Augustine Kizito / INA219

INA219 (Texas Instruments) High-Side Measurement,Bi-Directional CURRENT/POWER MONITOR with I2C Interface

Dependents:   Solar_Powered_Smart_Camera

Fork of INA219 by Kenji Arai

INA219.h@3:4d7fa8c64fae, 2017-02-04 (annotated)

Committer:
OHstin
Date:
Sat Feb 04 20:17:14 2017 +0000
Revision:
3:4d7fa8c64fae
Parent:
2:088b8d5de7e9 
Made changes to the way the sensor collects data

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:a3b41ab8433b 1 /*
kenjiArai 0:a3b41ab8433b 2 * mbed library program
kenjiArai 1:fea983b0385b 3 * INA219 High-Side Measurement,Bi-Directional CURRENT/POWER MONITOR with I2C Interface
kenjiArai 0:a3b41ab8433b 4 * by Texas Instruments
kenjiArai 0:a3b41ab8433b 5 *
kenjiArai 0:a3b41ab8433b 6 * Copyright (c) 2015 Kenji Arai / JH1PJL
kenjiArai 0:a3b41ab8433b 7 * http://www.page.sannet.ne.jp/kenjia/index.html
kenjiArai 0:a3b41ab8433b 8 * http://mbed.org/users/kenjiArai/
kenjiArai 0:a3b41ab8433b 9 * Created: January 25th, 2015
kenjiArai 2:088b8d5de7e9 10 * Revised: May 5th, 2015
kenjiArai 0:a3b41ab8433b 11 *
kenjiArai 0:a3b41ab8433b 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
kenjiArai 0:a3b41ab8433b 13 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
kenjiArai 0:a3b41ab8433b 14 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
kenjiArai 0:a3b41ab8433b 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kenjiArai 0:a3b41ab8433b 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
kenjiArai 0:a3b41ab8433b 17 */
kenjiArai 0:a3b41ab8433b 18 /*
kenjiArai 0:a3b41ab8433b 19 *---------------- REFERENCE ----------------------------------------------------------------------
kenjiArai 0:a3b41ab8433b 20 * Original Information
kenjiArai 0:a3b41ab8433b 21 * http://www.ti.com/product/INA219/description
kenjiArai 0:a3b41ab8433b 22 * http://www.ti.com/lit/ds/sbos448f/sbos448f.pdf
kenjiArai 0:a3b41ab8433b 23 * Device kit
kenjiArai 0:a3b41ab8433b 24 * https://learn.adafruit.com/adafruit-ina219-current-sensor-breakout/overview
kenjiArai 0:a3b41ab8433b 25 * http://akizukidenshi.com/catalog/g/gM-08221/
kenjiArai 0:a3b41ab8433b 26 */
kenjiArai 0:a3b41ab8433b 27
kenjiArai 0:a3b41ab8433b 28 #ifndef MBED_INA219
kenjiArai 0:a3b41ab8433b 29 #define MBED_INA219
kenjiArai 0:a3b41ab8433b 30
kenjiArai 0:a3b41ab8433b 31 /////////// ADDRESS /////////////////////////////
kenjiArai 0:a3b41ab8433b 32 // 7bit address = 0b1000000(0x40)
kenjiArai 0:a3b41ab8433b 33 // G=GND, V=VS+, A=SDA, L=SCL
kenjiArai 1:fea983b0385b 34 // e.g. _VG: A1=VS+, A0=GND
kenjiArai 0:a3b41ab8433b 35 // -> Please make sure your H/W configuration
kenjiArai 0:a3b41ab8433b 36 // Set data into "addr"
