library for AMS ENS210 temperature and humidity sensor
Dependents: rIoTwear-temp-humid
AMS_ENS210.h@6:475b764b720d, 2017-01-24 (annotated)
- Committer:
- UHSLMarcus
- Date:
- Tue Jan 24 10:46:20 2017 +0000
- Revision:
- 6:475b764b720d
- Parent:
- 5:22b8ef3a65e1
- Child:
- 8:1a7d241afbcb
Added get method for i2c interface
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
UHSLMarcus | 0:7088b1bdc2e5 | 1 | /** |
UHSLMarcus | 0:7088b1bdc2e5 | 2 | * @author Marcus Lee |
UHSLMarcus | 0:7088b1bdc2e5 | 3 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 4 | * @section DESCRIPTION |
UHSLMarcus | 0:7088b1bdc2e5 | 5 | * A library for the AMS ENS210 tempuratire and relative humidy sensor. |
UHSLMarcus | 0:7088b1bdc2e5 | 6 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 7 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 8 | |
UHSLMarcus | 0:7088b1bdc2e5 | 9 | |
UHSLMarcus | 0:7088b1bdc2e5 | 10 | #ifndef AMS_ENS210_H |
UHSLMarcus | 0:7088b1bdc2e5 | 11 | #define AMS_ENS210_H |
UHSLMarcus | 0:7088b1bdc2e5 | 12 | |
UHSLMarcus | 0:7088b1bdc2e5 | 13 | #include "mbed.h" |
UHSLMarcus | 0:7088b1bdc2e5 | 14 | |
UHSLMarcus | 0:7088b1bdc2e5 | 15 | |
UHSLMarcus | 0:7088b1bdc2e5 | 16 | /* Library defaults */ |
UHSLMarcus | 5:22b8ef3a65e1 | 17 | #define CONFIG_TEMP_OP_MODE 0 // single shot |
UHSLMarcus | 5:22b8ef3a65e1 | 18 | #define CONFIG_HUMID_OP_MODE 0 // single shot |
UHSLMarcus | 5:22b8ef3a65e1 | 19 | #define CONFIG_POWER_MODE 1 // low power |
UHSLMarcus | 0:7088b1bdc2e5 | 20 | |
UHSLMarcus | 0:7088b1bdc2e5 | 21 | /* Library Constants */ |
UHSLMarcus | 5:22b8ef3a65e1 | 22 | #define ENS210_SLAVE_ADDR_RAW 0x43 |
UHSLMarcus | 5:22b8ef3a65e1 | 23 | #define ENS210_SLAVE_ADDR ENS210_SLAVE_ADDR_RAW << 1 // 0x86 |
UHSLMarcus | 5:22b8ef3a65e1 | 24 | #define ENS210_SLAVE_ADDR_W ENS210_SLAVE_ADDR |
UHSLMarcus | 5:22b8ef3a65e1 | 25 | #define ENS210_SLAVE_ADDR_R ENS210_SLAVE_ADDR | 1 // 0x87 |
UHSLMarcus | 0:7088b1bdc2e5 | 26 | |
UHSLMarcus | 5:22b8ef3a65e1 | 27 | #define SYS_CONFIG 0x10 |
UHSLMarcus | 5:22b8ef3a65e1 | 28 | #define SYS_STATUS 0x11 |
UHSLMarcus | 0:7088b1bdc2e5 | 29 | |
UHSLMarcus | 5:22b8ef3a65e1 | 30 | #define SENS_OP_MODE 0x21 |
UHSLMarcus | 5:22b8ef3a65e1 | 31 | #define SENS_START 0x22 |
UHSLMarcus | 5:22b8ef3a65e1 | 32 | #define SENS_STOP 0x23 |
UHSLMarcus | 5:22b8ef3a65e1 | 33 | #define SENS_STATUS 0x24 |
UHSLMarcus | 5:22b8ef3a65e1 | 34 | #define SENS_TEMP 0x30 |
UHSLMarcus | 5:22b8ef3a65e1 | 35 | #define SENS_HUMID 0x33 |
UHSLMarcus | 0:7088b1bdc2e5 | 36 | |
UHSLMarcus | 0:7088b1bdc2e5 | 37 | /** The AMS ENS210 class |
UHSLMarcus | 0:7088b1bdc2e5 | 38 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 39 | class AMS_ENS210 { |
UHSLMarcus | 0:7088b1bdc2e5 | 40 | |
UHSLMarcus | 0:7088b1bdc2e5 | 41 | public: |
UHSLMarcus | 0:7088b1bdc2e5 | 42 | /** Create an AMS_ENS210 instance |
UHSLMarcus | 0:7088b1bdc2e5 | 43 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 44 | * @param i2c The I2C interface to use for communication |
UHSLMarcus | 0:7088b1bdc2e5 | 45 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 46 | AMS_ENS210(I2C * i2c); |
UHSLMarcus | 0:7088b1bdc2e5 | 47 | |
UHSLMarcus | 0:7088b1bdc2e5 | 48 | /** Create an AMS_ENS210 instance |
UHSLMarcus | 0:7088b1bdc2e5 | 49 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 50 | * @param i2c The I2C interface to use for communication |
UHSLMarcus | 3:3b427231e5a7 | 51 | * @param temp_continuous Set tempurature operation mode, true for continuous and false for single shot |
