int vfprintf(char *format, va_list arg)
{
int flag = 0, ret = 0;
const char *p = format;
while (*p) {
switch (*p) {
case '%':
if (flag) {
flag = 0;
put_c(*p);
ret++;
}
else {
flag = 1;
}
break;
case 'd':
if (flag) {
char buf[16];
flag = 0;
itoa(va_arg(arg, int), buf, 10);
put_s(buf);
ret += strlen(buf);
}
else {
put_c(*p);
ret++;
}
break;
case 'x':
if (flag) {
char buf[64];
flag = 0;
itoa(va_arg(arg, int), buf, 16);
put_s(buf);
ret += strlen(buf);
}
else {
put_c(*p);
ret++;
}
break;
case 'b':
if (flag) {
char buf[16];
flag = 0;
itoa(va_arg(arg, int), buf, 2);
put_s(buf);
ret += strlen(buf);
}
else {
/* swi demone */
void swi_test(int num)
{
put_s("swi : ");
print_int_hex(num);
put_c('\n');
return;
}
void uart_print( const char * fmt, ... )
{
va_list args;
int n;
va_start ( args, fmt );
n = vsprintf ( printbuffer, fmt, args );
va_end ( args );
put_s(printbuffer);
}
void LCDUI::printMenu( char *menuItems[], size_t menuLen, int top, int pos ) {
_lcd->clear();
int height = min( menuLen, ROWS );
int start = top;
int cursor = pos - start; // cursor offset from top of screen
for ( int i = 0; i < height; i++ ) {
put_s( menuItems[(start+i)%menuLen], 1, i );
}
put_c( R_ARROW, 0, cursor ); // draw cursor
}
int main()
{
char c;
int a, b;
// init_uart();
put_s("welcome use uart!\n\r");
printf("hello, world\n\r");
while (1)
{
printf("please enter two number: \n\r");
scanf("%d %d", &a, &b);
printf("\n\r");
printf("the sum is: %d\n\r", a+b);
}
return 0;
}
/* print a int in 16 mode with 0x */
void print_int_hex(int n)
{
char str_len[12];
itoa(n,str_len);
put_s(str_len);
}
/* print a char in 16 mode */
void print_char_hex(char cc)
{
char c_str[3];
ctoa(cc,c_str);
put_s(c_str);
}
/*** primul *** program ***/
void main()
{
put_s("salut");
}
void process(char* cmd){
put_s(cmd);
}
