/**
* _read and _write for LM4F
*
* _read and _write are used by newlib's I/O routines (think printf, etc.)
* If you want to use this code in your binary, you will have to initialise
* the UART in your board's setup code and define STD_CON to your UART's
* name in your board's Makefile
*/
int _read(int fd, void *buf, size_t count)
{
int rcvd;
char *ptr;
if(fd <= 2){
ptr = (char *) buf;
rcvd = 0;
while(count > 0){
*ptr = uart_recv_blocking(STD_CON);
if(*ptr == '\r'){
*ptr = '\n';
}
++rcvd;
--count;
}
}else{
rcvd = -1;
errno = EIO;
}
return rcvd;
}
int main(void)
{
u8 rx;
uart_setup();
/*
* Yes, it's that simple !
*/
while(1) {
rx = uart_recv_blocking(UART0);
uart_send_blocking(UART0, rx);
}
return 0;
}
int main(void)
{
uint8_t rx;
gpio_enable_ahb_aperture();
uart_setup();
/*
* Yes, it's that simple !
*/
while(1) {
rx = uart_recv_blocking(UART0);
uart_send_blocking(UART0, rx);
}
return 0;
}
