From 0b80fa4bcb908250b3ae6b4a0db0254ca03f890a Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 29 Dec 2019 18:10:48 +0000
Subject: [PATCH] Added missing file.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@13234 27425a3e-05d8-49a3-a47f-9c15f0e5edd8
---
 .../STM32/LLD/EXTIv1/stm32_exti19-21.inc      | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 os/hal/ports/STM32/LLD/EXTIv1/stm32_exti19-21.inc

diff --git a/os/hal/ports/STM32/LLD/EXTIv1/stm32_exti19-21.inc b/os/hal/ports/STM32/LLD/EXTIv1/stm32_exti19-21.inc
new file mode 100644
index 000000000..670fbdfb9
--- /dev/null
+++ b/os/hal/ports/STM32/LLD/EXTIv1/stm32_exti19-21.inc
@@ -0,0 +1,104 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    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.
+*/
+
+/**
+ * @file    EXTIv1/stm32_exti19-21.inc
+ * @brief   Shared EXTI19-21 handler.
+ *
+ * @addtogroup STM32_EXTI1921_HANDLER
+ * @{
+ */
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/* Priority settings checks.*/
+#if !defined(STM32_IRQ_EXTI1921_PRIORITY)
+#error "STM32_IRQ_EXTI1921_PRIORITY not defined in mcuconf.h"
+#endif
+
+#if !OSAL_IRQ_IS_VALID_PRIORITY(STM32_IRQ_EXTI1921_PRIORITY)
+#error "Invalid IRQ priority assigned to STM32_IRQ_EXTI1921_PRIORITY"
+#endif
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+static inline void exti19_exti21_irq_init(void) {
+#if defined(STM32_EXTI19_IS_USED) || defined(STM32_EXTI21_IS_USED)
+  nvicEnableVector(STM32_EXTI1921_NUMBER, STM32_IRQ_EXTI1921_PRIORITY);
+#endif
+}
+
+static inline void exti19_exti21_irq_deinit(void) {
+#if defined(STM32_EXTI19_IS_USED) || defined(STM32_EXTI21_IS_USED)
+  nvicDisableVector(STM32_EXTI1921_NUMBER);
+#endif
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+#if defined(STM32_EXTI19_IS_USED) || defined(STM32_EXTI21_IS_USED) ||       \
+    defined(__DOXYGEN__)
+#if !defined(STM32_DISABLE_EXTI1921_HANDLER)
+/**
+ * @brief   EXTI[0], EXTI[1] interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(STM32_EXTI1921_HANDLER) {
+  uint32_t pr;
+
+  OSAL_IRQ_PROLOGUE();
+
+  extiGetAndClearGroup1((1U << 19) | (1U << 21), pr);
+
+  /* Could be unused.*/
+  (void)pr;
+
+#if defined(STM32_EXTI19_ISR)
+  STM32_EXTI16_ISR(pr, 19);
+#endif
+#if defined(STM32_EXTI21_ISR)
+  STM32_EXTI16_ISR(pr, 21);
+#endif
+
+  OSAL_IRQ_EPILOGUE();
+}
+#endif
+#endif
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/** @} */