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Revision 335

Added by Diogo Miguel Ferreira Rodrigues almost 5 years ago

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uart.h
8 8 
 * @{
9 9 
 */
10 10 

  		




  
  11
  
    
/// @brief COM1 base address


  		




  11
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#define COM1_ADDR           0x3F8


  		




  
  13
  
    
/// @brief COM2 base address


  		




  12
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#define COM2_ADDR           0x2F8


  		




  
  15
  
    
/// @brief COM1 IRQ line


  		




  13
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#define COM1_IRQ            4


  		




  
  17
  
    
/// @brief COM2 IRQ line


  		




  14
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#define COM2_IRQ            3


  		




  
  19
  
    
/// @brief COM1 Vector (???)


  		




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#define COM1_VECTOR         0x0C


  		




  
  21
  
    
/// @brief COM2 Vector (???)


  		




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#define COM2_VECTOR         0x0B


  		




  17
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  24
  
    
/**


  		




  
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 * @brief Possible parity schemes for UART.


  		




  
  26
  
    
 */


  		




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typedef enum {


  		




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    uart_parity_none = 0x0,


  		




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    uart_parity_odd  = 0x1,


  		




  ......




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    uart_parity_par0 = 0x7


  		




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} uart_parity;


  		




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/**


  		




  
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 * @brief UART configuration


  		




  
  37
  
    
 */


  		




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typedef struct {


  		




  
  39
  
    
    /// @brief  Base address of the serial port this configuration was read from


  		




  27
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    int     base_addr               ;


  		




  
  41
  
    
    /// @brief  LCR (Line Control Register)


  		




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    uint8_t lcr                     ;


  		




  
  43
  
    
    /// @brief DLL (Divisor Latch Least significant byte)


  		




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    uint8_t dll                     ;


  		




  
  45
  
    
    /// @brief DLL (Divisor Latch Most significant byte)


  		




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    uint8_t dlm                     ;


  		




  
  47
  
    
    /// @brief Number of bits per char


  		




  31
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    uint8_t bits_per_char           ;


  		




  
  49
  
    
    /// @brief Number of stop bits


  		




  32
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    uint8_t stop_bits               ;


  		




  
  51
  
    
    /// @brief Parity scheme


  		




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    uart_parity parity              ;


  		




  
  53
  
    
    /// @brief Break control (???)


  		




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    uint8_t break_control         :1;


  		




  
  55
  
    
    /// @brief Divisor Latch Access Bit (1 if DLL, DLM can be accessed)


  		




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    uint8_t dlab                  :1;


  		




  
  57
  
    
    ///  @brief Divisor latch


  		




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    uint16_t divisor_latch          ;


  		




  
  59
  
    
    /// @brief IER (Interrupt Enable Register)


  		




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    uint8_t ier                     ;


  		




  
  61
  
    
    /// @brief  Receiver data interrupt enabled if 1


  		




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    uint8_t received_data_int     :1;


  		




  
  63
  
    
    /// @brief  Transmitter empty interrupt enabled if 1


  		




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    uint8_t transmitter_empty_int :1;


  		




  
  65
  
    
    /// @brief  Receiver line status register (LSR) change interrupt enabled if 1


  		




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    uint8_t receiver_line_stat_int:1;


  		




  
  67
  
    
    /// @brief  Modem status interrupt enabled if 1


  		




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    uint8_t modem_stat_int        :1;


  		




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} uart_config;


  		




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