kenjiArai 0:a3b41ab8433b 37 #define INA219_ADDR_GG (0x40 << 1)
kenjiArai 0:a3b41ab8433b 38 #define INA219_ADDR_GV (0x41 << 1)
kenjiArai 0:a3b41ab8433b 39 #define INA219_ADDR_GA (0x42 << 1)
kenjiArai 0:a3b41ab8433b 40 #define INA219_ADDR_GL (0x43 << 1)
kenjiArai 0:a3b41ab8433b 41 #define INA219_ADDR_VG (0x44 << 1)
kenjiArai 0:a3b41ab8433b 42 #define INA219_ADDR_VV (0x45 << 1)
kenjiArai 0:a3b41ab8433b 43 #define INA219_ADDR_VA (0x46 << 1)
kenjiArai 0:a3b41ab8433b 44 #define INA219_ADDR_VL (0x47 << 1)
kenjiArai 0:a3b41ab8433b 45 #define INA219_ADDR_AG (0x48 << 1)
kenjiArai 0:a3b41ab8433b 46 #define INA219_ADDR_AV (0x49 << 1)
kenjiArai 0:a3b41ab8433b 47 #define INA219_ADDR_AA (0x4a << 1)
kenjiArai 0:a3b41ab8433b 48 #define INA219_ADDR_AL (0x4b << 1)
kenjiArai 0:a3b41ab8433b 49 #define INA219_ADDR_LG (0x4c << 1)
kenjiArai 0:a3b41ab8433b 50 #define INA219_ADDR_LV (0x4d << 1)
kenjiArai 0:a3b41ab8433b 51 #define INA219_ADDR_LA (0x4e << 1)
kenjiArai 0:a3b41ab8433b 52 #define INA219_ADDR_LL (0x4f << 1)
kenjiArai 0:a3b41ab8433b 53
kenjiArai 0:a3b41ab8433b 54 /////////// REGISTER DEFINITION /////////////////
kenjiArai 0:a3b41ab8433b 55 #define INA219_CONFIG 0x00
kenjiArai 0:a3b41ab8433b 56 #define INA219_SHUNT_V 0x01
kenjiArai 0:a3b41ab8433b 57 #define INA219_BUS_VOLT 0x02
kenjiArai 0:a3b41ab8433b 58 #define INA219_POWER 0x03
kenjiArai 0:a3b41ab8433b 59 #define INA219_CURRENT 0x04
kenjiArai 0:a3b41ab8433b 60 #define INA219_CALBLATION 0x05
kenjiArai 0:a3b41ab8433b 61
kenjiArai 0:a3b41ab8433b 62 /////////// PARAMETER SETTING ///////////////////
kenjiArai 0:a3b41ab8433b 63 // Set data into "shunt_register"
kenjiArai 0:a3b41ab8433b 64 #define INA219_PAR_R_100MOHM 100
kenjiArai 0:a3b41ab8433b 65 #define INA219_PAR_R_200MORM 200
kenjiArai 0:a3b41ab8433b 66 #define INA219_PAR_R_MORM(x) (x)
kenjiArai 0:a3b41ab8433b 67 // Set data into "v_max"
kenjiArai 0:a3b41ab8433b 68 #define INA219_PAR_V_16V 0
kenjiArai 2:088b8d5de7e9 69 #define INA219_PAR_V_32V 1 // Default
kenjiArai 0:a3b41ab8433b 70 // Set data into "gain"
kenjiArai 0:a3b41ab8433b 71 #define INA219_PAR_G_40MV 0 // 400[mA] max if R=0.1[Ohm]
kenjiArai 0:a3b41ab8433b 72 #define INA219_PAR_G_80MV 1
kenjiArai 0:a3b41ab8433b 73 #define INA219_PAR_G_160MV 2
kenjiArai 2:088b8d5de7e9 74 #define INA219_PAR_G_320MV 3 // Default
kenjiArai 2:088b8d5de7e9 75 // Set data into "bus_adc_resolution"
kenjiArai 2:088b8d5de7e9 76 #define INA219_PAR_B_9B_X1_84US 0x0
kenjiArai 2:088b8d5de7e9 77 #define INA219_PAR_B_10B_X1_148US 0x1
kenjiArai 2:088b8d5de7e9 78 #define INA219_PAR_B_11B_X1_276US 0x2
kenjiArai 2:088b8d5de7e9 79 #define INA219_PAR_B_12B_X1_532US 0x3 // Default
kenjiArai 2:088b8d5de7e9 80 #define INA219_PAR_B_12B_X2_1R06MS 0x9
