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i2s-dual
Your Name 2025-07-10 13:44:33 +00:00
rodzic 15097c958d
commit 537986fe33
5 zmienionych plików z 26 dodań i 124 usunięć
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121
start_tx.sh
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@ -1,68 +1,5 @@
#!/bin/bash
#
# Wenet TX-side Initialisation Script
# 2024-09-14 Mark Jessop <vk5qi@rfhead.net>
#
# Run this to set up an attached RFM98W and start transmitting!
# Replace the transmit frequency and callsign with your own.
#
#
# A callsign which will be included in the Wenet Packets.
# This MUST be <= 6 characters long.
MYCALL=N0CALL
# The centre frequency of the Wenet transmission, in MHz.
TXFREQ=443.500
# Transmit power, in dBm
# Allowed values are from 2 through 17 dBm.
TXPOWER=17
# GPS Port and baud rate
# Note that we only support uBlox GPS units
# set this to none to disable GPS support
GPSPORT=/dev/ttyACM0
GPSBAUD=115200
# Image settings
# Image scaling - Scale the 'native' image resolution of the attached camera by this much
# before transmitting.
TX_IMAGE_SCALING=0.5
# White Balance settings
# Allowed Values: Auto, Daylight, Cloudy, Incandescent, Tungesten, Fluorescent, Indoor
WHITEBALANCE=Auto
# Exposure compensation
# Allowed values: -8.0 to 8.0
# You may wish to adjust this to bump up the exposure a little.
EXPOSURE=0.0
# Refer near the end of this file for image flipping and overlay options
# Baud Rate
# Known working transmit baud rates are 115200 (the preferred default).
# Lower baud rates *may* work, but will need a lot of testing on the receiver
# chain to be sure they perform correctly.
BAUDRATE=115200
# RFM98W SPI Device
# SPI device number of your RFM98W chip
# This will either be 0 or 1 on a RPi.
SPIDEVICE=0
# Modulation UART
# The UART used to modulate the RFM98W with our Wenet transmission
# We want to be using the PL011 UART, *not* the Mini-UART
# On a Pi Zero W, you may need to disable bluetooth. See here for more info:
# https://www.raspberrypi.com/documentation/computers/configuration.html#uarts-and-device-tree
SERIALPORT=/dev/ttyAMA0
# CHANGE THE FOLLOWING LINE TO REFLECT THE ACTUAL PATH TO THE TX FOLDER.
# i.e. it may be /home/username/dev/wenet/tx/
cd /home/pi/wenet/tx/
cd /root/wenet/tx/
# Wait here until the SPI devices are available.
# This can take a few tens of seconds after boot.
@ -85,55 +22,7 @@ done
echo "Waiting another 10 seconds before startup."
sleep 10
# OPTIONAL - Wait for the GNSS receiver to obtain lock before starting up the camera and transmitter.
# This may help with getting first GNSS lock after boot.
# --waitforlock 10 Wait for up to 10 minutes before timing out and continuing anyway
# --lockcount 60 Wait for 60 sequential valid 3D fixed before exiting (2 Hz update rate, so 60 -> 30 seconds)
# --locksats 6 Only consider a fix as valid if it has more than 6 SVs in use.
#python3 ublox.py --waitforlock 10 --lockcount 60 --locksats 6 --baudrate $GPSBAUD $GPSPORT
# Start the main TX Script.
#
# Additional configuration lines you may wish to add or remove before the $CALLSIGN line may include:
# Flip the image vertically and horizontally (e.g. if the camera is mounted upside down)
# --vflip --hflip \
#
# Add a logo overlay in the bottom right of the image. This must be a transparent PNG file.
# --logo yourlogo.png \
#
# Set a fixed focus position on a PiCam v3 (NOTE: The Picamv3 focus drifts with temperature - beware!!!)
# 0.0 = Infinity
# --lensposition 0.0 \
#
# Set a user-defined AutoFocus Window Area, for use wiith PiCam v3 in Autofocus Mode
# Must be provided as x,y,w,h , with all values between 0-1.0, where:
# x: Starting X position of rectangle within frame, as fraction of frame width
# y: Starting Y position of rectangle within frame, as fraction of frame height
# w: Width of rectangle, as fraction of frame width
# h: Height of rectangle, as fraction of frame height
# e.g:
# --afwindow 0.25,0.25,0.5,0.5 \
#
# Set a custom focus mapping range for the PiCam v3, which maps the autofocus range to a lens position.
# This can be used to constrain the autofocus range, or even completely unlock it to the full lens travel.
# e.g., for full lens travel, use:
# --afcustommap 0.0,0.0,15.0,1024.0 \
#
#
# Use the Focus Figure-of-merit metadata to select the transmitted image, instead of selecting on file size
# Only useful for lenses with autofocus (PiCam v3)
# --use_focus_fom
python3 tx_picamera2_gps.py \
--rfm98w $SPIDEVICE \
--baudrate $BAUDRATE \
--frequency $TXFREQ \
--serial_port $SERIALPORT \
--tx_power $TXPOWER \
--gps $GPSPORT \
--gpsbaud $GPSBAUD \
--resize $TX_IMAGE_SCALING \
--whitebalance $WHITEBALANCE \
--exposure $EXPOSURE \
$MYCALL
/usr/bin/ubxtool -f /dev/ttySOFT0 -v 3 -s 9600 -e binary -d NMEA -S 4800 -w 5
/usr/bin/python3 /root/agps.py
/usr/bin/python3 ublox.py --waitforlock 10 --lockcount 60 --locksats 2 --baudrate 4800 /dev/ttySOFT0
/usr/bin/python3 tx_picamera2_gps.py --rfm98w 1 --frequency=443.500 --baudrate=115200 --rfm98w-i2s 1 --frequency=443.500 --baudrate=96000 -v --gpsbaud 4800 --gps /dev/ttySOFT0 VK3FUR VK4XSS

