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Rework command line parsing. Implement -y, kill arbitrary 5 second

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delay. Update man page.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2696 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2004-09-22 20:37:06 +00:00
parent 6f20de0c27
commit 2f42ea6285
2 changed files with 104 additions and 71 deletions
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19
prog/detect/i2cdetect.8
View File

@@ -1,14 +1,18 @@
.TH I2CDETECT 8 "July 2004"
.TH I2CDETECT 8 "September 2004"
.SH NAME
i2cdetect \- detect I2C chips
.SH SYNOPSIS
.B i2cdetect
.RI [ -f ]
.RI [ -y ]
.RI [ -a ]
.RI [ -q | -r ]
.I i2cbus
.br
.B i2cdetect
.I -V
.br
.B i2cdetect
.I -l
.SH DESCRIPTION
@@ -22,7 +26,13 @@ This program can confuse your I2C bus, cause data loss and worse!
.SH OPTIONS
.TP
.B "\-f"
.B "\-y"
Disable interactive mode. By default, i2cdetect will wait for a confirmation
from the user before messing with the I2C bus. When this flag is used, it
will perform the operation directly. This is mainly meant to be used in
scripts.
.TP
.B "\-a"
Force scanning of non-regular addresses. Not recommended.
.TP
.B "\-q"
@@ -37,6 +47,9 @@ used is the one believed to be the safest for each address).
Not recommended. This is known to lock SMBus on various write-only
chips (most notably clock chips at address 0x69).
.TP
.B "\-V"
Display the version and exit.
.TP
.B "\-l"
Output a list of installed busses.

156
prog/detect/i2cdetect.c
View File

@@ -35,15 +35,17 @@
void help(void)
{
fprintf(stderr,
"Syntax: i2cdetect [-f] [-q|-r] I2CBUS [FIRST LAST]\n"
"Syntax: i2cdetect [-y] [-a] [-q|-r] I2CBUS [FIRST LAST]\n"
" i2cdetect -l\n"
" i2cdetect -V\n"
" I2CBUS is an integer\n"
" With -f, scans all addresses (NOT RECOMMENDED)\n"
" With -a, probe all addresses (NOT RECOMMENDED)\n"
" With -q, uses only quick write commands for probing (NOT "
"RECOMMENDED)\n"
"RECOMMENDED)\n"
" With -r, uses only read byte commands for probing (NOT "
"RECOMMENDED)\n"
"RECOMMENDED)\n"
" If provided, FIRST and LAST limit the probing range.\n"
" i2cdetect -l lists installed busses only\n");
" With -l, lists installed busses only\n");
}
int scan_i2c_bus(int file, const int mode, const int first, const int last)
@@ -111,74 +113,82 @@ int scan_i2c_bus(int file, const int mode, const int first, const int last)
int main(int argc, char *argv[])
{
char *end;
int i = 1, i2cbus = -1, file, res;
int i2cbus, file, res;
char filename[20];
long funcs;
int mode = MODE_AUTO;
int first = 0x03, last = 0x77;
int flags = 0;
int yes = 0, version = 0, list = 0;
while(i2cbus == -1) {
if (i >= argc) {
fprintf(stderr, "Error: No i2c-bus specified!\n");
help();
exit(1);
}
if(!strcasecmp(argv[i], "-v")) {
fprintf(stderr, "i2cdetect version %s\n", LM_VERSION);
exit(0);
}
if(!strcmp(argv[i], "-l")) {
print_i2c_busses(1);
exit(0);
}
if(!strcmp(argv[i], "-f")) {
first = 0x00;
last = 0x7F;
i++;
} else
if(!strcmp(argv[i], "-q")) {
if (mode != MODE_AUTO) {
fprintf(stderr, "Error: Different modes "
"specified!\n");
exit(1);
}
mode = MODE_QUICK;
i++;
} else
if(!strcmp(argv[i], "-r")) {
if (mode != MODE_AUTO) {
/* handle (optional) flags first */
while (1+flags < argc && argv[1+flags][0] == '-') {
switch (argv[1+flags][1]) {
case 'V': version = 1; break;
case 'y': yes = 1; break;
case 'l': list = 1; break;
case 'r':
if (mode == MODE_QUICK) {
fprintf(stderr, "Error: Different modes "
"specified!\n");
exit(1);
}
mode = MODE_READ;
i++;
} else {
i2cbus = strtol(argv[i],&end,0);
if (*end) {
fprintf(stderr, "Error: I2CBUS argument not a "
"number!\n");
help();
break;
case 'q':
if (mode == MODE_READ) {
fprintf(stderr, "Error: Different modes "
"specified!\n");
exit(1);
}
if ((i2cbus < 0) || (i2cbus > 0xff)) {
fprintf(stderr, "Error: I2CBUS argument out "
"of range (0-255)!\n");
help();
exit(1);
}
i++;
mode = MODE_QUICK;
break;
case 'a':
first = 0x00;
last = 0x7F;
break;
default:
fprintf(stderr, "Warning: Unsupported flag "
"\"-%c\"!\n", argv[1+flags][1]);
help();
exit(1);
}
flags++;
}
if (version) {
fprintf(stderr, "i2cdetect version %s\n", LM_VERSION);
exit(0);
}
if (list) {
print_i2c_busses(1);
exit(0);
}
if (argc < flags + 2) {
fprintf(stderr, "Error: No i2c-bus specified!\n");
help();
exit(1);
}
i2cbus = strtol(argv[flags+1], &end, 0);
if (*end) {
fprintf(stderr, "Error: I2CBUS argument not a number!\n");
help();
exit(1);
}
if ((i2cbus < 0) || (i2cbus > 0xff)) {
fprintf(stderr, "Error: I2CBUS argument out of range "
"(0-255)!\n");
help();
exit(1);
}
/* read address range if present */
if (i+2 == argc) {
if (argc == flags + 4) {
int tmp;
tmp = strtol(argv[i], &end, 0);
tmp = strtol(argv[flags+2], &end, 0);
if (*end) {
fprintf(stderr, "Error: FIRST argment not a "
"number!\n");
@@ -193,7 +203,7 @@ int main(int argc, char *argv[])
}
first = tmp;
tmp = strtol(argv[i+1], &end, 0);
tmp = strtol(argv[flags+3], &end, 0);
if (*end) {
fprintf(stderr, "Error: LAST argment not a "
"number!\n");
@@ -207,7 +217,7 @@ int main(int argc, char *argv[])
exit(1);
}
last = tmp;
} else if (i != argc) {
} else if (argc != flags + 2) {
help();
exit(1);
}
@@ -217,7 +227,7 @@ int main(int argc, char *argv[])
exit(1);
}
if (ioctl(file,I2C_FUNCS,&funcs) < 0) {
if (ioctl(file, I2C_FUNCS, &funcs) < 0) {
fprintf(stderr, "Error: Could not get the adapter "
"functionality matrix: %s\n", strerror(errno));
close(file);
@@ -236,16 +246,26 @@ int main(int argc, char *argv[])
exit(1);
}
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,
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 (!yes) {
char s[2];
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,
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, "Continue? [Y/n] ");
fflush(stderr);
fgets(s, 2, stdin);
if (s[0] != '\n' && s[0] != 'y' && s[0] != 'Y') {
fprintf(stderr, "Aborting on user request.\n");
exit(0);
}
}
res = scan_i2c_bus(file, mode, first, last);