kenjiArai 2:088b8d5de7e9 81 #define INA219_PAR_B_12B_X4_2R13MS 0xa
kenjiArai 2:088b8d5de7e9 82 #define INA219_PAR_B_12B_X8_4R26MS 0xb
kenjiArai 2:088b8d5de7e9 83 #define INA219_PAR_B_12B_X16_8MS 0xc
kenjiArai 2:088b8d5de7e9 84 #define INA219_PAR_B_12B_X32_17MS 0xd
kenjiArai 2:088b8d5de7e9 85 #define INA219_PAR_B_12B_X64_34MS 0xe
kenjiArai 2:088b8d5de7e9 86 #define INA219_PAR_B_12B_X128_68MS 0xf
kenjiArai 2:088b8d5de7e9 87 // Set data into "shunt_adc_resolution"
kenjiArai 0:a3b41ab8433b 88 #define INA219_PAR_S_9B_X1_84US 0x0
kenjiArai 0:a3b41ab8433b 89 #define INA219_PAR_S_10B_X1_148US 0x1
kenjiArai 0:a3b41ab8433b 90 #define INA219_PAR_S_11B_X1_276US 0x2
kenjiArai 2:088b8d5de7e9 91 #define INA219_PAR_S_12B_X1_532US 0x3 // Default
kenjiArai 0:a3b41ab8433b 92 #define INA219_PAR_S_12B_X2_1R06MS 0x9
kenjiArai 0:a3b41ab8433b 93 #define INA219_PAR_S_12B_X4_2R13MS 0xa
kenjiArai 0:a3b41ab8433b 94 #define INA219_PAR_S_12B_X8_4R26MS 0xb
kenjiArai 0:a3b41ab8433b 95 #define INA219_PAR_S_12B_X16_8MS 0xc
kenjiArai 0:a3b41ab8433b 96 #define INA219_PAR_S_12B_X32_17MS 0xd
kenjiArai 0:a3b41ab8433b 97 #define INA219_PAR_S_12B_X64_34MS 0xe
kenjiArai 0:a3b41ab8433b 98 #define INA219_PAR_S_12B_X128_68MS 0xf
kenjiArai 0:a3b41ab8433b 99 // Set data into "mode"
kenjiArai 0:a3b41ab8433b 100 #define INA219_PAR_M_PDWN 0
kenjiArai 0:a3b41ab8433b 101 #define INA219_PAR_M_SHNT_TRG 1
kenjiArai 0:a3b41ab8433b 102 #define INA219_PAR_M_BUS_TRG 2
kenjiArai 0:a3b41ab8433b 103 #define INA219_PAR_M_SHNTBUS_TRG 3
kenjiArai 0:a3b41ab8433b 104 #define INA219_PAR_M_ADC_OFF 4
kenjiArai 0:a3b41ab8433b 105 #define INA219_PAR_M_SHNT_CONT 5
kenjiArai 0:a3b41ab8433b 106 #define INA219_PAR_M_BUS_CONT 6
kenjiArai 2:088b8d5de7e9 107 #define INA219_PAR_M_SHNTBUS_CONT 7 // Default
kenjiArai 0:a3b41ab8433b 108
kenjiArai 0:a3b41ab8433b 109 ////////////// DATA TYPE DEFINITION ///////////////////////
kenjiArai 0:a3b41ab8433b 110 typedef struct {
kenjiArai 2:088b8d5de7e9 111 // I2C Address
kenjiArai 0:a3b41ab8433b 112 uint8_t addr;
kenjiArai 2:088b8d5de7e9 113 // CONFIG REG
kenjiArai 0:a3b41ab8433b 114 uint8_t shunt_register;
kenjiArai 0:a3b41ab8433b 115 uint8_t v_max;
kenjiArai 0:a3b41ab8433b 116 uint8_t gain;
kenjiArai 2:088b8d5de7e9 117 uint8_t bus_adc_resolution;
kenjiArai 2:088b8d5de7e9 118 uint8_t Shunt_adc_resolution;
kenjiArai 0:a3b41ab8433b 119 uint8_t mode;
kenjiArai 2:088b8d5de7e9 120 // CALBLATION REG
kenjiArai 0:a3b41ab8433b 121 uint16_t calibration_data;
kenjiArai 0:a3b41ab8433b 122 } INA219_TypeDef;
kenjiArai 0:a3b41ab8433b 123
kenjiArai 0:a3b41ab8433b 124 ////////////// DEFAULT SETTING ////////////////////////////
kenjiArai 0:a3b41ab8433b 125 // Standard parameter for easy set-up
