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Allow probing range selection.

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Fix quick writes and byte reads being swapped in default mode.
        Misc fixes.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2501 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare committed 2004-05-01 14:43:38 +00:00
1 parent 9367184cd4
commit e259edf917
1 file changed
+61 -16
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prog/detect/i2cdetect.c
+61 -16
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@@ -37,12 +37,15 @@ void print_i2c_busses(int);
void help(void)
{
fprintf(stderr,"Syntax: i2cdetect [-f] [-q|-r] I2CBUS\n");
fprintf(stderr," I2CBUS is an integer\n");
fprintf(stderr," With -f, scans all addresses (NOT RECOMMENDED)\n");
fprintf(stderr," With -q, uses only quick write commands for probing (NOT RECOMMENDED)\n");
fprintf(stderr," With -r, uses only read byte commands for probing (NOT RECOMMENDED)\n");
fprintf(stderr," i2cdetect -l lists installed busses only\n");
fprintf(stderr,
"Syntax: i2cdetect [-f] [-q|-r] I2CBUS [FIRST LAST]\n"
" I2CBUS is an integer\n"
" With -f, scans all addresses (NOT RECOMMENDED)\n"
" With -q, uses only quick write commands for probing (NOT RECOMMENDED)\n"
" With -r, uses only read byte commands for probing (NOT RECOMMENDED)\n"
" If provided, FIRST and LAST limit the probing range.\n"
" i2cdetect -l lists installed busses only\n");
print_i2c_busses(0);
}
@@ -106,9 +109,9 @@ int scan_i2c_bus(int file, const int mode, const int first, const int last)
default:
if ((i+j >= 0x30 && i+j <= 0x37)
|| (i+j >= 0x50 && i+j <= 0x5F))
res = i2c_smbus_write_quick(file, I2C_SMBUS_WRITE);
else
res = i2c_smbus_read_byte(file);
else
res = i2c_smbus_write_quick(file, I2C_SMBUS_WRITE);
}
if (res < 0)
@@ -128,8 +131,8 @@ int main(int argc, char *argv[])
int i = 1, i2cbus = -1, file, res;
char filename[20];
long funcs;
int force = 0;
int mode = MODE_AUTO;
int first = 0x03, last = 0x77;
while(i2cbus == -1) {
@@ -150,7 +153,8 @@ int main(int argc, char *argv[])
}
if(!strcmp(argv[i], "-f")) {
force = 1;
first = 0x00;
last = 0x7F;
i++;
} else
if(!strcmp(argv[i], "-q")) {
@@ -176,13 +180,55 @@ int main(int argc, char *argv[])
exit(1);
}
if ((i2cbus < 0) || (i2cbus > 0xff)) {
fprintf(stderr,"Error: I2CBUS argument out of range!\n");
fprintf(stderr,
"Error: I2CBUS argument out of range (0-255)!\n");
help();
exit(1);
}
i++;
}
}
/* read address range if present */
if (i+2 == argc) {
int tmp;
tmp = strtol(argv[i], &end, 0);
if (*end) {
fprintf(stderr,
"Error: FIRST argment not a number!\n");
help();
exit(1);
}
if (tmp < first || tmp > last) {
fprintf(stderr,
"Error: FIRST argument out of range (0x%02x-0x%02x)!\n",
first, last);
help();
exit(1);
}
first = tmp;
tmp = strtol(argv[i+1], &end, 0);
if (*end) {
fprintf(stderr,
"Error: LAST argment not a number!\n");
help();
exit(1);
}
if (tmp < first || tmp > last) {
fprintf(stderr,
"Error: LAST argument out of range (0x%02x-0x%02x)!\n",
first, last);
help();
exit(1);
}
last = tmp;
} else if (i != argc) {
help();
exit(1);
}
file = open_i2c_dev(i2cbus, filename);
if (file < 0) {
if (errno == ENOENT) {
@@ -221,16 +267,15 @@ int main(int argc, char *argv[])
fprintf(stderr," WARNING! This program can confuse your I2C bus, "
"cause data loss and worse!\n");
fprintf(stderr," I will probe file %s%s\n", filename,
fprintf(stderr, " I will probe file %s%s.\n", filename,
mode==MODE_QUICK?" using quick write commands":
mode==MODE_READ?" using read byte commands":"");
fprintf(stderr, " I will probe address range 0x%02x-0x%02x.\n",
first, last);
fprintf(stderr," You have five seconds to reconsider and press CTRL-C!\n\n");
sleep(5);
if (force)
res = scan_i2c_bus(file, mode, 0x00, 0x7F);
else
res = scan_i2c_bus(file, mode, 0x03, 0x77);
res = scan_i2c_bus(file, mode, first, last);
close(file);