UHSLMarcus | 3:3b427231e5a7 | 52 | * @param humid_continuous Set humidity operation mode, true for continuous and false for single shot |
UHSLMarcus | 0:7088b1bdc2e5 | 53 | */ |
UHSLMarcus | 3:3b427231e5a7 | 54 | AMS_ENS210(I2C * i2c, bool temp_continuous, bool humid_continuous); |
UHSLMarcus | 0:7088b1bdc2e5 | 55 | |
UHSLMarcus | 0:7088b1bdc2e5 | 56 | /** Create an AMS_ENS210 instance |
UHSLMarcus | 0:7088b1bdc2e5 | 57 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 58 | * @param i2c The I2C interface to use for communication |
UHSLMarcus | 3:3b427231e5a7 | 59 | * @param temp_continuous Set tempurature operation mode, true for continuous and false for single shot |
UHSLMarcus | 3:3b427231e5a7 | 60 | * @param humid_continuous Set humidity operation mode, true for continuous and false for single shot |
UHSLMarcus | 0:7088b1bdc2e5 | 61 | * @param low_power Set power mode, true for low power/standby and false for active |
UHSLMarcus | 0:7088b1bdc2e5 | 62 | */ |
UHSLMarcus | 3:3b427231e5a7 | 63 | AMS_ENS210(I2C * i2c, bool temp_continuous, bool humid_continuous, bool low_power); |
UHSLMarcus | 0:7088b1bdc2e5 | 64 | |
UHSLMarcus | 0:7088b1bdc2e5 | 65 | /** Destroy the AMS_ENS210 instance |
UHSLMarcus | 0:7088b1bdc2e5 | 66 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 67 | ~AMS_ENS210(); |
UHSLMarcus | 0:7088b1bdc2e5 | 68 | |
UHSLMarcus | 0:7088b1bdc2e5 | 69 | /** Initalise the sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 70 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 71 | * @return Intalisation success |
UHSLMarcus | 0:7088b1bdc2e5 | 72 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 73 | bool init(); |
UHSLMarcus | 0:7088b1bdc2e5 | 74 | |
UHSLMarcus | 0:7088b1bdc2e5 | 75 | /** Software reset the sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 76 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 77 | * @return Reset success |
UHSLMarcus | 0:7088b1bdc2e5 | 78 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 79 | bool reset(); |
UHSLMarcus | 0:7088b1bdc2e5 | 80 | |
UHSLMarcus | 0:7088b1bdc2e5 | 81 | /** Set the power mode |
UHSLMarcus | 0:7088b1bdc2e5 | 82 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 83 | * @param low_power True for low power/standby and false for active |
UHSLMarcus | 0:7088b1bdc2e5 | 84 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 85 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 86 | */ |
UHSLMarcus | 3:3b427231e5a7 | 87 | bool low_power_mode(bool low_power); |
UHSLMarcus | 0:7088b1bdc2e5 | 88 | |
UHSLMarcus | 0:7088b1bdc2e5 | 89 | /** Get the current power mode |
UHSLMarcus | 0:7088b1bdc2e5 | 90 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 91 | * @return The power mode, true for low power, false for active |
UHSLMarcus | 0:7088b1bdc2e5 | 92 | */ |
UHSLMarcus | 3:3b427231e5a7 | 93 | bool low_power_mode(); |
UHSLMarcus | 3:3b427231e5a7 | 94 | |
UHSLMarcus | 3:3b427231e5a7 | 95 | /** Get whether the sensor is in the active state or not |
UHSLMarcus | 3:3b427231e5a7 | 96 | * |
UHSLMarcus | 3:3b427231e5a7 | 97 | * @return The active state, true for active, false for inactive |
UHSLMarcus | 3:3b427231e5a7 | 98 | */ |
UHSLMarcus | 3:3b427231e5a7 | 99 | bool is_active(); |
UHSLMarcus | 0:7088b1bdc2e5 | 100 | |
UHSLMarcus | 0:7088b1bdc2e5 | 101 | /** Set the tempurature operation mode |
UHSLMarcus | 0:7088b1bdc2e5 | 102 | * |
UHSLMarcus | 3:3b427231e5a7 | 103 | * @param single_shot True for continuous and false for single shot |