kenjiArai 0:a3b41ab8433b 126 const INA219_TypeDef ina219_std_paramtr = {
kenjiArai 2:088b8d5de7e9 127 // I2C Address
kenjiArai 2:088b8d5de7e9 128 INA219_ADDR_VV,
kenjiArai 2:088b8d5de7e9 129 // CONFIG REG
kenjiArai 2:088b8d5de7e9 130 INA219_PAR_R_100MOHM, // 100 milli-ohm
kenjiArai 2:088b8d5de7e9 131 INA219_PAR_V_16V, // 16V max
OHstin 3:4d7fa8c64fae 132 /////////////// This was changed by me - Augustine Kizito////////////////
OHstin 3:4d7fa8c64fae 133 // INA219_PAR_G_40MV, // Gain x1 (40mV -> 400mA max with 100 milliOhm)
OHstin 3:4d7fa8c64fae 134 INA219_PAR_G_160MV, // Gain x1 (40mV -> 400mA max with 100 milliOhm)
kenjiArai 2:088b8d5de7e9 135 INA219_PAR_B_12B_X1_532US, // Bus/resolution 12bit & one time convertion
kenjiArai 2:088b8d5de7e9 136 INA219_PAR_S_12B_X1_532US, // Shunt/resolution 12bit & one time convertion
kenjiArai 0:a3b41ab8433b 137 INA219_PAR_M_SHNTBUS_CONT, // Measure continuously both Shunt voltage and Bus voltage
kenjiArai 2:088b8d5de7e9 138 // CALBLATION REG
kenjiArai 2:088b8d5de7e9 139 16384 // Calibration data
kenjiArai 0:a3b41ab8433b 140 };
kenjiArai 0:a3b41ab8433b 141
kenjiArai 0:a3b41ab8433b 142 /** INA219 High-Side Measurement,Bi-Directional CURRENT/POWER MONITOR with I2C Interface
kenjiArai 0:a3b41ab8433b 143 *
kenjiArai 0:a3b41ab8433b 144 * @code
kenjiArai 0:a3b41ab8433b 145 * //--------- Default setting -----------------
kenjiArai 0:a3b41ab8433b 146 * #include "mbed.h"
kenjiArai 0:a3b41ab8433b 147 * #include "INA219.h"
kenjiArai 0:a3b41ab8433b 148 *
kenjiArai 0:a3b41ab8433b 149 * // I2C Communication
kenjiArai 0:a3b41ab8433b 150 * INA219 current(dp5, dp27, INA219_ADDR_GG);
kenjiArai 0:a3b41ab8433b 151 * // If you connected I2C line not only this device but also other devices,
kenjiArai 0:a3b41ab8433b 152 * // you need to declare following method.
kenjiArai 0:a3b41ab8433b 153 * I2C i2c(dp5, dp27);
kenjiArai 0:a3b41ab8433b 154 * INA219 current(I2C& p_i2c, INA219_ADDR_GG);
kenjiArai 0:a3b41ab8433b 155 *
kenjiArai 0:a3b41ab8433b 156 * int main() {
kenjiArai 0:a3b41ab8433b 157 * while(1){
kenjiArai 0:a3b41ab8433b 158 * printf("I=%+6.3f [mA]\r\n", current.read_current());
kenjiArai 0:a3b41ab8433b 159 * wait(1.0):
kenjiArai 0:a3b41ab8433b 160 * }
kenjiArai 0:a3b41ab8433b 161 * }
kenjiArai 0:a3b41ab8433b 162 * //--------- Detail setting -----------------
kenjiArai 0:a3b41ab8433b 163 * #include "mbed.h"
kenjiArai 1:fea983b0385b 164 * #include "INA219.h"
kenjiArai 0:a3b41ab8433b 165 *
kenjiArai 0:a3b41ab8433b 166 * const INA219_TypeDef ina219_my_paramtr = {
kenjiArai 2:088b8d5de7e9 167 * // I2C Address
kenjiArai 2:088b8d5de7e9 168 * INA219_ADDR_GG,
kenjiArai 2:088b8d5de7e9 169 * // CONFIG Reg.