9
tx/PacketTX.py
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@ -166,7 +166,8 @@ class PacketTX(object):
Checks telemetry and image queues in order, and transmits a packet.
"""
while self.transmit_active:
try:
while self.transmit_active:
if self.telemetry_queue.qsize()>0:
packet = self.telemetry_queue.get_nowait()
self.radio.transmit_packet(packet)
@ -192,6 +193,8 @@ class PacketTX(object):
# commented this out as we should probably always be sending something
# this can cause gaps in i2s, which while won't hurt the performance can be annoying
# as the stream starts and stops
except:
os._exit(1)
print("Closing Thread")
self.radio.shutdown()
@ -205,7 +208,7 @@ class PacketTX(object):
# Deprecated function
def tx_packet(self,packet,blocking = False):
self.ssdv_queue.put(self.frame_packet(packet, self.fec))
self.ssdv_queue.put([self.frame_packet(packet, self.fec),'N0CALL'.encode('ascii')])
if blocking:
while not self.ssdv_queue.empty():
@ -687,4 +690,4 @@ if __name__ == "__main__":
except KeyboardInterrupt:
tx.close()
logging.info("Closing")
logging.info("Closing")

1
tx/WenetPiCamera2.py
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@ -492,7 +492,6 @@ class WenetPiCamera2(object):
except:
self.debug_message("Error initializing camera!")
sleep(1)
continue
# Otherwise, proceed to post-processing step.

9
tx/radio_wrappers.py
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@ -227,7 +227,7 @@ class RFM98W_Serial(RFM98W):
):
self.serial_port = serial_port
self.serial = None
super().__init__(spidevice,frequency,baudrate,tx_power_dbm,reinit_count,led=5)
self.start()
@ -241,9 +241,10 @@ class RFM98W_Serial(RFM98W):
# Now initialise the Serial port for modulation
if self.serial_port:
try:
self.serial = serial.Serial(self.serial_port, self.baudrate)
self.serial.break_condition=True # Set UART to low when we aren't using it. Used for dual tx mode
logging.info(f"RFM98W - Opened Serial port {self.serial_port} for modulation.")
if not self.serial:
self.serial = serial.Serial(self.serial_port, self.baudrate)
self.serial.break_condition=True # Set UART to low when we aren't using it. Used for dual tx mode
logging.info(f"RFM98W - Opened Serial port {self.serial_port} for modulation.")
except Exception as e:
logging.critical(f"Could not open serial port! Error: {str(e)}")
self.serial = None

10
tx/ublox.py
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@ -767,6 +767,7 @@ class UBlox:
def write(self, buf):
'''write some bytes'''
print("write")
if not self.read_only:
if self.use_sendrecv:
return self.dev.send(buf)
@ -1037,14 +1038,23 @@ class UBloxGPS(object):
""" Configure the uBlox GPS """
self.gps.set_binary()
self.gps.configure_poll_port()
time.sleep(1)
self.gps.configure_poll(CLASS_CFG, MSG_CFG_USB)
time.sleep(1)
self.gps.configure_port(port=PORT_SERIAL1, inMask=1, outMask=0)
time.sleep(1)
self.gps.configure_port(port=PORT_USB, inMask=1, outMask=1)
time.sleep(1)
self.gps.configure_port(port=PORT_SERIAL2, inMask=1, outMask=0)
time.sleep(1)
self.gps.configure_poll_port()
time.sleep(1)
self.gps.configure_poll_port(PORT_SERIAL1)
time.sleep(1)
self.gps.configure_poll_port(PORT_SERIAL2)
time.sleep(1)
self.gps.configure_poll_port(PORT_USB)
time.sleep(1)
self.gps.configure_solution_rate(rate_ms=self.update_rate_ms)
self.gps.set_preferred_dynamic_model(self.dynamic_model)