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Wait for user input to continue (as opposed to 5 sec delay).

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Can be skipped using -y.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2680 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare 2004-08-30 19:31:46 +00:00
parent 7c969daeb5
commit 657ffe4e9c
2 changed files with 84 additions and 43 deletions
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16
prog/dump/i2cdump.8
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@ -1,19 +1,33 @@
.TH I2CDUMP 8 "July 2004" .TH I2CDUMP 8 "August 2004"
.SH NAME .SH NAME
i2cdump \- examine I2C registers i2cdump \- examine I2C registers
.SH SYNOPSIS .SH SYNOPSIS
.B i2cdump .B i2cdump
.RB [ -y ]
.I i2cbus .I i2cbus
.I address .I address
.RI [ mode ] .RI [ mode ]
.RI [ "bank " [ bankreg ]] .RI [ "bank " [ bankreg ]]
.br
.B i2cdump
.B -V
.SH DESCRIPTION .SH DESCRIPTION
i2cdump is a small helper program to examine registers i2cdump is a small helper program to examine registers
visible through the I2C bus. visible through the I2C bus.
.SH OPTIONS .SH OPTIONS
.TP
.B -V
Display the version and exit.
.TP
.B -y
Disable interactive mode. By default, i2cdump 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.
.PP
At least two options must be provided to i2cdump. \fIi2cbus\fR indicates the At least two options must be provided to i2cdump. \fIi2cbus\fR indicates the
number of the I2C bus to be scanned. This number should correspond to one number of the I2C bus to be scanned. This number should correspond to one
of the busses listed by \fIi2cdetect -l\fR. \fIaddress\fR indicates the of the busses listed by \fIi2cdetect -l\fR. \fIaddress\fR indicates the