kenjiArai 2:088b8d5de7e9 170 * INA219_PAR_R_100MOHM, // 100 milli-ohm
kenjiArai 2:088b8d5de7e9 171 * INA219_CFG_B16V, // 16V max
kenjiArai 2:088b8d5de7e9 172 * INA219_PAR_G_40MV, // Gain x1
kenjiArai 2:088b8d5de7e9 173 * INA219_PAR_M_SHNTBUS_CONT,// Measure continuously
kenjiArai 2:088b8d5de7e9 174 * // CALIB
kenjiArai 2:088b8d5de7e9 175 * 16384 // Calibration data is nothing
kenjiArai 0:a3b41ab8433b 176 * };
kenjiArai 0:a3b41ab8433b 177 *
kenjiArai 0:a3b41ab8433b 178 * I2C i2c(dp5,dp27);
kenjiArai 0:a3b41ab8433b 179 * INA219 current(I2C& p_i2c, &ina219_my_paramtr);
kenjiArai 0:a3b41ab8433b 180 *
kenjiArai 0:a3b41ab8433b 181 * int main() {
kenjiArai 0:a3b41ab8433b 182 * while(1){
kenjiArai 0:a3b41ab8433b 183 * printf("I=%+6.3f [mA]\r\n", current.read_current());
kenjiArai 0:a3b41ab8433b 184 * wait(1.0):
kenjiArai 0:a3b41ab8433b 185 * }
kenjiArai 0:a3b41ab8433b 186 * }
kenjiArai 0:a3b41ab8433b 187 * @endcode
kenjiArai 0:a3b41ab8433b 188 */
kenjiArai 0:a3b41ab8433b 189
kenjiArai 0:a3b41ab8433b 190 class INA219
kenjiArai 0:a3b41ab8433b 191 {
kenjiArai 0:a3b41ab8433b 192 public:
kenjiArai 0:a3b41ab8433b 193 /** Configure data pin
kenjiArai 0:a3b41ab8433b 194 * @param data SDA and SCL pins
kenjiArai 0:a3b41ab8433b 195 * @param parameter address chip (INA219_TypeDef)
kenjiArai 0:a3b41ab8433b 196 * @param or just set address or just port
kenjiArai 0:a3b41ab8433b 197 */
kenjiArai 0:a3b41ab8433b 198 INA219(PinName p_sda, PinName p_scl, const INA219_TypeDef *ina219_parameter);
kenjiArai 0:a3b41ab8433b 199 INA219(PinName p_sda, PinName p_scl, uint8_t addr);
kenjiArai 0:a3b41ab8433b 200 INA219(PinName p_sda, PinName p_scl);
kenjiArai 0:a3b41ab8433b 201
kenjiArai 0:a3b41ab8433b 202 /** Configure data pin (with other devices on I2C line)
kenjiArai 0:a3b41ab8433b 203 * @param I2C previous definition
kenjiArai 0:a3b41ab8433b 204 * @param parameter address chip (INA219_TypeDef)
kenjiArai 0:a3b41ab8433b 205 * @param or just set address or just port
kenjiArai 0:a3b41ab8433b 206 */
kenjiArai 0:a3b41ab8433b 207 INA219(I2C& p_i2c, const INA219_TypeDef *ina219_parameter);
kenjiArai 0:a3b41ab8433b 208 INA219(I2C& p_i2c, uint8_t addr);
kenjiArai 0:a3b41ab8433b 209 INA219(I2C& p_i2c);
kenjiArai 0:a3b41ab8433b 210
kenjiArai 0:a3b41ab8433b 211 /** Read Current data
kenjiArai 0:a3b41ab8433b 212 * @param none
kenjiArai 0:a3b41ab8433b 213 * @return current [mA]
kenjiArai 0:a3b41ab8433b 214 */
kenjiArai 0:a3b41ab8433b 215 float read_current(void);
kenjiArai 0:a3b41ab8433b 216 float read_current_by_shuntvolt(void);
kenjiArai 0:a3b41ab8433b 217
kenjiArai 0:a3b41ab8433b 218 /** Read Power data
kenjiArai 0:a3b41ab8433b 219 * @param none
kenjiArai 0:a3b41ab8433b 220 * @return power [w]
kenjiArai 0:a3b41ab8433b 221 */
kenjiArai 0:a3b41ab8433b 222 float read_power(void);
kenjiArai 0:a3b41ab8433b 223
kenjiArai 0:a3b41ab8433b 224 /** Read Bus voltage
kenjiArai 0:a3b41ab8433b 225 * @param none
kenjiArai 0:a3b41ab8433b 226 * @return voltage [v]
kenjiArai 0:a3b41ab8433b 227 */
kenjiArai 0:a3b41ab8433b 228 float read_bus_voltage(void);
kenjiArai 0:a3b41ab8433b 229
kenjiArai 0:a3b41ab8433b 230 /** Read Shunt voltage data
kenjiArai 0:a3b41ab8433b 231 * @param none
kenjiArai 0:a3b41ab8433b 232 * @return voltage [v]
kenjiArai 0:a3b41ab8433b 233 */
kenjiArai 0:a3b41ab8433b 234 float read_shunt_voltage(void);
kenjiArai 0:a3b41ab8433b 235
kenjiArai 0:a3b41ab8433b 236 /** Read configration reg.
