New simple UART0 library.
Updated uVision project files
Starting ring buffer implementation (untested)
Added ring buffer library
Use ringbuffer in UART0 library (compile ok, use untested)
Starting to use ringbuffer. sendByte and getByte done.
New buffer count fonctions (used and free)
Bug fixes
Fix IT vectors
Bug fixes
UART0 tests ok
Uart0 now use FreeRTOS queues to handle Tx and Rx data.
Library tested.
Ignore temporary files