Taylor Gy / driver_mbed_HP20x

Driver for HP20X sensor

Dependents:   8-0_OneNet_IoT_demo

driver_mbed_HP20x.cpp@0:2ee0bc82e7b8, 2017-03-29 (annotated)

Committer:
TaylorGy
Date:
Wed Mar 29 03:09:38 2017 +0000
Revision:
0:2ee0bc82e7b8
driver for HP20x sensor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TaylorGy 0:2ee0bc82e7b8 1 /*
TaylorGy 0:2ee0bc82e7b8 2 * File name : HP20x_dev.cpp
TaylorGy 0:2ee0bc82e7b8 3 * Description: Driver for I2C PRECISION BAROMETER AND ALTIMETER [HP206C]
TaylorGy 0:2ee0bc82e7b8 4 * Author : Oliver Wang from Seeed studio
TaylorGy 0:2ee0bc82e7b8 5 * Version : V0.1
TaylorGy 0:2ee0bc82e7b8 6 * Create Time: 2014/04
TaylorGy 0:2ee0bc82e7b8 7 * Change Log :
TaylorGy 0:2ee0bc82e7b8 8 */
TaylorGy 0:2ee0bc82e7b8 9
TaylorGy 0:2ee0bc82e7b8 10 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 11 /*** Include files ***/
TaylorGy 0:2ee0bc82e7b8 12 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 13 #include "driver_mbed_HP20x.h"
TaylorGy 0:2ee0bc82e7b8 14 // #include <Wire.h>
TaylorGy 0:2ee0bc82e7b8 15 // #include <Arduino.h>
TaylorGy 0:2ee0bc82e7b8 16 #include "driver_mbed_KalmanFilter.h"
TaylorGy 0:2ee0bc82e7b8 17 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 18 /*** Local Variable ***/
TaylorGy 0:2ee0bc82e7b8 19 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 20 HP20x_dev HP20x;
TaylorGy 0:2ee0bc82e7b8 21 I2C i2c_HP20x(PB_3, PB_10);
TaylorGy 0:2ee0bc82e7b8 22
TaylorGy 0:2ee0bc82e7b8 23 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 24 /*** Class member Functions ***/
TaylorGy 0:2ee0bc82e7b8 25 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 26 /*
TaylorGy 0:2ee0bc82e7b8 27 **@ Function name: HP20x_dev
TaylorGy 0:2ee0bc82e7b8 28 **@ Description: Constructor
TaylorGy 0:2ee0bc82e7b8 29 **@ Input: none
TaylorGy 0:2ee0bc82e7b8 30 **@ OutPut: none
TaylorGy 0:2ee0bc82e7b8 31 **@ Retval: none
TaylorGy 0:2ee0bc82e7b8 32 */
TaylorGy 0:2ee0bc82e7b8 33 HP20x_dev::HP20x_dev()
TaylorGy 0:2ee0bc82e7b8 34 {
TaylorGy 0:2ee0bc82e7b8 35 OSR_CFG = HP20X_CONVERT_OSR1024;
TaylorGy 0:2ee0bc82e7b8 36 OSR_ConvertTime = 25;
TaylorGy 0:2ee0bc82e7b8 37 }
TaylorGy 0:2ee0bc82e7b8 38
TaylorGy 0:2ee0bc82e7b8 39 /*
TaylorGy 0:2ee0bc82e7b8 40 **@ Function name: begin
TaylorGy 0:2ee0bc82e7b8 41 **@ Description: Initialize HP20x_dev
TaylorGy 0:2ee0bc82e7b8 42 **@ Input: none
TaylorGy 0:2ee0bc82e7b8 43 **@ OutPut: none
TaylorGy 0:2ee0bc82e7b8 44 **@ Retval: none
TaylorGy 0:2ee0bc82e7b8 45 */
TaylorGy 0:2ee0bc82e7b8 46 void HP20x_dev::begin()
TaylorGy 0:2ee0bc82e7b8 47 {
TaylorGy 0:2ee0bc82e7b8 48 // Wire.begin();
