projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 22548bdf UH |
1 | ------------------------------------------------------------------------------- |
| 2 | Sensirion SHT2x | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of dumps of a Sensirion SHT2x temperature/humidity sensor. | |
| 6 | ||
| 7 | For details see: | |
| 8 | https://www.sensirion.com/en/products/humidity-sensors/humidity-temperature-sensor-sht2x-digital-i2c-accurate/ | |
| 9 | https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Sensirion_Humidity_Sensors_SHT21_Datasheet_V4.pdf | |
| 10 | ||
| 11 | ||
| 12 | Logic analyzer setup | |
| 13 | -------------------- | |
| 14 | ||
| 15 | The logic analyzer used was a USBee SX (at 8 MHz): | |
| 16 | ||
| 17 | Probe SHT2x | |
| 18 | ----------------- | |
| 19 | 1 SDA | |
| 20 | 2 SCL | |
| 21 | ||
| 22 | ||
| 082fca80 KP |
23 | sensirion_sht21_humidity35.sr |
| 24 | ----------------------------- | |
| 22548bdf UH |
25 | |
| 26 | The sensor reports a humidity of ca. 35 %RH. | |
| 27 | ||
| 082fca80 KP |
28 | |
| 29 | i2c-sht21-100khz-read-serial-hold.sr | |
| 30 | ------------------------------------ | |
| 31 | ||
| 32 | This file captures reading the version and serial, as well as using | |
| 33 | the "temp hold" and "humidity hold" reading styles. Notice SCL held low | |
| 34 | by the slave. | |
| 35 | ||
| 36 | Temperature is ~23C and RH ~50% and the serial number is "e4d2 0122 d208 0131". |