int main()
{
  uint8_t mData = 0;
  uint8_t i = 0;
  uint8_t mPkt[10] = {0};
  uint8_t mCheck = 0;

    SystemInit();                              //Clock and PLL configuration

   /* Setup/Map the controller pins for LCD operation, In 4bit mode D0-D3 are P_NC(Not Connected)
               RS   RW    EN  D0   D1   D2   D3   D4    D5    D6    D7*/
    LCD_SetUp(P2_6,P2_7,P2_8,P_NC,P_NC,P_NC,P_NC,P0_24,P0_25,P0_26,P0_27);

  /* Specify the LCD type(2x16, 4x16 etc) for initialization*/
    LCD_Init(2,16);

  /* Initialize All the Four UARTs with different Baud rate */
    UART0_Init(9600);   
    UART1_Init(9600);   
  
    LCD_Clear();
    LCD_Printf("Welcome,\nAWS Network");
    DELAY_sec(3);     

	UART0_Printf("channel Zero at 9600 baud\n\r"); 

   while (1){    
    // packet format: AA   C0   PM25_Low   PM25_High   PM10_Low   PM10_High   0   0   CRC   AB
    mData = UART1_RxChar();     
    DELAY_ms(2);   
	                                // wait until packet is received
       if (mData == 0xAA){               // head1 ok
       mPkt[0] =  mData;
           mData = UART1_RxChar(); 
           if (mData == 0xc0){           // head2 ok
           mPkt[1] =  mData;
   		   mCheck = 0;
       for (i = 0; i < 6; i++){           // data recv and crc calc
       mPkt[i + 2] = UART1_RxChar(); 
       DELAY_ms(2);
       mCheck += mPkt[i + 2];
     }
        mPkt[8] = UART1_RxChar(); 
        DELAY_ms(1);
        mPkt[9] = UART1_RxChar(); 
        if (mCheck == mPkt[8]){        // crc ok
         // Serial2.flush();	 
        UART1_Init(9600);   
        Pm25 = (uint16_t)mPkt[2] | (uint16_t)(mPkt[3] << 8);
        Pm10 = (uint16_t)mPkt[4] | (uint16_t)(mPkt[5] << 8);

		finalPm25 =	 Pm25/10;
		finalPm10 =	 Pm10/10;

		UART0_Printf("PM2.5:%2f   PM10:%2f\n\r",finalPm25,finalPm10);
		LCD_Clear();
		LCD_Printf("PM2.5:%f",finalPm25);
		LCD_GoToNextLine();
		LCD_Printf("PM10:%f",finalPm10);
		
        return;
        }
      }
    }
  }
}