创建目录,挂载块设备"font"到 DFS 目录/fal/test中,尝试写文件（未成功）

Day1/note.md

@@ -53,4 +53,5 @@ for item in list:
         group = group + SConscript(os.path.join(item, 'SConscript'))
 
 Return('group')
-```
+```
+[RSOC问题汇总连接](https://docs.qq.com/doc/DY2VrUlpuRWlRUkdI)

Day5/mqtt.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <string.h>
 #include "aht10.h"
+#include <dfs_posix.h>
 
 char DEMO_PRODUCT_KEY[IOTX_PRODUCT_KEY_LEN + 1] = {0};
 char DEMO_DEVICE_NAME[IOTX_DEVICE_NAME_LEN + 1] = {0};
@@ -49,6 +50,7 @@ static void example_message_arrive(void *pcontext, void *pclient, iotx_mqtt_even
             /* print topic name and topic message */
             EXAMPLE_TRACE("Message Arrived:");
             rt_pin_mode(GPIO_LED_R, PIN_MODE_OUTPUT);
+            //topic_info->payload 为发送的内容，可以据此设置命令
             if(rt_pin_read(GPIO_LED_R) == PIN_HIGH)
             {
                 // rt_kprintf("LED_R should be ON\n");
@@ -94,13 +96,40 @@ static int example_subscribe(void *handle)
     HAL_Free(topic);
     return 0;
 }
+void make_file(char *String)
+{
+    //文件描述符
+    int fd;
 
-        char tmp[256];
+    //用只写方式打开文件,如果没有该文件,则创建一个文件
+    fd = open("/fal/test/Data.txt", O_APPEND | O_CREAT);
+
+    //如果打开成功
+    if (fd >= 0)
+    {
+        //写入文件
+        write(fd, String, sizeof(String));
+
+        rt_kprintf("Write done.\n");
+
+        //关闭文件
+        close(fd);
+    }
+    else
+    {
+        rt_kprintf("File Open Fail.\n");
+    }
+    return;
+}
+char tmp[256];
+int cnt = 0;
 void tmp_payload(void)
 {
      // 读取温湿度值
         Humi = aht10_read_humidity(Dev);
         Temp = aht10_read_temperature(Dev);
+        sprintf(tmp, "Temp：%f ; Humi：%f ; Count： %d", Temp, Humi,++cnt);
+        make_file(tmp);
         sprintf(tmp, "{\"params\":{\"temperature\":%.2f,\"humidity\":%.2f}}", Temp, Humi);
         rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,tmp);
         return;

board/ports/drv_filesystem.c

@@ -84,7 +84,39 @@ static int onboard_fal_mount(void)
             LOG_D("You should create a filesystem on the block device first!");
         }        
     }
+    
+    int ret;
 
+    /* 创建目录 */
+    ret = mkdir("/fal/test", 0x777);
+    if (ret < 0)
+    {
+        /* 创建目录失败 */
+        rt_kprintf("dir error!\n");
+    }
+    else
+    {
+        /* 创建目录成功 */
+        rt_kprintf("mkdir ok!\n");
+    }
+    /* 挂载块设备"font"到 DFS 目录/fal/test中 */
+    if (dfs_mount("font", "/fal/test", "elm", 0, 0) == 0)
+    {
+        LOG_I("font initialized!");
+    }
+    else
+    {
+        dfs_mkfs("elm", "font");
+        if (dfs_mount("font", "/fal/test", "elm", 0, 0) == 0)
+        {
+            LOG_I("font initialized!");
+        }
+        else
+        {
+            LOG_E("Failed to initialize font!");
+            LOG_D("You should create a filesystem(font) on the block device first!");
+        }        
+    }
     return RT_EOK;
 }
 #endif /*BSP_USING_FLASH_FATFS*/