INA229_239EVM: Is an SCB needed to control the INA239EVM?

Hello Anh,

The SCB is only needed if you want to test the EVM with the provided GUI and firmware for evaluation. You do not need the SCB if you have another MCU (such as the Raspberry Pi), and plan to use your own firmware.  

On that note, if you plan to use the Raspberry Pi and do your own firmware, then you may be interested in our SysConfig tool, which can help you generate configuration code for the INA239. It also has convenient functions for communicating with the device. Here is a link to that tool with the INA239 already added to the project: https://dev.ti.com/sysconfig/index.html?product=ascstudio&module=/ti/sensors/currentsensor/INA239.