Library for supporting the Nucleo Sensor Shield.
Dependents: Nucleo_Sensors_Demo m2x-temp_ethernet_demo m2x-MEMS_ACKme_Wifi_demo m2x_MEMS_Ublox_Cellular_demo ... more
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Components/LPS25H/lps25.cpp@1:354f61ffdcfb, 2014-12-13 (annotated)
- Committer:
- dangriffin
- Date:
- Sat Dec 13 02:33:16 2014 +0000
- Revision:
- 1:354f61ffdcfb
- Parent:
- 0:0433918efb54
- Child:
- 2:57888ec40e75
Cleanup warnings.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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dangriffin | 0:0433918efb54 | 1 | /** |
dangriffin | 0:0433918efb54 | 2 | ****************************************************************************** |
dangriffin | 0:0433918efb54 | 3 | * @file x_cube_mems_lps25.cpp |
dangriffin | 0:0433918efb54 | 4 | * @author AST / EST |
dangriffin | 0:0433918efb54 | 5 | * @version V0.0.1 |
dangriffin | 0:0433918efb54 | 6 | * @date 1-December-2014 |
dangriffin | 0:0433918efb54 | 7 | * @brief Implementation file for component LPS25H |
dangriffin | 0:0433918efb54 | 8 | ****************************************************************************** |
dangriffin | 0:0433918efb54 | 9 | * @attention |
dangriffin | 0:0433918efb54 | 10 | * |
dangriffin | 0:0433918efb54 | 11 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
dangriffin | 0:0433918efb54 | 12 | * |
dangriffin | 0:0433918efb54 | 13 | * Redistribution and use in source and binary forms, with or without modification, |
dangriffin | 0:0433918efb54 | 14 | * are permitted provided that the following conditions are met: |
dangriffin | 0:0433918efb54 | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
dangriffin | 0:0433918efb54 | 16 | * this list of conditions and the following disclaimer. |
dangriffin | 0:0433918efb54 | 17 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
dangriffin | 0:0433918efb54 | 18 | * this list of conditions and the following disclaimer in the documentation |
dangriffin | 0:0433918efb54 | 19 | * and/or other materials provided with the distribution. |
dangriffin | 0:0433918efb54 | 20 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
dangriffin | 0:0433918efb54 | 21 | * may be used to endorse or promote products derived from this software |
dangriffin | 0:0433918efb54 | 22 | * without specific prior written permission. |
dangriffin | 0:0433918efb54 | 23 | * |
dangriffin | 0:0433918efb54 | 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
dangriffin | 0:0433918efb54 | 25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
dangriffin | 0:0433918efb54 | 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
dangriffin | 0:0433918efb54 | 27 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
dangriffin | 0:0433918efb54 | 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
dangriffin | 0:0433918efb54 | 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
dangriffin | 0:0433918efb54 | 30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
dangriffin | 0:0433918efb54 | 31 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
dangriffin | 0:0433918efb54 | 32 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
dangriffin | 0:0433918efb54 | 33 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
dangriffin | 0:0433918efb54 | 34 | * |
dangriffin | 0:0433918efb54 | 35 | ****************************************************************************** |
dangriffin | 0:0433918efb54 | 36 | */ |
dangriffin | 0:0433918efb54 | 37 | |
