【AT-START-F437测评】THREADX + FILEX
THREADX 作为世界第一梯队的RTOS，如今已归微软旗下，拥有者诸多安全认证：
航空领域 – ED-12B, DO-178B, ED-109, ED-278
医学领域 – IEC-60601, IEC-62304, ISO-14971, FDA 510(k)
工业领域– IEC-61508, and others
运输领域 – CENELEC EN50128, 49CFR236, IEC-61508
该RTOS虽然不是完全免版税，但也有这个趋势，至少在STM32、NXP、瑞萨芯片上已经可以免费使用了。
FILEX做为THREADX的配套组件之一，同样拥有如上安全认证。
这几天拿AT32F437评估板测试THREADX和FILEX，记录一下使用情况。
=========================================================
首先是THREADX，不得不说微软的移植工作做的非常细致，各种常见内核都已做好适配，使用时只需要添加官方移植好的M4文件就可以。
如下图所示部分选择port/cortex_m4下的文件即可。
其中 tx_initialize_low_level.S 文件内的时钟需要配置一下：
SYSTEM_CLOCK = 288000000
SYSTICK_CYCLES = ((SYSTEM_CLOCK / 500) -1)
AT32F437主频288MHz，上面配置系统TICK为2ms。
THREADX这么一点配置基本就可以跑起来了。
==========================================================
FILEX需要移植一个文件，主要用来实现USB DISK的读写操作，USB 读写参考AT32官方例程即可。
移植内容如下：
#include <string.h>
#include "usbh_user.h"
#include "bsp.h"
#include "tx_api.h"
#include "fx_api.h"
#include "usb_core.h"
#include "usbh_msc_class.h"
#include "common.h"
/* Handle for USB Host */
extern otg_core_type otg_core_struct;
UINT _fx_partition_offset_calculate(void *partition_sector, UINT partition, ULONG *partition_start, ULONG *partition_size);
static uint8_t sector_read(void *buff, uint32_t sec_site, uint32_t amount);
static uint8_t sector_write(void *buff, uint32_t sec_site, uint32_t amount);
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] This function is the entry point to the STM32 SDIO disk driver. */
/* It relies on the STM32 peripheral library from ST.
* @param None
* @retval None
*/
VOID fx_udisk_driver(FX_MEDIA *media_ptr)
{
int32_t status;
ULONG partition_start;
ULONG partition_size;
/* before performing any operation, check the status of the SDMMC */
if(usbh_msc_is_ready(&otg_core_struct.host, 0) != MSC_OK)
{
media_ptr->fx_media_driver_status = FX_IO_ERROR;
return;
}
/* Process the driver request specified in the media control block. */
switch (media_ptr->fx_media_driver_request)
{
case FX_DRIVER_INIT:
{
if(usbh_msc_is_ready(&otg_core_struct.host, 0) == MSC_OK)
{
media_ptr->fx_media_driver_status = FX_SUCCESS;
}
else
{
media_ptr->fx_media_driver_status = FX_IO_ERROR;
}
break;
}
case FX_DRIVER_UNINIT:
{
/* Successful driver request. */
media_ptr->fx_media_driver_status = FX_SUCCESS;
break;
}
case FX_DRIVER_READ:
{
status = sector_read(
media_ptr->fx_media_driver_buffer,
media_ptr->fx_media_driver_logical_sector + media_ptr->fx_media_hidden_sectors,
media_ptr->fx_media_driver_sectors
);
if (status == 0)
media_ptr->fx_media_driver_status = FX_SUCCESS;
else
media_ptr->fx_media_driver_status = FX_IO_ERROR;
break;
}
case FX_DRIVER_WRITE:
{
status = sector_write(
media_ptr->fx_media_driver_buffer,
media_ptr->fx_media_driver_logical_sector + media_ptr->fx_media_hidden_sectors,
media_ptr->fx_media_driver_sectors
);
if (status == 0)
media_ptr->fx_media_driver_status = FX_SUCCESS;
else
media_ptr->fx_media_driver_status = FX_IO_ERROR;
break;
}
case FX_DRIVER_FLUSH:
{
/* Return driver success. */
media_ptr->fx_media_driver_status = FX_SUCCESS;
break;
}
case FX_DRIVER_ABORT:
{
/* Return driver success. */
media_ptr->fx_media_driver_status = FX_SUCCESS;
break;
}
case FX_DRIVER_BOOT_READ:
{
status = sector_read(
media_ptr->fx_media_driver_buffer,
0,
1);
if (status == 0)
{
media_ptr->fx_media_driver_status = FX_SUCCESS;
}
else
{
media_ptr->fx_media_driver_status = FX_IO_ERROR;
break;
}
/* Check if the sector 0 is the actual boot sector, otherwise calculate the offset into it.
Please note that this should belong to higher level of MW to do this check and it is here
as a temporary work solution */
partition_start = 0;
status = _fx_partition_offset_calculate(media_ptr->fx_media_driver_buffer, 0,
&partition_start, &partition_size);
/* Check partition read error. */
if (status)
{
/* Unsuccessful driver request. */
media_ptr->fx_media_driver_status = FX_IO_ERROR;
return;
}
/* Now determine if there is a partition... */
if (partition_start)
{
/* Yes, now lets read the actual boot record. */
status = sector_read(
media_ptr->fx_media_driver_buffer,
partition_start,
1);
/* Check status of SDIO Read. */
if (status != 0)
{
/* Unsuccessful driver request. */
media_ptr->fx_media_driver_status = FX_IO_ERROR;
return;
}
}
/* Successful driver request. */
media_ptr->fx_media_driver_status = FX_SUCCESS;
break;
}
case FX_DRIVER_BOOT_WRITE:
{
status = sector_write(
media_ptr->fx_media_driver_buffer,
0,
1
);
if (status == 0)
media_ptr->fx_media_driver_status = FX_SUCCESS;
else
media_ptr->fx_media_driver_status = FX_IO_ERROR;
break;
}
default:
{
media_ptr->fx_media_driver_status = FX_IO_ERROR;
break;
}
}
}
uint8_t sector_read(void *buff, uint32_t sec_site, uint32_t count)
{
usb_sts_type status;
status = usbh_msc_read(&otg_core_struct.host, sec_site, count, buff, 0);
if(status == USB_OK)
return 0;
return 1;
}
uint8_t sector_write(void *buff, uint32_t sec_site, uint32_t count)
{
usb_sts_type status;
status = usbh_msc_write(&otg_core_struct.host, sec_site, count, (uint8_t *)buff, 0);
if(status == USB_OK)
return 0;
return 1;
}
下面是测试结果：
烧录程序运行后，插入U盘开始U盘操作。串口显示内容如下：
U盘操作完后接入电脑，多出两个文件是本测试程序创建的：
一个CSV表格，一个PDF文件。
表格文件内容：
PDF文件比较长，截取一部分如下：
这就完了，微软出品的软件确实比较容易上手。系统默认配置，底层移植量非常少就能跑起来。后面可以细致研究OS和文件系统的各个API用法了。
代码托管在GITEE:
https://toscode.gitee.com/aple_sun/at32f437-start-threadx
|
打赏榜单
ArterySW 打赏了 20.00 元 2023-01-06
理由：【AT-START-F437测评】THREADX FILEX，作品优秀。
 共1人点赞
|
楼主
标题置顶
标题高亮
给楼主点个赞