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| /*
| * sht30.h
| *
| * Created on: Aug 9, 2021
| * Author: Think
| */
|
| #ifndef INC_SHT30_H_
| #define INC_SHT30_H_
|
| #include "stm32l4xx_hal.h"
|
| /* chip 7-bits hardware address */
| #define SHT30_ADDR 0x44 /* ADDR connected to GND */
|
| /* I2C protocol communication address */
| #define SHT30_ADDR_WR (SHT30_ADDR<<1) /* address bit[0]=0 is write */
| #define SHT30_ADDR_RD ((SHT30_ADDR<<1) | 0x01) /* address bit[0]=1 is read */
|
| #define SHT30_DATA_SIZE 6 /* 2B temperature + 1B CRC, 2B humidity + 1B CRC */
|
| typedef enum
| {
| /* Soft reset command */
| SOFT_RESET_CMD = 0x30A2,
|
| /* Measurement Commands for Single Shot Data Acquisition Mode:
| * Repeatability (low,medium and high) and clock stretching (enabled ordisabled)
| */
| HIGH_ENABLED_CMD = 0x2C06,
| MEDIUM_ENABLED_CMD = 0x2C0D,
| LOW_ENABLED_CMD = 0x2C10,
| HIGH_DISABLED_CMD = 0x2400,
| MEDIUM_DISABLED_CMD = 0x240B,
| LOW_DISABLED_CMD = 0x2416,
|
| /* Measurement Commands for Periodic Data Acquisition Mode
| * Data acquisition frequency: 0.5, 1, 2, 4 & 10 measurements per second, mps
| */
| HIGH_0_5_CMD = 0x2032,
| MEDIUM_0_5_CMD = 0x2024,
| LOW_0_5_CMD = 0x202F,
| HIGH_1_CMD = 0x2130,
| MEDIUM_1_CMD = 0x2126,
| LOW_1_CMD = 0x212D,
| HIGH_2_CMD = 0x2236,
| MEDIUM_2_CMD = 0x2220,
| LOW_2_CMD = 0x222B,
| HIGH_4_CMD = 0x2334,
| MEDIUM_4_CMD = 0x2322,
| LOW_4_CMD = 0x2329,
| HIGH_10_CMD = 0x2737,
| MEDIUM_10_CMD = 0x2721,
| LOW_10_CMD = 0x272A,
|
| /* Readout of Measurement Results for Periodic Mode */
| READOUT_FOR_PERIODIC_MODE = 0xE000,
| } SHT30_CMD;
|
|
| extern int SHT30_SampleData(float *temperature, float *humidity);
|
|
| #endif /* INC_SHT30_H_ */
|
|