TaylorGy 0:2ee0bc82e7b8 49 /* Reset HP20x_dev */
TaylorGy 0:2ee0bc82e7b8 50 HP20x.HP20X_IIC_WriteCmd(HP20X_SOFT_RST);
TaylorGy 0:2ee0bc82e7b8 51 }
TaylorGy 0:2ee0bc82e7b8 52
TaylorGy 0:2ee0bc82e7b8 53 /*
TaylorGy 0:2ee0bc82e7b8 54 **@ Function name: isAvailable
TaylorGy 0:2ee0bc82e7b8 55 **@ Description: Indicate whether it's available
TaylorGy 0:2ee0bc82e7b8 56 **@ Input: none
TaylorGy 0:2ee0bc82e7b8 57 **@ OutPut: none
TaylorGy 0:2ee0bc82e7b8 58 **@ Retval: uchar
TaylorGy 0:2ee0bc82e7b8 59 */
TaylorGy 0:2ee0bc82e7b8 60 uchar HP20x_dev::isAvailable()
TaylorGy 0:2ee0bc82e7b8 61 {
TaylorGy 0:2ee0bc82e7b8 62 uchar ret = HP20x.HP20X_IIC_ReadReg(REG_PARA);
TaylorGy 0:2ee0bc82e7b8 63 return ret;
TaylorGy 0:2ee0bc82e7b8 64 }
TaylorGy 0:2ee0bc82e7b8 65 /*
TaylorGy 0:2ee0bc82e7b8 66 **@ Function name: ReadTemperature
TaylorGy 0:2ee0bc82e7b8 67 **@ Description: Read Temperature from HP20x_dev
TaylorGy 0:2ee0bc82e7b8 68 **@ Input:
TaylorGy 0:2ee0bc82e7b8 69 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 70 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 71 */
TaylorGy 0:2ee0bc82e7b8 72 ulong HP20x_dev::ReadTemperature(void)
TaylorGy 0:2ee0bc82e7b8 73 {
TaylorGy 0:2ee0bc82e7b8 74
TaylorGy 0:2ee0bc82e7b8 75 HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG); //ADC convert
TaylorGy 0:2ee0bc82e7b8 76
TaylorGy 0:2ee0bc82e7b8 77 wait_ms(int(OSR_ConvertTime)); //difference OSR_CFG will be difference OSR_ConvertTime
TaylorGy 0:2ee0bc82e7b8 78 HP20X_IIC_WriteCmd(HP20X_READ_T);
TaylorGy 0:2ee0bc82e7b8 79 ulong Temperature = HP20X_IIC_ReadData();
TaylorGy 0:2ee0bc82e7b8 80 return Temperature;
TaylorGy 0:2ee0bc82e7b8 81 }
TaylorGy 0:2ee0bc82e7b8 82
TaylorGy 0:2ee0bc82e7b8 83 /*
TaylorGy 0:2ee0bc82e7b8 84 **@ Function name: ReadPressure
TaylorGy 0:2ee0bc82e7b8 85 **@ Description: Read Pressure value
TaylorGy 0:2ee0bc82e7b8 86 **@ Input:
TaylorGy 0:2ee0bc82e7b8 87 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 88 **@ Retval: value
TaylorGy 0:2ee0bc82e7b8 89 */
TaylorGy 0:2ee0bc82e7b8 90
TaylorGy 0:2ee0bc82e7b8 91 ulong HP20x_dev::ReadPressure(void)
TaylorGy 0:2ee0bc82e7b8 92 {
TaylorGy 0:2ee0bc82e7b8 93 HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
TaylorGy 0:2ee0bc82e7b8 94 wait_ms(int(OSR_ConvertTime));
TaylorGy 0:2ee0bc82e7b8 95 HP20X_IIC_WriteCmd(HP20X_READ_P);
TaylorGy 0:2ee0bc82e7b8 96 ulong Pressure = HP20X_IIC_ReadData();
TaylorGy 0:2ee0bc82e7b8 97 return Pressure;
TaylorGy 0:2ee0bc82e7b8 98 }
TaylorGy 0:2ee0bc82e7b8 99
TaylorGy 0:2ee0bc82e7b8 100 /*
TaylorGy 0:2ee0bc82e7b8 101 **@ Function name: ReadAltitude
TaylorGy 0:2ee0bc82e7b8 102 **@ Description: Read Pressure value
