT)
GPIO.setup(squelch, GPIO.IN, pull_up_down=GPIO.PUD_UP) ## pull up in case pin is not connected
GPIO.output(powerPin, 0)
# GPIO.output(powerPin, 1) # was 0
txf = float(tx) - 288.9
print("Transmit frequency: ",txf)
while True:
sleep(0.5)
sleep(1)
if (GPIO.input(squelch) == False):
print("Carrier detected, starting repeater")
GPIO.setmode(GPIO.BCM) # added to make Tx LED work on Pi Zero 2 and Pi 4
@ -859,12 +819,13 @@ if __name__ == "__main__":
output(txLed, txLedOn)
# system("arecord -D plughw:CARD=Device,DEV=0 | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 &")
## system("arecord -D plughw:CARD=Device,DEV=0 -f S16_LE -r 48000 -c 1 | csdr convert_s16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 &")
system("sudo nc -l 8011 | csdr convert_i16_f | csdr gain_ff 16000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + tx + "e3 &")
sleep(1)
system("sudo arecord -D plughw:1 -r48000 -fS16_LE -c1 | nc localhost 8011 &")
GPIO.output(powerPin, 1)
system("sudo nc -l 8011 | csdr convert_i16_f | csdr gain_ff 16000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f " + str(txf) + "e3 &")
sleep(0.5)
GPIO.output(powerPin, 0)
# system("sudo arecord -D plughw:1 -r48000 -fS16_LE -c1 | nc localhost 8011 &")
system("sudo arecord -D plughw:CARD=Device,DEV=0 -r48000 -fS16_LE -c1 | nc localhost 8011 &")
# GPIO.output(powerPin, 1)
# sleep(0.5)
# GPIO.output(powerPin, 0)
while (GPIO.input(squelch) == False):
sleep(1)
print("No carrier detected, stopping repeater")

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