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Commit | Line | Data |
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1 | ------------------------------------------------------------------------------- | |
2 | RDing TEMPer USB-based temperature sensor | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is a set of example captures of the I2C/USB/other traffic on an | |
6 | RDing TEMPer USB-based temperature sensor. | |
7 | ||
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. | |
11 | ||
12 | Details: | |
13 | http://sigrok.org/wiki/RDing_TEMPer | |
14 | ||
15 | ||
16 | Most files | |
17 | ---------- | |
18 | ||
19 | The logic analyzer used was a CWAV USBee SX (at 12MHz): | |
20 | ||
21 | Probe RDing TEMPer | |
22 | ------------------------ | |
23 | 0 (black) I2C SDA (FM75) | |
24 | 1 (brown) I2C SCL (FM75) | |
25 | 2 (red) OS (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) | |
29 | ||
30 | The sigrok command line used was: | |
31 | ||
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> | |
34 | ||
35 | ||
36 | rding_temper_i2c_eeprom_and_sensor.sr | |
37 | ------------------------------------- | |
38 | ||
39 | The logic analyzer used was a CWAV USBee SX (at 2MHz): | |
40 | ||
41 | Probe RDing TEMPer | |
42 | ------------------------ | |
43 | 0 (black) I2C SDA (FM75) | |
44 | 1 (brown) I2C SCL (FM75) | |
45 | 2 (red) OS (FM75) | |
46 | ||
47 | The sigrok command line used was: | |
48 | ||
49 | sigrok-cli -d 0:samplerate=2mhz --time <time> -p 1=SDA,2=SCL,3=OS -o <file> | |
50 |