MEMS pressure sensor by STMicroelectronics. FIFO Hardware digital filter as default.
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Fork of LPS25H by
LPS25H.h@0:8fc511bd51af, 2015-02-22 (annotated)
- Committer:
- kenjiArai
- Date:
- Sun Feb 22 00:59:52 2015 +0000
- Revision:
- 0:8fc511bd51af
MEMS pressure sensor by STMicroelectronics. FIFO Hardware digital filter as default.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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kenjiArai | 0:8fc511bd51af | 1 | /* |
kenjiArai | 0:8fc511bd51af | 2 | * mbed library program |
kenjiArai | 0:8fc511bd51af | 3 | * LPS25H MEMS pressure sensor: 260-1260 hPa absolute digital output barometer |
kenjiArai | 0:8fc511bd51af | 4 | * made by STMicroelectronics |
kenjiArai | 0:8fc511bd51af | 5 | * http://www.st-japan.co.jp/web/catalog/sense_power/FM89/SC1316/PF255230 |
kenjiArai | 0:8fc511bd51af | 6 | * |
kenjiArai | 0:8fc511bd51af | 7 | * Copyright (c) 2015 Kenji Arai / JH1PJL |
kenjiArai | 0:8fc511bd51af | 8 | * http://www.page.sannet.ne.jp/kenjia/index.html |
kenjiArai | 0:8fc511bd51af | 9 | * http://mbed.org/users/kenjiArai/ |
kenjiArai | 0:8fc511bd51af | 10 | * Created: Feburary 21st, 2015 |
kenjiArai | 0:8fc511bd51af | 11 | * Revised: Feburary 22nd, 2015 |
kenjiArai | 0:8fc511bd51af | 12 | * |
kenjiArai | 0:8fc511bd51af | 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
kenjiArai | 0:8fc511bd51af | 14 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE |
kenjiArai | 0:8fc511bd51af | 15 | * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
kenjiArai | 0:8fc511bd51af | 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
kenjiArai | 0:8fc511bd51af | 17 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
kenjiArai | 0:8fc511bd51af | 18 | */ |
kenjiArai | 0:8fc511bd51af | 19 | /* |
kenjiArai | 0:8fc511bd51af | 20 | *---------------- REFERENCE ---------------------------------------------------------------------- |
kenjiArai | 0:8fc511bd51af | 21 | * Original Information |
kenjiArai | 0:8fc511bd51af | 22 | * http://www.st-japan.co.jp/web/jp/catalog/sense_power/FM89/SC1316/PF255230 |
kenjiArai | 0:8fc511bd51af | 23 | * AN4450 Application Note (as follows) |
kenjiArai | 0:8fc511bd51af | 24 | * http://www.st.com/st-web-ui/static/active/jp/ |
kenjiArai | 0:8fc511bd51af | 25 | * resource/technical/document/application_note/DM00108837.pdf |
kenjiArai | 0:8fc511bd51af | 26 | * Device kit |
kenjiArai | 0:8fc511bd51af | 27 | * http://akizukidenshi.com/catalog/g/gK-08338/ |
kenjiArai | 0:8fc511bd51af | 28 | */ |
kenjiArai | 0:8fc511bd51af | 29 | |
kenjiArai | 0:8fc511bd51af | 30 | #ifndef LPS25H_H |
kenjiArai | 0:8fc511bd51af | 31 | #define LPS25H_H |
kenjiArai | 0:8fc511bd51af | 32 | |
kenjiArai | 0:8fc511bd51af | 33 | #include "mbed.h" |
kenjiArai | 0:8fc511bd51af | 34 | |
kenjiArai | 0:8fc511bd51af | 35 | // LPS25H Address |
kenjiArai | 0:8fc511bd51af | 36 | // 7bit address = 0b101110x(0x5c or 0x5d depends on SA0/SDO) |
kenjiArai | 0:8fc511bd51af | 37 | #define LPS25H_G_CHIP_ADDR (0x5c << 1) // SA0(=SDO pin) = Ground |
