From 33f1b2541ef3a15b4ed5875f741d71a19e773217 Mon Sep 17 00:00:00 2001
From: barthess <barthess@yandex.ru>
Date: Tue, 24 Feb 2015 00:10:02 +0300
Subject: FSMC_SRAM testhal. Added memtest and membench.

---
 testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c | 112 +++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c

(limited to 'testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c')

diff --git a/testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c b/testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c
new file mode 100644
index 0000000..4e9dfcb
--- /dev/null
+++ b/testhal/STM32/STM32F4xx/FSMC_SRAM/membench.c
@@ -0,0 +1,112 @@
+/*
+    ChibiOS/RT - Copyright (C) 2013-2014 Uladzimir Pylinsky aka barthess
+
+    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.
+*/
+
+#include <string.h>
+
+#include "ch.h"
+#include "hal.h"
+
+#include "membench.h"
+
+/*
+ ******************************************************************************
+ * DEFINES
+ ******************************************************************************
+ */
+
+/*
+ ******************************************************************************
+ * EXTERNS
+ ******************************************************************************
+ */
+
+/*
+ ******************************************************************************
+ * PROTOTYPES
+ ******************************************************************************
+ */
+
+/*
+ ******************************************************************************
+ * GLOBAL VARIABLES
+ ******************************************************************************
+ */
+volatile int warning_suppressor;
+
+/*
+ ******************************************************************************
+ ******************************************************************************
+ * LOCAL FUNCTIONS
+ ******************************************************************************
+ ******************************************************************************
+ */
+/*
+ * Calculates memory access time in MiB.
+ */
+double speed(const time_measurement_t *tmu, size_t len) {
+  double size; // MiB
+  double time; // sec
+
+  size  = len;
+  size /= 1024 * 1024;
+
+  time  = tmu->last;
+  time /= STM32_SYSCLK;
+
+  return size / time;
+}
+
+/*
+ ******************************************************************************
+ * EXPORTED FUNCTIONS
+ ******************************************************************************
+ */
+
+/*
+ *
+ */
+void membench_run(membench_t *dest, const membench_t *src,
+                  membench_result_t *result) {
+  time_measurement_t mem_tmu;
+  size_t len;
+
+  if (src->size < dest->size)
+    len = src->size;
+  else
+    len = dest->size;
+
+  /* memset */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  memset(dest->start, 0x55, dest->size);
+  chTMStopMeasurementX(&mem_tmu);
+  result->memset_spd = speed(&mem_tmu, dest->size);
+
+  /* memcpy */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  memcpy(dest->start, src->start, len);
+  chTMStopMeasurementX(&mem_tmu);
+  result->memcpy_spd = speed(&mem_tmu, len);
+
+  /* memcmp */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  warning_suppressor = memcmp(dest->start, src->start, len);
+  chTMStopMeasurementX(&mem_tmu);
+  result->memcmp_spd = speed(&mem_tmu, len);
+}
+
-- 
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