1. MUC Coursework ● Deadline: 16 April ● Add all files to a folder, and send a compressed version of the folder (.zip or.tar) to niki@dcs.bbk.ac.uk by 26 March niki@dcs.bbk.ac.uk ● The compressed version should be named as follows: Name_Surname.zip or Name_Surname.tar ● Add any comments about your coursework (brief description of files, problems encountered, etc.) into a file called intro.txt

2. Coursework (1/2) ● Problem  2n+1 nodes, one gateway (with an ID of 0), n nodes with odd IDs, n nodes with even IDs  Nodes with odd IDs collect light readings, those with even IDs collect temperature readings  At every period ● the gateway asks the readings of the 2n nodes ● the nodes collect the readings and send them back to the gateway ● the gateway computes the average light and temperature

3. Coursework (2/2) ● The gateway  Computes the average light and temperature at the beginning of each period (of five seconds)  Sends the average light and temperature in a single packet to the UART ● The other nodes  Send their readings after a random interval, so that the messages from different nodes are not sent at the same time

4. Design ● The gateway  has a PeriodTimer  sends BroadcastMsg  receives LightMsg and TempMsg  sends UartMsg ● The other nodes  have a Light or Temp sensor  receive BroadcastMsg  have a DelayTimer  send LightMsg or TempMsg

5. Architecture CourseworkCCourseworkM StdControl TimerLeds SendMsg ADCReceiveMsgRandom LedsC TimerC Random LFSR DemoSensorCTempGenericComm Main Makefile

6. Hints (1/2) ● if (TOS_LOCAL_ADDRESS%2==0) { /* even node */ } else { /* odd node */ } ● You cannot pass parameters to tasks, you need to use global variables ● Write a specific task for each message to send ● You can send to the serial port using TOS_UART_ADDRESS (and you can see those messages using export DBG=uart )

7. Hints (2/2) ● The gateway needs four variables to compute the averages  sumLight  numberLight  sumTemp  numberTemp ● The nodes need only one variable  lightValue or tempValue