prithvi ganesh / Mbed 2 deprecated ESE350-Whack-a-Mole

For master node of whack a mole program

Dependencies:   mbed

Fork of ESE350-Whack-a-Mole by Eric Berdinis

whack_master.cpp@2:73c0d4f0ff5c, 2015-10-18 (annotated)

Committer:
prithviganeshk
Date:
Sun Oct 18 21:08:07 2015 +0000
Revision:
2:73c0d4f0ff5c
Parent:
1:691460a19f54
Child:
3:4f09529d391b
whack a mole master final working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
prithviganeshk 1:691460a19f54 1 #include "mbed.h"
prithviganeshk 1:691460a19f54 2 #include "MRF24J40.h"
prithviganeshk 1:691460a19f54 3 #include <string>
prithviganeshk 1:691460a19f54 4
prithviganeshk 1:691460a19f54 5
prithviganeshk 1:691460a19f54 6 // RF tranceiver to link with handheld.
prithviganeshk 1:691460a19f54 7 MRF24J40 mrf(p11, p12, p13, p14, p21);
prithviganeshk 1:691460a19f54 8
prithviganeshk 1:691460a19f54 9 // LEDs you can treat these as variables (led2 = 1 will turn led2 on!)
prithviganeshk 1:691460a19f54 10 DigitalOut led1(LED1);
prithviganeshk 1:691460a19f54 11 DigitalOut led2(LED2);
prithviganeshk 1:691460a19f54 12 // Timer
prithviganeshk 1:691460a19f54 13 Timer timer;
prithviganeshk 1:691460a19f54 14
prithviganeshk 1:691460a19f54 15 // Serial port for showing RX data.
prithviganeshk 1:691460a19f54 16 Serial pc(USBTX, USBRX);
prithviganeshk 1:691460a19f54 17
prithviganeshk 1:691460a19f54 18 // Used for sending and receiving
prithviganeshk 1:691460a19f54 19 char txBuffer[128];
prithviganeshk 1:691460a19f54 20 char rxBuffer[128];
prithviganeshk 1:691460a19f54 21 int rxLen;
prithviganeshk 1:691460a19f54 22
prithviganeshk 1:691460a19f54 23 //***************** Do not change these methods (please) *****************//
prithviganeshk 1:691460a19f54 24
prithviganeshk 1:691460a19f54 25 /**
prithviganeshk 1:691460a19f54 26 * Receive data from the MRF24J40.
prithviganeshk 1:691460a19f54 27 *
prithviganeshk 1:691460a19f54 28 * @param data A pointer to a char array to hold the data
prithviganeshk 1:691460a19f54 29 * @param maxLength The max amount of data to read.
prithviganeshk 1:691460a19f54 30 */
prithviganeshk 1:691460a19f54 31 int rf_receive(char *data, uint8_t maxLength)
prithviganeshk 1:691460a19f54 32 {
prithviganeshk 1:691460a19f54 33 uint8_t len = mrf.Receive((uint8_t *)data, maxLength);
prithviganeshk 1:691460a19f54 34 uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
prithviganeshk 1:691460a19f54 35
prithviganeshk 1:691460a19f54 36 if(len > 10) {
prithviganeshk 1:691460a19f54 37 //Remove the header and footer of the message
prithviganeshk 1:691460a19f54 38 for(uint8_t i = 0; i < len-2; i++) {
prithviganeshk 1:691460a19f54 39 if(i<8) {
prithviganeshk 1:691460a19f54 40 //Make sure our header is valid first
prithviganeshk 1:691460a19f54 41 if(data[i] != header[i])
prithviganeshk 1:691460a19f54 42 return 0;
prithviganeshk 1:691460a19f54 43 } else {
prithviganeshk 1:691460a19f54 44 data[i-8] = data[i];
prithviganeshk 1:691460a19f54 45 }
prithviganeshk 1:691460a19f54 46 }
prithviganeshk 1:691460a19f54 47
prithviganeshk 1:691460a19f54 48 //pc.printf("Received: %s length:%d\r\n", data, ((int)len)-10);
