native cc110x_ng support

native/drivers/native-uart0.c

@@ -27,6 +27,10 @@ void _native_handle_uart0_input()
     char buf[42];
     int nread;
 
+    if (!FD_ISSET(_native_uart_in, &_native_rfds)) {
+        DEBUG("_native_handle_uart0_input - nothing to do\n");
+        return;
+    }
     DEBUG("_native_handle_uart0_input\n");
     _native_in_syscall = 0;
     _native_in_isr = 1;
@@ -44,15 +48,18 @@ void _native_handle_uart0_input()
     cpu_switch_context_exit();
 }
 
+int _native_set_uart_fds(void)
+{
+    DEBUG("_native_set_uart_fds");
+    FD_SET(_native_uart_in, &_native_rfds);
+    return _native_uart_in;
+}
+
 void _native_init_uart0()
 {
     _native_uart_out = STDOUT_FILENO;
     _native_uart_in = STDIN_FILENO;
 
-    /* set fds for select in lpm */
-    FD_ZERO(&_native_uart_rfds);
-    FD_SET(_native_uart_in, &_native_uart_rfds);
-
     puts("RIOT native uart0 initialized.");
 }
 

native/include/board_internal.h

 #ifdef MODULE_UART0
 #include <sys/select.h>
-extern fd_set _native_uart_rfds;
 void _native_handle_uart0_input(void);
 void _native_init_uart0(void);
+int _native_set_uart_fds(void);
 #endif