Vincent Belanger / Mbed 2 deprecated Receiver

Receiver code

Dependencies:   mbed

Xbee.cpp@0:f8873e0badb2, 2016-02-18 (annotated)

Committer:
vinbel93
Date:
Thu Feb 18 13:22:31 2016 +0000
Revision:
0:f8873e0badb2
Receiver

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vinbel93 0:f8873e0badb2 1 #include "mbed.h"
vinbel93 0:f8873e0badb2 2 #include "Xbee.h"
vinbel93 0:f8873e0badb2 3
vinbel93 0:f8873e0badb2 4 // Fonction d'assignation du PAN ID
vinbel93 0:f8873e0badb2 5 void setPanId(Serial* xbee, long long panId)
vinbel93 0:f8873e0badb2 6 {
vinbel93 0:f8873e0badb2 7 // Construction de la trame
vinbel93 0:f8873e0badb2 8 const int frameLength = 16;
vinbel93 0:f8873e0badb2 9 char frame[frameLength];
vinbel93 0:f8873e0badb2 10 frame[0] = 0x7E; // Start delimiter
vinbel93 0:f8873e0badb2 11 frame[1] = 0x00; // Length (MSB)
vinbel93 0:f8873e0badb2 12 frame[2] = 0x0C; // Length (LSB)
vinbel93 0:f8873e0badb2 13 frame[3] = 0x08; // AT Command
vinbel93 0:f8873e0badb2 14 frame[4] = 0x00; // Frame ID
vinbel93 0:f8873e0badb2 15 frame[5] = 'I';
vinbel93 0:f8873e0badb2 16 frame[6] = 'D';
vinbel93 0:f8873e0badb2 17 frame[7] = (panId >> 56) & 0xFF;
vinbel93 0:f8873e0badb2 18 frame[8] = (panId >> 48) & 0xFF;
vinbel93 0:f8873e0badb2 19 frame[9] = (panId >> 40) & 0xFF;
vinbel93 0:f8873e0badb2 20 frame[10] = (panId >> 32) & 0xFF;
vinbel93 0:f8873e0badb2 21 frame[11] = (panId >> 24) & 0xFF;
vinbel93 0:f8873e0badb2 22 frame[12] = (panId >> 16) & 0xFF;
vinbel93 0:f8873e0badb2 23 frame[13] = (panId >> 8) & 0xFF;
vinbel93 0:f8873e0badb2 24 frame[14] = (panId >> 0) & 0xFF;
vinbel93 0:f8873e0badb2 25 frame[15] = checksum(frame, 3, 15);
vinbel93 0:f8873e0badb2 26
vinbel93 0:f8873e0badb2 27 // Envoi sur le UART
vinbel93 0:f8873e0badb2 28 if (xbee->writeable())
vinbel93 0:f8873e0badb2 29 {
vinbel93 0:f8873e0badb2 30 for (int i = 0; i < frameLength; i++)
vinbel93 0:f8873e0badb2 31 {
vinbel93 0:f8873e0badb2 32 xbee->putc(frame[i]);
vinbel93 0:f8873e0badb2 33 }
vinbel93 0:f8873e0badb2 34 }
vinbel93 0:f8873e0badb2 35 }
vinbel93 0:f8873e0badb2 36
vinbel93 0:f8873e0badb2 37 // Envoi d'un message au coordinateur (Transmit Request)
vinbel93 0:f8873e0badb2 38 void transmitRequest(Serial* xbee, char* data, int size)
vinbel93 0:f8873e0badb2 39 {
vinbel93 0:f8873e0badb2 40 // Construction de la trame
vinbel93 0:f8873e0badb2 41 const int frameLength = 18 + size;
vinbel93 0:f8873e0badb2 42 char frame[frameLength];
