[Soekris] 5501 sensors vs 4801 sensors

[Soren Kristensen]

Hi,

AVI6 is connected to 2.5V power rail, used by the DDR memory chips, 
otherwise it's like the net4801.


Best Regards,


Soren Kristensen

CEO & Chief Engineer
Soekris Engineering, Inc.



Bad Dog wrote:
> I have been having trouble reading the sensors using lmsensors on my 5501 running ubuntu gutsy.  I looked around quite a bit, but haven't found anything authoritative regarding which registers are which on the 5501.  I modified the env4801 program from bsd to run on linux, which I have included below.  To compile it, just run 
> 
> 
> gcc -static env4801.c -o env4801
> 
> I did the absolute minimum to get this working so that I could compare 
> it with lmsensors output.  If I can resolve the issues below, and there 
> is interest, I will clean it up.
> 
> What is driving me crazy is this:
> 
> VREF = 1.235  V245 = 2.450
> Temp 2 (status=0x81)   38 C
> Volt  1 VCORE 106  1.253 V scale  1.0   1.253 V +/- 0.0118 V
> Volt  2 VCC   217  2.565 V scale  2.0   5.130 V +/- 0.0236 V
> Volt  3 VPWR   52  0.615 V scale 20.1  12.354 V +/- 0.2376 V
> Volt  4 +12V  214  2.529 V scale  4.8  12.217 V +/- 0.0571 V
> Volt  5 -12V  215  2.541 V scale 19.2 -11.810 V +/- 0.2268 V
> Volt  6 GND   224  2.648 V scale  1.0   2.648 V +/- 0.0118 V
> Volt  7 Vsb   142  1.678 V scale  2.0   3.357 V +/- 0.0236 V
> Volt  8 Vdd   142  1.678 V scale  2.0   3.357 V +/- 0.0236 V
> Volt  9 Vbat  255  3.014 V scale  1.0   3.014 V +/- 0.0118 V
> Volt 10 AVdd  141  1.667 V scale  2.0   3.333 V +/- 0.0236 V
> 
> 
> I find it hard to believe that my GND potential is at 2.648 V. The same 
> program running on a 4801 yields the following:
> 
> VREF = 1.235  V245 = 2.450
> Temp 2 (status=0x81)   57 C
> Volt  1 VCORE 169  1.997 V scale  1.0   1.997 V +/- 0.0118 V
> Volt  2 VCC   211  2.494 V scale  2.0   4.988 V +/- 0.0236 V
> Volt  3 VPWR   50  0.591 V scale 20.1  11.878 V +/- 0.2376 V
> Volt  4 +12V  208  2.458 V scale  4.8  11.874 V +/- 0.0571 V
> Volt  5 -12V  210  2.482 V scale 19.2 -12.944 V +/- 0.2268 V
> Volt  6 GND     0  0.000 V scale  1.0   0.000 V +/- 0.0118 V
> Volt  7 Vsb   139  1.643 V scale  2.0   3.286 V +/- 0.0236 V
> Volt  8 Vdd   139  1.643 V scale  2.0   3.286 V +/- 0.0236 V
> Volt  9 Vbat  255  3.014 V scale  1.0   3.014 V +/- 0.0118 V
> Volt 10 AVdd    0  0.000 V scale  2.0   0.000 V +/- 0.0236 V
> 
> 
> So, methinks something is different between these two boards, else there 
> is something very funny with the GND on the 5501.
> 
> So, anyone have a description of how things are actually connected in 
> the 5501, or have changes to the code to make it accurate?
> 
> Thanks -- any help appreciated!
> 
> -bd