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    【XR806开发板试用】使用FDCM操作Flash记录开机次数

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    xr806开发板试用
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    • F
      funfulzhao LV 3 最后由 编辑

      一、寻找系统分配的自定义用户数据地址
      （1）XR806的Flash布局
      d9b423b2-e419-447a-a36e-818449e30c25-image.png
      如图1所示，FLASH的布局有两种：
      1、没有开启OTA模式；Image1+Padding+Sysinfo
      2、开启OTA模式；Image1+Padding+Sysinfo+OTA area +Image2 +Padding
      fa07eb9a-2cee-4fb6-ad75-f861b6248859-image.png 9fad5ccc-1b5a-4488-a518-24ccb92dee9f-image.png

      如图2/3，当前工程采用wlan_ble_demo,未开启OTA模式，
      查看device/xradio/xr806/xr_skylark/project/demo/wlan_ble_demo/gcc/Makefile文件，Flash的cfg文件为IMAGE_CFG := ./image_wlan_ble.cfg
      5b720328-f4b2-4752-9cc2-003f46d192ec-image.png
      （2）查看Sysinfo的地址
      Sysinfo区域是一段用于存储用户自定义数据的区域，紧跟在Image1区域后面，通过device/xradio/xr806/xr_skylark/project/demo/wlan_ble_demo/prj_config.h得知Sysinfo的地址和长度
      368e49bc-fca2-4c5a-b46e-901cfe7cf93d-image.png
      二、使用FDCM操作Sysinfo区域
      FDCM模块与SDK中其他模块之间的关系如下图所示。Sysinfo，OTA和IMAGE等模块中都有使用到FDCM模块接口，保存其对应的数据。
      bf44d439-26a6-4dd9-aba5-63f0763e2202-image.png
      注意：（1）FDCM操作的区域需要与Flash可擦除的Block对齐；
      （2）FDCM模块管理的Flash区域不要与其他模块（如Image）使用的Flash区域产生冲突，避免相互影响
      （3）用FDCM模块管理的Flash区域必须与Flash可擦除的block对齐，即区域起始地址与Flash擦除Block的边缘对齐，并且区域大小为Flash可擦除最小Block大小的整数倍
      三、实现代码

      #include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include "ohos_init.h"
#include "kernel/os/os.h"
#include "sys/fdcm.h"
#include "common/framework/platform_init.h"
#define FLASH_DEVICE_NUM         0
#define IoT_FLASH 1
#define FDCM_FLASH_START_ADDR  (1536*1024)
#define FDCM_SIZE   (4*1024)
static OS_Thread_t g_main_thread;

static void MainThread(void *arg)
{
   fdcm_handle_t *fdcm;
   uint8_t write_buf[100];
   uint8_t read_buf[100];

   fdcm = fdcm_open(FLASH_DEVICE_NUM, FDCM_FLASH_START_ADDR, FDCM_SIZE);
   if (fdcm == NULL) {
	printf("fdcm open fail.\n");
	return ;
   }
   printf("fdcm open success, flash addr:0x%x, flash size:%d\n", FDCM_FLASH_START_ADDR, FDCM_SIZE);
   printf("we can use fdcm to save info to flash.\n");
   fdcm_read(fdcm, &read_buf, sizeof(read_buf));   
   if(strlen(read_buf)==0)
   {
      printf("first power on \r\n");
      sprintf((char *)write_buf,"%d",1);
      fdcm_write(fdcm, &write_buf, sizeof(write_buf));
   }
   else
   {   
       printf("read_buf = %d\r\n",atoi((char *)read_buf));  
       sprintf(write_buf,"%d",atoi((char *)read_buf)+1);
       printf("write_buf = %d\r\n",atoi((char *)write_buf));
       fdcm_write(fdcm, &write_buf, sizeof(write_buf));
   } 
   LOS_Msleep(10);
   fdcm_read(fdcm, &read_buf, sizeof(read_buf));
   LOS_Msleep(20);
   printf("Power-on times:%s\r\n",read_buf);
   fdcm_close(fdcm);
}

void FlashTestMain(void)
{
	printf("FDCM Flash Test \r\n");
	if (OS_ThreadCreate(&g_main_thread, "MainThread", MainThread, NULL,
			    OS_THREAD_PRIO_APP, 4 * 1024) != OS_OK) {
		printf("[ERR] Create MainThread Failed\n");
	}
}

