From d8b4ba3e592d490fb1572a07b6c48d7ba6c02687 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Thu, 13 Aug 2015 09:57:10 +0000
Subject: Added cache handling to DMAv2 driver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8209 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 testhal/STM32/STM32F7xx/GPT-ADC-SPI-PWM-ICU/main.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

(limited to 'testhal/STM32/STM32F7xx')

diff --git a/testhal/STM32/STM32F7xx/GPT-ADC-SPI-PWM-ICU/main.c b/testhal/STM32/STM32F7xx/GPT-ADC-SPI-PWM-ICU/main.c
index a71d2540f..0ff6372bf 100644
--- a/testhal/STM32/STM32F7xx/GPT-ADC-SPI-PWM-ICU/main.c
+++ b/testhal/STM32/STM32F7xx/GPT-ADC-SPI-PWM-ICU/main.c
@@ -47,6 +47,11 @@ size_t nx = 0, ny = 0;
 static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
 
   (void)adcp;
+
+  /* DMA buffer invalidation because data cache.*/
+  dmaBufferInvalidate(buffer, n * ADC_GRP1_NUM_CHANNELS);
+
+  /* Updating counters.*/
   if (samples1 == buffer) {
     nx += n;
   }
@@ -111,11 +116,6 @@ static THD_FUNCTION(Thread1, arg) {
  */
 int main(void) {
 
-  SCB_InvalidateICache();
-  SCB_EnableICache();
-  SCB_InvalidateDCache();
-  SCB_EnableDCache();
-
   /*
    * System initializations.
    * - HAL initialization, this also initializes the configured device drivers
@@ -126,6 +126,11 @@ int main(void) {
   halInit();
   chSysInit();
 
+  SCB_InvalidateICache();
+  SCB_EnableICache();
+  SCB_InvalidateDCache();
+  SCB_EnableDCache();
+
   /*
    * Activates the serial driver 1 using the driver default configuration.
    */
-- 
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