| commit | author | age | ||
| d6b4a7 | 1 | /********************************************************************************* |
| G | 2 | * Copyright: (C) 2023 LingYun IoT System Studio |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Filename: sht20.c | |
| 6 | * Description: This file is temperature and relative humidity sensor SHT20 code | |
| 7 | * | |
| 8 | * Version: 1.0.0(10/08/23) | |
| 9 | * Author: Guo Wenxue <guowenxue@gmail.com> | |
| 10 | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" | |
| 11 | * | |
| 12 | * Pin connection: | |
| 13 | * STH20 Module Raspberry Pi Board | |
| 14 | * VCC <-----> #Pin1(3.3V) | |
| 15 | * SDA <-----> #Pin3(SDA, BCM GPIO2) | |
| 16 | * SCL <-----> #Pin5(SCL, BCM GPIO3) | |
| 17 | * GND <-----> GND | |
| 18 | * | |
| 19 | * /boot/config.txt: | |
| 20 | * dtoverlay=i2c1,pins_2_3 | |
| 21 | * | |
| 22 | ********************************************************************************/ | |
| 23 | ||
| 24 | ||
| 25 | #ifndef _SHT20_H_ | |
| 26 | #define _SHT20_H_ | |
| 27 | ||
| 28 | #define SHT20_I2CDEV "/dev/i2c-1" | |
| 29 | #define SHT20_I2CADDR 0x40 | |
| 30 | ||
| 31 | extern int sht2x_get_temp_humidity(float *temp, float *rh); | |
| 32 | ||
| 33 | #endif /* ----- #ifndef _SHT20_H_ ----- */ | |
| 34 | ||