kenjiArai 0:a3b41ab8433b 237 * @param none
kenjiArai 0:a3b41ab8433b 238 * @return configrartion register value
kenjiArai 0:a3b41ab8433b 239 */
kenjiArai 0:a3b41ab8433b 240 uint16_t read_config(void);
kenjiArai 0:a3b41ab8433b 241
kenjiArai 0:a3b41ab8433b 242 /** Set configration reg.
kenjiArai 0:a3b41ab8433b 243 * @param
kenjiArai 0:a3b41ab8433b 244 * @return configrartion register value
kenjiArai 0:a3b41ab8433b 245 */
kenjiArai 0:a3b41ab8433b 246 uint16_t set_config(uint16_t cfg);
kenjiArai 0:a3b41ab8433b 247
kenjiArai 0:a3b41ab8433b 248 /** Read calibration reg.
kenjiArai 0:a3b41ab8433b 249 * @param none
kenjiArai 0:a3b41ab8433b 250 * @return calibration register value
kenjiArai 0:a3b41ab8433b 251 */
kenjiArai 0:a3b41ab8433b 252 uint16_t read_calb(void);
kenjiArai 0:a3b41ab8433b 253
kenjiArai 0:a3b41ab8433b 254 /** Set calibration reg.
kenjiArai 0:a3b41ab8433b 255 * @param
kenjiArai 0:a3b41ab8433b 256 * @return calibration register value
kenjiArai 0:a3b41ab8433b 257 */
kenjiArai 0:a3b41ab8433b 258 uint16_t set_calb(uint16_t clb);
kenjiArai 0:a3b41ab8433b 259
kenjiArai 0:a3b41ab8433b 260 /** Set I2C clock frequency
kenjiArai 0:a3b41ab8433b 261 * @param freq.
kenjiArai 0:a3b41ab8433b 262 * @return none
kenjiArai 0:a3b41ab8433b 263 */
kenjiArai 0:a3b41ab8433b 264 void frequency(int hz);
kenjiArai 0:a3b41ab8433b 265
kenjiArai 0:a3b41ab8433b 266 /** Read register (general purpose)
kenjiArai 0:a3b41ab8433b 267 * @param register's address
kenjiArai 0:a3b41ab8433b 268 * @return register data
kenjiArai 0:a3b41ab8433b 269 */
kenjiArai 0:a3b41ab8433b 270 uint8_t read_reg(uint8_t addr);
kenjiArai 0:a3b41ab8433b 271
kenjiArai 0:a3b41ab8433b 272 /** Write register (general purpose)
kenjiArai 0:a3b41ab8433b 273 * @param register's address
kenjiArai 0:a3b41ab8433b 274 * @param data
kenjiArai 0:a3b41ab8433b 275 * @return register data
kenjiArai 0:a3b41ab8433b 276 */
kenjiArai 0:a3b41ab8433b 277 uint8_t write_reg(uint8_t addr, uint8_t data);
kenjiArai 0:a3b41ab8433b 278
kenjiArai 0:a3b41ab8433b 279 protected:
kenjiArai 0:a3b41ab8433b 280 I2C _i2c;
kenjiArai 0:a3b41ab8433b 281
kenjiArai 0:a3b41ab8433b 282 void initialize(void);
kenjiArai 0:a3b41ab8433b 283
kenjiArai 0:a3b41ab8433b 284 private:
kenjiArai 0:a3b41ab8433b 285 INA219_TypeDef ina219_set_data;
kenjiArai 0:a3b41ab8433b 286 int32_t scale_factor;
kenjiArai 0:a3b41ab8433b 287 uint8_t dt[4];
kenjiArai 0:a3b41ab8433b 288
kenjiArai 0:a3b41ab8433b 289 };
kenjiArai 0:a3b41ab8433b 290
kenjiArai 1:fea983b0385b 291 //-------------------------------------------------------------------------------------------------
kenjiArai 2:088b8d5de7e9 292 // Following parts are only internal use and you only use it if you manage an internal config reg.
