make stdin/stdout customizable stub

native/native-uart0.c

@@ -1,17 +1,20 @@
 /*
- * TODO: 
- * make stdin/stdout customizable.
+ * native uart0 implementation
  */
 
 #include <err.h>
 #include <stdio.h>
 #include <unistd.h>
+
 #include <sys/select.h>
 
 #include "cpu.h"
 #include "debug.h"
 #include "board_uart0.h"
 
+int _native_uart_in;
+int _native_uart_out;
+
 fd_set _native_uart_rfds;
 
 static inline int uart0_puts(char *astring, int length)
@@ -24,10 +27,11 @@ void _native_handle_uart0_input()
     char buf[42];
     int nread;
 
+    DEBUG("_native_handle_uart0_input\n");
     _native_in_syscall = 0;
     _native_in_isr = 1;
 
-    nread = read(0, buf, sizeof(buf));
+    nread = read(_native_uart_in, buf, sizeof(buf));
     if (nread == -1) {
         err(1, "_native_handle_uart0_input(): read()");
     }
@@ -42,13 +46,17 @@ void _native_handle_uart0_input()
 
 void _native_init_uart0()
 {
-    /* Watch stdin (fd 0) to see when it has input. */
+    _native_uart_out = STDOUT_FILENO;
+    _native_uart_in = STDIN_FILENO;
+
+    /* set fds for select in lpm */
     FD_ZERO(&_native_uart_rfds);
-    FD_SET(0, &_native_uart_rfds);
+    FD_SET(_native_uart_in, &_native_uart_rfds);
+
     puts("RIOT native uart0 initialized.");
 }
 
 int putchar(int c) {
-    write(1, &c, 1);
+    write(_native_uart_out, &c, 1);
     return 0;
 }