Projet S5 Info / Mbed 2 deprecated Projet-xbee-mbed_fixe

code pour recevoir des trames et mettre les char sur le port usb

Dependencies:   mbed

Fork of APP4 by S5info_H14

trame.cpp@8:ecc7c75a37ee, 2014-04-29 (annotated)

Committer:
RufflesAllD
Date:
Tue Apr 29 16:27:28 2014 +0000
Revision:
8:ecc7c75a37ee
Parent:
7:a6f58e5d1188 
commentaires

Who changed what in which revision?

UserRevisionLine numberNew contents of line
joGenie 2:7515831bb5f5 1 #include "trame.hpp"
joGenie 2:7515831bb5f5 2
joGenie 2:7515831bb5f5 3 Trame::Trame(PinName _tx, PinName _rx) :
joGenie 2:7515831bb5f5 4 tx(_tx),
joGenie 2:7515831bb5f5 5 rx(_rx)
joGenie 2:7515831bb5f5 6 {
joGenie 2:7515831bb5f5 7 }
joGenie 2:7515831bb5f5 8
joGenie 3:350f07072089 9 void Trame::sendATCommand(const char* command, const char* data, int length)
joGenie 2:7515831bb5f5 10 {
RufflesAllD 5:daf08fff7abb 11 int tmp = length + 4; // length (grandeur du data à envoyer) 4 (API(1), FrameID(1), AT Command(2))
RufflesAllD 5:daf08fff7abb 12 char* trm = new char[tmp + 4]; // 4 (Delimiter(1), Length(2), Checksum(1))
joGenie 3:350f07072089 13
joGenie 3:350f07072089 14 trm[0] = 0x7E; // Delimiter
joGenie 3:350f07072089 15 trm[1] = static_cast<char>((tmp >> 8) & 0xFF); // MSB de length
joGenie 3:350f07072089 16 trm[2] = static_cast<char>(tmp & 0xFF); // LSB length
RufflesAllD 5:daf08fff7abb 17 trm[3] = 0x09; // Type
joGenie 3:350f07072089 18 trm[4] = 0x01; // API
joGenie 3:350f07072089 19 trm[5] = command[0];
joGenie 3:350f07072089 20 trm[6] = command[1];
joGenie 3:350f07072089 21 for (int i = 0; i < length; i++)
joGenie 3:350f07072089 22 trm[7+i] = data[i]; //Data
joGenie 4:56b1ca37a175 23 trm[7+length] = crc8(trm, tmp + 3);
joGenie 3:350f07072089 24
joGenie 2:7515831bb5f5 25 Serial xbee(tx, rx);
joGenie 4:56b1ca37a175 26 for (int i = 0; i < tmp + 4; i++)
joGenie 4:56b1ca37a175 27 xbee.putc(trm[i]); //Transmition des donnees
joGenie 3:350f07072089 28
joGenie 3:350f07072089 29 wait(0.01);
joGenie 3:350f07072089 30 delete trm;
joGenie 3:350f07072089 31 }
joGenie 3:350f07072089 32
RufflesAllD 8:ecc7c75a37ee 33 // Calcul du crc8
joGenie 3:350f07072089 34 unsigned char Trame::crc8(const char* data, int length)
joGenie 3:350f07072089 35 {
joGenie 3:350f07072089 36 unsigned char crc = 0;
joGenie 4:56b1ca37a175 37 for (int i = 3; i < length; i++)
joGenie 3:350f07072089 38 crc += data[i];
joGenie 3:350f07072089 39
joGenie 3:350f07072089 40 return (0xFF - crc);
RufflesAllD 5:daf08fff7abb 41 }
RufflesAllD 5:daf08fff7abb 42
RufflesAllD 8:ecc7c75a37ee 43 // fonction de debugage pour afficher toutes les informations sortie de la trame reçue
RufflesAllD 5:daf08fff7abb 44 void Trame::checkTrame(char *data, char check, int length)
RufflesAllD 5:daf08fff7abb 45 {
RufflesAllD 5:daf08fff7abb 46 Serial pc(USBTX, USBRX);
RufflesAllD 5:daf08fff7abb 47
RufflesAllD 5:daf08fff7abb 48 pc.printf("%d : data : ", length);
RufflesAllD 5:daf08fff7abb 49
RufflesAllD 5:daf08fff7abb 50 for (int a = 0; a < length; a++)
RufflesAllD 5:daf08fff7abb 51 {
RufflesAllD 5:daf08fff7abb 52 pc.printf("%x ", data[a]);
RufflesAllD 5:daf08fff7abb 53 }
RufflesAllD 5:daf08fff7abb 54 pc.printf(": check : %x\n\r", check);
RufflesAllD 5:daf08fff7abb 55 }