Re: [ts-7000] Webserver access to /dev/mem

[Andrew Bealing <>]

Is your app running as root?  I think it needs to be to have O_RDWR access
to the memory space.



                                                                                
                                                               
                      "Keith Gilman"                                            
                                                               
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                      Sent by:                 Subject:  [ts-7000] Webserver 
access to /dev/mem                                                
                                                               
                                                               
                      ps.com                                                    
                                                               
                                                                                
                                                               
                                                                                
                                                               
                      04/10/2005 05:27                                          
                                                               
                      p.m.                                                      
                                                               
                      Please respond to                                         
                                                               
                      ts-7000                                                   
                                                               
                                                                                
                                                               
                                                                                
                                                               




Newbie to Linux trying to set up a webserver with the TS7250. I have
the server up but I want to be able to read the onboard temperature.
I'm using the test-cgi script that shipped with the board with the
following two lines added:

echo UPTIME=`uptime`
echo TEMP=`./tempSensor' #tempSensor.c downloaded from the TS website

The uptime works as expected but the tempSensor logs the following
error to the apache error logger:

tempSensor.c:42 main:Assertion 'fd != -1' failed.

The source is:

             int fd = open("/dev/mem", O_RDWR);
             assert(fd != -1);

Thanks in advance for any advice
-Keith









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