Add some notes

.gitignore

@@ -1,5 +1,7 @@
 # Python
 __pycache__
+Pipfile
+Pipfile.lock
 
 # CAD
 *.stl
@@ -9,3 +11,4 @@ __pycache__
 *.png
 *.jpg
 *.wav
+*.pdf

README.md

@@ -0,0 +1,19 @@
+# To install on robot
+
+```
+git clone https://kitsunehosting.net/gitea/Kenwood/lewis-crawler /srv/crawler
+cd /srv/crawler/crawler_software/raspberry_pi
+make install
+```
+
+# Updating
+
+```
+cd /srv/crawler
+git pull
+```
+
+
+# Notes
+
+[Uart Stuff](https://www.reddit.com/r/raspberry_pi/comments/833qux/binary_file_tranfer_via_uart/)

companion_software/BasicBot.py

@@ -0,0 +1,23 @@
+from discord_webhook import DiscordWebhook
+from picamera import PiCamera
+from time import sleep
+
+
+def get_uptime():
+    with open('/proc/uptime', 'r') as f:
+        uptime_seconds = float(f.readline().split()[0])
+
+    return uptime_seconds
+
+webhookURL = "https://discord.com/api/webhooks/856609966404534272/TR9tnLq2sIGZoOeADNswmGRNlzBcqM5aKihfU6snVTP9WhSSoVVvi7nT6i-ZfZS7Hcqm"
+
+webhook = DiscordWebhook(url=webhookURL, content="Uptime: " + str( round( ((get_uptime() / 60) / 60 ), 2 )) + " hours")
+
+camera = PiCamera()
+sleep(3) # let iso settle out
+camera.capture('still.jpg')
+
+with open("still.jpg", "rb") as f:
+        webhook.add_file(file=f.read(), filename='still.jpg')
+response = webhook.execute() # Hit send
+

crawler_software/arduino/crawler_slave/Makefile

@@ -0,0 +1,38 @@
+# A makefile for building the robot's slave software
+# Uses arduino-cli
+#
+# Kitsune Scientific 2021
+
+# What board to build for and its core
+CORE     ?= arduino:avr
+FQBN     ?= arduino:avr:nano:cpu=atmega328old
+
+# What port to build on
+ifndef SERIAL_DEV
+  ifneq (,$(wildcard /dev/ttyUSB0))
+    SERIAL_DEV = /dev/ttyUSB0
+  else ifneq (,$(wildcard /dev/ttyACM0))
+    SERIAL_DEV = /dev/ttyACM0
+  else
+    SERIAL_DEV = unknown
+  endif
+endif
+
+all: requirements build upload
+
+build: requirements crawler_slave.ino
+	arduino-cli core install $(CORE)
+
+	arduino-cli compile -b $(FQBN) crawler_slave
+
+upload: requirements crawler_slave.ino
+	arduino-cli upload -b $(FQBN) crawler_slave -p $(SERIAL_DEV)
+
+requirements:
+	@if [ -e requirements.txt ]; \
+	then while read -r i ; do echo ; \
+		echo "---> Installing " '"'$$i'"' ; \
+		arduino-cli lib install "$$i" ; \
+	done < requirements.txt ; \
+	else echo "---> MISSING requirements.txt file"; \
+	fi

crawler_software/arduino/crawler_slave/crawler_slave.ino

@@ -10,27 +10,28 @@
 // This servo is used to wipe and clean the camera lens
 Servo windowWiperServo;
 
-// This is a variable capable of storing up to 4 items
-char instruction[32] = "";
-
-// Values for the id, and raw value of an instruction
-char * id;
-char * raw_value;
+// Variables populated over i2c from master
+int id;
+int val;
 
 void setup() {
+  // For debugging
+  //Serial.begin(115200);
+  
   // Attach the wiper servo to pin 9
   windowWiperServo.attach(9);
 
-  // This is only useful for debugging
-  //Serial.begin(9600);
-
   // This is the address the pi will speak to us at
   Wire.begin(0x4);
   
   // Call receiveEvent when data received                
   Wire.onReceive(receiveEvent);
 
-  //Serial.println("Finished Setup.");  
+  // Setup LED
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, LOW);
+
+  //Serial.println("Started");
 }
 
 // Just loop to keep the running code alive, and wait for events to happen.
@@ -40,27 +41,25 @@ void loop() {
 
 // This method runs when we receive a message
 void receiveEvent(int n) {
+  Wire.read(); // Remove smbus trash
+  if (true) { // Dont do anything if this is not true
+    id  = Wire.read(); // ID of the servo/device to access
+    val = Wire.read(); // Value to assign
 
-  for (int i = 0; i < n; i++) {
-    instruction[i] = Wire.read();
-    instruction[i + 1] = '\0'; //add null after ea. char
+    //Serial.println(id);
+    //Serial.println(val);
+  
+    switch(id) {
+      case 1:
+        windowWiperServo.write(val); // Set a val
+        delay(5); // pause for a moment
+        windowWiperServo.detach(); // Detach (stop moving) the servo
+        break;
+    }
   }
 
