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Add ESP32 High Memory Application Example

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This commit is contained in:
Alan C. Assis 2020-11-11 15:05:50 -03:00 committed by Xiang Xiao
parent 590e6432cb
commit 048c44cd61
4 changed files with 348 additions and 0 deletions
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29
examples/esp32_himem/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config EXAMPLES_ESP32_HIMEM
tristate "ESP32 HIMEM Example"
default n
---help---
ESP32 HIMEM Example
if EXAMPLES_ESP32_HIMEM
config EXAMPLES_ESP32_HIMEM_PROGNAME
string "Program name"
default "esp32himem"
---help---
This is the name of the program that will be used when the NSH ELF
program is installed.
config EXAMPLES_ESP32_HIMEM_PRIORITY
int "ESP32 HIMEM task priority"
default 100
config EXAMPLES_ESP32_HIMEM_STACKSIZE
int "ESP32 HIMEM stack size"
default DEFAULT_TASK_STACKSIZE
endif

39
examples/esp32_himem/Make.defs Normal file
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############################################################################
# apps/examples/esp32himem/Make.defs
# Adds selected applications to apps/ build
#
# Copyright (C) 2015 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
ifneq ($(CONFIG_EXAMPLES_ESP32_HIMEM),)
CONFIGURED_APPS += $(APPDIR)/examples/esp32_himem
endif

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examples/esp32_himem/Makefile Normal file
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############################################################################
# apps/examples/esp32himem/Makefile
#
# Copyright (C) 2008, 2010-2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
include $(APPDIR)/Make.defs
# ESP32 HIMEM built-in application info
PROGNAME = $(CONFIG_EXAMPLES_ESP32_HIMEM_PROGNAME)
PRIORITY = $(CONFIG_EXAMPLES_ESP32_HIMEM_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_ESP32_HIMEM_STACKSIZE)
MODULE = $(CONFIG_EXAMPLES_ESP32_HIMEM)
# ESP32 HIMEM Example
MAINSRC = esp32_himem_main.c
include $(APPDIR)/Application.mk

231
examples/esp32_himem/esp32_himem_main.c Normal file
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/****************************************************************************
* apps/examples/esp32_himem/esp32_himem_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdint.h>
#include <nuttx/himem/himem.h>
/* Fills the memory in 32-bit words for speed. */
static void fill_mem(void *mem, int len)
{
uint32_t *p = (uint32_t *)mem;
unsigned int val = 0xa5a5a5a5;
for (int i = 0; i < len / 4; i++)
{
*p++ = val;
}
}
/* Check the memory filled by fill_mem. Returns true if the data matches
* the data that fill_mem wrote.
* Returns true if there's a match, false when the region differs from what
* should be there.
*/
static bool check_mem(void *mem, int len, int phys_addr)
{
uint32_t *p = (uint32_t *)mem;
unsigned int val = 0xa5a5a5a5;
for (int i = 0; i < len / 4; i++)
{
if (val != *p)
{
printf("check_mem: %x has 0x%08x expected 0x%08x\n",
phys_addr + ((char *) p - (char *) mem), *p, val);
return false;
}
p++;
}
return true;
}
/* Allocate a himem region, fill it with data, check it and release it. */
static int test_region(int fd, struct esp_himem_par *param)
{
int ret;
int i;
DEBUGASSERT(param != NULL);
/* Set predefined parameters */
param->len = ESP_HIMEM_BLKSZ;
param->range_offset = 0;
param->flags = 0;
/* Allocate the memory we're going to check. */
ret = ioctl(fd, HIMEMIOC_ALLOC_BLOCKS, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(ALLOC_BLOCKS) failed: %d\n", errno);
return -ENOMEM;
}
/* Allocate a block of address range */
ret = ioctl(fd, HIMEMIOC_ALLOC_MAP_RANGE,
(unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(ALLOC_MAP_RANGE) failed: %d\n", errno);
return -ENOMEM;
}
for (i = 0; i < param->memfree; i += ESP_HIMEM_BLKSZ)
{
param->ptr = NULL;
param->ram_offset = i;
/* Map in block, write pseudo-random data, unmap block. */
ret = ioctl(fd, HIMEMIOC_MAP, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(MAP) failed: %d\n", errno);
ret = -ENOMEM;
goto free_rammem;
}
fill_mem(param->ptr, ESP_HIMEM_BLKSZ);
ret = ioctl(fd, HIMEMIOC_UNMAP, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(UNMAP) failed: %d\n", errno);
ret = -ENOMEM;
goto free_rammem;
}
}
/* give the OS some time to do things so the task watchdog doesn't bark */
usleep(1);
for (i = 0; i < param->memfree; i += ESP_HIMEM_BLKSZ)
{
param->ptr = NULL;
param->ram_offset = i;
/* Map in block, check against earlier written pseudo-random data,
* unmap block.
*/
ret = ioctl(fd, HIMEMIOC_MAP, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(MAP) failed: %d\n", errno);
ret = -ENOMEM;
goto free_rammem;
}
if (!check_mem(param->ptr, ESP_HIMEM_BLKSZ, i))
{
printf("Error in block %d\n", i / ESP_HIMEM_BLKSZ);
ret = -ENOMEM;
goto free_rammem;
}
ret = ioctl(fd, HIMEMIOC_UNMAP, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(UNMAP) failed: %d\n", errno);
ret = -ENOMEM;
goto free_rammem;
}
}
/* Free allocated memory */
free_rammem:
ret = ioctl(fd, HIMEMIOC_FREE_MAP_RANGE,
(unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(FREE_MAP_RANGE) failed: %d\n", errno);
}
free_memaddr:
ret = ioctl(fd, HIMEMIOC_FREE_BLOCKS, (unsigned long)((uintptr_t)param));
if (ret < 0)
{
fprintf(stderr, "ERROR: ioctl(FREE_BLOCKS) failed: %d\n", errno);
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* esp32_himem_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct esp_himem_par param;
int ret;
int fd;
fd = open("/dev/himem", O_RDONLY);
if (fd < 0)
{
printf("Failed to open /dev/himem, error = %d!\n", errno);
return -ENODEV;
}
ret = ioctl(fd, HIMEMIOC_GET_PHYS_SIZE, &param);
if (ret < 0)
{
printf("Failed to run ioctl HIMEMIOC_GET_PHYS_SIZE, error = %d!\n",
errno);
close(fd);
return -ENOMEM;
}
ret = ioctl(fd, HIMEMIOC_GET_FREE_SIZE, &param);
if (ret < 0)
{
printf("Failed to run ioctl HIMEMIOC_GET_FREE_SIZE, error = %d!\n",
errno);
close(fd);
return -ENOMEM;
}
printf("Himem has %dKiB of memory, %dKiB of which is free.\
\nTesting the free memory...\n", (int) param.memcnt / 1024,
(int) param.memfree / 1024);
test_region(fd, &param);
printf("Done!\n");
}