Fix a bug where arduino would crash on incorrectly sized i2c payload

.gitignore

@@ -9,4 +9,3 @@ __pycache__
 *.png
 *.jpg
 *.wav
-*.pdf

README.md

@@ -0,0 +1,7 @@
+# To install on robot
+
+```
+git clone <url>
+cd lewis-crawler/crawler_software/raspberry_pi
+make install?
+```

companion_software/BasicBot.py

@@ -1,23 +0,0 @@
-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

@@ -1,70 +0,0 @@
-### DISCLAIMER
-### This is an example Makefile and it MUST be configured to suit your needs.
-### For detailed explanations about all the available options,
-### please refer to https://github.com/sudar/Arduino-Makefile/blob/master/arduino-mk-vars.md
-
-### PROJECT_DIR
-### This is the path to where you have created/cloned your project
-PROJECT_DIR       = $(shell dirname $(shell pwd))
-
-### ARDMK_DIR
-### Path to the Arduino-Makefile directory.
-ARDMK_DIR         = $(PROJECT_DIR)/Arduino-Makefile
-
-### ARDUINO_DIR
-### Path to the Arduino application and resources directory.
-ARDUINO_DIR       = /usr/share/arduino
-
-### USER_LIB_PATH
-### Path to where the your project's libraries are stored.
-USER_LIB_PATH     :=  $(realpath $(PROJECT_DIR)/lib)
-
-### BOARD_TAG & BOARD_SUB
-### For Arduino IDE 1.0.x
-### Only BOARD_TAG is needed. It must be set to the board you are currently using. (i.e uno, mega2560, etc.)
-# BOARD_TAG         = mega2560
-### For Arduino IDE 1.6.x
-### Both BOARD_TAG and BOARD_SUB are needed. They must be set to the board you are currently using. (i.e BOARD_TAG = uno, mega, etc. & BOARD_SUB = atmega2560, etc.)
-### Note: for the Arduino Uno, only BOARD_TAG is mandatory and BOARD_SUB can be equal to anything
-BOARD_TAG         = mega
-BOARD_SUB         = atmega2560
-
-### MONITOR_PORT
-### The port your board is connected to. Using an '*' tries all the ports and finds the right one. Choose one of the two.
-MONITOR_PORT      = /dev/ttyUSB*
-# MONITOR_PORT      = /dev/ttyACM*
-
-### MONITOR_BAUDRATE
-### It must be set to Serial baudrate value you are using.
-MONITOR_BAUDRATE  = 115200
-
-### AVR_TOOLS_DIR
-### Path to the AVR tools directory such as avr-gcc, avr-g++, etc.
-AVR_TOOLS_DIR     = /usr
-
-### AVRDUDE
-### Path to avrdude directory.
-AVRDUDE           = /usr/bin/avrdude
-
-### CFLAGS_STD
-CFLAGS_STD        = -std=gnu11
-
-### CXXFLAGS_STD
-### You can choose wich ever you like
-# CXXFLAGS_STD      = -std=gnu++11
-CXXFLAGS_STD      = -std=gnu++17
-
-
-### CPPFLAGS
-### Flags you might want to set for debugging purpose. Comment to stop.
-CXXFLAGS         += -pedantic -Wall -Wextra
-LDFLAGS          += -fdiagnostics-color
-
-### OBJDIR
-### Don't touch this!
-### This is were you put the binaries you just compile using 'make'
-CURRENT_DIR       = $(shell basename $(CURDIR))
-OBJDIR            = $(PROJECT_DIR)/build/$(CURRENT_DIR)/$(BOARD_TAG)
-
-### path to Arduino.mk, inside the ARDMK_DIR, don't touch.
-include $(ARDMK_DIR)/Arduino.mk

crawler_software/arduino/crawler_slave/crawler_slave.ino

@@ -0,0 +1,63 @@
+/* Crawler Slave
+ *  
+ *  This code runs on the crawler i2c network
+ *  and provides a cleaner, less CPU intensive control over PWM devices.
+ */
+
+#include <Wire.h>
+#include <Servo.h>
+
+// 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(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.
+void loop() {
+  delay(50);
+}
+
+// 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
+
+    //Serial.println(id);
+    //Serial.println(val);
+  
+    switch(id) {
+      case 1:
+        windowWiperServo.write(val);
+        break;
+    }
+  }
+
+  // Prevents a bug where if bytes are left in buffer, arduino crashes.
+  while (Wire.available()) {
+    Wire.read();
+  }
+}

