2.2 Firmware

From Advanced Software Framework (ASF) 3.51, do all the measurements with example applications. The following is the list of applications used for each of the Mi-Wi network topology:

For Mi-Wi Mesh, Mi-Wi Mesh secured end device WSN demo application – SAM R30 is used.

For Mi-Wi P2P, Mi-Wi P2P simple example application – SAM R30 is used.

The following is the list of modifications from the default application:

1. ENABLE_SLEEP_FEATURE is added as a symbol in the Toolchain configuration (Atmel Studio>Project>Properties>Toolchain>ARM/GNU C Compiler>Symbols).
2. Disable ENABLE_CONSOLE in the miwi_config.h file.

   //#define ENABLE_CONSOLE

3. For the profiling scenario to transmit data to a peer device with maximum payload, in p2p_demo.c file, the run_p2p_demo() method is modified. The following code provides details about the modification of some specific lines in the code:

   uint8_t PressedButton = ButtonPressed();
   switch( PressedButton ){         
   case 1:
   {
   /*******************************************************************/
   // Button 1 pressed. We need to send out the bitmap of word "MiWi". 
   /*******************************************************************/ 
   uint16_t broadcastAddress = 0xFFFF;
   
   bool mac_ack_status;
   
   uint8_t payload[76]={0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0xB2,0xB2,0x20,0x20,0xB2,0xB2,0xB2,0xB2,0x0D,0xB2,0x20,0x20,0xB2,0xB2,0xB2};
   
   mac_ack_status = MiApp_SendData(SHORT_ADDR_LEN, (uint8_t *)&broadcastAddress, 76, (uint8_t *)payload, msghandledemo++, true, dataConfcb);
   
   if (mac_ack_status)
   {
   /* Update the bitmap count */
   TxSynCount++;
   }
   }            
   } 
   break;

4. The transmit power of the SAM R30 is set at the maximum level for the North American band. This is done in the phyInit() method of the phy.c file. The following is the modified line of code:

   phyWriteRegister(PHY_TX_PWR_REG, 0xC0);

5. The following lines of code are commented out in file task.c under the method Connection_confirm(). The user must do this to avoid a hardfault, as the Universal Asynchronous Receiver/Transmitter (UART) cannot be initialized due to undefining of the ENABLE_CONSOLE build switch for optimized power consumption.

   //    printf("\r\nStarted Wireless Communication on Channel ");
   //    printf("%u",currentChannel);
   //    printf("\r\n");

For Mi-Wi Star, Mi-Wi Star simple example application – SAM R30 is used.