Thermometer indicating temperature and humidity by LED blink pattern
Dependencies: BLE_API mbed nRF51822
hts221.h@0:8d05f1ced202, 2016-06-17 (annotated)
- Committer:
- HiroyukiIzumi
- Date:
- Fri Jun 17 01:55:11 2016 +0000
- Revision:
- 0:8d05f1ced202
Thermometer indicating temperature and humidity by LED blink pattern
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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HiroyukiIzumi | 0:8d05f1ced202 | 1 | /* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved. |
HiroyukiIzumi | 0:8d05f1ced202 | 2 | * |
HiroyukiIzumi | 0:8d05f1ced202 | 3 | * The information contained herein is property of Nordic Semiconductor ASA. |
HiroyukiIzumi | 0:8d05f1ced202 | 4 | * Terms and conditions of usage are described in detail in NORDIC |
HiroyukiIzumi | 0:8d05f1ced202 | 5 | * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. |
HiroyukiIzumi | 0:8d05f1ced202 | 6 | * |
HiroyukiIzumi | 0:8d05f1ced202 | 7 | * Licensees are granted free, non-transferable use of the information. NO |
HiroyukiIzumi | 0:8d05f1ced202 | 8 | * WARRANTY of ANY KIND is provided. This heading must NOT be removed from |
HiroyukiIzumi | 0:8d05f1ced202 | 9 | * the file. |
HiroyukiIzumi | 0:8d05f1ced202 | 10 | * |
HiroyukiIzumi | 0:8d05f1ced202 | 11 | */ |
HiroyukiIzumi | 0:8d05f1ced202 | 12 | |
HiroyukiIzumi | 0:8d05f1ced202 | 13 | #ifndef HTS221_H |
HiroyukiIzumi | 0:8d05f1ced202 | 14 | #define HTS221_H |
HiroyukiIzumi | 0:8d05f1ced202 | 15 | |
HiroyukiIzumi | 0:8d05f1ced202 | 16 | /*lint ++flb "Enter library region" */ |
HiroyukiIzumi | 0:8d05f1ced202 | 17 | |
HiroyukiIzumi | 0:8d05f1ced202 | 18 | #include <stdbool.h> |
HiroyukiIzumi | 0:8d05f1ced202 | 19 | #include <stdint.h> |
HiroyukiIzumi | 0:8d05f1ced202 | 20 | |
HiroyukiIzumi | 0:8d05f1ced202 | 21 | #define ADDRESS_WHO_AM_I (0x0FU) //!< WHO_AM_I register identifies the device. Expected value is 0xBC. |
HiroyukiIzumi | 0:8d05f1ced202 | 22 | |
HiroyukiIzumi | 0:8d05f1ced202 | 23 | #define HTS221_WriteADDE 0xBE |
HiroyukiIzumi | 0:8d05f1ced202 | 24 | #define HTS221_ReadADDE 0xBF |
HiroyukiIzumi | 0:8d05f1ced202 | 25 | #define HTS221_TempHumi_OUT 0x28 |
HiroyukiIzumi | 0:8d05f1ced202 | 26 | #define HTS221_CALIB 0x30 |
HiroyukiIzumi | 0:8d05f1ced202 | 27 | |
HiroyukiIzumi | 0:8d05f1ced202 | 28 | #define MaxTemp 120 |
HiroyukiIzumi | 0:8d05f1ced202 | 29 | #define MinTemp -40 |
HiroyukiIzumi | 0:8d05f1ced202 | 30 | #define MaxHumi 100 |
HiroyukiIzumi | 0:8d05f1ced202 | 31 | #define MinHumi 0 |
HiroyukiIzumi | 0:8d05f1ced202 | 32 | |
HiroyukiIzumi | 0:8d05f1ced202 | 33 | // Humidity and temperature resolution mode, to ocnfigure sample average |
HiroyukiIzumi | 0:8d05f1ced202 | 34 | #define TRes_1 000 // Number of temperature samples take 2^1, TRes_2 take 2^2, and so forth. |
HiroyukiIzumi | 0:8d05f1ced202 | 35 | #define TRes_2 001 |
HiroyukiIzumi | 0:8d05f1ced202 | 36 | #define TRes_3 010 |
HiroyukiIzumi | 0:8d05f1ced202 | 37 | #define TRes_4 011 |
HiroyukiIzumi | 0:8d05f1ced202 | 38 | #define TRes_5 100 |
HiroyukiIzumi | 0:8d05f1ced202 | 39 | #define TRes_6 101 |
HiroyukiIzumi | 0:8d05f1ced202 | 40 | #define TRes_7 102 |
HiroyukiIzumi | 0:8d05f1ced202 | 41 | #define TRes_8 103 |
HiroyukiIzumi | 0:8d05f1ced202 | 42 | |
HiroyukiIzumi | 0:8d05f1ced202 | 43 | #define HRes_2 000 // Number of humidity samples take 2^2, HRes_3 take 2^3, and so forth. |
HiroyukiIzumi | 0:8d05f1ced202 | 44 | #define HRes_3 001 |
HiroyukiIzumi | 0:8d05f1ced202 | 45 | #define HRes_4 010 |
HiroyukiIzumi | 0:8d05f1ced202 | 46 | #define HRes_5 011 |
HiroyukiIzumi | 0:8d05f1ced202 | 47 | #define HRes_6 100 |
HiroyukiIzumi | 0:8d05f1ced202 | 48 | #define HRes_7 101 |
HiroyukiIzumi | 0:8d05f1ced202 | 49 | #define HRes_8 102 |
