mirror of
https://gitee.com/beecue/fastbee.git
synced 2025-12-20 01:45:55 +08:00
17 lines
1004 B
Markdown
17 lines
1004 B
Markdown
# SHT3x
|
|
|
|
- This component will show you how to use I2C module read external i2c sensor data, here we use SHT3x-series temperature and humidity sensor(SHT30 is used this component).
|
|
- Pin assignment:
|
|
- GPIO21 is assigned as the data signal of i2c master port
|
|
- GPIO22 is assigned as the clock signal of i2c master port
|
|
- Connection:
|
|
* connect sda of sensor with GPIO21
|
|
* connect scl of sensor with GPIO22
|
|
- SHT3x measurement mode:
|
|
* single shot data acquisition mode: in this mode one issued measurement command triggers the acquisition of one data pair.
|
|
* periodic data acquisition mode: in this mode one issued measurement command yields a stream of data pairs. when use periodic data acquisition mode, you should send hex code 0xE000 firstly, and send 0x3093 to stop periodic mode.
|
|
|
|
# Notice
|
|
|
|
- SHT3x uses 8-bit CRC checksum, you can see `CheckCrc8() `for detail.
|
|
- The raw measurement data needs to be convert to physical scale. formulas are shown in `sht3x_get_humiture()` |