From 02f181b45c1f060f2641f8938d693d4f26822b04 Mon Sep 17 00:00:00 2001
From: edolomb <none@example.com>
Date: Wed, 10 Jan 2018 16:49:56 +0000
Subject: Clearing pending interrupts in aicInit()

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11253 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/ports/SAMA/SAMA5D2x/aic.c | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'os/hal/ports/SAMA')

diff --git a/os/hal/ports/SAMA/SAMA5D2x/aic.c b/os/hal/ports/SAMA/SAMA5D2x/aic.c
index 6def5c51a..2b5d95e61 100644
--- a/os/hal/ports/SAMA/SAMA5D2x/aic.c
+++ b/os/hal/ports/SAMA/SAMA5D2x/aic.c
@@ -98,12 +98,26 @@ void aicInit(void) {
   Aic *aic = AIC;
 #endif
 
+  aicDisableWP(aic);
   unsigned i;
   /* Disable all interrupts */
   for (i = 1; i < ID_PERIPH_COUNT; i++) {
     aic->AIC_SSR = i;
     aic->AIC_IDCR = AIC_IDCR_INTD;
+
+    /* Changes type */
+    aic->AIC_SSR = i;
+    aic->AIC_SMR = AIC_SMR_SRCTYPE(EXT_NEGATIVE_EDGE);
+
+    /* Clear pending interrupt */
+    aic->AIC_SSR = i;
+    aic->AIC_ICCR = AIC_ICCR_INTCLR;
+
+    /* Changes type */
+    aic->AIC_SSR = i;
+    aic->AIC_SMR = AIC_SMR_SRCTYPE(INT_LEVEL_SENSITIVE);
   }
+  aicEnableWP(aic);
 }
 
 /**
@@ -137,6 +151,33 @@ void aicSetSourcePriority(uint32_t source, uint8_t priority) {
   aicEnableWP(aic);
 }
 
+/**
+ * @brief   Configures type of interrupt in the AIC.
+ *
+ * @param[in] source    interrupt source to configure
+ * @param[in] type      type interrupt of the selected source.
+ */
+void aicSetIntSourceType(uint32_t source, uint8_t type) {
+
+#if SAMA_HAL_IS_SECURE
+  Aic *aic = SAIC;
+#else
+  Aic *aic = AIC;
+#endif
+  /* Disable write protection */
+  aicDisableWP(aic);
+  /* Set source id */
+  aic->AIC_SSR = source;
+  /* Disable the interrupt first */
+  aic->AIC_IDCR = AIC_IDCR_INTD;
+  /* Configure priority */
+  aic->AIC_SMR = AIC_SMR_SRCTYPE(type);
+  /* Clear interrupt */
+  aic->AIC_ICCR = AIC_ICCR_INTCLR;
+  /* Enable write protection */
+  aicEnableWP(aic);
+}
+
 /**
  * @brief   Sets the source handler of an interrupt.
  *
-- 
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