This is the the repository for our solar tracking capstone project.
To set up the Raspberry pi, perform the following steps after updating:
sudo apt-get update
The pandas package in setuptools with pip install is not the recommend method, so install manually using the following
on a linux based system:
sudo apt-get install python-pandas
To install dependencies for the python code base and creating egg info for the python interpreter, run the following commands, (recommend install in step 1b):
If you would like to develop on the device, run this command to ensure symbolic links point to the source code in this repository. This allows the developer to make changes here without having to re-install the python repository
sudo python setup.py develop
If you would like to perform a fresh system install, perform this command. This will generate egg info under site-packages, meaning src files are copied
sudo python setup.py install
Begin by opening a termineal and performing the following steps:
sudo raspi-config
Interfacing Options > I2C > Yes
Interfacing Options > SPI > Yes
sudo reboot
lsmod | grep i2c_
You should now see something come up. You can also do the following to see devices:
sudo i2cdetect -y 1
You should only see a single I2C device at address 0x68
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Reference https://learn.adafruit.com/program-an-avr-or-arduino-using-raspberry-pi-gpio-pins/installation
NOTE: If the uC is swapped or the pins are changed from those delivered with the schematic, the Makefile
along with the programmer pi_1 in the avrdude_gpio.conf file will need to be adjusted.
sudo apt-get install gcc-avr binutils-avr avr-libc
Install AVR dude so that .hex files can be programmed to the uC in charge of the power circuit (recommend install in step 1a).
sudo apt-get install avrdude
avrdude -v
You should see an output similar to this:
avrdude: Version 6.1, compiled on Oct 10 2018 at 01:07:09
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/usr/local/etc/avrdude.conf"
User configuration file is "/home/pi/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
avrdude: no programmer has been specified on the command line or the config file
Specify a programmer using the -c option and try again
Check using this command that you can talk to ATTiny85A:
cd dev/
sudo avrdude -p t84 -C avrdude_gpio.conf -c pi_hat -e -v
If this does not work, double check that the pins used below match the Pi's BCM pin numbers. Double check schematic and wiring as well:
# Linux GPIO configuration for avrdude.
# Change the lines below to the GPIO pins connected to the AVR.
programmer
id = "pi_hat";
desc = "Use the Linux sysfs interface to bitbang GPIO lines";
type = "linuxgpio";
reset = 23;
sck = 17;
mosi = 22;
miso = 27;
;
When it works, you should now see something like the following:
avrdude: Version 6.1, compiled on Oct 10 2018 at 01:07:09
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/home/pi/avrdude_gpio.conf"
User configuration file is "/root/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : unknown
Using Programmer : pi_1
AVR Part : ATtiny84
Chip Erase delay : 4500 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 6 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 4500 4500 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
Programmer Type : linuxgpio
Description : Use the Linux sysfs interface to bitbang GPIO lines
Pin assignment : /sys/class/gpio/gpio{n}
RESET = 23
SCK = 17
MOSI = 22
MISO = 27
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e930c
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: erasing chip
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: Fuses OK (E:FF, H:DF, L:62)
avrdude done. Thank you.
cd dev/
make clean
make install
Make sure that you see a similar success reported like so:
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e930c
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "blinky.hex"
avrdude: input file blinky.hex auto detected as Intel Hex
avrdude: writing flash (68 bytes):
Writing | ################################################## | 100% 0.13s
avrdude: 68 bytes of flash written
avrdude: verifying flash memory against blinky.hex:
avrdude: load data flash data from input file blinky.hex:
avrdude: input file blinky.hex auto detected as Intel Hex
avrdude: input file blinky.hex contains 68 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 0.10s
avrdude: verifying ...
avrdude: 68 bytes of flash verified
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: Fuses OK (E:FF, H:DF, L:62)
avrdude done. Thank you.
The board is now programmed.
Connect the Raspberry Pi to the provided pi hat expansion along with wiring the unit. Run the following to test the system:
cd ~/solar_tracking_project
sudo python setup.py test
After the tests have passed, no further configuration is required and the system is ready to grow some broccoli!
The software is capable of running in numerous different modes which are self-explanatory for the most part. To run the software in the normal operation mode, run the following:
sudo python runner/main.py
To boot the software into the development menu for debugging and testing isolated aspects of the system:
sudo python runner/main.py -m
Finally, to understand the different runtime options for the software, check the help descriptions:
sudo python runner/main.py -h