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CubeSatSim
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Merge pull request #45 from alanbjohnston/dev-next-d

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alanbjohnston 5 years ago committed by GitHub
parent fd5cb5fa03 b66f6c41f0
commit aba6b01cf0
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6 changed files with 164 additions and 49 deletions
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18
README.md
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@ -4,7 +4,7 @@ The CubeSat Simulator https://github.com/alanbjohnston/CubeSatSim/wiki is a low
There are several hardware versions and software branches to go with them - see below for information.
See the Wiki Software Install page for more details: https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install. To build and run the software on a Raspberry Pi 3B, 3B+, or Pi Zero W (doesn't work on Pi 4 since rpitx doesn't work on it yet):
See the Wiki Software Install page for more details: https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install. To build and run the software on a Raspberry Pi 3B, 3B+, Pi Zero or Pi Zero W (doesn't work on Pi 4 since rpitx doesn't work on it yet):
Requires:
- Raspbian Stretch or Buster, full desktop or Lite
- wiringpi
@ -14,9 +14,15 @@ Requires:
- Direwolf
- rpitx
See the Wiki Software Install page for more details: https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install. To build and run the software on a Raspberry Pi 3B, 3B+, or Pi Zero W (Does NOT work on a Pi 4 since rpitx does not work on it yet):
See the Wiki Software Install page for more details: https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install. Runs on a Raspberry Pi 3B, 3B+, or Pi Zero W (Does NOT work on a Pi 4 since rpitx does not work on it yet). The Pi Zero W or Pi Zero are recommended since they are draw the least power and will result in the best performance under battery power.
`sudo apt-get install -y wiringpi git libasound2-dev i2c-tools`
These instructions assume a Pi Zero W with WiFi connectivity. If you have a Pi Zero, follow these instructions to get connectivity: https://desertbot.io/blog/headless-pi-zero-ssh-access-over-usb-windows
To begin the software install, after logging in type:
`sudo apt update -y && sudo apt dist-upgrade -y`
`sudo apt install -y wiringpi git libasound2-dev i2c-tools`
Run raspi-config and enable the I2C bus by selecting Option 5 Interfacing Options and then Option 5 I2C and selecting Y to enable the ARM I2C bus:
@ -80,6 +86,8 @@ Create a sim.cfg configuration file with your amateur radio callsign (in all cap
`echo "callsign" >> sim.cfg`
`echo >> .mode`
Compile the code:
`make rebuild`
@ -125,6 +133,10 @@ To make the demo.sh script run automatically on boot:
`sudo systemctl enable cubesatsim`
`sudo cp ~/CubeSatSim/systemd/rpitx.service /etc/systemd/system/rpitx.service`
`sudo systemctl enable rpitx`
Now reboot for all the changes to take effect:
`sudo reboot now`