111
prog/dump/i2cdump.c
View File

@ -45,8 +45,9 @@
void help(void) void help(void)
{ {
fprintf(stderr, "Syntax: i2cdump I2CBUS ADDRESS [MODE] [BANK " fprintf(stderr, "Syntax: i2cdump [-y] I2CBUS ADDRESS [MODE] [BANK "
"[BANKREG]]\n" "[BANKREG]]\n"
" i2cdump -V\n"
" MODE is 'b[yte]', 'w[ord]', 's[mbusblock], 'i[2cblock]',\n" " MODE is 'b[yte]', 'w[ord]', 's[mbusblock], 'i[2cblock]',\n"
" or 'c[onsecutive byte address mode]' (default b)\n" " or 'c[onsecutive byte address mode]' (default b)\n"
" Append MODE with 'p' for PEC checking\n" " Append MODE with 'p' for PEC checking\n"
@ -68,19 +69,34 @@ int main(int argc, char *argv[])
unsigned char cblock[256]; unsigned char cblock[256];
int block[256]; int block[256];
int pec = 0; int pec = 0;
int flags = 0;
int yes = 0, version = 0;
if (argc < 2) { /* handle (optional) flags first */
fprintf(stderr, "Error: No i2c-bus specified!\n"); while (1+flags < argc && argv[1+flags][0] == '-') {
help(); switch (argv[1+flags][1]) {
exit(1); case 'V': version = 1; break;
case 'y': yes = 1; break;
default:
fprintf(stderr, "Warning: Unsupported flag "
"\"-%c\"!\n", argv[1+flags][1]);
help();
exit(1);
}
flags++;
} }
if(!strcmp(argv[1], "-v") || !strcmp(argv[1], "-V")) { if (version) {
fprintf(stderr, "i2cdump version %s\n", LM_VERSION); fprintf(stderr, "i2cdump version %s\n", LM_VERSION);
exit(1); exit(1);
} }
i2cbus = strtol(argv[1], &end, 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) { if (*end) {
fprintf(stderr, "Error: First argument not a number!\n"); fprintf(stderr, "Error: First argument not a number!\n");
help(); help();
@ -92,12 +108,12 @@ int main(int argc, char *argv[])
exit(1); exit(1);
} }
if (argc < 3) { if (argc < flags + 3) {
fprintf(stderr, "Error: No address specified!\n"); fprintf(stderr, "Error: No address specified!\n");
help(); help();
exit(1); exit(1);
} }
address = strtol(argv[2], &end, 0); address = strtol(argv[flags+2], &end, 0);
if (*end) { if (*end) {
fprintf(stderr, "Error: Second argument not a number!\n"); fprintf(stderr, "Error: Second argument not a number!\n");
help(); help();
@ -109,22 +125,22 @@ int main(int argc, char *argv[])
exit(1); exit(1);
} }
if (argc < 4) { if (argc < flags + 4) {
fprintf(stderr, "No size specified (using byte-data access)\n"); fprintf(stderr, "No size specified (using byte-data access)\n");
size = I2C_SMBUS_BYTE_DATA; size = I2C_SMBUS_BYTE_DATA;
} else if (!strncmp(argv[3], "b", 1)) { } else if (!strncmp(argv[flags+3], "b", 1)) {
size = I2C_SMBUS_BYTE_DATA; size = I2C_SMBUS_BYTE_DATA;
pec = argv[3][1] == 'p'; pec = argv[flags+3][1] == 'p';
} else if (!strncmp(argv[3], "w", 1)) { } else if (!strncmp(argv[flags+3], "w", 1)) {
size = I2C_SMBUS_WORD_DATA; size = I2C_SMBUS_WORD_DATA;
pec = argv[3][1] == 'p'; pec = argv[flags+3][1] == 'p';
} else if (!strncmp(argv[3], "s", 1)) { } else if (!strncmp(argv[flags+3], "s", 1)) {
size = I2C_SMBUS_BLOCK_DATA; size = I2C_SMBUS_BLOCK_DATA;
pec = argv[3][1] == 'p'; pec = argv[flags+3][1] == 'p';
} else if (!strncmp(argv[3], "c", 1)) { } else if (!strncmp(argv[flags+3], "c", 1)) {
size = I2C_SMBUS_BYTE; size = I2C_SMBUS_BYTE;
pec = argv[3][1] == 'p'; pec = argv[flags+3][1] == 'p';
} else if (!strcmp(argv[3], "i")) } else if (!strcmp(argv[flags+3], "i"))
size = I2C_SMBUS_I2C_BLOCK_DATA; size = I2C_SMBUS_I2C_BLOCK_DATA;
else { else {
fprintf(stderr, "Error: Invalid mode!\n"); fprintf(stderr, "Error: Invalid mode!\n");
@ -132,8 +148,8 @@ int main(int argc, char *argv[])
exit(1); exit(1);
} }
if (argc > 4) { if (argc > flags + 4) {
bank = strtol(argv[4], &end, 0); bank = strtol(argv[flags+4], &end, 0);
if (*end || size == I2C_SMBUS_I2C_BLOCK_DATA) { if (*end || size == I2C_SMBUS_I2C_BLOCK_DATA) {
fprintf(stderr, "Error: Invalid bank number!\n"); fprintf(stderr, "Error: Invalid bank number!\n");
help(); help();
@ -152,8 +168,8 @@ int main(int argc, char *argv[])
exit(1); exit(1);
} }
if (argc > 5) { if (argc > flags + 5) {
bankreg = strtol(argv[5], &end, 0); bankreg = strtol(argv[flags+5], &end, 0);
if (*end || size == I2C_SMBUS_BLOCK_DATA) { if (*end || size == I2C_SMBUS_BLOCK_DATA) {
fprintf(stderr, "Error: Invalid bank register " fprintf(stderr, "Error: Invalid bank register "
"number!\n"); "number!\n");
@ -297,26 +313,37 @@ int main(int argc, char *argv[])
#endif #endif
} }
fprintf(stderr, "WARNING! This program can confuse your I2C bus, " if (!yes) {
"cause data loss and worse!\n"); char s[2];
fprintf(stderr, "I will probe file %s, address 0x%x, mode %s\n",
filename, address, fprintf(stderr, "WARNING! This program can confuse your I2C "
size == I2C_SMBUS_BLOCK_DATA ? "smbus block" : "bus, cause data loss and worse!\n");
size == I2C_SMBUS_I2C_BLOCK_DATA ? "i2c block" :
size == I2C_SMBUS_BYTE ? "byte consecutive read" : fprintf(stderr, "I will probe file %s, address 0x%x, mode "
size == I2C_SMBUS_BYTE_DATA ? "byte" : "word"); "%s\n", filename, address,
if (pec) size == I2C_SMBUS_BLOCK_DATA ? "smbus block" :
fprintf(stderr, "PEC checking enabled.\n"); size == I2C_SMBUS_I2C_BLOCK_DATA ? "i2c block" :
if (bank) { size == I2C_SMBUS_BYTE ? "byte consecutive read" :
if (size == I2C_SMBUS_BLOCK_DATA) size == I2C_SMBUS_BYTE_DATA ? "byte" : "word");
fprintf(stderr, "Using command 0x%02x.\n", bank); if (pec)
else fprintf(stderr, "PEC checking enabled.\n");
fprintf(stderr, "Probing bank %d using bank register " if (bank) {
"0x%02x.\n", bank, bankreg); if (size == I2C_SMBUS_BLOCK_DATA)
fprintf(stderr, "Using command 0x%02x.\n",
bank);
else
fprintf(stderr, "Probing bank %d using bank "
"register 0x%02x.\n", bank, bankreg);
}
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);
}
} }
fprintf(stderr, "You have five seconds to reconsider and press "
"CTRL-C!\n\n");
sleep(5);
/* See Winbond w83781d data sheet for bank details */ /* See Winbond w83781d data sheet for bank details */
if (bank && size != I2C_SMBUS_BLOCK_DATA) { if (bank && size != I2C_SMBUS_BLOCK_DATA) {