mbed official / mbed-src

mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Diff: common/gpio.c

Revision:
160:6870f452afa4
Parent:
127:ce7cebc0511f
Child:
221:8276e3a4886f
--- a/common/gpio.c	Mon Apr 14 10:30:07 2014 +0100
+++ b/common/gpio.c	Mon Apr 14 11:30:06 2014 +0100
@@ -18,16 +18,20 @@
 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
 {
     gpio_init(gpio, pin);    
-    gpio_dir(gpio, PIN_INPUT);
-    gpio_mode(gpio, mode);
+    if (pin != NC) {    
+        gpio_dir(gpio, PIN_INPUT);
+        gpio_mode(gpio, mode);
+    }
 }
     
 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
 {
     gpio_init(gpio, pin);
-    gpio_write(gpio, value);
-    gpio_dir(gpio, PIN_OUTPUT);
-    gpio_mode(gpio, mode);
+    if (pin != NC) {
+        gpio_write(gpio, value);
+        gpio_dir(gpio, PIN_OUTPUT);
+        gpio_mode(gpio, mode);
+    }
 }
 
 void gpio_init_in(gpio_t* gpio, PinName pin) {
@@ -49,7 +53,8 @@
 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
     if (direction == PIN_INPUT) {
         _gpio_init_in(gpio, pin, mode);
-        gpio_write(gpio, value); // we prepare the value in case it is switched later
+        if (pin != NC)
+            gpio_write(gpio, value); // we prepare the value in case it is switched later
     } else {
         _gpio_init_out(gpio, pin, mode, value);
     }