static int _uart_getchar(FILE *stream)
{
(void) stream;
char c;
uart_stdio_read(&c, 1);
return (int)c;
}
static ssize_t uart_stdio_vfs_read(vfs_file_t *filp, void *dest, size_t nbytes)
{
int fd = filp->private_data.value;
if (fd != STDIN_FILENO) {
return -EBADF;
}
return uart_stdio_read(dest, nbytes);
}
/**
* @brief Get one character from STDIO - used by the libc
*/
int getchar(void)
{
char c;
uart_stdio_read(&c, 1);
return c;
}
/**
* @brief Read from a file
*
* All input is read from UART_0. The function will block until a byte is actually read.
*
* Note: the read function does not buffer - data will be lost if the function is not
* called fast enough.
*
* TODO: implement more sophisticated read call.
*
* @param r TODO
* @param fd TODO
* @param buffer TODO
* @param int TODO
*
* @return TODO
*/
int _read_r(struct _reent *r, int fd, void *buffer, unsigned int count)
{
(void)r;
(void)fd;
return uart_stdio_read(buffer, count);
}
