1 /* 2 * Copyright (c) 2022 Unionman Technology Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef _I2CINTERFACE_H_ 17 #define _I2CINTERFACE_H_ 18 19 #ifdef _cplusplus 20 extern "C" { 21 #endif 22 23 #undef LOG_DOMAIN 24 #undef LOG_TAG 25 #define LOG_DOMAIN 0 // 标识业务领域，范围0x0~0xFFFFF 26 #define LOG_TAG "i2c_test" 27 28 #define SHT3X_CMD_READ_SERIAL_NUMBER (0x3780) // Read the chip serial number 29 #define SHT3X_CMD_GETDATA_H_CLOCKENBLED (0x2C06) // Measurement:high repeatability 30 #define SHT3X_CMD_GETDATA_M_CLOCKENBLED (0x2C0D) // Measurement: medium repeatability 31 #define SHT3X_CMD_GETDATA_L_CLOCKENBLED (0x2C10) // Measurement: low repeatability 32 33 #define SHT3X_CMD_SETMODE_H_FREQUENCY_HALF_HZ (0x2032) // Measurement: periodic 0.5 mps, high repeatability 34 #define SHT3X_CMD_SETMODE_M_FREQUENCY_HALF_HZ (0x2024) // Measurement: periodic 0.5 mps, medium 35 #define SHT3X_CMD_SETMODE_L_FREQUENCY_HALF_HZ (0x202F) // Measurement: periodic 0.5 mps, low repeatability 36 #define SHT3X_CMD_SETMODE_H_FREQUENCY_1_HZ (0x2130) // Measurement: periodic 1 mps, high repeatability 37 #define SHT3X_CMD_SETMODE_M_FREQUENCY_1_HZ (0x2126) // Measurement: periodic 1 mps, medium repeatability 38 #define SHT3X_CMD_SETMODE_L_FREQUENCY_1_HZ (0x212D) // Measurement: periodic 1 mps, low repeatability 39 #define SHT3X_CMD_SETMODE_H_FREQUENCY_2_HZ (0x2236) // Measurement: periodic 2 mps, high repeatability 40 #define SHT3X_CMD_SETMODE_M_FREQUENCY_2_HZ (0x2220) // Measurement: periodic 2 mps, medium repeatability 41 #define SHT3X_CMD_SETMODE_L_FREQUENCY_2_HZ (0x222B) // Measurement: periodic 2 mps, low repeatability 42 #define SHT3X_CMD_SETMODE_H_FREQUENCY_4_HZ (0x2334) // Measurement: periodic 4 mps, high repeatability 43 #define SHT3X_CMD_SETMODE_M_FREQUENCY_4_HZ (0x2322) // Measurement: periodic 4 mps, medium repeatability 44 #define SHT3X_CMD_SETMODE_L_FREQUENCY_4_HZ (0x2329) // Measurement: periodic 4 mps, low repeatability 45 #define SHT3X_CMD_SETMODE_H_FREQUENCY_10_HZ (0x2737) // Measurement: periodic 10 mps, high repeatability 46 #define SHT3X_CMD_SETMODE_M_FREQUENCY_10_HZ (0x2721) // Measurement: periodic 10 mps, medium 47 #define SHT3X_CMD_SETMODE_L_FREQUENCY_10_HZ (0x272A) // Measurement: periodic 10 mps, low repeatability 48 #define SHT3X_CMD_GETDATA (0xE000) // Readout measurements for periodic mode 49 50 #define SHT3X_CMD_STOP_PERIODIC_ACQUISITION_MODE (0x3093) 51 #define SHT3X_CMD_SOFT_RESET (0x30A2) // Soft reset 52 #define SHT3X_CMD_HEATER_ENABLE (0x306D) // Enabled heater 53 #define SHT3X_CMD_HEATER_DISABLE (0x3066) // Disable heater 54 #define SHT3X_CMD_READ_STATUS_REG (0xF32D) // Read status register 55 #define SHT3X_CMD_CLEAR_STATUS_REG (0x3041) // Clear status register 56 57 #define SHT3X_CMD_READ_HIGH_ALERT_LIMIT_SET (0xE11F) // Read alert limits, high set 58 #define SHT3X_CMD_READ_HIGH_ALERT_LIMIT_CLEAR (0xE114) // Read alert limits, high clear 59 #define SHT3X_CMD_READ_LOW_ALERT_LIMIT_CLEAR (0xE109) // Read alert limits, low clear 60 #define SHT3X_CMD_READ_LOW_ALERT_LIMIT_SET (0xE102) // Read alert limits, low set 61 #define SHT3X_CMD_WRITE_HIGH_ALERT_LIMIT_SET (0x611D) // Write alert limits, high set 62 #define SHT3X_CMD_WRITE_HIGH_ALERT_LIMIT_CLEAR (0x6116) // Write alert limits, high clear 63 #define SHT3X_CMD_WRITE_LOW_ALERT_LIMIT_CLEAR (0x610B) // Write alert limits, low clear 64 #define SHT3X_CMD_WRITE_LOW_ALERT_LIMIT_SET (0x6100) // Write alert limits, low set 65 66 typedef struct { 67 uint8_t writeDataChecksumStatus : 1; 68 uint8_t commandStatus : 1; 69 uint8_t reserved0 : 2; 70 uint8_t systemResetDeteced : 1; 71 uint8_t reserved1 : 5; 72 uint8_t temperatureAlert : 1; 73 uint8_t humidityAlert : 1; 74 uint8_t reserved2 : 1; 75 uint8_t heaterStaus : 1; 76 uint8_t reserved3 : 1; 77 uint8_t alertPendingStatus : 1; 78 } __attribute__((packed)) sStatusReg_t; 79 80 /** 81 Structures used to store temperature and relative humidity 82 */ 83 typedef struct { 84 float TemperatureC; 85 float Humidity; 86 float TemperatureF; 87 } sRHAndTemp_t; 88 89 void ConvertTempAndHum(sRHAndTemp_t *tempRH, uint8_t *rawTemp, uint8_t *rawHum); 90 float ConvertTemperature(uint8_t *rawTemp); 91 float ConvertHumidity(uint8_t *rawHum); 92 uint8_t CheckCrc(uint8_t *data); 93 int SoftReset(char *devName, char addr); 94 int ReadStatusReg(char *devName, char addr, sStatusReg_t *regRaw); 95 int SendCommand(char *devName, char addr, uint16_t modeCommand); 96 int ModeSet(char *devName, char addr, uint8_t mps, uint8_t repeatability); 97 int ReadTempAndHum(char *devName, char addr, sRHAndTemp_t *tempRH); 98 99 int MpsHalfHz(char *devName, char addr, uint8_t repeatability); 100 int Mps1Hz(char *devName, char addr, uint8_t repeatability); 101 int Mps2Hz(char *devName, char addr, uint8_t repeatability); 102 int Mps4Hz(char *devName, char addr, uint8_t repeatability); 103 int Mps10Hz(char *devName, char addr, uint8_t repeatability); 104 105 #ifdef _cplusplus 106 } 107 #endif 108 109 #endif 110