prithviganeshk 1:691460a19f54 49 }
prithviganeshk 1:691460a19f54 50 return ((int)len)-10;
prithviganeshk 1:691460a19f54 51 }
prithviganeshk 1:691460a19f54 52
prithviganeshk 1:691460a19f54 53 /**
prithviganeshk 1:691460a19f54 54 * Send data to another MRF24J40.
prithviganeshk 1:691460a19f54 55 *
prithviganeshk 1:691460a19f54 56 * @param data The string to send
prithviganeshk 1:691460a19f54 57 * @param maxLength The length of the data to send.
prithviganeshk 1:691460a19f54 58 * If you are sending a null-terminated string you can pass strlen(data)+1
prithviganeshk 1:691460a19f54 59 */
prithviganeshk 1:691460a19f54 60 void rf_send(char *data, uint8_t len)
prithviganeshk 1:691460a19f54 61 {
prithviganeshk 1:691460a19f54 62 //We need to prepend the message with a valid ZigBee header
prithviganeshk 1:691460a19f54 63 uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
prithviganeshk 1:691460a19f54 64 uint8_t *send_buf = (uint8_t *) malloc( sizeof(uint8_t) * (len+8) );
prithviganeshk 1:691460a19f54 65
prithviganeshk 1:691460a19f54 66 for(uint8_t i = 0; i < len+8; i++) {
prithviganeshk 1:691460a19f54 67 //prepend the 8-byte header
prithviganeshk 1:691460a19f54 68 send_buf[i] = (i<8) ? header[i] : data[i-8];
prithviganeshk 1:691460a19f54 69 }
prithviganeshk 1:691460a19f54 70 //pc.printf("Sent: %s\r\n", send_buf+8);
prithviganeshk 1:691460a19f54 71
prithviganeshk 1:691460a19f54 72 mrf.Send(send_buf, len+8);
prithviganeshk 1:691460a19f54 73 free(send_buf);
prithviganeshk 1:691460a19f54 74 }
prithviganeshk 1:691460a19f54 75
prithviganeshk 1:691460a19f54 76
prithviganeshk 1:691460a19f54 77 //***************** You can start coding here *****************//
prithviganeshk 1:691460a19f54 78 int main (void)
prithviganeshk 1:691460a19f54 79 {
prithviganeshk 1:691460a19f54 80
prithviganeshk 1:691460a19f54 81 //Set the Number of slaves
prithviganeshk 1:691460a19f54 82 int slaves = 2;
prithviganeshk 1:691460a19f54 83
prithviganeshk 1:691460a19f54 84 //Channels of the nodes
prithviganeshk 1:691460a19f54 85 //channel1 = 15; //channel of the first node
prithviganeshk 1:691460a19f54 86 //channel2 = 14; //channel of the first node
prithviganeshk 1:691460a19f54 87 uint8_t channel;
prithviganeshk 1:691460a19f54 88
prithviganeshk 1:691460a19f54 89 //Set the Count to 10
prithviganeshk 1:691460a19f54 90 int count = 0;
prithviganeshk 2:73c0d4f0ff5c 91 float begin = 0;
prithviganeshk 2:73c0d4f0ff5c 92 float end = 0;
prithviganeshk 2:73c0d4f0ff5c 93 float diff = 0;
prithviganeshk 2:73c0d4f0ff5c 94 float tdiff = 0;
prithviganeshk 1:691460a19f54 95
prithviganeshk 1:691460a19f54 96 //Start the timer
prithviganeshk 1:691460a19f54 97 timer.start();
prithviganeshk 1:691460a19f54 98
prithviganeshk 1:691460a19f54 99 //Set the yes and no arrays
prithviganeshk 1:691460a19f54 100 char yes[] = "y";
prithviganeshk 1:691460a19f54 101 char no[] = "n";
prithviganeshk 1:691460a19f54 102
prithviganeshk 1:691460a19f54 103 while(count < 10) {
prithviganeshk 1:691460a19f54 104
prithviganeshk 1:691460a19f54 105 //Send message to random node
