serial.c

此文档为采用FPGA实现的以太网MAC层

#include "serial.h"



/////////////////////////////////////////

void dbg_init(void)
{
    //Init debug port
    DBG_SCON = 0x50; //Enable reception and set mode
    DBG_SRELL = 0xF2;         //56k baud rate
    DBG_SRELH = 0x3;
    DBG_ADCON = 0x80;
    DBG_PCON = 0x00;

    DBG_SBUF = 0xfe;
}

void dbg_char(Uint8 data)
{
    //Reset TXI flag
    DBG_SCON &= ~(0x2);
    DBG_SBUF = data;

    //dbg_busy();
    while (1)
    {
       if (DBG_TXI != 0) break;
    }


}




void dbg_string(Uint16 *buf,Uint16 len)
{
    unsigned int i;

    for (i=0;i<len;i++)
    {
       dbg(buf[i]);
    }
}

void dbg(Uint16 data)
{
    dbg_char((Uint8) (data >> 8));
    dbg_char((Uint8) (data & 0xff));
}

void dbg32(Uint32 data)
{
    //dbg((Uint16) (data >> 16));
    //bg((Uint16) (data & 0xffff));
    dbg_string((Uint16 *) &data,2);

}