Set the default status for an input pin to PullUp instead of letting it be PullDown.

stevew817 · stevew817 · commit 0cc42db36d65 · 2015-05-04T13:27:02.000-05:00
diff --git a/libraries/mbed/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c b/libraries/mbed/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c
@@ -58,6 +58,12 @@ void gpio_mode(gpio_t *obj, PinMode mode)
 {
     obj->mode = mode; // Update object
     pin_mode(obj->pin, mode); // Update register
+    
+    //Handle pullup for input
+    if(mode == InputPullUp) {
+        //Set DOUT
+        GPIO->P[obj->port & 0xF].DOUTSET = 1 << (obj->pin & 0xF);
+    }
 }
 
 // Used by DigitalInOut to set correct mode when direction is set

Original file line number	Diff line number	Diff line change
`@@ -58,6 +58,12 @@ void gpio_mode(gpio_t *obj, PinMode mode)`
`58`	`58`	`{`
`59`	`59`	`obj->mode = mode; // Update object`
`60`	`60`	`pin_mode(obj->pin, mode); // Update register`
	`61`	`+`
	`62`	`+ //Handle pullup for input`
	`63`	`+ if(mode == InputPullUp) {`
	`64`	`+ //Set DOUT`
	`65`	`+ GPIO->P[obj->port & 0xF].DOUTSET = 1 << (obj->pin & 0xF);`
	`66`	`+ }`
`61`	`67`	`}`
`62`	`68`
`63`	`69`	`// Used by DigitalInOut to set correct mode when direction is set`