CoffeePi/CoffeeCode

Speedmanager Readme

Requirements: wiringpi

Usage Speedmanager

~$ ./speedmanager -h
Speedmanager for Raspberry Pi by Philipp Hinz - Build number 921 short GUID 0x3c0
Usage: /opt/hinz-ba-can/code/Pi code/Debug/speedmanager [-hvVteilfads] [-r ohms]
        -h              Prints this help
        -v              Sets verbose output, can be used multiple times
        -r ohms         Sets the start resistance of the digital potentiometer
        -V              Prints only the version and exits
        -t              Terminates the CAN Bus with a connected DiPoti
        -e              Echoes all incoming CAN messages (Debugging)
        -i              Increases the Wiper of the DigiPot every second
        -l              Sets the MCP2515 to listen only mode on shutdown
        -f              Forces a speedtest after startup
        -s              Suppress a speedtest in case of errors
        -a              Add new nodes if not known in file nodes
        -d              Prints a timestamp in front of every message
Listening to the following signals:
        SIGUSR1(10)     Prints monitor data of all nodes
        SIGHUP(1)       Runs a speedtest starting at default speed

Debug levels:

1. Basic debugging, process informations
2. CAN messages
3. CAN speedchanges
4. SQL querys
5. CAN error states
6. SPI communication

Usage canspeed

This helper programm outputs the register configuration for different CAN controllers. So far supported: MCP2510/15 and AT90CAN.

~$ ./canspeed -h
Usage: /opt/hinz-ba-can/code/Pi code/Debug/canspeed -c Clockspeed -t Type [-ro] [-b Baudrate] [-q #TQ]
        -h              Prints this help
        -c              Cockspeed in MHz, 16 MHz recommended
        -t              CAN controller type (1 - MCP2510/15, 2 - AT90CAN)
        -b              Calculate settings for a single baudrate in bit/s
        -q              Number of TQ per bit, default is 16
        -r              Output register settings (use without -o)
        -o              Output the constant definitions for the controller
Example: ./canspeed -c 16 -t 1 -o

Sourcecode

The program source is distributed between multiple files. Please refer to the documentation of the files for their content. The project is written in C++11 in Ecplise under a cross compiler environment. See Makefiles in Debug/ for cross compiler makefiles. See Release/ for Makefiles for Raspberry Pi.

For compiling on Raspberry Pi 2:

cd Release
make all -j 4

(-j 4 runs make with up to 4 threads)