串口数据计算累加和改为无符号数

serial_imu_hat_6dof/src/proc_serial_data.cpp

@@ -190,7 +190,7 @@ void parse_serialData(char chr)
     static unsigned char chrCnt = 0;
     signed short sData[4]; //save 8 Byte valid info
     unsigned char i = 0;
-    char frameSum = 0;
+    unsigned char frameSum = 0;
 
     chrBuf[chrCnt++] = chr; //保存当前字节,字节计数加1