Tomislav Šoić
Basic INA219, with set calibaration and functions for reading raw register and write to register
INA219.h@3:fc2a11f942fd, 2015-11-30 (annotated)
- Committer:
- tsoic
- Date:
- Mon Nov 30 07:17:53 2015 +0000
- Revision:
- 3:fc2a11f942fd
- Parent:
- 2:94ed6c056d01
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| tsoic | 2:94ed6c056d01 | 1 | |
| tsoic | 2:94ed6c056d01 | 2 | #ifndef INA219_H |
| tsoic | 2:94ed6c056d01 | 3 | #define INA219_H |
| tsoic | 1:6b9f92e99dd7 | 4 | /** Simplified INA219 class, fork of https://developer.mbed.org/users/mazgch/code/INA219/ from Michael Ammann . |
| tsoic | 1:6b9f92e99dd7 | 5 | * This class is using I2CR class https://developer.mbed.org/users/ShockSoc/code/I2CR/ which is set to pins p9 (SDA) and p10 (SCL) |
| tsoic | 1:6b9f92e99dd7 | 6 | * |
| tsoic | 1:6b9f92e99dd7 | 7 | * Example: |
| tsoic | 1:6b9f92e99dd7 | 8 | * @code |
| tsoic | 1:6b9f92e99dd7 | 9 | * #include "mbed.h" |
| tsoic | 1:6b9f92e99dd7 | 10 | * #include "INA219.h" |
| tsoic | 1:6b9f92e99dd7 | 11 | * #include "INA219_reg.h" |
| tsoic | 1:6b9f92e99dd7 | 12 | * |
| tsoic | 1:6b9f92e99dd7 | 13 | * INA219 ina(); |
| tsoic | 1:6b9f92e99dd7 | 14 | * float rawValue; |
| tsoic | 1:6b9f92e99dd7 | 15 | * |
| tsoic | 1:6b9f92e99dd7 | 16 | * int main() { |
| tsoic | 1:6b9f92e99dd7 | 17 | * rawValue = ina.readRawReg(INA219_POWER); |
| tsoic | 1:6b9f92e99dd7 | 18 | * } |
| tsoic | 1:6b9f92e99dd7 | 19 | * @endcode |
| tsoic | 1:6b9f92e99dd7 | 20 | |
| tsoic | 1:6b9f92e99dd7 | 21 | */ |
| tsoic | 0:cdfbda214bee | 22 | #include "mbed.h" |
| tsoic | 0:cdfbda214bee | 23 | #include "I2CR.h" |
| tsoic | 0:cdfbda214bee | 24 | |
| tsoic | 1:6b9f92e99dd7 | 25 | class INA219 |
| tsoic | 1:6b9f92e99dd7 | 26 | { |
| tsoic | 1:6b9f92e99dd7 | 27 | public: |
| tsoic | 3:fc2a11f942fd | 28 | /** |
| tsoic | 3:fc2a11f942fd | 29 | * Calling the INA219 calibrates the sensor registers |
| tsoic | 3:fc2a11f942fd | 30 | */ |
| tsoic | 0:cdfbda214bee | 31 | INA219(); |
| tsoic | 1:6b9f92e99dd7 | 32 | /** Read raw value from register |
| tsoic | 1:6b9f92e99dd7 | 33 | * @param reg adress of register definicions in INA219_reg.h |
| tsoic | 1:6b9f92e99dd7 | 34 | * @returns raw float value |
| tsoic | 1:6b9f92e99dd7 | 35 | */ |
| tsoic | 1:6b9f92e99dd7 | 36 | |
| tsoic | 1:6b9f92e99dd7 | 37 | uint16_t readRawReg(uint8_t reg); |
| tsoic | 1:6b9f92e99dd7 | 38 | |
| tsoic | 1:6b9f92e99dd7 | 39 | /** |
| tsoic | 1:6b9f92e99dd7 | 40 | * Read raw value from register |
| tsoic | 1:6b9f92e99dd7 | 41 | * @param reg adress of register defined in INA219_reg.h |
| tsoic | 1:6b9f92e99dd7 | 42 | * @param data data that you want to sent |
| tsoic | 1:6b9f92e99dd7 | 43 | */ |
| tsoic | 1:6b9f92e99dd7 | 44 | void write_reg(uint8_t reg, uint8_t data); |
| tsoic | 1:6b9f92e99dd7 | 45 | |
| tsoic | 1:6b9f92e99dd7 | 46 | private: |
| tsoic | 1:6b9f92e99dd7 | 47 | |
| tsoic | 0:cdfbda214bee | 48 | I2CR i2cr; |
| tsoic | 1:6b9f92e99dd7 | 49 | |
| tsoic | 0:cdfbda214bee | 50 | uint8_t dt[4]; |
| tsoic | 1:6b9f92e99dd7 | 51 | /** |
| tsoic | 1:6b9f92e99dd7 | 52 | * Should be public with changable calibration values. |
| tsoic | 1:6b9f92e99dd7 | 53 | * Calibration settings set to : |
| tsoic | 1:6b9f92e99dd7 | 54 | * A0 i A1 to GND (adress for I2C communication 0x40) |
| tsoic | 1:6b9f92e99dd7 | 55 | * - 320 mv range |
| tsoic | 1:6b9f92e99dd7 | 56 | * - 16 V bus voltage |
| tsoic | 1:6b9f92e99dd7 | 57 | * - 12 bit 128 samples current and bus voltage ADC resolution |
| tsoic | 1:6b9f92e99dd7 | 58 | * - Shunt and bus voltage conntinious |
| tsoic | 1:6b9f92e99dd7 | 59 | * - Calibration : 5400 |
| tsoic | 1:6b9f92e99dd7 | 60 | */ |
| tsoic | 1:6b9f92e99dd7 | 61 | void calibration(); |
| tsoic | 0:cdfbda214bee | 62 | }; |
| tsoic | 0:cdfbda214bee | 63 | |
| tsoic | 1:6b9f92e99dd7 | 64 | #endif |