Qpace-RaspberryPi

Repository for QPACE's RaspberryPi

IMPORTANT

• The Pi (CCDR) uses the chip SC16IS740 to communicate with the WTC sub-system. The chip converts I2C to UART (vise-versa). The hardware for the chip is different for the Flight Model and the Developement Board. The Flight Model uses a crystal frequency of 1843200 and the Development Board currently uses 11059200. Please revert the software define XTAL_FREQ back to Flight Model Configuration before launch! (currently defined in qpaceMain.py)

System Logging / Debug Printing

While developing code for the Pi/CCDR sub-system please use the sysargv feature to display a variety of information about the system. Do not use startupQPACE.sh anymore. Use python3 qpaceMain.py *{} from now on.

User selected logging modes

• no arguments will print only sys messages
• v - verbose (prints everything)
• e - errors
• w - warnings
• i - info
• d - debug
• r - results
• s - successes
• f - failures

Creating a Log

To produce a log message you must use the functions provided. Each sysargv or logging mode corresponds to a Logger function inside of the qpaceLogger.py file.

• logSystem("Some String") - Sys logs will always be printed! Should be used to print sys config / init loggings
• logError("Some String") - Critical Errors
• logWarning("Some String") - Warnings about system features or function uses
• logInfo("Some String") - Useful for mid-function data.
• logDebug("Some String") - Useful when developing a specific feature
• logResults("Some String") - Typically for byte arrays. Use this for especially for COMMS data!
  if you wish to display bytearray data (example 128-byte packets) please use ''.join(map(chr, someByteArray))
• logSuccess("Some String") - Useful to see if process executed correctly
• logFailure("Some String") - Useful to see if process didn't execute correctly

Color Scheme

Example(s) of Use

python3 qpaceMain.py e w d
#This will print errors, warnings, and debug messages (and of course sys logs)

logger.LogDebug("Hello")
logger.LogResults("Data")
-> Hello

python3 qpaceMain.py v
#This will print everything that enters the logging functions!