Todo List

Global console_read

https://discussions.zoho.com/tlldesignbfn1/topic/return-value-for-transfers-of-data-over-uart

Global console_write

https://discussions.zoho.com/tlldesignbfn1/topic/return-value-for-transfers-of-data-over-uart

Global _isatty

check for tty

Global _open

To use mode and flags while opening the files

---