TaylorGy 0:2ee0bc82e7b8 103 **@ Input:
TaylorGy 0:2ee0bc82e7b8 104 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 105 **@ Retval: value
TaylorGy 0:2ee0bc82e7b8 106 */
TaylorGy 0:2ee0bc82e7b8 107 ulong HP20x_dev::ReadAltitude(void)
TaylorGy 0:2ee0bc82e7b8 108 {
TaylorGy 0:2ee0bc82e7b8 109 HP20X_IIC_WriteCmd(HP20X_READ_A);
TaylorGy 0:2ee0bc82e7b8 110 ulong Altitude = HP20X_IIC_ReadData();
TaylorGy 0:2ee0bc82e7b8 111 return Altitude;
TaylorGy 0:2ee0bc82e7b8 112 }
TaylorGy 0:2ee0bc82e7b8 113
TaylorGy 0:2ee0bc82e7b8 114 /*
TaylorGy 0:2ee0bc82e7b8 115 void ReadPressureAndTemperature(void)
TaylorGy 0:2ee0bc82e7b8 116 {
TaylorGy 0:2ee0bc82e7b8 117 HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
TaylorGy 0:2ee0bc82e7b8 118 Timer_Delayxms(OSR_ConvertTime*2);
TaylorGy 0:2ee0bc82e7b8 119 HP20X_IIC_WriteCmd(HP20X_READ_PT);
TaylorGy 0:2ee0bc82e7b8 120
TaylorGy 0:2ee0bc82e7b8 121 Temperature=HP20X_IIC_ReadData();
TaylorGy 0:2ee0bc82e7b8 122
TaylorGy 0:2ee0bc82e7b8 123 Pressure=HP20X_IIC_ReadData3byte();
TaylorGy 0:2ee0bc82e7b8 124 }
TaylorGy 0:2ee0bc82e7b8 125
TaylorGy 0:2ee0bc82e7b8 126 void IIC_ReadAltitudeAndTemperature(void)
TaylorGy 0:2ee0bc82e7b8 127 {
TaylorGy 0:2ee0bc82e7b8 128
TaylorGy 0:2ee0bc82e7b8 129 HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
TaylorGy 0:2ee0bc82e7b8 130 Timer_Delayxms(OSR_ConvertTime*2);
TaylorGy 0:2ee0bc82e7b8 131 HP20X_IIC_WriteCmd(HP20X_READ_AT);
TaylorGy 0:2ee0bc82e7b8 132
TaylorGy 0:2ee0bc82e7b8 133 Temperature=HP20X_IIC_ReadData();
TaylorGy 0:2ee0bc82e7b8 134 IIC_ACK();
TaylorGy 0:2ee0bc82e7b8 135 Altitude=HP20X_IIC_ReadData3byte();
TaylorGy 0:2ee0bc82e7b8 136 IIC_NoAck();
TaylorGy 0:2ee0bc82e7b8 137 IIC_Stop();
TaylorGy 0:2ee0bc82e7b8 138
TaylorGy 0:2ee0bc82e7b8 139 }*/
TaylorGy 0:2ee0bc82e7b8 140 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 141 /*** Local Functions ***/
TaylorGy 0:2ee0bc82e7b8 142 /****************************************************************************/
TaylorGy 0:2ee0bc82e7b8 143
TaylorGy 0:2ee0bc82e7b8 144 /*
TaylorGy 0:2ee0bc82e7b8 145 **@ Function name: HP20X_IIC_WriteCmd
TaylorGy 0:2ee0bc82e7b8 146 **@ Description:
TaylorGy 0:2ee0bc82e7b8 147 **@ Input:
TaylorGy 0:2ee0bc82e7b8 148 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 149 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 150 */
TaylorGy 0:2ee0bc82e7b8 151 void HP20x_dev::HP20X_IIC_WriteCmd(uchar uCmd)
TaylorGy 0:2ee0bc82e7b8 152 {
TaylorGy 0:2ee0bc82e7b8 153 /* Port to arduino */
TaylorGy 0:2ee0bc82e7b8 154 // Wire.beginTransmission(HP20X_I2C_DEV_ID);
TaylorGy 0:2ee0bc82e7b8 155 // Wire.write(uCmd);
