ese519 / Mbed 2 deprecated ESE350-Whack-a-Mole1

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Dependencies:   mbed

Fork of ESE350-Whack-a-Mole by ese519

WhackAMole.cpp@1:7fae8b781c61, 2015-10-20 (annotated)

Committer:
jfields
Date:
Tue Oct 20 00:17:13 2015 +0000
Revision:
1:7fae8b781c61
Parent:
0:ddc820578cb0 
master

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mlab4 0:ddc820578cb0 1 #include "mbed.h"
mlab4 0:ddc820578cb0 2 #include "MRF24J40.h"
mlab4 0:ddc820578cb0 3
mlab4 0:ddc820578cb0 4 #include <string>
mlab4 0:ddc820578cb0 5
mlab4 0:ddc820578cb0 6 // RF tranceiver to link with handheld.
mlab4 0:ddc820578cb0 7 MRF24J40 mrf(p11, p12, p13, p14, p21);
mlab4 0:ddc820578cb0 8
mlab4 0:ddc820578cb0 9 // LEDs you can treat these as variables (led2 = 1 will turn led2 on!)
mlab4 0:ddc820578cb0 10 DigitalOut led1(LED1);
mlab4 0:ddc820578cb0 11 DigitalOut led2(LED2);
mlab4 0:ddc820578cb0 12 DigitalOut led3(LED3);
mlab4 0:ddc820578cb0 13 DigitalOut led4(LED4);
mlab4 0:ddc820578cb0 14
mlab4 0:ddc820578cb0 15 // Timer
mlab4 0:ddc820578cb0 16 Timer timer;
mlab4 0:ddc820578cb0 17
mlab4 0:ddc820578cb0 18 // Serial port for showing RX data.
mlab4 0:ddc820578cb0 19 Serial pc(USBTX, USBRX);
mlab4 0:ddc820578cb0 20
mlab4 0:ddc820578cb0 21 // Used for sending and receiving
mlab4 0:ddc820578cb0 22 char txBuffer[128];
mlab4 0:ddc820578cb0 23 char rxBuffer[128];
mlab4 0:ddc820578cb0 24 int rxLen;
mlab4 0:ddc820578cb0 25
jfields 1:7fae8b781c61 26 // funcs
jfields 1:7fae8b781c61 27 int get_mole();
jfields 1:7fae8b781c61 28 void led_update(int i);
jfields 1:7fae8b781c61 29
jfields 1:7fae8b781c61 30 // global vars
jfields 1:7fae8b781c61 31 int total_time = 0;
jfields 1:7fae8b781c61 32 int send_new_mole = 1;
jfields 1:7fae8b781c61 33 int round = 0;
jfields 1:7fae8b781c61 34
mlab4 0:ddc820578cb0 35 //***************** Do not change these methods (please) *****************//
mlab4 0:ddc820578cb0 36
mlab4 0:ddc820578cb0 37 /**
mlab4 0:ddc820578cb0 38 * Receive data from the MRF24J40.
mlab4 0:ddc820578cb0 39 *
mlab4 0:ddc820578cb0 40 * @param data A pointer to a char array to hold the data
mlab4 0:ddc820578cb0 41 * @param maxLength The max amount of data to read.
mlab4 0:ddc820578cb0 42 */
mlab4 0:ddc820578cb0 43 int rf_receive(char *data, uint8_t maxLength)
mlab4 0:ddc820578cb0 44 {
mlab4 0:ddc820578cb0 45 uint8_t len = mrf.Receive((uint8_t *)data, maxLength);
mlab4 0:ddc820578cb0 46 uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
mlab4 0:ddc820578cb0 47
mlab4 0:ddc820578cb0 48 if(len > 10) {
mlab4 0:ddc820578cb0 49 //Remove the header and footer of the message
mlab4 0:ddc820578cb0 50 for(uint8_t i = 0; i < len-2; i++) {
mlab4 0:ddc820578cb0 51 if(i<8) {
mlab4 0:ddc820578cb0 52 //Make sure our header is valid first
mlab4 0:ddc820578cb0 53 if(data[i] != header[i])
mlab4 0:ddc820578cb0 54 return 0;
mlab4 0:ddc820578cb0 55 } else {
mlab4 0:ddc820578cb0 56 data[i-8] = data[i];
mlab4 0:ddc820578cb0 57 }
mlab4 0:ddc820578cb0 58 }
mlab4 0:ddc820578cb0 59
mlab4 0:ddc820578cb0 60 //pc.printf("Received: %s length:%d\r\n", data, ((int)len)-10);
mlab4 0:ddc820578cb0 61 }
mlab4 0:ddc820578cb0 62 return ((int)len)-10;
mlab4 0:ddc820578cb0 63 }
mlab4 0:ddc820578cb0 64
mlab4 0:ddc820578cb0 65 /**
mlab4 0:ddc820578cb0 66 * Send data to another MRF24J40.
mlab4 0:ddc820578cb0 67 *
mlab4 0:ddc820578cb0 68 * @param data The string to send
mlab4 0:ddc820578cb0 69 * @param maxLength The length of the data to send.
mlab4 0:ddc820578cb0 70 * If you are sending a null-terminated string you can pass strlen(data)+1
mlab4 0:ddc820578cb0 71 */
mlab4 0:ddc820578cb0 72 void rf_send(char *data, uint8_t len)
mlab4 0:ddc820578cb0 73 {
mlab4 0:ddc820578cb0 74 //We need to prepend the message with a valid ZigBee header
mlab4 0:ddc820578cb0 75 uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