kenjiArai | 0:8fc511bd51af | 38 | #define LPS25H_V_CHIP_ADDR (0x5d << 1) // SA0(=SDO pin) = Vdd |
kenjiArai | 0:8fc511bd51af | 39 | |
kenjiArai | 0:8fc511bd51af | 40 | // MODE Selection |
kenjiArai | 0:8fc511bd51af | 41 | #define FIFO_HW_FILTER 1 |
kenjiArai | 0:8fc511bd51af | 42 | #define FIFO_BYPASS 0 |
kenjiArai | 0:8fc511bd51af | 43 | |
kenjiArai | 0:8fc511bd51af | 44 | // LPS25H ID |
kenjiArai | 0:8fc511bd51af | 45 | #define I_AM_LPS25H 0xbd |
kenjiArai | 0:8fc511bd51af | 46 | |
kenjiArai | 0:8fc511bd51af | 47 | // Register's definition |
kenjiArai | 0:8fc511bd51af | 48 | #define LPS25H_WHO_AM_I 0x0f |
kenjiArai | 0:8fc511bd51af | 49 | #define LPS25H_RES_CONF 0x10 |
kenjiArai | 0:8fc511bd51af | 50 | |
kenjiArai | 0:8fc511bd51af | 51 | #define LPS25H_CTRL_REG1 0x20 |
kenjiArai | 0:8fc511bd51af | 52 | #define LPS25H_CTRL_REG2 0x21 |
kenjiArai | 0:8fc511bd51af | 53 | #define LPS25H_CTRL_REG3 0x22 |
kenjiArai | 0:8fc511bd51af | 54 | #define LPS25H_CTRL_REG4 0x23 |
kenjiArai | 0:8fc511bd51af | 55 | |
kenjiArai | 0:8fc511bd51af | 56 | #define LPS25H_STATUS_REG 0x27 |
kenjiArai | 0:8fc511bd51af | 57 | #define LPS25H_PRESS_POUT_XL 0x28 |
kenjiArai | 0:8fc511bd51af | 58 | #define LPS25H_PRESS_OUT_L 0x29 |
kenjiArai | 0:8fc511bd51af | 59 | #define LPS25H_PRESS_OUT_H 0x2a |
kenjiArai | 0:8fc511bd51af | 60 | #define LPS25H_TEMP_OUT_L 0x2b |
kenjiArai | 0:8fc511bd51af | 61 | #define LPS25H_TEMP_OUT_H 0x2c |
kenjiArai | 0:8fc511bd51af | 62 | |
kenjiArai | 0:8fc511bd51af | 63 | #define LPS25H_FIFO_CTRL 0x2e |
kenjiArai | 0:8fc511bd51af | 64 | #define LPS25H_FIFO_STATUS 0x2e |
kenjiArai | 0:8fc511bd51af | 65 | |
kenjiArai | 0:8fc511bd51af | 66 | // Control Reg. |
kenjiArai | 0:8fc511bd51af | 67 | #define PD (0UL << 7) |
kenjiArai | 0:8fc511bd51af | 68 | #define ACTIVE (1UL << 7) |
kenjiArai | 0:8fc511bd51af | 69 | #define ODR_ONESHOT (0UL << 4) |
kenjiArai | 0:8fc511bd51af | 70 | #define ODR_1HZ (1UL << 4) |
kenjiArai | 0:8fc511bd51af | 71 | #define ODR_7HZ (1UL << 4) |
kenjiArai | 0:8fc511bd51af | 72 | #define ODR_12R5HZ (2UL << 4) |
kenjiArai | 0:8fc511bd51af | 73 | #define ODR_25HZ (3UL << 4) |
kenjiArai | 0:8fc511bd51af | 74 | #define BDU_SET (1UL << 2) |
kenjiArai | 0:8fc511bd51af | 75 | #define CR_STD_SET (ACTIVE + ODR_7HZ + BDU_SET) |
kenjiArai | 0:8fc511bd51af | 76 | |
kenjiArai | 0:8fc511bd51af | 77 | // FIFO Control |
kenjiArai | 0:8fc511bd51af | 78 | #define FIFO_MEAN_MODE 0xc0 |
kenjiArai | 0:8fc511bd51af | 79 | #define FIFO_SAMPLE_2 0x01 |
kenjiArai | 0:8fc511bd51af | 80 | #define FIFO_SAMPLE_4 0x03 |
kenjiArai | 0:8fc511bd51af | 81 | #define FIFO_SAMPLE_8 0x07 |
kenjiArai | 0:8fc511bd51af | 82 | #define FIFO_SAMPLE_16 0x0f |
kenjiArai | 0:8fc511bd51af | 83 | #define FIFO_SAMPLE_32 0x1f |
kenjiArai | 0:8fc511bd51af | 84 | |
kenjiArai | 0:8fc511bd51af | 85 | /** Interface for STMicronics MEMS pressure sensor |
kenjiArai | 0:8fc511bd51af | 86 | * Chip: LPS25H |
kenjiArai | 0:8fc511bd51af | 87 | * |
kenjiArai | 0:8fc511bd51af | 88 | * @code |
kenjiArai | 0:8fc511bd51af | 89 | * #include "mbed.h" |