-  //RPi first byte is cmd byte so shift everything to the left 1 pos so temp contains our string
-  for (int i = 0; i < n; ++i)
-    instruction[i] = instruction[i + 1];
-
-  id = strtok (instruction, "-");
-  raw_value = strtok (NULL, "-");
-
-  int value = atoi(raw_value);
-
-  //Serial.println(id);
-  //Serial.println(value);
-
-  // Switch statements dont work on char *
-  if (strcmp(id,"WIPE") == 0) // if id, and WIPE cancel out
-  {
-    windowWiperServo.write(value);
+  // Prevents a bug where if bytes are left in buffer, arduino crashes.
+  while (Wire.available()) {
+    Wire.read();
   }
 }

crawler_software/arduino/crawler_slave/requirements.txt

@@ -0,0 +1 @@
+Servo

crawler_software/raspberry_pi/Makefile

@@ -0,0 +1,18 @@
+# A makefile for installing the robot's python
+# software and setting it up.
+#
+# Requires sudo
+#
+# Kitsune Scientific 2021
+
+all: install
+
+upload: crawler.service
+	sudo cp crawler.service /etc/systemd/system/crawler.service
+
+	sudo systemctl daemon-reload
+
+	sudo systemctl enable crawler.service
+	sudo systemctl start crawler.service
+
+	sudo systemctl status crawler

crawler_software/raspberry_pi/requirements.txt

@@ -1,2 +1,2 @@
 PySSTV
-picamera
+picamera

crawler_software/raspberry_pi/tests/color_compression/compress.py

@@ -0,0 +1,16 @@
+from PIL import Image
+import base64
+
+im = Image.open('still.jpg')
+
+# using Image.ADAPTIVE to avoid dithering
+for i in range(8, 0, -1):
+    out = im.convert('P', palette=Image.ADAPTIVE, colors=i)
+
+    out.save(f'out_{i}_bits.png')
+    
+    with open(f'out_{i}_bits.png', 'rb') as image_file:
+        encoded_string = base64.a85encode(image_file.read())
+
+    with open(f'out_{i}_bits.txt', 'w') as f:
+        f.write(encoded_string.decode('UTF-8'))

crawler_software/raspberry_pi/tests/color_compression/out_1_bits.txt

@@ -0,0 +1 @@
+M,6r;%14!\!!!!.8Ou6I!!!)I!!!&X#Qk&,!4s2MScA`m!)Q?g7AGd(zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz!.5pZZiC(+%V8a6Akbu".KBGK#QOi)zdSl>0!!-\'6pXdsSF+-I!<<*"_P$QtD$r"izzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz!!!"D(e?.W!V_LqE<#t=!(fUS7'8jaJc

crawler_software/raspberry_pi/tests/discordbot.py

@@ -5,18 +5,30 @@ from gps import *
 from smbus import SMBus
 import time
 
-addr = 0x8 # bus address
+addr = 0x4 # bus address
 bus = SMBus(1) # indicates /dev/ic2-1
 
 numb = 1
 
+def writeData(value):
+    byteValue = StringToBytes(value)    
+    bus.write_i2c_block_data(addr,0x00,byteValue) #first byte is 0=command byte.. just is.
+    return -1
+
+
+def StringToBytes(val):
+        retVal = []
+        for c in val:
+                retVal.append(ord(c))
+        return retVal
+
 try:
     for _x in range (0, 2):
-            for i in range(70, 130):
-                    bus.write_byte(addr, i)
+            for i in range(78, 130):
+                    writeData("WIPE-" + str(i))
                     time.sleep(0.02)
-            for i in range(130, 70, -1):
-                    bus.write_byte(addr, i)
+            for i in range(130, 78, -1):
+                    writeData("WIPE-" + str(i))
                     time.sleep(0.02)
 except OSError:
     print("Could not speak to ardujmemo")

crawler_software/raspberry_pi/tests/otp/otp_test.py

@@ -0,0 +1,25 @@
+from random import randrange
+import time, pyotp, datetime
+
+hotp = pyotp.HOTP(pyotp.random_base32())
+
+success = 0
+num_tries = 20
+
+for i in range(0,num_tries):
+    epoch = int(time.time())
+    code = hotp.at(epoch)
+    print('------------------------')
+    print(f'Made a code {code} at {epoch}, sending a simualted instruction')
+
+    waittime = randrange(5)
+    print(f'Instuction will take {waittime} seconds to receive or be recieved')
+    time.sleep(waittime)
+
+    if hotp.verify(code, epoch):
+        print(f'code:{code} verified')
+        success += 1
+    else:
+        print(f'code:{code} expired')
+
+print(f'Succeded {success} out of {num_tries} tries')

crawler_software/raspberry_pi/tests/stack_overflow.py

@@ -0,0 +1,20 @@
+import smbus
+import time
+import struct
+
+# for RPI version 1, use bus = smbus.SMBus(0)
+bus = smbus.SMBus(1)
+
+# This is the address we setup in the Arduino Program
+address = 0x04
+
+try:
+    for _x in range (0, 2):
+            for i in range(78, 130):
+                    bus.write_i2c_block_data(address, 0, [1, i])
+                    time.sleep(0.02)
+            for i in range(130, 78, -1):
+                    bus.write_i2c_block_data(address, 0, [1, i])
+                    time.sleep(0.02)
+except OSError:
+    print("Could not speak to ardujmemo")