mlab4 0:ddc820578cb0 76 uint8_t *send_buf = (uint8_t *) malloc( sizeof(uint8_t) * (len+8) );
mlab4 0:ddc820578cb0 77
mlab4 0:ddc820578cb0 78 for(uint8_t i = 0; i < len+8; i++) {
mlab4 0:ddc820578cb0 79 //prepend the 8-byte header
mlab4 0:ddc820578cb0 80 send_buf[i] = (i<8) ? header[i] : data[i-8];
mlab4 0:ddc820578cb0 81 }
mlab4 0:ddc820578cb0 82 //pc.printf("Sent: %s\r\n", send_buf+8);
mlab4 0:ddc820578cb0 83
mlab4 0:ddc820578cb0 84 mrf.Send(send_buf, len+8);
mlab4 0:ddc820578cb0 85 free(send_buf);
mlab4 0:ddc820578cb0 86 }
mlab4 0:ddc820578cb0 87
mlab4 0:ddc820578cb0 88
mlab4 0:ddc820578cb0 89 //***************** You can start coding here *****************//
mlab4 0:ddc820578cb0 90 int main (void)
mlab4 0:ddc820578cb0 91 {
mlab4 0:ddc820578cb0 92 uint8_t channel = 2;
mlab4 0:ddc820578cb0 93
mlab4 0:ddc820578cb0 94 //Set the Channel. 0 is default, 15 is max
mlab4 0:ddc820578cb0 95 mrf.SetChannel(channel);
mlab4 0:ddc820578cb0 96
mlab4 0:ddc820578cb0 97 //Start the timer
mlab4 0:ddc820578cb0 98 timer.start();
jfields 1:7fae8b781c61 99
jfields 1:7fae8b781c61 100 // seed rand num generator
jfields 1:7fae8b781c61 101 srand(time(NULL));
mlab4 0:ddc820578cb0 102
mlab4 0:ddc820578cb0 103 while(true) {
mlab4 0:ddc820578cb0 104 //Try to receive some data
mlab4 0:ddc820578cb0 105 rxLen = rf_receive(rxBuffer, 128);
mlab4 0:ddc820578cb0 106 if(rxLen > 0) {
mlab4 0:ddc820578cb0 107 //Toggle the Led
mlab4 0:ddc820578cb0 108 led1 = led1^1;
mlab4 0:ddc820578cb0 109 pc.printf("Received: %s\r\n", rxBuffer);
jfields 1:7fae8b781c61 110
jfields 1:7fae8b781c61 111 //if (strcmp(rxBuffer, "HIT")) {
jfields 1:7fae8b781c61 112 total_time += timer.read_ms();
jfields 1:7fae8b781c61 113 send_new_mole = 1;
jfields 1:7fae8b781c61 114 round++;
jfields 1:7fae8b781c61 115 wait(0.5);
jfields 1:7fae8b781c61 116 printf("Your current score = %d ms\n",total_time);
jfields 1:7fae8b781c61 117 //}
jfields 1:7fae8b781c61 118
jfields 1:7fae8b781c61 119 }
jfields 1:7fae8b781c61 120
jfields 1:7fae8b781c61 121 if (round == 10) {
jfields 1:7fae8b781c61 122 printf("You hit 10 moles in %d seconds!\n",total_time);
jfields 1:7fae8b781c61 123 exit(1);
mlab4 0:ddc820578cb0 124 }
mlab4 0:ddc820578cb0 125
mlab4 0:ddc820578cb0 126 //Send some data every second
jfields 1:7fae8b781c61 127 if(send_new_mole) {
jfields 1:7fae8b781c61 128
jfields 1:7fae8b781c61 129 send_new_mole = 0;
jfields 1:7fae8b781c61 130
mlab4 0:ddc820578cb0 131 //Reset the timer to 0
mlab4 0:ddc820578cb0 132 timer.reset();
jfields 1:7fae8b781c61 133
jfields 1:7fae8b781c61 134 // get mole
jfields 1:7fae8b781c61 135 string msg_out;
jfields 1:7fae8b781c61 136 int mole = get_mole();
jfields 1:7fae8b781c61 137 if (mole == 1) msg_out = "MOLE1";
jfields 1:7fae8b781c61 138 if (mole == 2) msg_out = "MOLE2";
jfields 1:7fae8b781c61 139 if (mole == 3) msg_out = "MOLE3";
jfields 1:7fae8b781c61 140 led_update(mole);
jfields 1:7fae8b781c61 141
mlab4 0:ddc820578cb0 142 //Add to the buffer. You may want to check out sprintf
jfields 1:7fae8b781c61 143 strcpy(txBuffer, msg_out.c_str());
mlab4 0:ddc820578cb0 144 //Send the buffer
mlab4 0:ddc820578cb0 145 rf_send(txBuffer, strlen(txBuffer) + 1);
mlab4 0:ddc820578cb0 146 pc.printf("Sent: %s\r\n", txBuffer);
jfields 1:7fae8b781c61 147
mlab4 0:ddc820578cb0 148 }
mlab4 0:ddc820578cb0 149 }
mlab4 0:ddc820578cb0 150 }
jfields 1:7fae8b781c61 151
jfields 1:7fae8b781c61 152 int get_mole() {
jfields 1:7fae8b781c61 153 return rand()%3+1;
jfields 1:7fae8b781c61 154 }
jfields 1:7fae8b781c61 155
jfields 1:7fae8b781c61 156 void led_update(int i) {
jfields 1:7fae8b781c61 157 led2 = 0;
jfields 1:7fae8b781c61 158 led3 = 0;
jfields 1:7fae8b781c61 159 led4 = 0;
jfields 1:7fae8b781c61 160 if (i==1) led2 = 1;
jfields 1:7fae8b781c61 161 if (i==2) led3 = 1;
jfields 1:7fae8b781c61 162 if (i==3) led4 = 1;
jfields 1:7fae8b781c61 163 }