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/)

crawler_software/arduino/crawler_slave/Makefile

@@ -5,7 +5,7 @@
 
 # What board to build for and its core
 CORE     ?= arduino:avr
-FQBN     ?= arduino:avr:nano
+FQBN     ?= arduino:avr:nano:cpu=atmega328old
 
 # What port to build on
 ifndef SERIAL_DEV
@@ -20,13 +20,13 @@ endif
 
 all: requirements build upload
 
-build: crawler_slave.ino
+build: requirements crawler_slave.ino
 	arduino-cli core install $(CORE)
 
 	arduino-cli compile -b $(FQBN) crawler_slave
 
-upload:
-	echo "Would install to $(SERIAL_DEV)"
+upload: requirements crawler_slave.ino
+	arduino-cli upload -b $(FQBN) crawler_slave -p $(SERIAL_DEV)
 
 requirements:
 	@if [ -e requirements.txt ]; \

crawler_software/arduino/crawler_slave/crawler_slave.ino

@@ -10,16 +10,28 @@
 // This servo is used to wipe and clean the camera lens
 Servo windowWiperServo;
 
+// 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 the address the pi will speak to us at
-  Wire.begin(0x8);
+  Wire.begin(0x4);
   
   // Call receiveEvent when data received                
   Wire.onReceive(receiveEvent);
-  
+
+  // 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.
@@ -28,9 +40,26 @@ void loop() {
 }
 
 // This method runs when we receive a message
-void receiveEvent(int howMany) {
-  while (Wire.available()) { // loop through all but the last
-    int pos = Wire.read(); // receive byte as a int
-    windowWiperServo.write(pos);
+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
+
+    //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;
+    }
+  }
+
+  // Prevents a bug where if bytes are left in buffer, arduino crashes.
+  while (Wire.available()) {
+    Wire.read();
   }
 }

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/crawler.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Crawler service overseer, manages running main crawler software
+After=multi-user.target
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/python /srv/crawler/crawler.py
+
+[Install]
+WantedBy=multi-user.target

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")