void help(void)
{
fprintf(stderr, "Syntax: i2cset [-y] I2CBUS CHIP-ADDRESS DATA-ADDRESS "
"VALUE [MODE] [MASK]\n"
" i2cset -V\n"
" MODE is 'b[yte]' or 'w[ord]' (default b)\n"
" Append 'p' to MODE for PEC checking\n"
" I2CBUS is an integer\n");
print_i2c_busses(0);
exit(1);
}
static void help(void)
{
fprintf(stderr, "Syntax: i2cget [-f] [-y] I2CBUS CHIP-ADDRESS "
"[DATA-ADDRESS [MODE]]\n"
" i2cget -V\n"
" MODE can be: 'b' (read byte data, default)\n"
" 'w' (read word data)\n"
" 'c' (write byte/read byte)\n"
" If DATA-ADDRESS is omitted, a single read byte command is "
"issued\n"
" Append 'p' to MODE for PEC checking\n"
" I2CBUS is an integer\n");
print_i2c_busses(0);
exit(1);
}
void help(void)
{
fprintf(stderr,
"Syntax: i2cdetect [-y] [-a] [-q|-r] I2CBUS [FIRST LAST]\n"
" i2cdetect -l\n"
" i2cdetect -V\n"
" I2CBUS is an integer\n"
" With -a, probe 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"
" With -l, lists installed busses only\n");
print_i2c_busses(0);
}
static void help(void)
{
fprintf(stderr, "Syntax: i2cdump [-f] [-y] I2CBUS ADDRESS [MODE] "
"[BANK [BANKREG]]\n"
" i2cdump -V\n"
" MODE is one of:\n"
" b (byte, default)\n"
" w (word)\n"
" W (word on even register addresses)\n"
" s (SMBus block)\n"
" i (I2C block)\n"
" c (consecutive byte)\n"
" Append 'p' to 'b', 'w', 's' or 'c' for PEC checking\n"
" I2CBUS is an integer\n"
" ADDRESS is an integer 0x00 - 0x7f\n"
" BANK and BANKREG are for byte and word accesses (default "
"bank 0, reg 0x4e)\n"
" BANK is the command for smbusblock accesses (default 0)\n");
print_i2c_busses(0);
}
int main(int argc, char *argv[])
{
char *end;
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;
/* 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;
break;
case 'q':
if (mode == MODE_READ) {
fprintf(stderr, "Error: Different modes "
"specified!\n");
exit(1);
}
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 (argc == flags + 4) {
int tmp;
tmp = strtol(argv[flags+2], &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[flags+3], &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 (argc != flags + 2) {
help();
exit(1);
}
file = open_i2c_dev(i2cbus, filename, 0);
if (file < 0) {
exit(1);
}
if (ioctl(file, I2C_FUNCS, &funcs) < 0) {
fprintf(stderr, "Error: Could not get the adapter "
"functionality matrix: %s\n", strerror(errno));
close(file);
exit(1);
}
if (mode != MODE_READ && !(funcs & I2C_FUNC_SMBUS_QUICK)) {
fprintf(stderr, "Error: Can't use SMBus Quick Write command "
"on this bus (ISA bus?)\n");
close(file);
exit(1);
}
if (mode != MODE_QUICK && !(funcs & I2C_FUNC_SMBUS_READ_BYTE)) {
fprintf(stderr, "Error: Can't use SMBus Read Byte command "
"on this bus (ISA bus?)\n");
close(file);
exit(1);
}
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);
close(file);
exit(res?1:0);
}
