//-----------------------------------------------------------------------------------
void s_printf (const char* str, ...)
{
va_list arp;
int d, r, w, s, l;
char tmp[20];
va_start(arp, str);
while ((d = *str++) != 0) {
if (d != '%') {
Uart2_PutChar(d);
continue;
}
d = *str++; w = r = s = l = 0;
if (d == '0') {
d = *str++;
s = 1;
}
while ( '0' <= d && d <= '9' ) {
w = w * 10 + (d - '0');
d = *str++;
}
if (s)
w = -w;
if (d == 'l') {
l = 1;
d = *str++;
}
if (!d)
break;
if (d == 's') {
Uart2_Print(va_arg(arp, char *));
continue;
}
if (d == 'c') {
Uart2_PutChar((char)va_arg(arp, int));
continue;
}
if (d == 'u') r = 10;
if (d == 'd') r = -10;
if (d == 'x') r = 16;
if (d == 'b') r = 2;
if (!r)
break;
if (l) {
s_itoa(tmp, (long)va_arg(arp, long), r, w);
} else {
if (r > 0)
/*******************************************************************************
* Function Name : Uart1_PutString
* Description : print a string to the uart1
* Input : buf为发送数据的地址 , len为发送字符的个数
* Output : None
* Return : None
*******************************************************************************/
void Uart2_PutString(u8* buf , u8 len)//发送一个字符串
{
u8 i;
for(i=0;i<len;i++)
{
Uart2_PutChar(*buf++);
}
}