Joseph Ellsworth
Testing SHT75 humidity sensor on STM F303K8 board.
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Nucleo-F303K8-SSD1306_OLED
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Joseph Ellsworth
Sample code to test SHT75 humidity sensor using STM F303K8 board. Uses a 3.3V from board to power sensor. 10K resistor Pull-up on data. Must not be on same pins as I2C. Uses D0 for Clk and D1 for Data.
I had to modify sample code supplied by https://developer.mbed.org/users/nimbusgb/code/SHT75/ because the sensor failed to read without the softReset() and readStatus() at beginning of measurement loop. I think this is caused by the 72Mhtz speed of the F303K8 but did not attempt to fully diagnose.
The readStatus() method from library seems to malfunction and always return a -1 which never changes even when sensor is unplugged.
See https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/Humidity_Sensors/Sensirion_Humidity_Sensors_SHT7x_Datasheet_V5.pdf section 2.1 for wiring.
Changes
| Revision | Date | Who | Commit message |
|---|---|---|---|
| 5:4b66dfbc52a5 | 2016-07-27 | joeata2wh | updated comments |
| 4:2c46c3bc8032 | 2016-07-27 | joeata2wh | working version |
| 3:47148198f5f2 | 2016-03-30 | joeata2wh | update to use MIT license |
| 2:dc3e84d595c3 | 2016-03-21 | joeata2wh | got it working with the adafruit library |
| 1:90d213185462 | 2016-03-21 | joeata2wh | initial version request comment |
| 0:fa185766e039 | 2016-03-19 | joeata2wh | working version |