HiroyukiIzumi | 0:8d05f1ced202 | 50 | #define HRes_9 103 |
HiroyukiIzumi | 0:8d05f1ced202 | 51 | |
HiroyukiIzumi | 0:8d05f1ced202 | 52 | // Control register 1 |
HiroyukiIzumi | 0:8d05f1ced202 | 53 | #define PD_On 0x80 // Power down mode |
HiroyukiIzumi | 0:8d05f1ced202 | 54 | #define PD_Off 0x00 // Active mode |
HiroyukiIzumi | 0:8d05f1ced202 | 55 | |
HiroyukiIzumi | 0:8d05f1ced202 | 56 | #define BDU_On 0x04 // Block data update, this feature prevents the reading of LSB and MSB related to different samples. |
HiroyukiIzumi | 0:8d05f1ced202 | 57 | #define BDU_Off 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 58 | // Define output data rate |
HiroyukiIzumi | 0:8d05f1ced202 | 59 | #define ODR_OneShot 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 60 | #define ODR_1Hz 0x01 |
HiroyukiIzumi | 0:8d05f1ced202 | 61 | #define ODR_7Hz 0x02 |
HiroyukiIzumi | 0:8d05f1ced202 | 62 | #define ODR_12_5Hz 0x03 |
HiroyukiIzumi | 0:8d05f1ced202 | 63 | // Control register 2 |
HiroyukiIzumi | 0:8d05f1ced202 | 64 | #define Boot 0x80 |
HiroyukiIzumi | 0:8d05f1ced202 | 65 | #define NoBoot 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 66 | #define HeaterOn 0x02 |
HiroyukiIzumi | 0:8d05f1ced202 | 67 | #define HeaterOff 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 68 | #define New_OS 0x01 // One shot, a single acquisition of temperature and humidity is started |
HiroyukiIzumi | 0:8d05f1ced202 | 69 | #define No_OS 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 70 | // Control register 3 |
HiroyukiIzumi | 0:8d05f1ced202 | 71 | #define DRDY_H 0x00 // Data Ready output signal active high(default) |
HiroyukiIzumi | 0:8d05f1ced202 | 72 | #define DRDY_L 0x80 // Data Ready output signal active low |
HiroyukiIzumi | 0:8d05f1ced202 | 73 | #define PP_OD_PP 0x00 // Push-pull on PIN3(DRDY)(default) |
HiroyukiIzumi | 0:8d05f1ced202 | 74 | #define PP_OD_OD 0x40 // Open Drain on PIN3(DRDY) |
HiroyukiIzumi | 0:8d05f1ced202 | 75 | #define DRDY_EN 0x04 // Data Ready enable |
HiroyukiIzumi | 0:8d05f1ced202 | 76 | #define DRDY_NON 0x00 // Data Ready disable(default) |
HiroyukiIzumi | 0:8d05f1ced202 | 77 | |
HiroyukiIzumi | 0:8d05f1ced202 | 78 | // Status register |
HiroyukiIzumi | 0:8d05f1ced202 | 79 | #define H_DA_On 0x02 // Humidity data avialable, set to 1 whenever a new humidity sample is available. |
HiroyukiIzumi | 0:8d05f1ced202 | 80 | #define H_DA_Off 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 81 | #define T_DA_On 0x01 // Temperature data avialable, set to 1 whenever a new humidity sample is available. |
HiroyukiIzumi | 0:8d05f1ced202 | 82 | #define T_DA_Off 0x00 |
HiroyukiIzumi | 0:8d05f1ced202 | 83 | |
HiroyukiIzumi | 0:8d05f1ced202 | 84 | bool hts221_init(void); |
HiroyukiIzumi | 0:8d05f1ced202 | 85 | |
HiroyukiIzumi | 0:8d05f1ced202 | 86 | void hts221_register_write(uint8_t register_address, const uint8_t value); |
HiroyukiIzumi | 0:8d05f1ced202 | 87 | |
HiroyukiIzumi | 0:8d05f1ced202 | 88 | void hts221_register_read(char register_address, char *destination, uint8_t number_of_bytes); |
HiroyukiIzumi | 0:8d05f1ced202 | 89 | |
HiroyukiIzumi | 0:8d05f1ced202 | 90 | bool hts221_verify_product_id(void); |
HiroyukiIzumi | 0:8d05f1ced202 | 91 | |
HiroyukiIzumi | 0:8d05f1ced202 | 92 | void HTS221_Calib(void); |
HiroyukiIzumi | 0:8d05f1ced202 | 93 | |
HiroyukiIzumi | 0:8d05f1ced202 | 94 | void HTS221_ReadTempHumi( float *pTemp , float *pHumi); |
HiroyukiIzumi | 0:8d05f1ced202 | 95 | |
HiroyukiIzumi | 0:8d05f1ced202 | 96 | float linear_interpolation(int16_t x0, float y0, int16_t x1, float y1, float mes); |
HiroyukiIzumi | 0:8d05f1ced202 | 97 | |
HiroyukiIzumi | 0:8d05f1ced202 | 98 | #endif /* HTS221_H */ |
HiroyukiIzumi | 0:8d05f1ced202 | 99 |