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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c

Revision:
593:78ee8643776a
Parent:
556:a217bc785985
Child:
627:4fa1328d9c60
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c	Fri Jul 17 09:15:10 2015 +0100
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c	Mon Jul 20 09:00:09 2015 +0100
@@ -19,9 +19,28 @@
 #include "mbed_assert.h"
 #include "sleepmodes.h"
 
-uint8_t gpio_get_index(gpio_t *obj)
+
+void gpio_write(gpio_t *obj, int value)
 {
-    return 0;
+    if (value) {
+        GPIO_PinOutSet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
+    } else {
+        GPIO_PinOutClear((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF);
+    }
+}
+
+int gpio_read(gpio_t *obj)
+{
+    if (obj->dir == PIN_INPUT) {
+        return GPIO_PinInGet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
+    } else {
+        return GPIO_PinOutGet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF);
+    }
+}
+
+int gpio_is_connected(const gpio_t *obj)
+{
+    return (obj->pin | 0xFFFFFF00 )!= (PinName)NC;
 }
 
 /*
@@ -44,25 +63,49 @@
     obj->pin = pin;
 }
 
-void gpio_pin_enable(gpio_t *obj, uint8_t enable)
-{
-    if (enable) {
-        pin_mode(obj->pin, obj->mode);
-    } else {
-        pin_mode(obj->pin, Disabled); // TODO_LP return mode to default value
-    }
-}
-
 void gpio_mode(gpio_t *obj, PinMode mode)
 {
+        if(obj->dir == PIN_INPUT) {
+        switch(mode) {
+            case PullDefault:
+                mode = Input;
+                break;
+            case PullUp:
+                mode = InputPullUp;
+                break;
+            case PullDown:
+                mode = InputPullDown;
+                break;
+            default:
+                break;
+        }
+        
+        //Handle DOUT setting
+        if((mode & 0x10) != 0) {
+            //Set DOUT
+            GPIO->P[(obj->pin >> 4) & 0xF].DOUTSET = 1 << (obj->pin & 0xF);
+        } else {
+            //Clear DOUT
+            GPIO->P[(obj->pin >> 4) & 0xF].DOUTCLR = 1 << (obj->pin & 0xF);
+        }
+    } else {
+        switch(mode) {
+            case PullDefault:
+                mode = PushPull;
+                break;
+            case PullUp:
+                mode = WiredAndPullUp;
+                break;
+            case PullDown:
+                mode = WiredOrPullDown;
+                break;
+            default:
+                break;
+        }
+    }
+    
     obj->mode = mode; // Update object
     pin_mode(obj->pin, mode); // Update register
-
-    //Handle pullup for input
-    if(mode == InputPullUp) {
-        //Set DOUT
-        GPIO->P[(obj->pin >> 4) & 0xF].DOUTSET = 1 << (obj->pin & 0xF);
-    }
 }
 
 // Used by DigitalInOut to set correct mode when direction is set
@@ -78,4 +121,3 @@
             break;
     }
 }
-