Part Number: MSP430F67791
Tool/software:
To give some context to my project:
- I'm using the EMDC library GUI to generate a code to read Current Transformer (CT) Irms.. I do not have the Development Kits mentioned in the user guide. I only have my custom PCB with MSP430F67791 and the programmer to flash code onto it.
- The library consists of the kit EVM430-F6736 which has an HMI display (which I presume is to display the readings). Now since I do not have the kit, I have to read the raw Irms ADC values from the code.
The raw IRMS value I think always comes half of what I'm seeing with my Multimeter. For e.g. (check attached screenshot), the multimeter reading is 9.2A and raw is 4795. This value is responsive, I mean it goes to near-zero when I turn off the load, and it rises with load.
Now I want to get a better understanding of this Raw ADC value to use on my project. I can't seem to understand how this EMDC library is calculating the end result for IRMS which is being sent to the HMI which I don't have access to. Are the raw values being sent to the HMI as is or is there some conversion happening in-between? How can I extract the Irms to send to my MCU ESP32?
Thanks,
Kaushal
