uart.h

代码有点长,需细心阅读,仅供影音视听类产品的开发人员参考

#ifdef SUPPORT_EPP_DBG
#define UART_SOFTRESET  (1<<7)

#define UART_9600       64
#define UART_19200  32
#define UART_38400  15
#define UART_57600  10
#define UART_115200 4

#define UART_5bits      (0)
#define UART_6bits      (1)
#define UART_7bits      (2)
#define UART_8bits      (3)

#define UART_ONESTOPBIT (0<<2)
#define UART_TWOSTOPBIT (1<<2)

#define UART_ENABLEPARITY     (1<<3)
#define UART_DISABLEPARITY    (0<<3)

#define UART_EVENPARITY       (1<<4)
#define UART_ODDPARITY        (1<<4)

#define UART_VOTESEL0         (0<<6)
#define UART_VOTESEL3         (1<<6)
#define UART_VOTESEL5         (2<<6)
#define UART_VOTESEL7         (3<<6)

#define UART_AUTO_RTS         (1<<5)
#define UART_AUTO_CTS         (1<<6)

#define UART_DATA    (regs0->uart0_data)
#define UART_LSR     (regs0->uart0_lsr)
#define UART_MSR     (regs0->uart0_msr)
#define UART_LCR     (regs0->uart0_lcr)
#define UART_MCR     (regs0->uart0_mcr)
#define UART_DIV_L   (regs0->uart0_div_l)
#define UART_DIV_H   (regs0->uart0_div_h)
#define UART_ISC     (regs0->uart0_isc)

#define IsUARTCmdTxFull()         (!(UART_LSR & 0x01))
#define IsUARTCmdRxEmpty()        (!(UART_LSR & 0x02))
#define IsUARTCmdParityError()    (UART_LSR & 0x04)

#define UART0_tx_rdy()      (regs0->uart0_lsr & (1<<0))
#define UART0_rx_rdy()      (regs0->uart0_lsr & (1<<1))
#define UART0_tx_empty()    (regs0->uart0_lsr & (1<<6))

#define UART1_tx_rdy()      (regs0->uart1_lsr & (1<<0))
#define UART1_rx_rdy()      (regs0->uart1_lsr & (1<<1))
#define UART1_tx_empty()    (regs0->uart1_lsr & (1<<6))

BYTE    uart_rp;
BYTE    uart_wp;

//JJDing 2002/08/28
#define  FIFOS       0xff
//char     uart_buf[FIFOS+1];

#endif