TaylorGy 0:2ee0bc82e7b8 156 // Wire.endTransmission();
TaylorGy 0:2ee0bc82e7b8 157 char cmd = uCmd;
TaylorGy 0:2ee0bc82e7b8 158 i2c_HP20x.write(HP20X_I2C_DEV_ID, &cmd, 1);
TaylorGy 0:2ee0bc82e7b8 159 }
TaylorGy 0:2ee0bc82e7b8 160
TaylorGy 0:2ee0bc82e7b8 161 /*
TaylorGy 0:2ee0bc82e7b8 162 **@ Function name: HP20X_IIC_ReadReg
TaylorGy 0:2ee0bc82e7b8 163 **@ Description:
TaylorGy 0:2ee0bc82e7b8 164 **@ Input:
TaylorGy 0:2ee0bc82e7b8 165 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 166 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 167 */
TaylorGy 0:2ee0bc82e7b8 168 uchar HP20x_dev::HP20X_IIC_ReadReg(uchar bReg)
TaylorGy 0:2ee0bc82e7b8 169 {
TaylorGy 0:2ee0bc82e7b8 170 /* Port to arduino */
TaylorGy 0:2ee0bc82e7b8 171 char Temp;
TaylorGy 0:2ee0bc82e7b8 172
TaylorGy 0:2ee0bc82e7b8 173 /* Send a register reading command */
TaylorGy 0:2ee0bc82e7b8 174 HP20X_IIC_WriteCmd(bReg|HP20X_RD_REG_MODE);
TaylorGy 0:2ee0bc82e7b8 175
TaylorGy 0:2ee0bc82e7b8 176 // Wire.requestFrom(HP20X_I2C_DEV_ID, 1);
TaylorGy 0:2ee0bc82e7b8 177 // while(Wire.available())
TaylorGy 0:2ee0bc82e7b8 178 // {
TaylorGy 0:2ee0bc82e7b8 179 // Temp = Wire.read();
TaylorGy 0:2ee0bc82e7b8 180 // }
TaylorGy 0:2ee0bc82e7b8 181 i2c_HP20x.read(HP20X_I2C_DEV_ID, &Temp, 1);
TaylorGy 0:2ee0bc82e7b8 182
TaylorGy 0:2ee0bc82e7b8 183 return Temp;
TaylorGy 0:2ee0bc82e7b8 184 }
TaylorGy 0:2ee0bc82e7b8 185 /*
TaylorGy 0:2ee0bc82e7b8 186 **@ Function name: HP20X_IIC_WriteReg
TaylorGy 0:2ee0bc82e7b8 187 **@ Description:
TaylorGy 0:2ee0bc82e7b8 188 **@ Input:
TaylorGy 0:2ee0bc82e7b8 189 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 190 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 191 */
TaylorGy 0:2ee0bc82e7b8 192 void HP20x_dev::HP20X_IIC_WriteReg(uchar bReg,uchar bData)
TaylorGy 0:2ee0bc82e7b8 193 {
TaylorGy 0:2ee0bc82e7b8 194 // Wire.beginTransmission(HP20X_I2C_DEV_ID);
TaylorGy 0:2ee0bc82e7b8 195 // Wire.write(bReg|HP20X_WR_REG_MODE);
TaylorGy 0:2ee0bc82e7b8 196 // Wire.write(bData);
TaylorGy 0:2ee0bc82e7b8 197 // Wire.endTransmission();
TaylorGy 0:2ee0bc82e7b8 198 char cmd[2];
TaylorGy 0:2ee0bc82e7b8 199 cmd[0] = bReg|HP20X_WR_REG_MODE;
TaylorGy 0:2ee0bc82e7b8 200 cmd[1] = bData;
TaylorGy 0:2ee0bc82e7b8 201 i2c_HP20x.write(HP20X_I2C_DEV_ID, cmd, 2);
TaylorGy 0:2ee0bc82e7b8 202 }
TaylorGy 0:2ee0bc82e7b8 203
TaylorGy 0:2ee0bc82e7b8 204
TaylorGy 0:2ee0bc82e7b8 205 /*
TaylorGy 0:2ee0bc82e7b8 206 **@ Function name: HP20X_IIC_ReadData
TaylorGy 0:2ee0bc82e7b8 207 **@ Description:
TaylorGy 0:2ee0bc82e7b8 208 **@ Input:
