Interfacing STM32G030F6P6TR with INA219 for current sense for 2 slaves

[Heena09]

Hi all,

I am working on Current sensing concept with the STM32G030F6P6TR and INA219 ic.

I tried all this with the STM32G030F6P6TR and INA219 module.

1. https://robu.in/product/cjmcu-219-i...ional-current-power-monitoring-sensor-module/
2. https://evelta.com/7semi-stm32g050f...GHH7koPUqg-xGXKoJI3JmXyrPku_f2XUaAiKTEALw_wcB

Its working successfully, but when i integrated the hardware it . But the I2c addresses are not detected. and i am using UART to get the address of both the IC
I am attaching my design .Let me know if any issue

 

[FvM]

Power supply scheme is wrong. You can't operate INA219 with 5V when I2C has 3.3V supply. Either need I2C level translator or should supply INA219 by 3.3 - 3.6 V.

 

[KlausST]

Hi,

when there is a functional problem ... it´s good to have the information about the modules you use.
BUT more important are the datasheets of the IC you used. Only the datsheets tell you the signal timing an levels.

Klaus

 

[Heena09]

Hi,

I will check it. if we use the 3.3 v then also it will work

 

[FvM]

if we use the 3.3 v then also it will work

Yes.

 

[Heena09]

OK

Yes.

. Ok write now we are having both designs. one where STM32 work on 3.3 & INA219-3.3 V and another one where STM32 - 3.3V and INA219-5V. I successfully done it with 3.3 for both the chip & and for the second option, we are trying to find the address of I2C. but fail in one

 

[KlausST]

we are trying to find the address of I2C. but fail in one

already answered in post#2.

Why do you repeat?

Klaus