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
-----------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include <sys/types.h>
#include <sys/cdefs.h>
#include <sys/io.h>
#define VREF 1.235
#define V245 2.45
#define VDIV(a, b) (((a) + (b)) / (a))
struct avi {
const char *name;
double offset;
double scale;
} avi[14] = {
{ "avi0", 0.0, 1.0 },
{ "VCORE", 0.0, 1.0 },
{ "VCC", 0.0, VDIV(10.0, 10.0) },
{ "VPWR", 0.0, VDIV(10.0, 191.0) },
{ "+12V", 0.0, VDIV(10.0, 38.3) },
{ "-12V", 3.33, VDIV(3.32, 60.4) },
{ "GND", 0.0, 1.0 },
{ "Vsb", 0.0, 2.0 },
{ "Vdd", 0.0, 2.0 },
{ "Vbat", 0.0, 1.0 },
{ "AVdd", 0.0, 2.0 },
{ "TS1", 0.0, 1.0 },
{ "TS2", 0.0, 1.0 },
{ "TS3", 0.0, 1.0 }
};
#define INB(x) inb(x)
#define OUTB(x,y) outb(y,x)
int
main(int argc, char **argv)
{
FILE *f;
int i, j, atms, avlm;
struct avi *avp;
double a;
double vref = VREF;
if(iopl(3)){
printf("Sorry, you must be root to tickle these registers.\n");
exit(0);
}
OUTB(0x2e, 0x20);
i = INB(0x2f);
if (i != 0xe9)
errx(1, "Expected 0xe9 for SuperIO ID, got %x", i);
OUTB(0x2e, 0x7); OUTB(0x2f, 0xe);
OUTB(0x2e, 0x60); atms = INB(0x2f) * 256;
OUTB(0x2e, 0x61); atms |= INB(0x2f);
OUTB(0x2e, 0x30); i = INB(0x2f);
if (!(i & 1))
errx(1, "TMS not enabled");
OUTB(0x2e, 0x7); OUTB(0x2f, 0xd);
OUTB(0x2e, 0x60); avlm = INB(0x2f) * 256;
OUTB(0x2e, 0x61); avlm |= INB(0x2f);
OUTB(0x2e, 0x30); i = INB(0x2f);
if (!(i & 1))
errx(1, "VLM not enabled");
if (argc == 2 && !strcmp(argv[1], "-i")) {
/* Magic init sequence from page 208 */
OUTB(atms + 0x8, 0x00);
OUTB(atms + 0x9, 0x0f);
OUTB(atms + 0xa, 0x08);
OUTB(atms + 0xb, 0x04);
OUTB(atms + 0xc, 0x35);
OUTB(atms + 0xd, 0x05);
OUTB(atms + 0xe, 0x05);
OUTB(atms + 8, 0);
for(i = 0; i < 3; i++) {
OUTB(atms + 9, i);
OUTB(atms + 0xa, 1);
}
OUTB(avlm + 7, 0x10);
OUTB(avlm + 8, 0);
for(i = 0; i < 10; i++) {
OUTB(avlm + 9, i);
OUTB(avlm + 0xa, 1);
}
for(; i < 14; i++) {
OUTB(avlm + 9, i);
OUTB(avlm + 0xa, 0);
}
return (0);
}
if (argc >= 2 && !strcmp(argv[1], "-r")) {
vref = strtod(argv[2], NULL);
}
printf("VREF = %.3f V245 = %.3f\n", vref, V245);
for(i = 2; i < 3; i++) {
OUTB(atms + 9, i);
printf("Temp %d (status=0x%2x) %4d C\n", i,
INB(atms + 0xa), (char)INB(atms + 0xb));
}
#if 0
/* The offset for the -12V is measured on AD10 */
i = 10;
avp = &avi[i];
OUTB(avlm + 9, i);
j = INB(avlm + 0x0b);
a = vref * V245 * j / 256.0;
avi[5].offset = a * avp->scale;
#endif
for(i = 1; i < 11; i++) {
avp = &avi[i];
OUTB(avlm + 9, i);
j = INB(avlm + 0x0b);
a = vref * V245 * j / 256.0;
printf(
"Volt %2d %-5s %3d %6.3f V scale %4.1f %7.3f V +/- %6.4f
V\n",
i, avp->name, j, a,
avp->scale, (a - avp->offset) * avp->scale + avp->offset,
vref * V245 / 256.0 * avp->scale);
}
return (0);
}
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