87
afsk/main.c
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@ -122,7 +122,7 @@ char call[5];
int bitRate, mode, bufLen, rsFrames, payloads, rsFrameLen, dataLen, headerLen, syncBits, syncWord, parityLen, samples, frameCnt, samplePeriod;
float sleepTime;
int sampleTime = 0;
int sampleTime = 0, frames_sent = 0;
int cw_id = ON;
int vB4 = FALSE, vB5 = FALSE, ax5043 = FALSE, transmit = FALSE, onLed, onLedOn, onLedOff, txLed, txLedOn, txLedOff, payload = OFF;
float batteryThreshold = 0;
@ -399,8 +399,14 @@ int main(int argc, char *argv[]) {
}
pinMode (txLed, OUTPUT);
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
pinMode (onLed, OUTPUT);
digitalWrite (onLed, onLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
// if ((cycle == ON) && !ax5043) // don't cycle modes if using AX5043
// mode = (reset_count) % 3; // alternate between the three modes
@ -495,7 +501,7 @@ else
//uint8_t data[1024];
tx_freq_hz -= tx_channel * 50000;
/*
if (transmit == FALSE)
{
@ -504,7 +510,7 @@ else
}
// Send ID in CW (Morse Code)
cw_id = OFF;
if (cw_id == ON) // Don't send CW if using AX5043 or in mode cycling or set by 3rd argument
{
char cw_str[200];
@ -518,7 +524,10 @@ if (cw_id == ON) // Don't send CW if using AX5043 or in mode cycling or set by 3
strcat(cw_str, cw_footer);
//printf("Before 1st strcpy\n");
digitalWrite (txLed, txLedOn);
printf("Before cmd\n");
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
//printf("Before cmd\n");
//printf("CW String: %s\n", cw_str);
// FILE* f;
system(cw_str);
@ -528,13 +537,16 @@ printf("After command\n");
// sleep(7);
//printf("Before Write\n");
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
//printf("After Write\n");
}
//printf("Done CW!\n");
*/
while (loop-- != 0)
{
frames_sent++;
float batteryVoltage = read_sensor_data(sensor[BAT]).voltage;
#ifdef DEBUG_LOGGING
fprintf(stderr,"INFO: Battery voltage: %f V Battery Threshold %f V\n", batteryVoltage, batteryThreshold);
@ -610,10 +622,16 @@ while (loop-- != 0)
if (mode == BPSK)
{
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
printf("Sleeping to allow BPSK transmission to finish.\n");
sleep(loop_count * 5);
printf("Done sleeping\n");
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
}
else if (mode == FSK)
{
@ -621,6 +639,7 @@ while (loop-- != 0)
sleep(loop_count);
printf("Done sleeping\n");
}
/*
// int transmit = popen("timeout 1 sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.897e3","r");
int txResult = popen("sudo killall -9 rpitx > /dev/null 2>&1", "r");
pclose(txResult);
@ -631,7 +650,10 @@ while (loop-- != 0)
if(cw_id == ON) // only turn off Power LED if CW ID is enabled (i.e. not demo.sh mode cycling)
digitalWrite (onLed, onLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
*/
return 0;
}
@ -681,6 +703,9 @@ int get_tlm(void) {
for (int j = 0; j < frameCnt; j++)
{
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
int tlm[7][5];
memset(tlm, 0, sizeof tlm);
@ -801,17 +826,23 @@ for (int j = 0; j < frameCnt; j++)
strcat(cw_str2, cw_footer2);
//printf("Before 1st strcpy\n");
digitalWrite (txLed, txLedOn);
printf("Before cmd\n");
printf("CW telem String: %s\n", cw_str2);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
//printf("Before cmd\n");
//printf("CW telem String: %s\n", cw_str2);
// FILE* f;
if (mode == CW)
system(cw_str2);
// printf("File %d \n", f);
// printf("close: %d \n", pclose(f)); // execute command and wait for termination before continuing
printf("After command\n");
//printf("After command\n");
// sleep(7);
//printf("Before Write\n");
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
//printf("After Write\n");
//}
//printf("Done CW!\n");
@ -819,7 +850,10 @@ printf("After command\n");
if (ax5043)
{
digitalWrite (txLed, txLedOn);
fprintf(stderr,"INFO: Transmitting X.25 packet\n");
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
fprintf(stderr,"INFO: Transmitting X.25 packet using AX5043\n");
memcpy(data, str, strnlen(str, 256));
int ret = ax25_tx_frame(&hax25, &hax5043, data, strnlen(str, 256));
if (ret) {
@ -830,6 +864,9 @@ printf("After command\n");
}
ax5043_wait_for_transmit();
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
if (ret) {
fprintf(stderr,
@ -856,17 +893,26 @@ printf("After command\n");
fprintf(stderr, " See http://cubesatsim.org/wiki for info about building a CubeSatSim\n\n");
}
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
sleep(3);
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
}
//digitalWrite (txLed, txLedOff);
}
printf("End of get_tlm and rpitx =========================================================\n");
//printf("End of get_tlm and rpitx =========================================================\n");
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
return;
}
@ -942,11 +988,17 @@ if (firstTime != ON)
{
// delay for sample period
digitalWrite (txLed, txLedOn);
#ifdef DEBUG_LOGGING
printf("Tx LED On\n");
#endif
while ((millis() - sampleTime) < samplePeriod)
sleep(sleepTime);
digitalWrite (txLed, txLedOff);
#ifdef DEBUG_LOGGING
printf("Tx LED Off\n");
#endif
printf("Sample period: %d\n",millis() - sampleTime);
sampleTime = millis();
@ -1261,7 +1313,7 @@ if (firstTime != ON)
// printf("\n");
// rpitx
/*
char cmdbuffer[1000];
FILE* txResult;
if ((rpitxStatus != mode)) // || ((loop % 1000) == 0))
@ -1287,7 +1339,7 @@ if (firstTime != ON)
// printf("3\n");
sleep(1);
// digitalWrite (txLed, txLedOff);
if (transmit)
{
if (mode == FSK) {
@ -1310,6 +1362,7 @@ if (firstTime != ON)
sleep(2);
// printf("Results of transmit command: %s\n", cmdbuffer);
}
*/
// socket write
@ -1379,7 +1432,11 @@ if (firstTime != ON)
fprintf(stderr, " See http://cubesatsim.org/wiki for info about building a CubeSatSim\n\n");
}
// digitalWrite (0, HIGH);
firstTime = 0;
if (mode == FSK)
firstTime = 0;
else if (frames_sent > 0) //5)
firstTime = 0;
return 0;
}

