"完成了433多数据同时接收的时候的冲突问题，解决了网络未连接会卡死整个程序的问题“

Core/Src/main.c

@@ -125,10 +125,10 @@ void RF433_SendPacket(uint8_t type, const uint8_t *payload, uint8_t len)
     uint16_t frame_idx = 0;
     uint8_t checksum = 0;
 
-    frame[frame_idx++] = PROTO_START_BYTE;      // AA
-    frame[frame_idx++] = type;                  // TYPE
-    frame[frame_idx++] = (uint8_t)(len + 1);    // LEN (ID + Payload)
-    frame[frame_idx++] = MY_DEVICE_ID;          // ID
+    frame[frame_idx++] = PROTO_START_BYTE;          // AA
+    frame[frame_idx++] = type;                      // TYPE
+    frame[frame_idx++] = (uint8_t)(len + 1 + 1);    // LEN (ID + Payload + SUM)
+    frame[frame_idx++] = MY_DEVICE_ID;              // ID
 
     if (len > 0 && payload != NULL) {
         memcpy(&frame[frame_idx], payload, len);