[STM32L4] place holder for common object definition

Some of the objects in object.h are the same for all targets.
Create a place where to define those common definitions, and
start using it for pwm object.

Author: Laurent MEUNIER

hal/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_DISCO_L476VG/objects.h

@@ -96,21 +96,12 @@ struct i2c_s {
     uint32_t slave;
 };
 
-struct pwmout_s {
-    PWMName pwm;
-    PinName pin;
-    uint32_t period;
-    uint32_t pulse;
-    uint32_t channel;
-    uint32_t inverted;
-};
-
-
 struct can_s {
     CANName can;
     int index;
 };
 
+#include "common_objects.h"
 #include "gpio_object.h"
 
 #ifdef __cplusplus

hal/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L432KC/objects.h

@@ -101,21 +101,13 @@ struct i2c_s {
     uint32_t slave;
 };
 
-struct pwmout_s {
-    PWMName pwm;
-    PinName pin;
-    uint32_t period;
-    uint32_t pulse;
-    uint32_t channel;
-    uint32_t inverted;
-};
-
 struct can_s {
     CANName can;
     int index;
 };
 
 #include "gpio_object.h"
+#include "common_objects.h"
 
 #ifdef __cplusplus
 }

hal/targets/hal/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/objects.h

@@ -101,20 +101,12 @@ struct i2c_s {
     uint32_t slave;
 };
 
-struct pwmout_s {
-    PWMName pwm;
-    PinName pin;
-    uint32_t period;
-    uint32_t pulse;
-    uint32_t channel;
-    uint32_t inverted;
-};
-
 struct can_s {
     CANName can;
     int index;
 };
 
+#include "common_objects.h"
 #include "gpio_object.h"
 
 #ifdef __cplusplus

hal/targets/hal/TARGET_STM/TARGET_STM32L4/common_objects.h

@@ -0,0 +1,58 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2016, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_COMMON_OBJECTS_H
+#define MBED_COMMON_OBJECTS_H
+
+#include "cmsis.h"
+#include "PortNames.h"
+#include "PeripheralNames.h"
+#include "PinNames.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct pwmout_s {
+    PWMName pwm;
+    PinName pin;
+    uint32_t period;
+    uint32_t pulse;
+    uint8_t channel;
+    uint8_t inverted;
+};
+
+#include "gpio_object.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+