Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c

Revision:

144:ef7eb2e8f9f7

Parent:

50:a417edff4437

--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c	Tue Aug 02 14:07:36 2016 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c	Fri Sep 02 15:07:44 2016 +0100
@@ -1,149 +1,142 @@
-/***************************************************************************//**
- * @file gpio_api.c
- *******************************************************************************
- * @section License
- * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
- *******************************************************************************
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- *    claim that you wrote the original software.
- * 2. Altered source versions must be plainly marked as such, and must not be
- *    misrepresented as being the original software.
- * 3. This notice may not be removed or altered from any source distribution.
- *
- * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
- * obligation to support this Software. Silicon Labs is providing the
- * Software "AS IS", with no express or implied warranties of any kind,
- * including, but not limited to, any implied warranties of merchantability
- * or fitness for any particular purpose or warranties against infringement
- * of any proprietary rights of a third party.
- *
- * Silicon Labs will not be liable for any consequential, incidental, or
- * special damages, or any other relief, or for any claim by any third party,
- * arising from your use of this Software.
- *
- ******************************************************************************/
-
-#include "gpio_api.h"
-#include "pinmap.h"
-#include "em_cmu.h"
-#include "mbed_assert.h"
-#include "sleepmodes.h"
-
-
-void gpio_write(gpio_t *obj, int value)
-{
-    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 ((uint32_t)obj->pin | 0xFFFFFF00 ) != (uint32_t)((PinName)NC);
-}
-
-/*
- * @return the GPIO port mask for this pin
- * Pin and port index encoded in one uint32.
- * First four bits represent the pin number
- * The remaining bits represent the pin mode
- */
-uint32_t gpio_set(PinName pin)
-{
-    return 1 << ((uint32_t) pin & 0xF);
-}
-
-void gpio_init(gpio_t *obj, PinName pin)
-{
-    MBED_ASSERT(pin != NC);
-
-    CMU_ClockEnable(cmuClock_HFPER, true);
-    CMU_ClockEnable(cmuClock_GPIO, true);
-    obj->pin = pin;
-}
-
-void gpio_mode(gpio_t *obj, PinMode mode)
-{
-    uint32_t pin = 1 << (obj->pin & 0xF);
-    uint32_t port = (obj->pin >> 4) & 0xF;
-
-    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
-#ifdef _GPIO_P_DOUTSET_MASK
-            GPIO->P[port].DOUTSET = pin;
-#else
-            GPIO->P[port].DOUT |= pin;
-#endif
-        } else {
-            //Clear DOUT
-#ifdef _GPIO_P_DOUTCLR_MASK
-            GPIO->P[port].DOUTCLR = pin;
-#else
-            GPIO->P[port].DOUT &= ~pin;
-#endif
-        }
-    } 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
-}
-
-// Used by DigitalInOut to set correct mode when direction is set
-void gpio_dir(gpio_t *obj, PinDirection direction)
-{
-    obj->dir = direction;
-    switch (direction) {
-        case PIN_INPUT:
-            gpio_mode(obj, PullDefault);
-            break;
-        case PIN_OUTPUT:
-            gpio_mode(obj, PullNone);
-            break;
-    }
-}
+/***************************************************************************//**
+ * @file gpio_api.c
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************/
+
+#include "gpio_api.h"
+#include "pinmap.h"
+#include "em_cmu.h"
+#include "mbed_assert.h"
+#include "sleepmodes.h"
+
+
+void gpio_write(gpio_t *obj, int value)
+{
+    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 ((uint32_t)obj->pin | 0xFFFFFF00 ) != (uint32_t)((PinName)NC);
+}
+
+/*
+ * @return the GPIO port mask for this pin
+ * Pin and port index encoded in one uint32.
+ * First four bits represent the pin number
+ * The remaining bits represent the pin mode
+ */
+uint32_t gpio_set(PinName pin)
+{
+    return 1 << ((uint32_t) pin & 0xF);
+}
+
+void gpio_init(gpio_t *obj, PinName pin)
+{
+    MBED_ASSERT(pin != NC);
+
+    CMU_ClockEnable(cmuClock_HFPER, true);
+    CMU_ClockEnable(cmuClock_GPIO, true);
+    obj->pin = pin;
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode)
+{
+    uint32_t pin = 1 << (obj->pin & 0xF);
+    uint32_t port = (obj->pin >> 4) & 0xF;
+
+    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
+#ifdef _GPIO_P_DOUTSET_MASK
+            GPIO->P[port].DOUTSET = pin;
+#else
+            GPIO->P[port].DOUT |= pin;
+#endif
+        } else {
+            //Clear DOUT
+#ifdef _GPIO_P_DOUTCLR_MASK
+            GPIO->P[port].DOUTCLR = pin;
+#else
+            GPIO->P[port].DOUT &= ~pin;
+#endif
+        }
+    } 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
+}
+
+// Used by DigitalInOut to set correct mode when direction is set
+void gpio_dir(gpio_t *obj, PinDirection direction)
+{
+    obj->dir = direction;
+    switch (direction) {
+        case PIN_INPUT:
+            gpio_mode(obj, PullDefault);
+            break;
+        case PIN_OUTPUT:
+            gpio_mode(obj, PullNone);
+            break;
+    }
+}