SYS_RUN(FlashTestMain);

      四：实验现象展示

      ====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 8
write_buf = 9
Power-on times:9
hello world!
====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 9
write_buf = 10
Power-on times:10
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 10
write_buf = 11
Power-on times:11

      五：遗留问题
      （1）Image的max_size为1532K，设置FDCM的起始地址为（15321024）时，本次开机的写入读取未报错，但是数据未保存；FDCM的起始地址改为（15361024），则正常。
      六:参考
      （1）https://harmonyos.51cto.com/posts/8225
      （2）《XR806_FDCM中间件_开发指南》
      （3）《XR806_Flash布局方案_开发指南》

      Z 1 条回复 最后回复 回复 引用 分享 0
      • Z
        zhugx LV 5 @funfulzhao 最后由 编辑

        @funfulzhao 在 【XR806开发板试用】使用FDCM操作Flash记录开机次数 中说：

        （2）《XR806_FDCM中间件_开发指南》
        （3）《XR806_Flash布局方案_开发指南》

        2 和3 从哪里能下载到呢

        F 1 条回复 最后回复 回复 引用 分享 0
        • F
          funfulzhao LV 3 @zhugx 最后由 编辑

          @funfulzhao 在 【XR806开发板试用】使用FDCM操作Flash记录开机次数 中说：

          一、寻找系统分配的自定义用户数据地址
          （1）XR806的Flash布局
          d9b423b2-e419-447a-a36e-818449e30c25-image.png
          如图1所示，FLASH的布局有两种：
          1、没有开启OTA模式；Image1+Padding+Sysinfo
          2、开启OTA模式；Image1+Padding+Sysinfo+OTA area +Image2 +Padding
          fa07eb9a-2cee-4fb6-ad75-f861b6248859-image.png 9fad5ccc-1b5a-4488-a518-24ccb92dee9f-image.png

          如图2/3，当前工程采用wlan_ble_demo,未开启OTA模式，
          查看device/xradio/xr806/xr_skylark/project/demo/wlan_ble_demo/gcc/Makefile文件，Flash的cfg文件为IMAGE_CFG := ./image_wlan_ble.cfg
          5b720328-f4b2-4752-9cc2-003f46d192ec-image.png
          （2）查看Sysinfo的地址
          Sysinfo区域是一段用于存储用户自定义数据的区域，紧跟在Image1区域后面，通过device/xradio/xr806/xr_skylark/project/demo/wlan_ble_demo/prj_config.h得知Sysinfo的地址和长度
          368e49bc-fca2-4c5a-b46e-901cfe7cf93d-image.png
          二、使用FDCM操作Sysinfo区域
          FDCM模块与SDK中其他模块之间的关系如下图所示。Sysinfo，OTA和IMAGE等模块中都有使用到FDCM模块接口，保存其对应的数据。
          bf44d439-26a6-4dd9-aba5-63f0763e2202-image.png
          注意：（1）FDCM操作的区域需要与Flash可擦除的Block对齐；
          （2）FDCM模块管理的Flash区域不要与其他模块（如Image）使用的Flash区域产生冲突，避免相互影响
          （3）用FDCM模块管理的Flash区域必须与Flash可擦除的block对齐，即区域起始地址与Flash擦除Block的边缘对齐，并且区域大小为Flash可擦除最小Block大小的整数倍
          三、实现代码

