From 65f19c1d66f34a9ca070a5d24ab4c29474f0237a Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 26 Apr 2015 09:24:44 +0000
Subject: Added a fast interrupt to the STM32F4xx FPU stress test.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7927 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 testhal/STM32/STM32F4xx/IRQ_STORM_FPU/Makefile |  2 +-
 testhal/STM32/STM32F4xx/IRQ_STORM_FPU/main.c   | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

(limited to 'testhal/STM32')

diff --git a/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/Makefile b/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/Makefile
index 94c488700..4198e3c85 100644
--- a/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/Makefile
+++ b/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
+  USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
 endif
 
 # C specific options here (added to USE_OPT).
diff --git a/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/main.c b/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/main.c
index 694653dda..37e379334 100644
--- a/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/main.c
+++ b/testhal/STM32/STM32F4xx/IRQ_STORM_FPU/main.c
@@ -142,6 +142,21 @@ static const GPTConfig gpt3cfg = {
   0
 };
 
+CH_FAST_IRQ_HANDLER(STM32_TIM1_UP_HANDLER) {
+  float f1, f2, f3, f4, f5;
+
+  TIM1->SR = 0;
+
+  f1 = ff1(3.0f);
+  f2 = ff1(4.0f);
+  f3 = ff1(5.0f);
+  f5 = f1 + f2 + f3;
+  f4 = ff1(4.0f);
+  f5 = ff2(f5, f4, f5, f4);
+  if (f5 != 256.0f) {
+    chSysHalt("float corrupion #5");
+  }
+}
 
 /*===========================================================================*/
 /* Generic demo code.                                                        */
@@ -211,6 +226,17 @@ int main(void) {
   gptStart(&GPTD4, &gpt4cfg);
   gptStart(&GPTD3, &gpt3cfg);
 
+  /*
+   * Enabling TIM1 as a fast interrupts source.
+   */
+  rccEnableTIM1(false);
+  nvicEnableVector(STM32_TIM1_UP_NUMBER, 0);
+  TIM1->ARR  = 10000;
+  TIM1->PSC  = 0;
+  TIM1->CNT  = 0;
+  TIM1->DIER = TIM_DIER_UIE;
+  TIM1->CR1  = TIM_CR1_CEN;
+
   /*
    * Initializes the worker threads.
    */
-- 
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