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/discordbot.py

@@ -0,0 +1,73 @@
+from discord_webhook import DiscordWebhook
+from picamera import PiCamera
+from time import sleep
+from gps import *
+from smbus import SMBus
+import time
+
+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(78, 130):
+                    writeData("WIPE-" + str(i))
+                    time.sleep(0.02)
+            for i in range(130, 78, -1):
+                    writeData("WIPE-" + str(i))
+                    time.sleep(0.02)
+except OSError:
+    print("Could not speak to ardujmemo")
+
+def get_uptime():
+    with open('/proc/uptime', 'r') as f:
+        uptime_seconds = float(f.readline().split()[0])
+
+    return uptime_seconds
+
+def getPositionData(gps):
+    location = [None]
+    while(location[0] == None):
+        print("Trying again")
+        nx = gpsd.next()
+        # For a list of all supported classes and fields refer to:
+        # https://gpsd.gitlab.io/gpsd/gpsd_json.html
+        if nx['class'] == 'TPV':
+            latitude = getattr(nx,'lat', "Unknown")
+            longitude = getattr(nx,'lon', "Unknown")
+            #print "Your position: lon = " + str(longitude) + ", lat = " + str(latitude)
+            location = [latitude, longitude]
+    return location
+
+gpsd = gps(mode=WATCH_ENABLE|WATCH_NEWSTYLE)
+
+loc = getPositionData(gpsd)
+
+webhookURL = "https://discord.com/api/webhooks/856609966404534272/TR9tnLq2sIGZoOeADNswmGRNlzBcqM5aKihfU6snVTP9WhSSoVVvi7nT6i-ZfZS7Hcqm"
+
+print(loc[0])
+print(loc[1])
+webhook = DiscordWebhook(url=webhookURL, content="Uptime: " + str( round( ((get_uptime() / 60) / 60 ), 2 )) + " hours. Lat is " + str(loc[0]) + ", long is " + str(loc[1]))
+
+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/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")

crawler_software/raspberry_pi/tests/test_i2c.py

@@ -0,0 +1,35 @@
+#  Raspberry Pi Master for Arduino Slave
+#  i2c_master_pi.py
+#  Connects to Arduino via I2C
+  
+#  DroneBot Workshop 2019
+#  https://dronebotworkshop.com
+
+from smbus import SMBus
+import time
+
+addr = 0x8 # bus address
+bus = SMBus(1) # indicates /dev/ic2-1
+
+numb = 1
+
+print ("Enter num")
+
+for _x in range (0, 4):
+	for i in range(76, 130):
+		bus.write_byte(addr, i)
+		time.sleep(0.02)
+	for i in range(130, 76, -1):
+                bus.write_byte(addr, i)
+                time.sleep(0.02)
+
+#while numb == 1:
+#
+#	ledstate = input(">>>>   ")
+#
+#	if ledstate == "1":
+#		bus.write_byte(addr, 0x1) # switch it on
+#	elif ledstate == "0":
+#		bus.write_byte(addr, 0x0) # switch it on
+#	else:
+#		numb = 0

crawler_software/raspberry_pi/tests/test_tx.py

@@ -0,0 +1,12 @@
+import RPi.GPIO as GPIO # Import Raspberry Pi GPIO library
+from time import sleep # Import the sleep function from the time module
+
+GPIO.setwarnings(False) # Ignore warning for now
+GPIO.setmode(GPIO.BOARD) # Use physical pin numbering
+GPIO.setup(12, GPIO.OUT, initial=GPIO.LOW) # Set pin 8 to be an output pin and set initial value to low (off)
+
+while True: # Run forever
+ GPIO.output(12, GPIO.HIGH) # Turn on
+ sleep(1) # Sleep for 1 second
+ GPIO.output(12, GPIO.LOW) # Turn off
+ sleep(1) # Sleep for 1 second