abc123me/nasa_dsn

Code for the NASA Deep space network CM Xband upgrade

Main

Debugging

When adding the following to the top of main.py it will put everything in a "debug" mode where all status pins are ignored and no GPIO pins are actually set

#IMPORTANT: COMMENT EVERYTHING FROM HERE OUT if you are testing/running the code on the real thing
import iol
iol.MAKE_EMULATED()           #Sets all GPIO pins, and Baseball switch to emulated mode
EMULATING_TRANSLATOR = True   #Modifies the isTranslatorOn to return the correct value every time (ignoring status pins)
EMULATING_NOISE_SOURCE = True #Modifies the isNoiseSourceOn to return the correct value every time (ignoring status pins)
#TO HERE

iol Package (and asc. libraries)

The iol package stands for Input Output Libraries (iol), meaning it is the single codebase for ALL of the input/output related code, it currently includes the libraries for reading from the ADC, Baseball switches, and GPIO pins

iol.pygpio

For GPIO use pygpio since it is currently working and is simple to use, heres some example code:

from iol.pygpio import GPIOPin           #Imports the pygpio.py file, make sure it is in the same directory as your script!
pin = GPIOPin(INTEGER_PIN_NUMBER)        #Initializes the GPIO pin
pin.setMode(BOOLEAN_IS_OUTPUT)           #Sets the mode of the GPIO pin, False for input, True for output
pin.write(BOOLEAN_VALUE)                 #Only works for output pins
pin.digitalRead()                        #Only works for input pins

Also, The GPIO library requires superuser privledges so use sudo or run as root (or creating a gpio group and adding the user to that) An example led blink script blink_example.py was created to demonstrate how to use the GPIO library

As an extension of the GPIO library I created the Baseball library for controlling the three baseball switches that are nescessary, this will deal with preventing the positions from becoming locked, also in no way can a software bug cause the switch to not activated due to the redundancy added by first setting both of the position pins to LOW then bringing the required pin to HIGH

iol.baseball

from iol.baseball import BaseballSwitch
setAPin = 9                              #A position indicator
setBPin = 10                             #B position indicator
posAPin = 11                             #Output pin to control the A coil
posBPin = 12                             #Output pin to control the B coil
baseball = BaseballSwitch("The switches name used for debugging", setAPin, setBPin, posAPin, posBPin) #Initialize the switch

baseball.initGPIO() # This initializes the GPIO pins of the switch (using iol.pygpio)

baseball.setPosition("a")                #Puts the switch in the A position
baseball.setPosition(True)               #Puts the switch in the A position
baseball.setPosition("b")                #Puts the switch in the B position
baseball.setPosition(False)              #Puts the switch in the B position
baseball.swapPos()                       #This will swap it's position
baseball.getPosition()                   #Gets the position (returns an "a" or "b")
baseball.reset()                         #Resets both setting pins to False
baseball.setSwitchingDelay(time)         #Sets the switching delay
baseball.getDelay()                      #Gets the switching delay in seconds