projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 4cc2b88e UH |
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 | Data | |
| 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 | (<time> and <file> vary) | |
| 36 |