kenjiArai | 0:8fc511bd51af | 90 | * #include "LPS25H.h" |
kenjiArai | 0:8fc511bd51af | 91 | * |
kenjiArai | 0:8fc511bd51af | 92 | * // I2C Communication |
kenjiArai | 0:8fc511bd51af | 93 | * LPS25H baro(p_sda, p_scl, LPS25H_G_CHIP_ADDR); |
kenjiArai | 0:8fc511bd51af | 94 | * // If you connected I2C line not only this device but also other devices, |
kenjiArai | 0:8fc511bd51af | 95 | * // you need to declare following method. |
kenjiArai | 0:8fc511bd51af | 96 | * I2C i2c(dp5,dp27); // SDA, SCL |
kenjiArai | 0:8fc511bd51af | 97 | * LPS25H baro(i2c, LPS25H_G_CHIP_ADDR); |
kenjiArai | 0:8fc511bd51af | 98 | * |
kenjiArai | 0:8fc511bd51af | 99 | * int main() { |
kenjiArai | 0:8fc511bd51af | 100 | * while( trure){ |
kenjiArai | 0:8fc511bd51af | 101 | * baro.get(); |
kenjiArai | 0:8fc511bd51af | 102 | * printf("Presere: 0x%6.1f, Temperature: 0x%+4.1f\r\n", baro.pressue(), baro.temperature()); |
kenjiArai | 0:8fc511bd51af | 103 | * wait(1.0); |
kenjiArai | 0:8fc511bd51af | 104 | * } |
kenjiArai | 0:8fc511bd51af | 105 | * } |
kenjiArai | 0:8fc511bd51af | 106 | * @endcode |
kenjiArai | 0:8fc511bd51af | 107 | */ |
kenjiArai | 0:8fc511bd51af | 108 | |
kenjiArai | 0:8fc511bd51af | 109 | class LPS25H |
kenjiArai | 0:8fc511bd51af | 110 | { |
kenjiArai | 0:8fc511bd51af | 111 | public: |
kenjiArai | 0:8fc511bd51af | 112 | /** Configure data pin |
kenjiArai | 0:8fc511bd51af | 113 | * @param data SDA and SCL pins |
kenjiArai | 0:8fc511bd51af | 114 | * @param device address LPS25H(SA0=0 or 1), LPS25H_G_CHIP_ADDR or LPS25H_V_CHIP_ADDR |
kenjiArai | 0:8fc511bd51af | 115 | * @param Operation mode FIFO_HW_FILTER(default) or FIFO_BYPASS (Option parameter) |
kenjiArai | 0:8fc511bd51af | 116 | */ |
kenjiArai | 0:8fc511bd51af | 117 | LPS25H(PinName p_sda, PinName p_scl, uint8_t addr); |
kenjiArai | 0:8fc511bd51af | 118 | LPS25H(PinName p_sda, PinName p_scl, uint8_t addr, uint8_t mode); |
kenjiArai | 0:8fc511bd51af | 119 | |
kenjiArai | 0:8fc511bd51af | 120 | /** Configure data pin (with other devices on I2C line) |
kenjiArai | 0:8fc511bd51af | 121 | * @param I2C previous definition |
kenjiArai | 0:8fc511bd51af | 122 | * @param device address LPS25H(SA0=0 or 1), LPS25H_G_CHIP_ADDR or LPS25H_V_CHIP_ADDR |
kenjiArai | 0:8fc511bd51af | 123 | * @param Operation mode FIFO_HW_FILTER(default) or FIFO_BYPASS (Option parameter) |
kenjiArai | 0:8fc511bd51af | 124 | */ |
kenjiArai | 0:8fc511bd51af | 125 | LPS25H(I2C& p_i2c, uint8_t addr); |
kenjiArai | 0:8fc511bd51af | 126 | LPS25H(I2C& p_i2c, uint8_t addr, uint8_t mode); |
kenjiArai | 0:8fc511bd51af | 127 | |
kenjiArai | 0:8fc511bd51af | 128 | /** Start convertion & data save |
kenjiArai | 0:8fc511bd51af | 129 | * @param none |
kenjiArai | 0:8fc511bd51af | 130 | * @return none |
kenjiArai | 0:8fc511bd51af | 131 | */ |
kenjiArai | 0:8fc511bd51af | 132 | void get(void); |
kenjiArai | 0:8fc511bd51af | 133 | |
kenjiArai | 0:8fc511bd51af | 134 | /** Read pressure data |
kenjiArai | 0:8fc511bd51af | 135 | * @param none |
kenjiArai | 0:8fc511bd51af | 136 | * @return humidity |
