UART

• UartInit(baudRate) - Sets the baud rate UART
  baudRate: Any commonly used standard baud rate

• UartRead() - Read UART data
  Returns: A byte read from UART

• UartWrite(data) - Write UART data
  data: Data byte to send on UART

• UartCount() - Count
  Returns: How many bytes have been buffered and ready to be read

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