stm32g0: add gpio.

regular peripheral.

include/libopencm3/stm32/g0/gpio.h

@@ -0,0 +1,76 @@
+/** @defgroup gpio_defines GPIO Defines
+ *
+ * @ingroup STM32G0xx_defines
+ *
+ * @brief <b>Defined Constants and Types for the STM32G0xx General Purpose I/O</b>
+ *
+ * @version 1.0.0
+ *
+ * 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_GPIO_H
+#define LIBOPENCM3_GPIO_H
+
+#include <libopencm3/stm32/common/gpio_common_f24.h>
+
+/*****************************************************************************/
+/* Module definitions                                                        */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* Register definitions                                                      */
+/*****************************************************************************/
+
+#define GPIO_BRR(port)			MMIO32((port) + 0x28)
+#define GPIOA_BRR			GPIO_BRR(GPIOA)
+#define GPIOB_BRR			GPIO_BRR(GPIOB)
+#define GPIOC_BRR			GPIO_BRR(GPIOC)
+#define GPIOD_BRR			GPIO_BRR(GPIOD)
+#define GPIOE_BRR			GPIO_BRR(GPIOE)
+#define GPIOF_BRR			GPIO_BRR(GPIOF)
+
+/*****************************************************************************/
+/* Register values                                                           */
+/*****************************************************************************/
+
+/** @defgroup gpio_speed GPIO Output Pin Speed
+@ingroup gpio_defines
+@{*/
+#define GPIO_OSPEED_LOW		0x0
+#define GPIO_OSPEED_MED		0x1
+#define GPIO_OSPEED_FAST	0x2
+#define GPIO_OSPEED_HIGH	0x3
+/**@}*/
+
+/*****************************************************************************/
+/* API definitions                                                           */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* API Functions                                                             */
+/*****************************************************************************/
+
+BEGIN_DECLS
+
+END_DECLS
+
+#endif
+/**@}*/

include/libopencm3/stm32/gpio.h

@@ -38,6 +38,8 @@
 #       include <libopencm3/stm32/l1/gpio.h>
 #elif defined(STM32L4)
 #       include <libopencm3/stm32/l4/gpio.h>
+#elif defined(STM32G0)
+#       include <libopencm3/stm32/g0/gpio.h>
 #elif defined(GD32F1X0)
 #       include <libopencm3/gd32/f1x0/gpio.h>
 #else

lib/stm32/g0/Makefile

@@ -36,7 +36,7 @@ TGT_CFLAGS	+= $(STANDARD_FLAGS)
 
 ARFLAGS		= rcs
 
-OBJS        += 
+OBJS        = gpio_common_all.o gpio_common_f0234.o 
 
 
 VPATH +=../:../../cm3:../common