1

packet.md

@@ -28,13 +28,24 @@
 
 返回示例 `01 05 10 01 FE`
 
-### 查询超声波距离 `0x11`
+### 查询 SPI Flash 挂载状态 `0x11`
 
 查询示例 `00 04 11 FF`
 
+| 返回数据 | 含义 |
+| -------- | ---- |
+| 01       | 已挂载 |
+| 00       | 未挂载 |
+
+返回示例 `01 05 11 01 FE`
+
+### 查询超声波距离 `0x12`
+
+查询示例 `00 04 12 FF`
+
 返回一个 4 字节浮点数，表示距离，单位 m
 
-返回示例 `01 08 11 距离3 距离2 距离1 距离0 FE`
+返回示例 `01 08 12 距离3 距离2 距离1 距离0 FE`
 
 ## 控制
 

src/main.cpp

@@ -3,6 +3,7 @@
 #include <BLEServer.h>
 #include <BLEUtils.h>
 #include <BLE2902.h>
+#include <SPIFFS.h>
 #include "consts.h"
 
 // 使用 2 片 TB6612 控制 4 个电机
@@ -16,7 +17,8 @@
 
 // 指令定义
 #define CMD_GET_BT_STATUS 0x10
-#define CMD_GET_DISTANCE 0x11
+#define CMD_GET_SPIFFS_STATUS 0x11
+#define CMD_GET_DISTANCE 0x12
 #define CMD_MOTOR_MOVE_CONTROL 0x20
 #define CMD_MOTOR_ROTATE_CONTROL 0x21
 
@@ -121,6 +123,48 @@ float getDistance()
   return distance;
 }
 
+class CarStorage
+{
+public:
+  static bool isMounted;
+
+  static void init()
+  {
+    if (!SPIFFS.begin(true))
+    {
+      Serial.println("SPIFFS Mount Failed");
+      isMounted = false;
+    }
+    else
+      isMounted = true;
+  }
+
+  static unsigned int getSensitivity()
+  {
+    if (!isMounted)
+      return 0xFF;
+
+    File file = SPIFFS.open("/sensitivity.txt", "r");
+    if (!file)
+      return 0xFF;
+
+    String sensitivity = file.readStringUntil('\n');
+    file.close();
+
+    return sensitivity.toInt();
+  }
+
+  static void setSensitivity(unsigned int sensitivity)
+  {
+    if (!isMounted)
+      return;
+
+    File file = SPIFFS.open("/sensitivity.txt", "w");
+    file.println(sensitivity);
+    file.close();
+  }
+};
+
 void setup()
 {
   // 初始化串口
@@ -148,6 +192,9 @@ void setup()
   pService->start();
   pServer->getAdvertising()->start();
 
+  // 初始化 EEPROM
+  CarStorage::init();
+
   // 设置引脚模式
   pinMode(STATUS_LED, OUTPUT);
   digitalWrite(STATUS_LED, HIGH);
@@ -198,6 +245,18 @@ void handleSerialPacket(uint8_t *packet, int length, BLECharacteristic &characte
     characteristic.notify();
     break;
 
+  case CMD_GET_SPIFFS_STATUS:
+    Serial.println("CMD_GET_SPIFFS_STATUS");
+    // 构建响应数据
+    buffer[0] = PACKET_T_HEAD;
+    buffer[1] = 0x05;
+    buffer[2] = CMD_GET_SPIFFS_STATUS;
+    buffer[3] = (uint8_t)(CarStorage::isMounted ? 0x01 : 0x00);
+    buffer[4] = PACKET_T_TAIL;
+    characteristic.setValue(buffer, 5);
+    characteristic.notify();
+    break;
+
   case CMD_GET_DISTANCE:
     distance = getDistance();
     Serial.println("CMD_GET_DISTANCE, distance: " + String(distance));