dangriffin | 0:0433918efb54 | 38 | /* Includes ------------------------------------------------------------------*/ |
dangriffin | 0:0433918efb54 | 39 | #include "mbed.h" |
dangriffin | 0:0433918efb54 | 40 | #include "lps25h.h" |
dangriffin | 0:0433918efb54 | 41 | #include "lps25h_platform.h" |
dangriffin | 0:0433918efb54 | 42 | |
dangriffin | 0:0433918efb54 | 43 | /* Methods -------------------------------------------------------------------*/ |
dangriffin | 0:0433918efb54 | 44 | |
dangriffin | 0:0433918efb54 | 45 | /** |
dangriffin | 0:0433918efb54 | 46 | * @brief Read LPS25H output register, and calculate the pressure in mbar. |
dangriffin | 0:0433918efb54 | 47 | * @param float *pressure. Pressure value in mbar. |
dangriffin | 0:0433918efb54 | 48 | * @retval LPS25H_ERROR or LPS25H_OK. |
dangriffin | 0:0433918efb54 | 49 | */ |
dangriffin | 0:0433918efb54 | 50 | void LPS25H::GetPressure(float* pfData) |
dangriffin | 0:0433918efb54 | 51 | { |
dangriffin | 0:0433918efb54 | 52 | |
dangriffin | 0:0433918efb54 | 53 | uint32_t raw_press = 0; |
dangriffin | 0:0433918efb54 | 54 | |
dangriffin | 0:0433918efb54 | 55 | if(isInitialized()==0) |
dangriffin | 0:0433918efb54 | 56 | { |
dangriffin | 0:0433918efb54 | 57 | pfData = 0; |
dangriffin | 0:0433918efb54 | 58 | return; |
dangriffin | 0:0433918efb54 | 59 | } |
dangriffin | 0:0433918efb54 | 60 | |
dangriffin | 0:0433918efb54 | 61 | ReadRawPressure(&raw_press); |
dangriffin | 0:0433918efb54 | 62 | |
dangriffin | 0:0433918efb54 | 63 | /* return the built value */ |
dangriffin | 0:0433918efb54 | 64 | //tempInt = raw_press / 4096; |
dangriffin | 0:0433918efb54 | 65 | |
dangriffin | 0:0433918efb54 | 66 | *pfData = (float)raw_press /4096.0f; |
dangriffin | 0:0433918efb54 | 67 | } |
dangriffin | 0:0433918efb54 | 68 | |
dangriffin | 0:0433918efb54 | 69 | /** |
dangriffin | 0:0433918efb54 | 70 | * @brief Read LPS25H output register, and calculate the raw pressure. |
dangriffin | 0:0433918efb54 | 71 | * @param uint32_t: raw_press. Pressure raw value. |
dangriffin | 0:0433918efb54 | 72 | * @retval LPS25H_ERROR or LPS25H_OK. |
dangriffin | 0:0433918efb54 | 73 | */ |
dangriffin | 0:0433918efb54 | 74 | void LPS25H::ReadRawPressure(uint32_t *raw_press) |
dangriffin | 0:0433918efb54 | 75 | { |
dangriffin | 0:0433918efb54 | 76 | uint8_t buffer[3], i; |
dangriffin | 0:0433918efb54 | 77 | uint32_t tempVal=0; |
dangriffin | 0:0433918efb54 | 78 | int ret; |
dangriffin | 0:0433918efb54 | 79 | |
dangriffin | 0:0433918efb54 | 80 | /* Read the register content */ |
dangriffin | 0:0433918efb54 | 81 | //PRESSURE_IO_Read(buffer, LPS25H_SlaveAddress, LPS25H_PRESS_POUT_XL_ADDR+0x80, 3); |
dangriffin | 0:0433918efb54 | 82 | ret = dev_i2c.i2c_read(buffer, LPS25H_ADDRESS_HIGH, LPS25H_PRESS_POUT_XL_ADDR+0x80, 3); |
dangriffin | 0:0433918efb54 | 83 | |
dangriffin | 1:354f61ffdcfb | 84 | if (ret == 0) |
dangriffin | 1:354f61ffdcfb | 85 | { |
dangriffin | 1:354f61ffdcfb | 86 | /* Build the raw data */ |
dangriffin | 1:354f61ffdcfb | 87 | for (i = 0 ; i < 3 ; i++) |
dangriffin | 1:354f61ffdcfb | 88 | tempVal |= (((uint32_t) buffer[i]) << (8 * i)); |
dangriffin | 0:0433918efb54 | 89 | |
dangriffin | 1:354f61ffdcfb | 90 | /* convert the 2's complement 24 bit to 2's complement 32 bit */ |
dangriffin | 1:354f61ffdcfb | 91 | if (tempVal & 0x00800000) |
dangriffin | 1:354f61ffdcfb | 92 | tempVal |= 0xFF000000; |
dangriffin | 0:0433918efb54 | 93 | |
dangriffin | 1:354f61ffdcfb | 94 | /* return the built value */ |