          #include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include "ohos_init.h"
#include "kernel/os/os.h"
#include "sys/fdcm.h"
#include "common/framework/platform_init.h"
#define FLASH_DEVICE_NUM         0
#define IoT_FLASH 1
#define FDCM_FLASH_START_ADDR  (1536*1024)
#define FDCM_SIZE   (4*1024)
static OS_Thread_t g_main_thread;

static void MainThread(void *arg)
{
   fdcm_handle_t *fdcm;
   uint8_t write_buf[100];
   uint8_t read_buf[100];

   fdcm = fdcm_open(FLASH_DEVICE_NUM, FDCM_FLASH_START_ADDR, FDCM_SIZE);
   if (fdcm == NULL) {
	printf("fdcm open fail.\n");
	return ;
   }
   printf("fdcm open success, flash addr:0x%x, flash size:%d\n", FDCM_FLASH_START_ADDR, FDCM_SIZE);
   printf("we can use fdcm to save info to flash.\n");
   fdcm_read(fdcm, &read_buf, sizeof(read_buf));   
   if(strlen(read_buf)==0)
   {
      printf("first power on \r\n");
      sprintf((char *)write_buf,"%d",1);
      fdcm_write(fdcm, &write_buf, sizeof(write_buf));
   }
   else
   {   
       printf("read_buf = %d\r\n",atoi((char *)read_buf));  
       sprintf(write_buf,"%d",atoi((char *)read_buf)+1);
       printf("write_buf = %d\r\n",atoi((char *)write_buf));
       fdcm_write(fdcm, &write_buf, sizeof(write_buf));
   } 
   LOS_Msleep(10);
   fdcm_read(fdcm, &read_buf, sizeof(read_buf));
   LOS_Msleep(20);
   printf("Power-on times:%s\r\n",read_buf);
   fdcm_close(fdcm);
}

void FlashTestMain(void)
{
	printf("FDCM Flash Test \r\n");
	if (OS_ThreadCreate(&g_main_thread, "MainThread", MainThread, NULL,
			    OS_THREAD_PRIO_APP, 4 * 1024) != OS_OK) {
		printf("[ERR] Create MainThread Failed\n");
	}
}

SYS_RUN(FlashTestMain);

          四：实验现象展示

          ====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 8
write_buf = 9
Power-on times:9
hello world!
====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 9
write_buf = 10
Power-on times:10
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
====================================================================
	Hello! OpenHarmony!
	System tag : OpenHarmony 1.1.2_LTS
====================================================================
	
use default flash chip mJedec 0x0
[FD I]: mode: 0x10, freq: 96000000Hz, drv: 0
[FD I]: jedec: 0x0, suspend_support: 1
mode select:e

wlan information ===================================================
firmware:
    version : R0-XR_C07.08.52.65_02.84 May 27 2021 11:41:33-Y02.84 
    buffer  : 8
driver:
    version : XR_V02.05
mac address:
    in use        : cc:6e:48:3e:0d:01
    in use        : cc:6e:48:3e:0d:02
====================================================================

wlan mode:a
[VFS INF] LittleFS mount success.

platform information ===============================================
XR806 SDK v1.2.0  Jan 23 2022 09:49:52

heap space [0x223230, 0x24bc00), size 166352

cpu  clock 160000000 Hz
HF   clock  40000000 Hz

sdk option:
    XIP           : enable
    INT LF OSC    : enable
    SIP flash     : enable

mac address:
    efuse         : 80:74:84:05:bb:f9
    in use        : cc:6e:48:3e:0d:01
====================================================================

FDCM Flash Test 
Wifi Test Start

console init success
fdcm open success, flash addr:0x180000, flash size:4096
hiview init success.hello world!
we can use fdcm to save info to flash.
read_buf = 10
write_buf = 11
Power-on times:11

          五：遗留问题
          （1）Image的max_size为1532K，设置FDCM的起始地址为（15321024）时，本次开机的写入读取未报错，但是数据未保存；FDCM的起始地址改为（15361024），则正常。
          六:参考
          （1）https://harmonyos.51cto.com/posts/8225
          （2）《XR806_FDCM中间件_开发指南》
          （3）《XR806_Flash布局方案_开发指南》
          XR806软件类文档地址:https://open.allwinnertech.com/#/doc?menuID=2
          文档中心
          f1ee350f-c648-440a-a2cf-ed3e50a9f072-image.png

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