vinbel93 0:f8873e0badb2 43 frame[0] = 0x7E; // Start delimiter
vinbel93 0:f8873e0badb2 44 frame[1] = 0x00; // Length (MSB)
vinbel93 0:f8873e0badb2 45 frame[2] = 0x0E + size; // Length (LSB)
vinbel93 0:f8873e0badb2 46 frame[3] = 0x10; // AT Command
vinbel93 0:f8873e0badb2 47 frame[4] = 0x01; // Frame ID
vinbel93 0:f8873e0badb2 48 frame[5] = (MAC_ADDRESS_COORDINATOR >> 56) & 0xFF;
vinbel93 0:f8873e0badb2 49 frame[6] = (MAC_ADDRESS_COORDINATOR >> 48) & 0xFF;
vinbel93 0:f8873e0badb2 50 frame[7] = (MAC_ADDRESS_COORDINATOR >> 40) & 0xFF;
vinbel93 0:f8873e0badb2 51 frame[8] = (MAC_ADDRESS_COORDINATOR >> 32) & 0xFF;
vinbel93 0:f8873e0badb2 52 frame[9] = (MAC_ADDRESS_COORDINATOR >> 24) & 0xFF;
vinbel93 0:f8873e0badb2 53 frame[10] = (MAC_ADDRESS_COORDINATOR >> 16) & 0xFF;
vinbel93 0:f8873e0badb2 54 frame[11] = (MAC_ADDRESS_COORDINATOR >> 8) & 0xFF;
vinbel93 0:f8873e0badb2 55 frame[12] = (MAC_ADDRESS_COORDINATOR >> 0) & 0xFF;
vinbel93 0:f8873e0badb2 56 frame[13] = 0xFF; // Broadcast
vinbel93 0:f8873e0badb2 57 frame[14] = 0xFE; // Broadcast
vinbel93 0:f8873e0badb2 58 frame[15] = 0x00; // Broadcast radius
vinbel93 0:f8873e0badb2 59 frame[16] = 0x00; // Options
vinbel93 0:f8873e0badb2 60
vinbel93 0:f8873e0badb2 61 // Ajout des données utiles
vinbel93 0:f8873e0badb2 62 for (int i = 0; i < size; i++)
vinbel93 0:f8873e0badb2 63 {
vinbel93 0:f8873e0badb2 64 frame[17 + i] = data[i];
vinbel93 0:f8873e0badb2 65 }
vinbel93 0:f8873e0badb2 66 frame[17 + size] = checksum(frame, 3, 17 + size);
vinbel93 0:f8873e0badb2 67
vinbel93 0:f8873e0badb2 68 // Envoi sur le UART
vinbel93 0:f8873e0badb2 69 if (xbee->writeable())
vinbel93 0:f8873e0badb2 70 {
vinbel93 0:f8873e0badb2 71 for (int i = 0; i < frameLength; i++)
vinbel93 0:f8873e0badb2 72 {
vinbel93 0:f8873e0badb2 73 xbee->putc(frame[i]);
vinbel93 0:f8873e0badb2 74 }
vinbel93 0:f8873e0badb2 75 }
vinbel93 0:f8873e0badb2 76 }
vinbel93 0:f8873e0badb2 77
vinbel93 0:f8873e0badb2 78 // Fonction de calcul de checksum
vinbel93 0:f8873e0badb2 79 char checksum(char* frame, int begin, int end)
vinbel93 0:f8873e0badb2 80 {
vinbel93 0:f8873e0badb2 81 char sum = 0;
vinbel93 0:f8873e0badb2 82
vinbel93 0:f8873e0badb2 83 // Addition des bits
vinbel93 0:f8873e0badb2 84 for (int i = begin; i < end; i++)
vinbel93 0:f8873e0badb2 85 {
vinbel93 0:f8873e0badb2 86 sum += frame[i];
vinbel93 0:f8873e0badb2 87 }
vinbel93 0:f8873e0badb2 88
vinbel93 0:f8873e0badb2 89 return 0xFF - sum;
vinbel93 0:f8873e0badb2 90 }