dangriffin | 1:354f61ffdcfb | 95 | *raw_press = ((uint32_t) tempVal); |
dangriffin | 1:354f61ffdcfb | 96 | } |
dangriffin | 0:0433918efb54 | 97 | } |
dangriffin | 0:0433918efb54 | 98 | |
dangriffin | 0:0433918efb54 | 99 | /** |
dangriffin | 0:0433918efb54 | 100 | * @brief Read ID address of HTS221 |
dangriffin | 0:0433918efb54 | 101 | * @param Device ID address |
dangriffin | 0:0433918efb54 | 102 | * @retval ID name |
dangriffin | 0:0433918efb54 | 103 | */ |
dangriffin | 0:0433918efb54 | 104 | uint8_t LPS25H::ReadID(void) |
dangriffin | 0:0433918efb54 | 105 | { |
dangriffin | 0:0433918efb54 | 106 | uint8_t tmp; |
dangriffin | 0:0433918efb54 | 107 | |
dangriffin | 0:0433918efb54 | 108 | /* Read the register content */ |
dangriffin | 0:0433918efb54 | 109 | int ret; |
dangriffin | 0:0433918efb54 | 110 | //PRESSURE_IO_Read(&tmp, LPS25H_SlaveAddress, LPS25H_WHO_AM_I_ADDR, 1); |
dangriffin | 0:0433918efb54 | 111 | ret = dev_i2c.i2c_read(&tmp, LPS25H_ADDRESS_HIGH, LPS25H_WHO_AM_I_ADDR, 1); |
dangriffin | 0:0433918efb54 | 112 | |
dangriffin | 0:0433918efb54 | 113 | /* Return the ID */ |
dangriffin | 1:354f61ffdcfb | 114 | return ((ret == 0) ? (uint8_t)tmp : 0); |
dangriffin | 0:0433918efb54 | 115 | } |
dangriffin | 0:0433918efb54 | 116 | |
dangriffin | 0:0433918efb54 | 117 | /** |
dangriffin | 0:0433918efb54 | 118 | * @brief Set HTS221 Initialization. |
dangriffin | 0:0433918efb54 | 119 | * @param InitStruct: it contains the configuration setting for the HTS221. |
dangriffin | 0:0433918efb54 | 120 | * @retval None |
dangriffin | 0:0433918efb54 | 121 | */ |
dangriffin | 0:0433918efb54 | 122 | void LPS25H::Init() { |
dangriffin | 0:0433918efb54 | 123 | int ret; |
dangriffin | 0:0433918efb54 | 124 | uint8_t tmp1 = 0x00; |
dangriffin | 0:0433918efb54 | 125 | |
dangriffin | 0:0433918efb54 | 126 | Power_ON(); |
dangriffin | 0:0433918efb54 | 127 | |
dangriffin | 0:0433918efb54 | 128 | //PRESSURE_IO_Read(&tmp1, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 0:0433918efb54 | 129 | ret = dev_i2c.i2c_read(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 0:0433918efb54 | 130 | |
dangriffin | 1:354f61ffdcfb | 131 | if (ret == 0) |
dangriffin | 1:354f61ffdcfb | 132 | { |
dangriffin | 1:354f61ffdcfb | 133 | /* Output Data Rate selection */ |
dangriffin | 1:354f61ffdcfb | 134 | tmp1 &= ~(LPS25H_ODR_MASK); |
dangriffin | 1:354f61ffdcfb | 135 | tmp1 |= LPS25H_ODR_1Hz; |
dangriffin | 0:0433918efb54 | 136 | |
dangriffin | 1:354f61ffdcfb | 137 | /* Interrupt circuit selection */ |
dangriffin | 1:354f61ffdcfb | 138 | tmp1 &= ~(LPS25H_DIFF_EN_MASK); |
dangriffin | 1:354f61ffdcfb | 139 | tmp1 |= LPS25H_DIFF_ENABLE; |
dangriffin | 0:0433918efb54 | 140 | |
dangriffin | 1:354f61ffdcfb | 141 | /* Block Data Update selection */ |
dangriffin | 1:354f61ffdcfb | 142 | tmp1 &= ~(LPS25H_BDU_MASK); |
dangriffin | 1:354f61ffdcfb | 143 | tmp1 |= LPS25H_BDU_CONT; |
dangriffin | 1:354f61ffdcfb | 144 | |
dangriffin | 1:354f61ffdcfb | 145 | /* Serial Interface Mode selection */ |
dangriffin | 1:354f61ffdcfb | 146 | tmp1 &= ~(LPS25H_SPI_SIM_MASK); |
dangriffin | 1:354f61ffdcfb | 147 | tmp1 |= LPS25H_SPI_SIM_3W; |
dangriffin | 0:0433918efb54 | 148 | |
dangriffin | 1:354f61ffdcfb | 149 | //PRESSURE_IO_Write(&tmp1, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 1:354f61ffdcfb | 150 | ret = dev_i2c.i2c_write(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 1:354f61ffdcfb | 151 | } |
