FreeRTOS with serial COM MC9S08DZ60

Hello, I would like to use FreeRTOS with a MC9S08DZ60. I’ve already find some project for S08 but it never works with this microcontroller. I’ve tried for more than 2 weeks to make it works but there’s always some problems
Does someone has a project for DZ60 that works and use the serial ports ? Thank you very much for your help Best regards