added code for gpio

refs 7890

org.fortiss.af3.platform.raspberry/trunk/lib/inc/GPIO.h

 #ifndef __GPIO_H
 #define __GPIO_H
 
+#include <wiringPi.h>
 #include "inc-gen/data_dictionary.h"
 
 // types
@@ -8,6 +9,8 @@ typedef int GPIO_PIN_T;
 
 // init, term
 void gpio_init(GPIO_PIN_T pin);
+void gpio_init_in(GPIO_PIN_T pin);
+void gpio_init_out(GPIO_PIN_T pin);
 void gpio_term(GPIO_PIN_T pin);
 
 // noval

org.fortiss.af3.platform.raspberry/trunk/lib/src/GPIO.c

@@ -8,8 +8,24 @@ void gpio_init(GPIO_PIN_T pin) {
     // important, since all pins are accessing the same method
     if(gpio_initialized) return;
 
+    if(wiringPiSetup() == -1) {
+        perror("cannot setup wiring pi\n");
+	return;
+    }
+
     gpio_initialized = true;
-    // TODO initialize...
+}
+
+void gpio_init_in(GPIO_PIN_T pin) {
+    gpio_init(pin);
+    
+    pinMode(pin, INPUT);
+}
+
+void gpio_init_out(GPIO_PIN_T pin) {
+    gpio_init(pin);
+    
+    pinMode(pin, OUTPUT);
 }
 
 void gpio_term(GPIO_PIN_T pin) {
@@ -30,11 +46,11 @@ void gpio_set_noval(GPIO_PIN_T pin) {
 
 // readers
 GEN_TYPE_boolean gpio_read(GPIO_PIN_T pin) {
-    return false;
+    return digitalRead(pin);
 }
 
 // writers
 void gpio_write(GPIO_PIN_T pin, GEN_TYPE_boolean value) {
-
+    digitalWrite(pin, value);
 }
 

org.fortiss.af3.platform.raspberry/trunk/src/org/fortiss/af3/platform/raspberry/generator/executable/GPIExecutable.java

@@ -46,7 +46,7 @@ public class GPIExecutable extends GenericReceiverExecutable {
 	/** {@inheritDoc} */
 	@Override
 	public IExpressionTerm getInitialization() {
-		return funcCall("gpio_init", intConst(getPinFromModelElement(modelElement)));
+		return funcCall("gpio_init_in", intConst(getPinFromModelElement(modelElement)));
 	}
 
 	/** {@inheritDoc} */

org.fortiss.af3.platform.raspberry/trunk/src/org/fortiss/af3/platform/raspberry/generator/executable/GPOExecutable.java

@@ -46,7 +46,7 @@ public class GPOExecutable extends GenericTransmitterExecutable {
 	/** {@inheritDoc} */
 	@Override
 	public IExpressionTerm getInitialization() {
-		return funcCall("gpio_init", intConst(getPinFromModelElement(modelElement)));
+		return funcCall("gpio_init_out", intConst(getPinFromModelElement(modelElement)));
 	}
 
 	/** {@inheritDoc} */