The INA219 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses.The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current.This chip can be used in servers,telecom equipment,notebook computers,power management,battery chargers,welding equipment,power supplies,test equipment and so on.
LibDriver INA219 is the full function driver of INA219 launched by LibDriver.It provides continuous mode reading, single mode reading, current acquisition, voltage acquisition and power acquisition.
/src includes LibDriver INA219 source files.
/interface includes LibDriver INA219 IIC platform independent template。
/test includes LibDriver INA219 driver test code and this code can test the chip necessary function simply。
/example includes LibDriver INA219 sample code.
/doc includes LibDriver INA219 offline document.
/datasheet includes INA219 datasheet。
/project includes the common Linux and MCU development board sample code. All projects use the shell script to debug the driver and the detail instruction can be found in each project's README.md.
Reference /interface IIC platform independent template and finish your platform IIC driver.
Add /src, /interface and /example to your project.
uint8_t res;
res = ina219_basic_init(INA219_ADDRESS_0, 0.1);
if (res)
{
return 1;
}
...
for (i = 0; i < times; i++)
{
float mV;
float mA;
float mW;
res = ina219_basic_read(&mV, &mA, &mW);
if (res)
{
ina219_basic_deinit();
return 1;
}
ina219_interface_debug_print("ina219: %d/%d.\n", i + 1, times);
ina219_interface_debug_print("ina219: bus voltage is %0.3fmV.\n", mV);
ina219_interface_debug_print("ina219: current is %0.3fmA.\n", mA);
ina219_interface_debug_print("ina219: power is %0.3fmW.\n", mW);
ina219_interface_delay_ms(1000);
...
}
...
ina219_basic_deinit();
return 0;uint8_t res;
res = ina219_shot_init(INA219_ADDRESS_0, 0.1);
if (res)
{
return 1;
}
...
for (i = 0; i < times; i++)
{
float mV;
float mA;
float mW;
res = ina219_shot_read(&mV, &mA, &mW);
if (res)
{
ina219_shot_deinit();
return 1;
}
ina219_interface_debug_print("ina219: %d/%d.\n", i + 1, times);
ina219_interface_debug_print("ina219: bus voltage is %0.3fmV.\n", mV);
ina219_interface_debug_print("ina219: current is %0.3fmA.\n", mA);
ina219_interface_debug_print("ina219: power is %0.3fmW.\n", mW);
ina219_interface_delay_ms(1000);
...
}
...
ina219_shot_deinit();
return 0;Online documents: https://www.libdriver.com/docs/ina219/index.html
Offline documents: /doc/html/index.html
Please sent an e-mail to lishifenging@outlook.com
Copyright (c) 2015 - present LibDriver All rights reserved
The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Please sent an e-mail to lishifenging@outlook.com