一个LCD的程序，哪位帮忙看看解决办法

int  main(void){            // 初始化I/O     uint16 chr,str[100],color;    uint8 fs,i = 0;        int coor;        rGPHCON = (rGPHCON & (~(0x03<<20))) | (0x01<<20);   // rGPHCON[21:20] = 01b，设置GPH10为GPIO输出模式                  UART_Select(0);     // 选择UART0    UART_Init();        // 初始化UART0        RTC_Init(0);    // 初始化RTC        GUI_Initialize();//初始化LCD        RunBeep();            UART_SendStr("请选择滚动方式，0为横向滚动，1为纵向滚动\n");    chr = UART_GetKey();    if(chr == 0)    {        fs = 1;        coor = WIDTH;    }    else    {        fs = 0;        coor = HIGN;    }//格式控制，fs为0时横向滚动,fs为1时纵向滚动        UART_SendStr("请选择文字颜色: \n0 黑色\n1 深蓝色\n2 深绿色\n3 深青色\n4 深红色:\n5 紫色\n6 橄榄绿\n7 灰白色\n8 深灰色\n9 蓝色\n10 绿色\n11 青色\n12 红色\n13 品红\n14 黄色\n15 白色");    chr = UART_GetKey();    color = COLORS_TAB[chr];//选择颜色    while(str[i-1] != 0x0D)    {        str[i] = UART_GetKey(); //获得串口数据        i++;    }        str[i] = ' ';    str[i++] = '2';    str[i++] = '0';    str[i++] = g_year/10;    str[i++] = g_year%10;    str[i++] = '-';            str[i++] = g_month/10;    str[i++] = g_month%10;     str[i++] = '-';         str[i++] = g_day/10;    str[i++] = g_day%10;     str[i++] = ' ';         str[i++] = g_hour/10;    str[i++] = g_hour%10;     str[i++] = ':';         str[i++] = g_min/10;    str[i++] = g_min%10;     str[i++] = ':';    str[i++] = g_sec/10;    str[i++] = g_sec%10;     str[i]   = '\0';//加入rtc            while(1)    {                            ShowChar(str,fs,coor,color);//显示串口获得的数据，这里有问题！，可以正常执行但是就是显示不出东西        TFT_FillSCR(GUI_CCOLOR);//清屏                  coor-=GUNDONG;                if(coor == -(16 * i) && fs == 0) coor = WIDTH;        if(coor == -(16 * i) && fs == 1) coor = HIGN;//滚动结束，重新开始        DelayNS(10);    }               return(0);}

void ShowChar(uint16 *p,uint8 fs,uint16 i,uint8 color){    if(fs == 0)    {               Lcd_DspAscII8x16(i,0,color,p);    }    else    {          Lcd_DspAscII8x16(0,i,color,p);    }}

void Lcd_DspAscII8x16(uint16 x0, uint16 y0, uint8 ForeColor, uint8 * s){    int16 i,j,k,x,y,xx;    uint8 qm;    uint32 ulOffset;    int8 ywbuf[16],temp[2];        for( i = 0; i < strlen((const char*)s); i++ )    {        if( (uint8)*(s+i) >= 161 )        {            temp[0] = *(s + i);            temp[1] = '\0';            return;        }        else        {            qm = *(s+i);            ulOffset = (uint32)(qm) * 16;        //Here to be changed tomorrow            for( j = 0; j < 16; j ++ )            {                ywbuf[j] = g_auc_Ascii8x16[ulOffset + j];            }            for( y = 0; y < 16; y++ )            {                for( x = 0; x < 8; x++ )                    {                    k = x % 8;                    if( ywbuf[y]  & (0x80 >> k) )                       {                           xx = x0 + x + i*8;                           GUI_Point(xx, y + y0, (uint8)ForeColor);                       }                   }            }        }    }}