1 -------------------------------------------------------------------------------
2 RDing TEMPer USB-based temperature sensor
3 -------------------------------------------------------------------------------
5 This is a set of example captures of the I2C/USB/other traffic on an
6 RDing TEMPer USB-based temperature sensor.
8 The device consists of a Fairchild FM75 temperature sensor, an unknown
9 I2C EEPROM, and an unknown "main chip" (20 pins) which does USB
10 (low-speed, HID), among other things.
13 http://sigrok.org/wiki/RDing_TEMPer
19 The logic analyzer used was a CWAV USBee SX (at 12MHz):
22 ------------------------
23 0 (black) I2C SDA (FM75)
24 1 (brown) I2C SCL (FM75)
26 3 (orange) USB DM (main chip)
27 4 (yellow) USB DP (main chip)
28 5 (green) LED (a pin on the main chip)
30 The sigrok command line used was:
32 sigrok-cli -d 0:samplerate=12mhz --time <time> \
33 -p 1=SDA,2=SCL,3=OS,4=DM,5=DP,6=LED -o <file>
36 rding_temper_i2c_eeprom_and_sensor.sr
37 -------------------------------------
39 The logic analyzer used was a CWAV USBee SX (at 2MHz):
42 ------------------------
43 0 (black) I2C SDA (FM75)
44 1 (brown) I2C SCL (FM75)
47 The sigrok command line used was:
49 sigrok-cli -d 0:samplerate=2mhz --time <time> -p 1=SDA,2=SCL,3=OS -o <file>