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@4:76adb6c7e67d, 2015-11-19 (annotated)

Committer:
prithviganeshk
Date:
Thu Nov 19 08:11:52 2015 +0000
Revision:
4:76adb6c7e67d
Parent:
3:4f09529d391b 
whack

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 3:4f09529d391b 80
prithviganeshk 1:691460a19f54 81
prithviganeshk 3:4f09529d391b 82 while(1){
prithviganeshk 1:691460a19f54 83
prithviganeshk 1:691460a19f54 84
prithviganeshk 3:4f09529d391b 85 printf("Do you want to play? [y/n] \n");
prithviganeshk 3:4f09529d391b 86 char start = pc.getc();
prithviganeshk 3:4f09529d391b 87
prithviganeshk 3:4f09529d391b 88 if(start == 'n'){
prithviganeshk 3:4f09529d391b 89 printf("Game Over\n");
prithviganeshk 3:4f09529d391b 90 exit(0); //exit is OK
prithviganeshk 3:4f09529d391b 91 }
prithviganeshk 3:4f09529d391b 92
prithviganeshk 3:4f09529d391b 93 else if(start == 'y'){
prithviganeshk 3:4f09529d391b 94
prithviganeshk 3:4f09529d391b 95 printf("Start Whacking ... \n");
prithviganeshk 3:4f09529d391b 96 //Set the Number of slaves
prithviganeshk 3:4f09529d391b 97 int slaves = 2;
prithviganeshk 1:691460a19f54 98
prithviganeshk 3:4f09529d391b 99 //Channels of the nodes
prithviganeshk 3:4f09529d391b 100 //channel1 = 15; //channel of the first node
prithviganeshk 3:4f09529d391b 101 //channel2 = 14; //channel of the first node
prithviganeshk 3:4f09529d391b 102 uint8_t channel;
prithviganeshk 1:691460a19f54 103
prithviganeshk 3:4f09529d391b 104 //Set the Count to 10
prithviganeshk 4:76adb6c7e67d 105 int count,n = 0;
prithviganeshk 4:76adb6c7e67d 106 int dont_set_channel = 0;
prithviganeshk 3:4f09529d391b 107 float begin = 0;
prithviganeshk 3:4f09529d391b 108 float end = 0;
prithviganeshk 3:4f09529d391b 109 float diff = 0;
prithviganeshk 3:4f09529d391b 110 float tdiff = 0;
prithviganeshk 1:691460a19f54 111
prithviganeshk 3:4f09529d391b 112 //Start the timer
prithviganeshk 3:4f09529d391b 113 timer.start();
prithviganeshk 1:691460a19f54 114
prithviganeshk 3:4f09529d391b 115 //Set the yes and no arrays
prithviganeshk 3:4f09529d391b 116 char yes[] = "y";
prithviganeshk 3:4f09529d391b 117 char no[] = "n";
prithviganeshk 3:4f09529d391b 118
prithviganeshk 3:4f09529d391b 119 while(count < 10) {
prithviganeshk 3:4f09529d391b 120
prithviganeshk 3:4f09529d391b 121 //Send message to random node
prithviganeshk 3:4f09529d391b 122
prithviganeshk 3:4f09529d391b 123 //Calculate random number
prithviganeshk 3:4f09529d391b 124 //srand(time(0));
prithviganeshk 4:76adb6c7e67d 125 channel = (rand()%(slaves)) + 14;
prithviganeshk 3:4f09529d391b 126 //channel = 15;
prithviganeshk 1:691460a19f54 127
prithviganeshk 4:76adb6c7e67d 128 //Check for channel of the mole if a light was missed
prithviganeshk 4:76adb6c7e67d 129 while(dont_set_channel == channel){
prithviganeshk 4:76adb6c7e67d 130 channel = (rand()%(slaves)) + 14; //set to minimum channel
prithviganeshk 4:76adb6c7e67d 131 }
prithviganeshk 4:76adb6c7e67d 132
prithviganeshk 4:76adb6c7e67d 133 //dont_set_channel= 0;
prithviganeshk 4:76adb6c7e67d 134
prithviganeshk 3:4f09529d391b 135 //Set the Channel to the random node selected
prithviganeshk 3:4f09529d391b 136 mrf.SetChannel(channel);
prithviganeshk 1:691460a19f54 137
prithviganeshk 3:4f09529d391b 138 //Send message to the random slave and start timer