TaylorGy 0:2ee0bc82e7b8 209 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 210 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 211 */
TaylorGy 0:2ee0bc82e7b8 212 ulong HP20x_dev::HP20X_IIC_ReadData(void)
TaylorGy 0:2ee0bc82e7b8 213 {
TaylorGy 0:2ee0bc82e7b8 214 /* Port to arduino */
TaylorGy 0:2ee0bc82e7b8 215 ulong Temp = HP20X_IIC_ReadData3byte();
TaylorGy 0:2ee0bc82e7b8 216 return Temp;
TaylorGy 0:2ee0bc82e7b8 217 }
TaylorGy 0:2ee0bc82e7b8 218
TaylorGy 0:2ee0bc82e7b8 219 /*
TaylorGy 0:2ee0bc82e7b8 220 **@ Function name: HP20X_IIC_ReadData3byte
TaylorGy 0:2ee0bc82e7b8 221 **@ Description:
TaylorGy 0:2ee0bc82e7b8 222 **@ Input:
TaylorGy 0:2ee0bc82e7b8 223 **@ OutPut:
TaylorGy 0:2ee0bc82e7b8 224 **@ Retval:
TaylorGy 0:2ee0bc82e7b8 225 */
TaylorGy 0:2ee0bc82e7b8 226 ulong HP20x_dev::HP20X_IIC_ReadData3byte(void)
TaylorGy 0:2ee0bc82e7b8 227 {
TaylorGy 0:2ee0bc82e7b8 228 ulong TempData = 0;
TaylorGy 0:2ee0bc82e7b8 229 char tmpArray[3];
TaylorGy 0:2ee0bc82e7b8 230
TaylorGy 0:2ee0bc82e7b8 231 /* Require three bytes from slave */
TaylorGy 0:2ee0bc82e7b8 232 // Wire.requestFrom(HP20X_I2C_DEV_ID, 3);
TaylorGy 0:2ee0bc82e7b8 233
TaylorGy 0:2ee0bc82e7b8 234 // while(Wire.available()) // slave may send less than requested
TaylorGy 0:2ee0bc82e7b8 235 // {
TaylorGy 0:2ee0bc82e7b8 236 // uchar c = Wire.read(); // receive a byte as character
TaylorGy 0:2ee0bc82e7b8 237 // tmpArray[cnt] = (ulong)c;
TaylorGy 0:2ee0bc82e7b8 238 // cnt++;
TaylorGy 0:2ee0bc82e7b8 239 // }
TaylorGy 0:2ee0bc82e7b8 240 i2c_HP20x.read(HP20X_I2C_DEV_ID, tmpArray, 3);
TaylorGy 0:2ee0bc82e7b8 241
TaylorGy 0:2ee0bc82e7b8 242 /* MSB */
TaylorGy 0:2ee0bc82e7b8 243 TempData = tmpArray[0]<<16 | tmpArray[1]<<8 | tmpArray[2];
TaylorGy 0:2ee0bc82e7b8 244
TaylorGy 0:2ee0bc82e7b8 245
TaylorGy 0:2ee0bc82e7b8 246 if(TempData&0x800000)
TaylorGy 0:2ee0bc82e7b8 247 {
TaylorGy 0:2ee0bc82e7b8 248 TempData|=0xff000000;
TaylorGy 0:2ee0bc82e7b8 249 }
TaylorGy 0:2ee0bc82e7b8 250
TaylorGy 0:2ee0bc82e7b8 251 /* // 24 bit to 32 bit
TaylorGy 0:2ee0bc82e7b8 252 if(TempData&0x800000)
TaylorGy 0:2ee0bc82e7b8 253 {
TaylorGy 0:2ee0bc82e7b8 254 // 1:minus
TaylorGy 0:2ee0bc82e7b8 255 TempData |= 0x80000000;
TaylorGy 0:2ee0bc82e7b8 256 TempData &= 0xff7fffff;
TaylorGy 0:2ee0bc82e7b8 257 }
TaylorGy 0:2ee0bc82e7b8 258 else
TaylorGy 0:2ee0bc82e7b8 259 {
TaylorGy 0:2ee0bc82e7b8 260 // 0:plus
TaylorGy 0:2ee0bc82e7b8 261 //do noting
TaylorGy 0:2ee0bc82e7b8 262 } */
TaylorGy 0:2ee0bc82e7b8 263 return TempData;
TaylorGy 0:2ee0bc82e7b8 264 }
TaylorGy 0:2ee0bc82e7b8 265
TaylorGy 0:2ee0bc82e7b8 266 /**************************************END OF FILE**************************************/