prithviganeshk 1:691460a19f54 106
prithviganeshk 1:691460a19f54 107 //Calculate random number
prithviganeshk 1:691460a19f54 108 //srand(time(0));
prithviganeshk 2:73c0d4f0ff5c 109 channel = (rand()%(slaves)) + 14; //set to minimum channel
prithviganeshk 2:73c0d4f0ff5c 110 //channel = 15;
prithviganeshk 1:691460a19f54 111
prithviganeshk 1:691460a19f54 112 //Set the Channel to the random node selected
prithviganeshk 1:691460a19f54 113 mrf.SetChannel(channel);
prithviganeshk 1:691460a19f54 114
prithviganeshk 1:691460a19f54 115 //Send message to the random slave and start timer
prithviganeshk 1:691460a19f54 116 strcpy(txBuffer, "set");
prithviganeshk 1:691460a19f54 117 rf_send(txBuffer, strlen(txBuffer) + 1);
prithviganeshk 1:691460a19f54 118 //Switch on the Led when sending data
prithviganeshk 1:691460a19f54 119 led2 = 1;
prithviganeshk 1:691460a19f54 120 printf("Sending signal to channel %u \n", channel);
prithviganeshk 2:73c0d4f0ff5c 121 begin = timer.read_ms();
prithviganeshk 1:691460a19f54 122
prithviganeshk 1:691460a19f54 123 //Wait for reply from the slave
prithviganeshk 1:691460a19f54 124
prithviganeshk 1:691460a19f54 125 while(1){
prithviganeshk 1:691460a19f54 126
prithviganeshk 1:691460a19f54 127 rxLen = rf_receive(rxBuffer, 128);
prithviganeshk 1:691460a19f54 128
prithviganeshk 1:691460a19f54 129 if(rxLen > 0) {
prithviganeshk 1:691460a19f54 130
prithviganeshk 1:691460a19f54 131 //Calculate time difference
prithviganeshk 2:73c0d4f0ff5c 132 end = timer.read_ms();
prithviganeshk 1:691460a19f54 133 diff = end - begin;
prithviganeshk 2:73c0d4f0ff5c 134 tdiff += (diff / 1000);
prithviganeshk 1:691460a19f54 135
prithviganeshk 1:691460a19f54 136 //Switch off Led to indicate received data
prithviganeshk 1:691460a19f54 137 led2 = 0;
prithviganeshk 1:691460a19f54 138
prithviganeshk 1:691460a19f54 139 //Check if mole was pressed or not
prithviganeshk 1:691460a19f54 140 pc.printf("Received: %s\r\n", rxBuffer);
prithviganeshk 1:691460a19f54 141
prithviganeshk 1:691460a19f54 142 //If it was pressed - increment the count
prithviganeshk 1:691460a19f54 143 if(strcmp (yes,rxBuffer) == 0){
prithviganeshk 1:691460a19f54 144 pc.printf("pressed\n");
prithviganeshk 1:691460a19f54 145 count++;
prithviganeshk 1:691460a19f54 146 }
prithviganeshk 1:691460a19f54 147 //If it was not pressed - dont alter the count
prithviganeshk 1:691460a19f54 148 else if(strcmp (no,rxBuffer) == 0){
prithviganeshk 1:691460a19f54 149 pc.printf("Not pressed\n");
prithviganeshk 1:691460a19f54 150 }
prithviganeshk 1:691460a19f54 151
prithviganeshk 1:691460a19f54 152 break;
prithviganeshk 1:691460a19f54 153
prithviganeshk 1:691460a19f54 154 }//end of "if" receive
prithviganeshk 1:691460a19f54 155
prithviganeshk 1:691460a19f54 156 }//end of inner while
prithviganeshk 1:691460a19f54 157
prithviganeshk 1:691460a19f54 158 }//end of while count
prithviganeshk 1:691460a19f54 159
prithviganeshk 2:73c0d4f0ff5c 160 printf("Your did it in %f seconds\n",tdiff);
prithviganeshk 1:691460a19f54 161
prithviganeshk 1:691460a19f54 162 }// end of main