UHSLMarcus | 0:7088b1bdc2e5 | 104 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 105 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 106 | */ |
UHSLMarcus | 3:3b427231e5a7 | 107 | bool temp_continuous_mode(bool continuous); |
UHSLMarcus | 0:7088b1bdc2e5 | 108 | |
UHSLMarcus | 0:7088b1bdc2e5 | 109 | /** Get the current tempurature operation mode |
UHSLMarcus | 0:7088b1bdc2e5 | 110 | * |
UHSLMarcus | 3:3b427231e5a7 | 111 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 112 | */ |
UHSLMarcus | 3:3b427231e5a7 | 113 | bool temp_continuous_mode(); |
UHSLMarcus | 0:7088b1bdc2e5 | 114 | |
UHSLMarcus | 0:7088b1bdc2e5 | 115 | /** Set the humidity operation mode |
UHSLMarcus | 0:7088b1bdc2e5 | 116 | * |
UHSLMarcus | 3:3b427231e5a7 | 117 | * @param single_shot True for continuous and false for single shot |
UHSLMarcus | 0:7088b1bdc2e5 | 118 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 119 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 120 | */ |
UHSLMarcus | 3:3b427231e5a7 | 121 | bool humid_continuous_mode(bool continuous); |
UHSLMarcus | 0:7088b1bdc2e5 | 122 | |
UHSLMarcus | 0:7088b1bdc2e5 | 123 | /** Get the current humidity operation mode |
UHSLMarcus | 0:7088b1bdc2e5 | 124 | * |
UHSLMarcus | 3:3b427231e5a7 | 125 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 126 | */ |
UHSLMarcus | 3:3b427231e5a7 | 127 | bool humid_continuous_mode(); |
UHSLMarcus | 0:7088b1bdc2e5 | 128 | |
UHSLMarcus | 0:7088b1bdc2e5 | 129 | /** Set the I2C interface |
UHSLMarcus | 0:7088b1bdc2e5 | 130 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 131 | * @param i2c The I2C interface |
UHSLMarcus | 0:7088b1bdc2e5 | 132 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 133 | void i2c_interface(I2C * i2c); |
UHSLMarcus | 0:7088b1bdc2e5 | 134 | |
UHSLMarcus | 6:475b764b720d | 135 | /** Get the I2C interface |
UHSLMarcus | 6:475b764b720d | 136 | * |
UHSLMarcus | 6:475b764b720d | 137 | * @return The I2C interface |
UHSLMarcus | 6:475b764b720d | 138 | */ |
UHSLMarcus | 6:475b764b720d | 139 | I2C* i2c_interface(); |
UHSLMarcus | 6:475b764b720d | 140 | |
UHSLMarcus | 0:7088b1bdc2e5 | 141 | /** Start measurement collection |
UHSLMarcus | 0:7088b1bdc2e5 | 142 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 143 | * @param temp Start the tempurature sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 144 | * @param humid Start the humidity sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 145 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 146 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 147 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 148 | bool start(bool temp = true, bool humid = true); |
UHSLMarcus | 0:7088b1bdc2e5 | 149 | |
UHSLMarcus | 0:7088b1bdc2e5 | 150 | /** Stop measurement collection |
UHSLMarcus | 0:7088b1bdc2e5 | 151 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 152 | * @param temp Stop the tempurature sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 153 | * @param humid Stop the humidity sensor |
UHSLMarcus | 0:7088b1bdc2e5 | 154 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 155 | * @return Write success |
UHSLMarcus | 0:7088b1bdc2e5 | 156 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 157 | bool stop(bool temp = true, bool humid = true); |
UHSLMarcus | 0:7088b1bdc2e5 | 158 | |
UHSLMarcus | 0:7088b1bdc2e5 | 159 | /** Get whether the sensor is measuring tempurature data |
UHSLMarcus | 0:7088b1bdc2e5 | 160 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 161 | * @return Sensor activity, true for measureing, false for idle |
