Javascript wrappers for LPS22HB Sensor library
Dependencies: LPS22HB
LPS22HB_JS.cpp@0:c256bbccd0d4, 2017-10-10 (annotated)
- Committer:
- akhtar.syedzeeshan@gmail.com
- Date:
- Tue Oct 10 11:51:55 2017 +0200
- Revision:
- 0:c256bbccd0d4
- Child:
- 1:6b7b798e36ae
Initial Commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 1 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 2 | ****************************************************************************** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 3 | * @file LPS22HB_JS.cpp |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 4 | * @author ST |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 5 | * @version V1.0.0 |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 6 | * @date 9 October 2017 |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 7 | * @brief Implementation of an LPS22HB Pressure and Temperature sensor for use |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 8 | * with Javascript. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 9 | ****************************************************************************** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 10 | * @attention |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 11 | * |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 12 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 13 | * |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 14 | * Redistribution and use in source and binary forms, with or without modification, |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 15 | * are permitted provided that the following conditions are met: |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 16 | * 1. Redistributions of source code must retain the above copyright notice, |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 17 | * this list of conditions and the following disclaimer. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 19 | * this list of conditions and the following disclaimer in the documentation |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 20 | * and/or other materials provided with the distribution. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 21 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 22 | * may be used to endorse or promote products derived from this software |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 23 | * without specific prior written permission. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 24 | * |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 28 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 31 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 32 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 33 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 34 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 35 | * |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 36 | ****************************************************************************** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 37 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 38 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 39 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 40 | /* Includes ------------------------------------------------------------------*/ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 41 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 42 | #include "LPS22HB_JS.h" |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 43 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 44 | #include <stdlib.h> /* atoi */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 45 | #include "mbed.h" |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 46 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 47 | /* Helper function for printing floats & doubles */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 48 | static char *print_double(char* str, double v, int decimalDigits=2) |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 49 | { |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 50 | int i = 1; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 51 | int intPart, fractPart; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 52 | int len; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 53 | char *ptr; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 54 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 55 | /* prepare decimal digits multiplicator */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 56 | for (;decimalDigits!=0; i*=10, decimalDigits--); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 57 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 58 | /* calculate integer & fractinal parts */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 59 | intPart = (int)v; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 60 | fractPart = (int)((v-(double)(int)v)*i); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 61 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 62 | /* fill in integer part */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 63 | sprintf(str, "%i.", intPart); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 64 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 65 | /* prepare fill in of fractional part */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 66 | len = strlen(str); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 67 | ptr = &str[len]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 68 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 69 | /* fill in leading fractional zeros */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 70 | for (i/=10;i>1; i/=10, ptr++) { |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 71 | if (fractPart >= i) { |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 72 | break; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 73 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 74 | *ptr = '0'; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 75 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 76 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 77 | /* fill in (rest of) fractional part */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 78 | sprintf(ptr, "%i", fractPart); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 79 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 80 | return str; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 81 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 82 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 83 | /* Class Implementation ------------------------------------------------------*/ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 84 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 85 | /** Constructor |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 86 | * @brief Initializing the component. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 87 | * @param i2c object of an helper class which handles the I2C peripheral |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 88 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 89 | LPS22HB_JS::LPS22HB_JS(DevI2C &i2c){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 90 | press_temp = new LPS22HBSensor(&i2c); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 91 | press_temp->init(NULL); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 92 | press_temp->enable(); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 93 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 94 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 95 | /** Destructor |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 96 | * @brief Recycling the component. |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 97 | * Deletes the Sensor Object |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 98 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 99 | LPS22HB_JS::~LPS22HB_JS(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 100 | if(press_temp != NULL){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 101 | delete press_temp; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 102 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 103 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 104 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 105 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 106 | * @brief Read ID address of LPS22HB |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 107 | * @retval The ID of the Sensor |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 108 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 109 | uint8_t LPS22HB_JS::readID(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 110 | uint8_t result; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 111 | press_temp->read_id(&result); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 112 | return result; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 113 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 114 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 115 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 116 | * @brief Get the temperature reading from LPS22HB |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 117 | * @retval Temperature value |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 118 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 119 | float LPS22HB_JS::get_temperature(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 120 | float value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 121 | press_temp->get_temperature(&value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 122 | return value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 123 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 124 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 125 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 126 | * @brief Get the temperature reading from LPS22HB |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 127 | * @retval Temperature value in string form |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 128 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 129 | unsigned char *LPS22HB_JS::get_temperature_string(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 130 | float value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 131 | char buffer[32]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 132 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 133 | press_temp->get_temperature(&value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 134 | print_double(buffer, value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 135 | unsigned char *r = new unsigned char[6]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 136 | for(int i = 0; i < 6; i++){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 137 | r[i] = buffer[i]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 138 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 139 | r[5] = '\0'; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 140 | return r; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 141 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 142 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 143 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 144 | * @brief Get the pressure reading from LPS22HB |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 145 | * @retval pressure value |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 146 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 147 | float LPS22HB_JS::get_pressure(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 148 | float value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 149 | press_temp->get_pressure(&value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 150 | return value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 151 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 152 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 153 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 154 | /** |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 155 | * @brief Get the pressure reading from LPS22HB |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 156 | * @retval pressure value in string form |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 157 | */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 158 | unsigned char *LPS22HB_JS::get_pressure_string(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 159 | float value; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 160 | char buffer[32]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 161 | press_temp->get_pressure(&value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 162 | print_double(buffer, value); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 163 | unsigned char *r = new unsigned char[6]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 164 | for(int i = 0; i < 6; i++){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 165 | r[i] = buffer[i]; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 166 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 167 | r[5] = '\0'; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 168 | return r; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 169 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 170 | uint8_t LPS22HB_JS::give(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 171 | return 43; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 172 | } |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 173 | |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 174 | /* Simple main function */ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 175 | void LPS22HB_JS::print_sensor_info(){ |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 176 | uint8_t id; |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 177 | press_temp->read_id(&id); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 178 | printf("LPS22HB pressure & temperature = 0x%X\r\n", id); |
akhtar.syedzeeshan@gmail.com | 0:c256bbccd0d4 | 179 | } |