source: rtems/c/src/lib/libbsp/arm/rtl22xx/console/lpc22xx_uart.h @ d81d057

/*
 *  Definitions for LPC22xx/LPC21xx
 *
 *  $Id$
 */

#ifndef LPC22XX_UART_H
#define LPC22XX_UART_H

#define FIFODEEP    16

#define BD115200    115200
#define BD38400     38400
#define BD9600      9600

#define U0_PINSEL       (0x00000005)    /* PINSEL0 Value for UART0 */
#define U0_PINMASK      (0x0000000F)    /* PINSEL0 Mask for UART0 */
#define U1_PINSEL       (0x00050000)    /* PINSEL0 Value for UART1 */
#define U1_PINMASK      (0x000F0000)    /* PINSEL0 Mask for UART1 */

/* Uart line control register bit descriptions */
#define LCR_WORDLENTH_BIT         0
#define LCR_STOPBITSEL_BIT        2
#define LCR_PARITYENBALE_BIT      3
#define LCR_PARITYSEL_BIT         4
#define LCR_BREAKCONTROL_BIT      6
#define LCR_DLAB_BIT              7
// Line Control Register bit definitions
#define ULCR_CHAR_5         (0 << 0)    // 5-bit character length
#define ULCR_CHAR_6         (1 << 0)    // 6-bit character length
#define ULCR_CHAR_7         (2 << 0)    // 7-bit character length
#define ULCR_CHAR_8         (3 << 0)    // 8-bit character length
#define ULCR_STOP_0         (0 << 2)    // no stop bits
#define ULCR_STOP_1         (1 << 2)    // 1 stop bit
#define ULCR_PAR_NO         (0 << 3)    // No Parity
#define ULCR_PAR_ODD        (1 << 3)    // Odd Parity
#define ULCR_PAR_EVEN       (3 << 3)    // Even Parity
#define ULCR_PAR_MARK       (5 << 3)    // MARK "1" Parity
#define ULCR_PAR_SPACE      (7 << 3)    // SPACE "0" Paruty
#define ULCR_BREAK_ENABLE   (1 << 6)    // Output BREAK line condition
#define ULCR_DLAB_ENABLE    (1 << 7)    // Enable Divisor Latch Access
// Modem Control Register bit definitions
#define UMCR_DTR            (1 << 0)    // Data Terminal Ready
#define UMCR_RTS            (1 << 1)    // Request To Send
#define UMCR_LB             (1 << 4)    // Loopback

// Line Status Register bit definitions
#define ULSR_RDR            (1 << 0)    // Receive Data Ready
#define ULSR_OE             (1 << 1)    // Overrun Error
#define ULSR_PE             (1 << 2)    // Parity Error
#define ULSR_FE             (1 << 3)    // Framing Error
#define ULSR_BI             (1 << 4)    // Break Interrupt
#define ULSR_THRE           (1 << 5)    // Transmit Holding Register Empty
#define ULSR_TEMT           (1 << 6)    // Transmitter Empty
#define ULSR_RXFE           (1 << 7)    // Error in Receive FIFO
#define ULSR_ERR_MASK       0x1E

// Modem Status Register bit definitions
#define UMSR_DCTS           (1 << 0)    // Delta Clear To Send
#define UMSR_DDSR           (1 << 1)    // Delta Data Set Ready
#define UMSR_TERI           (1 << 2)    // Trailing Edge Ring Indicator
#define UMSR_DDCD           (1 << 3)    // Delta Data Carrier Detect
#define UMSR_CTS            (1 << 4)    // Clear To Send
#define UMSR_DSR            (1 << 5)    // Data Set Ready
#define UMSR_RI             (1 << 6)    // Ring Indicator
#define UMSR_DCD            (1 << 7)    // Data Carrier Detect

/* Uart Interrupt Identification */
#define IIR_RSL                   0x3
#define IIR_RDA                   0x2
#define IIR_CTI                   0x6
#define IIR_THRE                  0x1

/* Uart Interrupt Enable Type*/
#define IER_RBR                   0x1
#define IER_THRE                  0x2
#define IER_RLS                   0x4

/* Uart Receiver Errors*/
#define RC_FIFO_OVERRUN_ERR       0x1
#define RC_OVERRUN_ERR            0x2
#define RC_PARITY_ERR             0x4
#define RC_FRAMING_ERR            0x8
#define RC_BREAK_IND              0x10

typedef enum {
  UART0 = 0,
  UART1
} LPC_UartChanel_t;
#endif