__attribute__ ((used)) int _write (int fd, char *ptr, int len)
{
size_t i;
for (i=0; i<len;i++) {
UART_SEND_BYTE(ptr[i]); // call character output function
}
return len;
}
void uart_send_int(int str, UART_TypeDef *UART)
{
int i;
for(i=0;i<4;i++)
{
while(UART_FIFO_TX_FULL(UART) == 1);
UART_SEND_BYTE(str, UART);
str = str >> 8;
}
}
void uart_send_char(unsigned char byte, UART_TypeDef *UART)
{
while(UART_FIFO_TX_FULL(UART) == 1);
UART_SEND_BYTE(byte, UART);
}
void _ttywrch(int ch) {
UART_SEND_BYTE(ch);
}
int fgetc(FILE *f) {
return (UART_SEND_BYTE(UART_RECV_BYTE()));
}
int fputc(int ch, FILE *f) {
return (UART_SEND_BYTE(ch));
}
int getchar(void)
{
return (UART_SEND_BYTE(UART_RECV_BYTE()));
}
int putchar(int ch)
{
return (UART_SEND_BYTE(ch));
}