42
demo.sh
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@ -2,35 +2,15 @@
echo -e "\nDemo of CubeSatSim at 434.9 MHz\n"
#exit
sudo systemctl restart rpitx
y=$(last reboot | grep ^reboot | wc -l)
echo $y
#if (( $y % 2 == 0 ))
#then
echo -e "\n Continuous Mode\n\n"
# /home/pi/CubeSatSim/radioafsk f
if [ "$1" = "a" ]; then
echo "Mode is continuous AFSK"
sleep 1
sudo killall -9 sendiq
sudo killall -9 sendiq
sleep 1
/home/pi/CubeSatSim/radioafsk afsk
elif [ "$1" = "b" ]; then
echo "Mode is continuous BPSK"
sleep 1
sudo killall -9 sendiq
sudo killall -9 sendiq
sleep 1
/home/pi/CubeSatSim/radioafsk bpsk
else
echo "Mode is continuous FSK"
sleep 1
sudo killall -9 sendiq
sudo killall -9 sendiq
sleep 1
/home/pi/CubeSatSim/radioafsk fsk
fi
if [ "$1" = "a" ]; then
echo "Mode is continuous AFSK"
/home/pi/CubeSatSim/radioafsk afsk
elif [ "$1" = "b" ]; then
echo "Mode is continuous BPSK"
/home/pi/CubeSatSim/radioafsk bpsk
else
echo "Mode is continuous FSK"
/home/pi/CubeSatSim/radioafsk fsk
fi

46
rpitx.py
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@ -0,0 +1,46 @@
#!/usr/bin/env python
import RPi.GPIO as GPIO
import subprocess
import time
import os
import sys
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(27, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_UP)
transmit = False
if GPIO.input(12) == False:
transmit = True
if GPIO.input(27) == False:
transmit = True
print(transmit)
file = open("/home/pi/CubeSatSim/sim.cfg")
callsign = file.readline().split(" ")[0]
print(callsign)
os.system("echo 'de " + callsign + "' > id.txt && gen_packets -M 20 id.txt -o morse.wav -r 48000 > /dev/null 2>&1 && cat morse.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3")
time.sleep(2)
if __name__ == "__main__":
print 'Length: ', len(sys.argv)
if (len(sys.argv)) > 1:
# print("There are arguments!")
if (('a' == sys.argv[1]) or ('afsk' in sys.argv[1])):
print("AFSK")
while True:
time.sleep(5)
elif (('b' == sys.argv[1]) or ('bpsk' in sys.argv[1])):
print("BPSK")
os.system("sudo nc -l 8080 | csdr convert_i16_f | csdr fir_interpolate_cc 2 | csdr dsb_fc | csdr bandpass_fir_fft_cc 0.002 0.06 0.01 | csdr fastagc_ff | sudo /home/pi/rpitx/sendiq -i /dev/stdin -s 96000 -f 434.9e6 -t float")
else:
print("FSK")
os.system("sudo nc -l 8080 | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3")
else:
print("FSK")
os.system("sudo nc -l 8080 | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3")

5
rpitx.sh
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@ -0,0 +1,5 @@
#!/bin/bash
echo -e "\nrpitx for CubeSatSim at 434.9 MHz using python\n"
python /home/pi/CubeSatSim/rpitx.py $1

15
systemd/rpitx.service
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@ -0,0 +1,15 @@
[Unit]
Description=CubeSatSim rpitx service
[Service]
TimeoutStopSec=5
EnvironmentFile=/home/pi/CubeSatSim/.mode
ExecStart=/home/pi/CubeSatSim/rpitx.sh $ARG1
WorkingDirectory=/home/pi/CubeSatSim
StandardOutput=inherit
StandardError=inherit
Restart=always
User=root
[Install]
WantedBy=default.target
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