温湿度传感器SHT30-31-35资料包括软件参考代码+技术文档资料.rar

# Adafruit sht31-d for Raspberry PI # ## Referance material ## - [i2c kernel documentation](https://www.kernel.org/doc/Documentation/i2c/dev-interface) - [Official SHT31 c++ library for Arduino](https://github.com/adafruit/Adafruit_SHT31) - [SHT31 manufacturer data sheet](https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/Humidity_and_Temperature_Sensors/Sensirion_Humidity_and_Temperature_Sensors_SHT3x_Datasheet_digital.pdf) ### Enable i2c on the PI in the usual way ### - Run raspi-confid -> select enable i2c -- or -- - This is for raspbian jessie, wheezy is different. - edit /etc/modules and add - - i2c-bcm2708 - - ic2-dev - edit /boot/config and add - - dtparam=i2c_arm=on - - dtparam=i2c1_baudrate=100000 <- This is default, remove 1 zero for this sht31 implimentation to work. ## Prerequisites ## This sh131 implimentation depends on i2c dev lib - sudo apt-get install libi2c-dev Below is also a good one to have while debugging, but be careful i2cdump from the below cause the sht31 interface to become unstable for me and requires a hard-reset to recover correctly. - sudo apt-get install i2c-tools on PI make sure below 2 commands are in /boot/config.txt - dtparam=i2c_arm=on - dtparam=i2c1_baudrate=10000 I know we are slowing down the baurate from optimal, but it seems to be the most stable setting in my testing. add another 0 to the above baudrate for max setting, ie dtparam=i2c1_baudrate=100000