seed_dvs6446_uart.h

来自「TI的DM6446的硬件平台搭建的相关例子」· C头文件 代码 · 共 48 行

#include "davincievm.h"
/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  UART regs                                                               *
 *                                                                          *
 * ------------------------------------------------------------------------ */
typedef struct {
    volatile Uint32 RBR;
    volatile Uint32 IER;
    volatile Uint32 IIR;
    volatile Uint32 LCR;
    volatile Uint32 MCR;
    volatile Uint32 LSR;
    Uint32 rsvd_18;
    Uint32 rsvd_1c;
    volatile Uint32 DLL;
    volatile Uint32 DLH;
    volatile Uint32 PID1;
    volatile Uint32 PID2;
    volatile Uint32 PWREMU_MGMT;
} UART_REGS;

#define THR     RBR    // THR & RBR occupy the same memory location
#define FCR     IIR    // FCR & IIR occupy the same memory location

typedef struct {
    UART_REGS* regs;
} UART_OBJ;
static Uint8 rx[256];
static Uint8 tx[256];
static UART_OBJ UART_MODULE_0 = { ( UART_REGS* )UART0_BASE };
static UART_OBJ UART_MODULE_1 = { ( UART_REGS* )UART1_BASE };

typedef UART_OBJ* UART_HANDLE;

/* ------------------------------------------------------------------------ *
 *  Prototypes                                                              *
 * ------------------------------------------------------------------------ */
UART_HANDLE DVS6446_UART_open( Uint16 id, Uint32 baudrate );
Int16       DVS6446_UART_close( UART_HANDLE UartHandle );

Int16 DVS6446_UART_xmtReady( UART_HANDLE UartHandle );
Int16 DVS6446_UART_rcvReady( UART_HANDLE UartHandle );

Int16 DVS6446_UART_putChar( UART_HANDLE UartHandle, Uint8 data );
Int16 DVS6446_UART_getChar( UART_HANDLE UartHandle, Uint8* data );