I used STM32F407 to communicate between EV  and EV charging station according to IEC61851, DIN 70121 

Board contain:

+ 2 CAN bus

+ ADE7913 to measure current and voltage

+ SHT10 humidity and temperature sensor

+ RS-232 communicate with HMI

+ Control relay with isolate and buffer

+ Button with isolate and buffer

+ Power supply 12V-3A