mbed library sources for airmote

Fork of mbed-src by mbed official

Revision:
339:40bd4701f3e2
Parent:
300:55638feb26a4
Child:
340:28d1f895c6fe
--- a/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c	Mon Oct 06 11:00:07 2014 +0100
+++ b/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c	Mon Oct 06 11:45:07 2014 +0100
@@ -85,8 +85,12 @@
     obj->index = 0;
 
     // set rx/tx pins in PullUp mode
-    pin_mode(tx, PullUp);
-    pin_mode(rx, PullUp);
+    if (tx != NC) {
+        pin_mode(tx, PullUp);
+    }
+    if (rx != NC) {
+        pin_mode(rx, PullUp);
+    }
 
     if (uart == STDIO_UART) {
         stdio_uart_inited = 1;