How to convert sensor SPI/I2C output to serial (RS-232)? [closed]

I have a home automation project which requires me to connect small, temperature/GPS sensor boards (normally used in Arduino/Pico project and output to SPI/I2C) to an industrial controller which uses serial (RS-232) communications. Any suggestions on how to get from SPI/I2C to RS-232?
Thanks,
NuevoZeeland