UHSLMarcus | 0:7088b1bdc2e5 | 162 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 163 | bool temp_is_measuring(); |
UHSLMarcus | 0:7088b1bdc2e5 | 164 | |
UHSLMarcus | 0:7088b1bdc2e5 | 165 | /** Get whether the sensor is measuring humidity data |
UHSLMarcus | 0:7088b1bdc2e5 | 166 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 167 | * @return Sensor activity, true for measureing, false for idle |
UHSLMarcus | 0:7088b1bdc2e5 | 168 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 169 | bool humid_is_measuring(); |
UHSLMarcus | 0:7088b1bdc2e5 | 170 | |
UHSLMarcus | 0:7088b1bdc2e5 | 171 | /** Get whether the sensor has collected tempurature data |
UHSLMarcus | 0:7088b1bdc2e5 | 172 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 173 | * @return Has data |
UHSLMarcus | 0:7088b1bdc2e5 | 174 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 175 | bool temp_has_data(); |
UHSLMarcus | 0:7088b1bdc2e5 | 176 | |
UHSLMarcus | 0:7088b1bdc2e5 | 177 | /** Get whether the sensor has collected humidity data |
UHSLMarcus | 0:7088b1bdc2e5 | 178 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 179 | * @return Has data |
UHSLMarcus | 0:7088b1bdc2e5 | 180 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 181 | bool humid_has_data(); |
UHSLMarcus | 0:7088b1bdc2e5 | 182 | |
UHSLMarcus | 0:7088b1bdc2e5 | 183 | /** Get the most recent tempurature measurement, must call temp_has_data() first when in single shot mode otherwise the same data will be returned |
UHSLMarcus | 0:7088b1bdc2e5 | 184 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 185 | * @return Most recent tempurature measurement as a 16 bits unsigned value in 1/64 Kelvin |
UHSLMarcus | 0:7088b1bdc2e5 | 186 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 187 | uint16_t temp_read(); |
UHSLMarcus | 0:7088b1bdc2e5 | 188 | |
UHSLMarcus | 0:7088b1bdc2e5 | 189 | /** Get the most recent humidty measurement, must call humid_has_data() first when in single shot mode otherwise the same data will be returned |
UHSLMarcus | 0:7088b1bdc2e5 | 190 | * |
UHSLMarcus | 0:7088b1bdc2e5 | 191 | * @return Most recent humidity measurement as a 16 bits unsigned value in 1/64 Kelvin |
UHSLMarcus | 0:7088b1bdc2e5 | 192 | */ |
UHSLMarcus | 0:7088b1bdc2e5 | 193 | uint16_t humid_read(); |
UHSLMarcus | 0:7088b1bdc2e5 | 194 | |
UHSLMarcus | 0:7088b1bdc2e5 | 195 | private: |
UHSLMarcus | 0:7088b1bdc2e5 | 196 | I2C * _i2c; |
UHSLMarcus | 0:7088b1bdc2e5 | 197 | bool _temp_mode; |
UHSLMarcus | 0:7088b1bdc2e5 | 198 | bool _humid_mode; |
UHSLMarcus | 0:7088b1bdc2e5 | 199 | bool _power_mode; |
UHSLMarcus | 3:3b427231e5a7 | 200 | bool _reset; |
UHSLMarcus | 3:3b427231e5a7 | 201 | uint16_t temp_reading; |
UHSLMarcus | 3:3b427231e5a7 | 202 | uint16_t humid_reading; |
UHSLMarcus | 0:7088b1bdc2e5 | 203 | |
UHSLMarcus | 0:7088b1bdc2e5 | 204 | bool write_config(bool system = true, bool sensor = true); |
UHSLMarcus | 0:7088b1bdc2e5 | 205 | const char * read_config(bool system = true, bool sensor = true); |
UHSLMarcus | 0:7088b1bdc2e5 | 206 | int i2c_read(char reg_addr, char* output, int len); |
UHSLMarcus | 3:3b427231e5a7 | 207 | int i2c_write(char reg_addr, char* input, int len); |
UHSLMarcus | 0:7088b1bdc2e5 | 208 | |
UHSLMarcus | 0:7088b1bdc2e5 | 209 | |
UHSLMarcus | 0:7088b1bdc2e5 | 210 | |
UHSLMarcus | 0:7088b1bdc2e5 | 211 | }; |
UHSLMarcus | 0:7088b1bdc2e5 | 212 | |
UHSLMarcus | 0:7088b1bdc2e5 | 213 | #endif /* AMS_ENS210_H */ |