kenjiArai | 0:8fc511bd51af | 137 | */ |
kenjiArai | 0:8fc511bd51af | 138 | float pressure(void); |
kenjiArai | 0:8fc511bd51af | 139 | |
kenjiArai | 0:8fc511bd51af | 140 | /** Read temperature data |
kenjiArai | 0:8fc511bd51af | 141 | * @param none |
kenjiArai | 0:8fc511bd51af | 142 | * @return temperature |
kenjiArai | 0:8fc511bd51af | 143 | */ |
kenjiArai | 0:8fc511bd51af | 144 | float temperature(void); |
kenjiArai | 0:8fc511bd51af | 145 | |
kenjiArai | 0:8fc511bd51af | 146 | /** Read a ID number |
kenjiArai | 0:8fc511bd51af | 147 | * @param none |
kenjiArai | 0:8fc511bd51af | 148 | * @return if STM MEMS LPS25H, it should be I_AM_ LPS25H |
kenjiArai | 0:8fc511bd51af | 149 | */ |
kenjiArai | 0:8fc511bd51af | 150 | uint8_t read_id(void); |
kenjiArai | 0:8fc511bd51af | 151 | |
kenjiArai | 0:8fc511bd51af | 152 | /** Read Data Ready flag |
kenjiArai | 0:8fc511bd51af | 153 | * @param none |
kenjiArai | 0:8fc511bd51af | 154 | * @return 1 = Ready |
kenjiArai | 0:8fc511bd51af | 155 | */ |
kenjiArai | 0:8fc511bd51af | 156 | uint8_t data_ready(void); |
kenjiArai | 0:8fc511bd51af | 157 | |
kenjiArai | 0:8fc511bd51af | 158 | /** Set I2C clock frequency |
kenjiArai | 0:8fc511bd51af | 159 | * @param freq. |
kenjiArai | 0:8fc511bd51af | 160 | * @return none |
kenjiArai | 0:8fc511bd51af | 161 | */ |
kenjiArai | 0:8fc511bd51af | 162 | void frequency(int hz); |
kenjiArai | 0:8fc511bd51af | 163 | |
kenjiArai | 0:8fc511bd51af | 164 | /** Read register (general purpose) |
kenjiArai | 0:8fc511bd51af | 165 | * @param register's address |
kenjiArai | 0:8fc511bd51af | 166 | * @return register data |
kenjiArai | 0:8fc511bd51af | 167 | */ |
kenjiArai | 0:8fc511bd51af | 168 | uint8_t read_reg(uint8_t addr); |
kenjiArai | 0:8fc511bd51af | 169 | |
kenjiArai | 0:8fc511bd51af | 170 | /** Write register (general purpose) |
kenjiArai | 0:8fc511bd51af | 171 | * @param register's address |
kenjiArai | 0:8fc511bd51af | 172 | * @param data |
kenjiArai | 0:8fc511bd51af | 173 | * @return none |
kenjiArai | 0:8fc511bd51af | 174 | */ |
kenjiArai | 0:8fc511bd51af | 175 | void write_reg(uint8_t addr, uint8_t data); |
kenjiArai | 0:8fc511bd51af | 176 | |
kenjiArai | 0:8fc511bd51af | 177 | protected: |
kenjiArai | 0:8fc511bd51af | 178 | I2C _i2c; |
kenjiArai | 0:8fc511bd51af | 179 | |
kenjiArai | 0:8fc511bd51af | 180 | void init(void); |
kenjiArai | 0:8fc511bd51af | 181 | |
kenjiArai | 0:8fc511bd51af | 182 | private: |
kenjiArai | 0:8fc511bd51af | 183 | char dt[6]; // working buffer |
kenjiArai | 0:8fc511bd51af | 184 | uint8_t LPS25H_addr; // Sensor address |
kenjiArai | 0:8fc511bd51af | 185 | uint8_t LPS25H_id; // ID |
kenjiArai | 0:8fc511bd51af | 186 | uint8_t LPS25H_ready; // Device is on I2C line = 1, not = 0 |
kenjiArai | 0:8fc511bd51af | 187 | uint8_t LPS25H_mode; // Operation mode |
kenjiArai | 0:8fc511bd51af | 188 | uint32_t press; // pressure raw data |
kenjiArai | 0:8fc511bd51af | 189 | int16_t temp; // temperature raw data |
kenjiArai | 0:8fc511bd51af | 190 | }; |
kenjiArai | 0:8fc511bd51af | 191 | |
kenjiArai | 0:8fc511bd51af | 192 | #endif // LPS25H_H |