AMC 68VZ328 software manual Using NFS to streamline the development cycle

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cd ~/dimmpci mkdir source cd source

Create a simple ‘hello world’ C program called ‘hello.c’ such as this:

#include <stdio.h>

void main() { printf(“Hello World\n”);

}

Now run the GCC compiler to create the binary file. Links should be set up so the compiler is in the path. If not add ‘/opt/uClinux/bin’ to the path and everything should work fine.

m68k-pic-coff-gcc hello.c -o hello

Once the hello world program has been successfully compiled, copy the resulting binary file to the romdisk directory and create a new image file.

cp ~/dimmpci/source/hello /opt/fs/romdisk/usr cd /opt/fs

make imagez.bin

Now program the image file to the dimmPCITM CPU module and connect to it using the serial port. Run the hello program in the root directory and, sure enough, it will print out ‘Hello World’.

You can use a ‘Makefile’ as well to automate the compiling process if you have multiple files or special options, etc.

Using NFS to streamline the development cycle

If reprogramming of the dimmPCITM CPU module were necessary every time changes were made, more time would be spent reprogramming than writing source code. Assuming that both the linux PC and the dimmPCITM development board are connected via ethernet the solution is to make part of the computer’s hard drive available on the dimmPCI filesystem using NFS. First an entry will need to be added to the ‘/etc/exports’ file of the host computer similar to the following:

www.amctechcorp.com

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Contents DimmPCITM 68VZ328 Hardware / Software Manual Copyright notice Contact InformationDimmPCITM Software Development Kit NETdimm Developers Kit Quick Start Guide Etc/issue Page This page left intentionally blank Launching Linux at the embedded IntroductionPage System Requirements What’s on the CD?This page left intentionally blank Backplane FeaturesUC68VZ328 Embedded Microcontroller CPU ModuleCPU Module Description General DescriptionBackplane Description CPU Architecture ArchitectureMCU Core System MemoryMemory Map Memory Map MemoryLayout of the Flash and Flash Schematic Layout of the Flash Sdram Viewing the Ethernet MAC ID Ethernet ControllerNETdimm Ethernet Schematic IOdimm Digital I/ODigital Output Schematic Analog Output Schematic Analog Input Schematic Digital to Analog Converter Schematic RS-232 WatchdogHighlights Usage LCD Interface LCD SchematicDimmPCITM signals for System Slot DimmPCITM Signal DescriptionsPCI Maximum Ratings Electrical CharacteristicsThis page left intentionally blank Before beginning Installing the dimmPCI TM SystemInstallation Builder KitConfiguring and compiling the µClinux kernel Customizing the filesystem Creating a ROM imageAccessing your dimmPCI development board via the serial port Accessing the Network Static IPDynamic IP Compiling your own source code Accessing your dimmPCI development board via telnetUsing NFS to streamline the development cycle Home directory/dimmpci/source Method Updating Applications on your dimmPCI moduleThis page left intentionally blank Loader Programming the uC68VZ328Oops Cd /opt/boottools/oops Oops -p /dev/ttyS0 -k kernel.bin Page Page This page left intentionally blank Sample Code AppendixClose the file afterwards fclose filehandle Page Longwatchdogid #include unistd.h #include stdio.h int main void This page left intentionally blank Journalling Flash File System Umount /usr Sbin/mkjffs /dev/flash0 Page This page left intentionally blank Development Tool Chains Normal Usage of the PIC-COFFTool Chain Page This page left intentionally blank Introduction D1 Application NoteKernel and Filesystem Configuration YES Kernel and Filesystem Configuration Flow ChartAvailable Digital I/O Pins List of all available digital I/O pins Dimmio structure description Programming StructureDigital I/O Functions Page In0 In1 In2 In3 In4 In5 In6 In7 Out0 Even Parity Sample ProgramsMknod io1 c 123 Page This page left intentionally blank Abstract D2 Application NoteRequirements Kernel ConfigurationAgain, from the main menu under Network device support Kernel Configuration Flow Chart AtCommandPrompt Filesystem Configuration Cd /opt/filesystem name make clean Make Modifications to ‘rc’ file Filesystem Configuration Flow ChartTesting Host machine ConfigurationPage This page left intentionally blank Application Note Using Multiple NETdimm ModulesInetd based Server & Client Simple Server & ClientPage This page left intentionally blank IOdimm Using Analog and Digital I/O withCd /opt Cp -Rpdx newfs iodimmmfs ADC MAX1203 Category Channel Backplane System Backplane Header Slot Pin Available I/O PinsDigital Inputs and Outputs Functions+ Κ Iodimm/dio Samples/cardspecific/iodimm/dio Page This page left intentionally blank Purpose & basic format of files for oops Using OopsUpload & Flash Download Upload & RunCommon oops program arguments Appendix This page left intentionally blank 104 Licensing, Copyrights & Liability DimmPCITM Software Development Kit DistributionPreamble 106 107 108 109 Appendix How to Apply These Terms to Your New Programs No Warranty111 112 113 This page left intentionally blank 114 References/ Suggested Reading