dangriffin | 1:354f61ffdcfb | 152 | |
dangriffin | 1:354f61ffdcfb | 153 | if (ret == 0) |
dangriffin | 1:354f61ffdcfb | 154 | { |
dangriffin | 1:354f61ffdcfb | 155 | //PRESSURE_IO_Read(&tmp1, LPS25H_SlaveAddress, LPS25H_RES_CONF_ADDR, 1); |
dangriffin | 1:354f61ffdcfb | 156 | ret = dev_i2c.i2c_read(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_RES_CONF_ADDR, 1); |
dangriffin | 0:0433918efb54 | 157 | |
dangriffin | 1:354f61ffdcfb | 158 | /* Pressure Res selection */ |
dangriffin | 1:354f61ffdcfb | 159 | tmp1 &= ~(LPS25H_P_RES_MASK); |
dangriffin | 1:354f61ffdcfb | 160 | tmp1 |= LPS25H_P_RES_AVG_32; |
dangriffin | 0:0433918efb54 | 161 | |
dangriffin | 1:354f61ffdcfb | 162 | /* Temperature Res selection */ |
dangriffin | 1:354f61ffdcfb | 163 | tmp1 &= ~(LPS25H_T_RES_MASK); |
dangriffin | 1:354f61ffdcfb | 164 | tmp1 |= LPS25H_T_RES_AVG_16; |
dangriffin | 0:0433918efb54 | 165 | |
dangriffin | 1:354f61ffdcfb | 166 | //PRESSURE_IO_Write(&tmp1, LPS25H_SlaveAddress, LPS25H_RES_CONF_ADDR, 1); |
dangriffin | 1:354f61ffdcfb | 167 | ret = dev_i2c.i2c_write(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_RES_CONF_ADDR, 1); |
dangriffin | 1:354f61ffdcfb | 168 | } |
dangriffin | 0:0433918efb54 | 169 | |
dangriffin | 1:354f61ffdcfb | 170 | if (ret == 0) |
dangriffin | 0:0433918efb54 | 171 | { |
dangriffin | 1:354f61ffdcfb | 172 | if(ReadID() == I_AM_LPS25H) |
dangriffin | 1:354f61ffdcfb | 173 | { |
dangriffin | 1:354f61ffdcfb | 174 | Lps25hInitialized = 1; |
dangriffin | 1:354f61ffdcfb | 175 | //ret = HUM_TEMP_OK; |
dangriffin | 1:354f61ffdcfb | 176 | } |
dangriffin | 0:0433918efb54 | 177 | } |
dangriffin | 0:0433918efb54 | 178 | |
dangriffin | 0:0433918efb54 | 179 | return; |
dangriffin | 0:0433918efb54 | 180 | } |
dangriffin | 0:0433918efb54 | 181 | |
dangriffin | 0:0433918efb54 | 182 | int LPS25H::Power_ON() { |
dangriffin | 0:0433918efb54 | 183 | uint8_t tmpreg; |
dangriffin | 0:0433918efb54 | 184 | int ret; |
dangriffin | 0:0433918efb54 | 185 | |
dangriffin | 0:0433918efb54 | 186 | /* Read the register content */ |
dangriffin | 0:0433918efb54 | 187 | //PRESSURE_IO_Read(&tmpreg, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 0:0433918efb54 | 188 | ret = dev_i2c.i2c_read(&tmpreg, 0xBA, 0x20, 1); |
dangriffin | 0:0433918efb54 | 189 | |
dangriffin | 0:0433918efb54 | 190 | /* Set the power down bit */ |
dangriffin | 0:0433918efb54 | 191 | tmpreg |= LPS25H_MODE_ACTIVE; |
dangriffin | 0:0433918efb54 | 192 | |
dangriffin | 0:0433918efb54 | 193 | /* Write register */ |
dangriffin | 0:0433918efb54 | 194 | //PRESSURE_IO_Write(&tmpreg, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 0:0433918efb54 | 195 | ret = dev_i2c.i2c_write(&tmpreg, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); |
dangriffin | 0:0433918efb54 | 196 | return ret; |
dangriffin | 0:0433918efb54 | 197 | |
dangriffin | 0:0433918efb54 | 198 | } |
dangriffin | 0:0433918efb54 | 199 | |
dangriffin | 0:0433918efb54 | 200 | int LPS25H::LPS25H_Calibration() { |
dangriffin | 0:0433918efb54 | 201 | |
dangriffin | 1:354f61ffdcfb | 202 | int ret = 0; |
dangriffin | 0:0433918efb54 | 203 | |
dangriffin | 0:0433918efb54 | 204 | if(Lps25hInitialized == 1) |
dangriffin | 0:0433918efb54 | 205 | { |
dangriffin | 0:0433918efb54 | 206 | return 1; //TODO: Error Codes definitions |
dangriffin | 0:0433918efb54 | 207 | } |
dangriffin | 0:0433918efb54 | 208 | |
dangriffin | 0:0433918efb54 | 209 | return ret; |
dangriffin | 0:0433918efb54 | 210 | } |