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Dependencies: mbed
Fork of ESE350-Whack-a-Mole1 by
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
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
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 | } |