prithviganeshk 4:76adb6c7e67d 139 char num = n;
prithviganeshk 4:76adb6c7e67d 140 char* numptr;
prithviganeshk 4:76adb6c7e67d 141 numptr = &num;
prithviganeshk 4:76adb6c7e67d 142 strcpy(txBuffer, numptr);
prithviganeshk 3:4f09529d391b 143 rf_send(txBuffer, strlen(txBuffer) + 1);
prithviganeshk 3:4f09529d391b 144 //Switch on the Led when sending data
prithviganeshk 3:4f09529d391b 145 led2 = 1;
prithviganeshk 3:4f09529d391b 146 printf("Sending signal to mole %u \n", channel - 14);
prithviganeshk 3:4f09529d391b 147 begin = timer.read_ms();
prithviganeshk 3:4f09529d391b 148
prithviganeshk 3:4f09529d391b 149 //Wait for reply from the slave
prithviganeshk 3:4f09529d391b 150
prithviganeshk 3:4f09529d391b 151 while(1){
prithviganeshk 1:691460a19f54 152
prithviganeshk 3:4f09529d391b 153 rxLen = rf_receive(rxBuffer, 128);
prithviganeshk 1:691460a19f54 154
prithviganeshk 3:4f09529d391b 155 if(rxLen > 0) {
prithviganeshk 3:4f09529d391b 156
prithviganeshk 3:4f09529d391b 157 //Calculate time difference
prithviganeshk 3:4f09529d391b 158 end = timer.read_ms();
prithviganeshk 3:4f09529d391b 159 diff = end - begin;
prithviganeshk 3:4f09529d391b 160 tdiff += (diff / 1000);
prithviganeshk 3:4f09529d391b 161
prithviganeshk 3:4f09529d391b 162 //Switch off Led to indicate received data
prithviganeshk 3:4f09529d391b 163 led2 = 0;
prithviganeshk 3:4f09529d391b 164
prithviganeshk 3:4f09529d391b 165 //Check if mole was pressed or not
prithviganeshk 3:4f09529d391b 166 pc.printf("Received: %s\r\n", rxBuffer);
prithviganeshk 3:4f09529d391b 167
prithviganeshk 3:4f09529d391b 168 //If it was pressed - increment the count
prithviganeshk 3:4f09529d391b 169 if(strcmp (yes,rxBuffer) == 0){
prithviganeshk 3:4f09529d391b 170 pc.printf("pressed\n");
prithviganeshk 3:4f09529d391b 171 count++;
prithviganeshk 4:76adb6c7e67d 172 n++;
prithviganeshk 4:76adb6c7e67d 173 //strcpy(txBuffer, "d"); //send d to decrement the time on slaves end
prithviganeshk 4:76adb6c7e67d 174 dont_set_channel = 0;
prithviganeshk 3:4f09529d391b 175 }
prithviganeshk 3:4f09529d391b 176 //If it was not pressed - dont alter the count
prithviganeshk 3:4f09529d391b 177 else if(strcmp (no,rxBuffer) == 0){
prithviganeshk 3:4f09529d391b 178 pc.printf("Not pressed\n");
prithviganeshk 4:76adb6c7e67d 179 //strcpy(txBuffer, "s");
prithviganeshk 4:76adb6c7e67d 180 tdiff += 3; // Penalty of 3 seconds
prithviganeshk 4:76adb6c7e67d 181 dont_set_channel = channel; // if there was no press do not send on light on this channel again
prithviganeshk 4:76adb6c7e67d 182
prithviganeshk 3:4f09529d391b 183 }
prithviganeshk 3:4f09529d391b 184
prithviganeshk 3:4f09529d391b 185 break;
prithviganeshk 3:4f09529d391b 186
prithviganeshk 3:4f09529d391b 187 }//end of "if" receive
prithviganeshk 1:691460a19f54 188
prithviganeshk 3:4f09529d391b 189 }//end of inner while
prithviganeshk 1:691460a19f54 190
prithviganeshk 3:4f09529d391b 191 }//end of while count
prithviganeshk 1:691460a19f54 192
prithviganeshk 3:4f09529d391b 193 printf("Your did it in %f seconds\n",tdiff);
prithviganeshk 1:691460a19f54 194
prithviganeshk 3:4f09529d391b 195 }//end of else if start
prithviganeshk 3:4f09529d391b 196 }//end of while 1
prithviganeshk 1:691460a19f54 197 }// end of main