stm32f7: usart: enable usart peripheral

Add usart-v2 to stm32f7 to provide usart support in f7 series.

include/libopencm3/stm32/f7/usart.h

@@ -0,0 +1,55 @@
+/** @defgroup usart_defines USART Defines
+ *
+ * @brief <b>Defined Constants and Types for the STM32F7xx USART</b>
+ *
+ * @ingroup STM32F7xx_defines
+ *
+ * @version 1.0.0
+ *
+ * @date 5 December 2012
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_USART_H
+#define LIBOPENCM3_USART_H
+
+#include <libopencm3/stm32/common/usart_common_all.h>
+#include <libopencm3/stm32/common/usart_common_v2.h>
+
+
+/** @defgroup usart_reg_base USART register base addresses
+ * @ingroup STM32F_usart_defines
+ * Holds all the U(S)ART peripherals supported.
+ * @{
+ */
+#define USART1				USART1_BASE
+#define USART2				USART2_BASE
+#define USART3				USART3_BASE
+#define UART4				UART4_BASE
+#define UART5				UART5_BASE
+/**@}*/
+
+BEGIN_DECLS
+
+END_DECLS
+
+#endif
+

include/libopencm3/stm32/usart.h

@@ -30,6 +30,8 @@
 #       include <libopencm3/stm32/f3/usart.h>
 #elif defined(STM32F4)
 #       include <libopencm3/stm32/f4/usart.h>
+#elif defined(STM32F7)
+#       include <libopencm3/stm32/f7/usart.h>
 #elif defined(STM32L0)
 #       include <libopencm3/stm32/l0/usart.h>
 #elif defined(STM32L1)

lib/stm32/f7/Makefile

@@ -48,6 +48,8 @@ OBJS		+= rcc_common_all.o flash_common_f234.o flash_common_f24.o
 
 OBJS		+= rng_common_v1.o
 
+OBJS		+= usart_common_all.o usart_common_v2.o
+
 VPATH += ../../usb:../:../../cm3:../common
 VPATH += ../../ethernet