1 files changed, 171 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F4xx/FSMC_SRAM/main.c b/testhal/STM32/STM32F4xx/FSMC_SRAM/main.c
new file mode 100644
index 0000000..ba5c28d
--- /dev/null
+++ b/testhal/STM32/STM32F4xx/FSMC_SRAM/main.c
@@ -0,0 +1,171 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2014 Giovanni Di Sirio
+
+    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.
+*/
+/*
+   Concepts and parts of this file have been contributed by Uladzimir Pylinsky
+   aka barthess.
+ */
+
+/*
+TODO:
+write memtest function using ideas from http://www.memtest86.com/technical.htm
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+#include "string.h"
+
+#include "fsmc_sram.h"
+
+/*
+ ******************************************************************************
+ * DEFINES
+ ******************************************************************************
+ */
+#define USE_INFINITE_MEMTEST        FALSE
+
+/*
+ ******************************************************************************
+ * EXTERNS
+ ******************************************************************************
+ */
+
+/*
+ ******************************************************************************
+ * PROTOTYPES
+ ******************************************************************************
+ */
+
+/*
+ ******************************************************************************
+ * GLOBAL VARIABLES
+ ******************************************************************************
+ */
+static uint32_t sram_check_buf[16 * 1024];
+static uint32_t *sram_start = (uint32_t *)FSMC_Bank1_4_MAP;
+static const size_t sram_size = 524288;
+
+/*
+ * SRAM driver configuration structure.
+ */
+static const SRAMConfig sram_cfg = {
+    .btr = 2 << 8
+};
+
+/* benchmarking results in MiB/S */
+double memset_speed_ext;
+double memset_speed_int;
+double memcpy_speed_ext2int;
+double memcpy_speed_int2ext;
+
+/*
+ ******************************************************************************
+ ******************************************************************************
+ * LOCAL FUNCTIONS
+ ******************************************************************************
+ ******************************************************************************
+ */
+/**
+ *
+ */
+static void sram_benchmark(void){
+
+  size_t i=0;
+  time_measurement_t mem_tmu;
+
+  /* memset speed ext */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  memset(sram_start, 0x55, sram_size);
+  memset(sram_start, 0x00, sram_size);
+  chTMStopMeasurementX(&mem_tmu);
+  memset_speed_ext = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
+
+  /* memset speed int */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  for (i=0; i<16; i++)
+    memset(sram_check_buf, i, sizeof(sram_check_buf));
+  chTMStopMeasurementX(&mem_tmu);
+  memset_speed_int = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
+
+  /* memcpy ext2int */
+  chTMObjectInit(&mem_tmu);
+  chTMStartMeasurementX(&mem_tmu);
+  for (i=0; i<16; i++)
+    memcpy(sram_check_buf, sram_start+ i * sizeof(sram_check_buf), sizeof(sram_check_buf));
+  chTMStopMeasurementX(&mem_tmu);
+  memcpy_speed_ext2int = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
+
+  /* memcpy int2ext */
+  chTMObjectInit(&mem_tmu);
+  memset(sram_check_buf, 0xAA, sizeof(sram_check_buf));
+  chTMStartMeasurementX(&mem_tmu);
+  for (i=0; i<16; i++)
+    memcpy(sram_start + i * sizeof(sram_check_buf), sram_check_buf, sizeof(sram_check_buf));
+  chTMStopMeasurementX(&mem_tmu);
+  memcpy_speed_int2ext = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
+}
+
+/**
+ *
+ */
+#if USE_INFINITE_MEMTEST
+static void memstest(void){
+  while (true) {
+    ;
+  }
+}
+#endif /* USE_INFINITE_MEMTEST */
+
+/*
+ ******************************************************************************
+ * EXPORTED FUNCTIONS
+ ******************************************************************************
+ */
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+  /*
+   * System initializations.
+   * - HAL initialization, this also initializes the configured device drivers
+   *   and performs the board-specific initializations.
+   * - Kernel initialization, the main() function becomes a thread and the
+   *   RTOS is active.
+   */
+  halInit();
+  chSysInit();
+
+  fsmcSramInit();
+  fsmcSramStart(&SRAMD4, &sram_cfg);
+  sram_benchmark();
+
+#if USE_INFINITE_MEMTEST
+  memtest();
+#endif
+
+  /*
+   * Normal main() thread activity, in this demo it does nothing.
+   */
+  while (TRUE) {
+    chThdSleepMilliseconds(500);
+  }
+}
+
+