kenjiArai 1:fea983b0385b 293 //-------------------------------------------------------------------------------------------------
kenjiArai 1:fea983b0385b 294 /////////// BIT DEFINITION ////////////////////////////////
kenjiArai 1:fea983b0385b 295 #define INA219_CFG_RESET (1UL << 15)
kenjiArai 1:fea983b0385b 296
kenjiArai 1:fea983b0385b 297 #define INA219_CFG_B32V (1UL << 13)
kenjiArai 1:fea983b0385b 298 #define INA219_CFG_B16V (0UL << 13)
kenjiArai 1:fea983b0385b 299
kenjiArai 1:fea983b0385b 300 #define INA219_CFG_PGA_DIV_1 (0UL << 11)
kenjiArai 1:fea983b0385b 301 #define INA219_CFG_PGA_DIV_2 (1UL << 11)
kenjiArai 1:fea983b0385b 302 #define INA219_CFG_PGA_DIV_4 (2UL << 11)
kenjiArai 1:fea983b0385b 303 #define INA219_CFG_PGA_DIV_8 (3UL << 11)
kenjiArai 1:fea983b0385b 304
kenjiArai 1:fea983b0385b 305 #define INA219_CFG_BADC (0xf << 7)
kenjiArai 1:fea983b0385b 306
kenjiArai 1:fea983b0385b 307 #define INA219_CFG_SADC_9B_84U (0x0 << 3)
kenjiArai 1:fea983b0385b 308 #define INA219_CFG_SADC_10B_148U (0x1 << 3)
kenjiArai 1:fea983b0385b 309 #define INA219_CFG_SADC_11B_276U (0x2 << 3)
kenjiArai 1:fea983b0385b 310 #define INA219_CFG_SADC_12B_532U (0x3 << 3)
kenjiArai 1:fea983b0385b 311 #define INA219_CFG_SADC_2S_1R06M (0x9 << 3)
kenjiArai 1:fea983b0385b 312 #define INA219_CFG_SADC_4S_2R13M (0xa << 3)
kenjiArai 1:fea983b0385b 313 #define INA219_CFG_SADC_8S_4R26M (0xb << 3)
kenjiArai 1:fea983b0385b 314 #define INA219_CFG_SADC_16S_8R51M (0xc << 3)
kenjiArai 1:fea983b0385b 315 #define INA219_CFG_SADC_32S_17M (0xd << 3)
kenjiArai 1:fea983b0385b 316 #define INA219_CFG_SADC_64S_34M (0xe << 3)
kenjiArai 1:fea983b0385b 317 #define INA219_CFG_SADC_128S_68M (0xf << 3)
kenjiArai 1:fea983b0385b 318
kenjiArai 1:fea983b0385b 319 #define INA219_CFG_MODE_PDWN (0UL << 0)
kenjiArai 1:fea983b0385b 320 #define INA219_CFG_MODE_SHNTTRG (1UL << 0)
kenjiArai 1:fea983b0385b 321 #define INA219_CFG_MODE_BUSTRG (2UL << 0)
kenjiArai 1:fea983b0385b 322 #define INA219_CFG_MODE_SBTRG (3UL << 0)
kenjiArai 1:fea983b0385b 323 #define INA219_CFG_MODE_ADC_OFF (4UL << 0)
kenjiArai 1:fea983b0385b 324 #define INA219_CFG_MODE_SHNT_CONT (5UL << 0)
kenjiArai 1:fea983b0385b 325 #define INA219_CFG_MODE_BUS_CONT (6UL << 0)
kenjiArai 1:fea983b0385b 326 #define INA219_CFG_MODE_SB_CONT (7UL << 0)
kenjiArai 1:fea983b0385b 327
kenjiArai 0:a3b41ab8433b 328 #endif // MBED_INA219