Hi,
I installed an ADT7467 evaluation board on my motherboard. The sensors-detect (lm-sensor 10.3) can detect it in my system (linux kernel 2.6.21).
***********************************************************
Driver 'to-be-written' (should be inserted)
Detects correctly
* Bus ''SMBUS PIIX4 adapter at 0500"
Busdriver 'i2c-piix4', I2C address 0x2e
Chip 'Analog Device ADT7467 or ADT7468' (Confidence:7)
*************************************************************
However when I run the sensors-detect again, it can't detect the ADT7467 any more. Only after I reboot the system and run sensors-detect, it can detect it again.
Any comment here?
In addition, I wrote a simple program to read the company info from the ADT7467 chip.
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file = open_i2c_dev(i2cbus, filename, 0); /* i2cbus=0. Only one i2c device*/
if (file < 0) {
exit(1);
}
/* check adapter functionality */
if (ioctl(file, I2C_FUNCS, &funcs) < 0) {
fprintf(stderr, "Error: Could not get the adapter "
"functionality matrix: %s\n", strerror(errno));
exit(1);
}
/* specify with what device address you want to communicate */
if (ioctl(file,I2C_SLAVE,address) < 0) { /*address is 0x2e*/
if(errno == EBUSY)
fprintf(stderr, "Device busy?... Try later\n");
else
fprintf(stderr, "Error: Could not set address to %d: %s\n",
address, strerror(errno));
exit(1);
}
company = i2c_smbus_read_byte_data(file, ADT7467_REG_COMPANY);
verstep = i2c_smbus_read_byte_data(file, ADT7467_REG_VERSTEP);
if( company == ADT7467_COMPANY_ANALOG_DEV
&& (verstep == ADT7467_VERSTEP_2 || verstep ==
ADT7467_VERSTEP_1))
printf("Okey. It looks like a ADT7467\n");
*************************************************************
The result is like
i2c_adapter i2c-0: Failed! (01)
i2c_adapter i2c-0: Failed! (01)
i2c_smbus_read_byte_data returns -1. It seems i2c transaction failed.
Any comments here?
Thank you.
-Dong
---------------------------------
????????3.5G???20M???
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