From cd33832ea347eef0f2380964eddcd2e3744339ba Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sat, 5 Jan 2019 19:24:22 +0000
Subject: [PATCH] Event enable check API added to PAL driver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@12530 110e8d01-0319-4d1e-a829-52ad28d1bb01
---
 os/hal/include/hal_pal.h                    | 36 +++++++++++++++++++++
 os/hal/ports/STM32/LLD/GPIOv1/hal_pal_lld.h | 14 ++++++++
 os/hal/ports/STM32/LLD/GPIOv2/hal_pal_lld.h | 14 ++++++++
 os/hal/ports/STM32/LLD/GPIOv3/hal_pal_lld.h | 14 ++++++++
 readme.txt                                  |  1 +
 5 files changed, 79 insertions(+)

diff --git a/os/hal/include/hal_pal.h b/os/hal/include/hal_pal.h
index df87d4d1a..9e0781554 100644
--- a/os/hal/include/hal_pal.h
+++ b/os/hal/include/hal_pal.h
@@ -912,6 +912,42 @@ typedef struct {
     osalSysUnlock();                                                        \
   } while (false)
 
+/**
+ * @brief   Pad event enable check.
+ *
+ * @param[in] port      port identifier
+ * @param[in] pad       pad number within the port
+ * @return              Pad event status.
+ * @retval false        if the pad event is disabled.
+ * @retval true         if the pad event is enabled.
+ *
+ * @xclass
+ */
+#if !defined(pal_lld_ispadeventenabled) || defined(__DOXYGEN__)
+#define palIsPadEventEnabledX(port, pad) false
+#else
+#define palIsPadEventEnabledX(port, pad)                                    \
+  pal_lld_ispadeventenabled(port, pad)
+#endif
+
+/**
+ * @brief   Line event enable check.
+ *
+ * @param[in] line      line identifier
+ * @return              Line event status.
+ * @retval false        if the line event is disabled.
+ * @retval true         if the line event is enabled.
+ *
+ * @xclass
+ */
+#if !defined(pal_lld_islineeventenabled) || defined(__DOXYGEN__)
+#define palIsLineEventEnabledX(line)                                        \
+  pal_lld_ispadeventenabled(PAL_PORT(line), PAL_PAD(line))
+#else
+#define palIsLineEventEnabledX(line)                                        \
+  pal_lld_islineeventenabled(line)
+#endif
+
 #endif /* PAL_USE_CALLBACKS || PAL_USE_WAIT */
 
 #if (PAL_USE_CALLBACKS == TRUE) || defined(__DOXYGEN__)
diff --git a/os/hal/ports/STM32/LLD/GPIOv1/hal_pal_lld.h b/os/hal/ports/STM32/LLD/GPIOv1/hal_pal_lld.h
index 9ec04153c..d7d26942e 100644
--- a/os/hal/ports/STM32/LLD/GPIOv1/hal_pal_lld.h
+++ b/os/hal/ports/STM32/LLD/GPIOv1/hal_pal_lld.h
@@ -414,6 +414,20 @@ typedef uint32_t iopadid_t;
 #define pal_lld_get_line_event(line)                                        \
   &_pal_events[PAL_PAD(line)]
 
+/**
+ * @brief   Pad event enable check.
+ *
+ * @param[in] port      port identifier
+ * @param[in] pad       pad number within the port
+ * @return              Pad event status.
+ * @retval false        if the pad event is disabled.
+ * @retval true         if the pad event is enabled.
+ *
+ * @notapi
+ */
+#define pal_lld_ispadeventenabled(port, pad)                                \
+  (bool)((EXTI->IMR & (1U << (uint32_t)pad)) != 0U)
+
 #if !defined(__DOXYGEN__)
 extern const PALConfig pal_default_config;
 extern palevent_t _pal_events[16];
diff --git a/os/hal/ports/STM32/LLD/GPIOv2/hal_pal_lld.h b/os/hal/ports/STM32/LLD/GPIOv2/hal_pal_lld.h
index 1d9033753..d6dd4df72 100644
--- a/os/hal/ports/STM32/LLD/GPIOv2/hal_pal_lld.h
+++ b/os/hal/ports/STM32/LLD/GPIOv2/hal_pal_lld.h
@@ -472,6 +472,20 @@ typedef uint32_t iopadid_t;
 #define pal_lld_get_line_event(line)                                        \
   &_pal_events[PAL_PAD(line)]
 
+/**
+ * @brief   Pad event enable check.
+ *
+ * @param[in] port      port identifier
+ * @param[in] pad       pad number within the port
+ * @return              Pad event status.
+ * @retval false        if the pad event is disabled.
+ * @retval true         if the pad event is enabled.
+ *
+ * @notapi
+ */
+#define pal_lld_ispadeventenabled(port, pad)                                \
+  (bool)((EXTI->IMR & (1U << (uint32_t)pad)) != 0U)
+
 #if !defined(__DOXYGEN__)
 extern palevent_t _pal_events[16];
 #endif
diff --git a/os/hal/ports/STM32/LLD/GPIOv3/hal_pal_lld.h b/os/hal/ports/STM32/LLD/GPIOv3/hal_pal_lld.h
index 638c9a81d..0348744a0 100644
--- a/os/hal/ports/STM32/LLD/GPIOv3/hal_pal_lld.h
+++ b/os/hal/ports/STM32/LLD/GPIOv3/hal_pal_lld.h
@@ -512,6 +512,20 @@ typedef uint32_t iopadid_t;
 #define pal_lld_get_line_event(line)                                        \
   &_pal_events[PAL_PAD(line)]
 
+/**
+ * @brief   Pad event enable check.
+ *
+ * @param[in] port      port identifier
+ * @param[in] pad       pad number within the port
+ * @return              Pad event status.
+ * @retval false        if the pad event is disabled.
+ * @retval true         if the pad event is enabled.
+ *
+ * @notapi
+ */
+#define pal_lld_ispadeventenabled(port, pad)                                \
+  (bool)((EXTI->IMR & (1U << (uint32_t)pad)) != 0U)
+
 #if !defined(__DOXYGEN__)
 extern palevent_t _pal_events[16];
 #endif
diff --git a/readme.txt b/readme.txt
index a5865e8ad..2b657c139 100644
--- a/readme.txt
+++ b/readme.txt
@@ -75,6 +75,7 @@
 *****************************************************************************
 
 *** Next ***
+- NEW: Event enable check API added to PAL driver.
 - NEW: Now it is possible to define separate directories for each
        configuration file.
 - NEW: Added option to enable bypass on SDIOv1 driver allowing to use a