bgriller / ballon_atmospherique

Commit a66eb1b58dc746189c76411b730c180313caa96b

Authored by bgriller
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1 -// Feather9x_RX  
2 -// -*- mode: C++ -*-  
3 -// Example sketch showing how to create a simple messaging client (receiver)  
4 -// with the RH_RF95 class. RH_RF95 class does not provide for addressing or  
5 -// reliability, so you should only use RH_RF95 if you do not need the higher  
6 -// level messaging abilities.  
7 -// It is designed to work with the other example Feather9x_TX  
8 -#include <SPI.h>  
9 -#include <RH_RF95.h>  
10 -  
11 - //for feather m0  
12 -#define RFM95_CS 8  
13 -#define RFM95_RST 4  
14 -#define RFM95_INT 3  
15 -  
16 -//taille des paquets Lora envoyés à chaque émission  
17 -#define TAILLE_RADIOPACKET 20  
18 -  
19 -// Change to 434.0 or other frequency, must match RX's freq!  
20 -#define RF95_FREQ 434.0  
21 -// Singleton instance of the radio driver  
22 -RH_RF95 rf95(RFM95_CS, RFM95_INT);  
23 -// Blinky on receipt  
24 -#define LED 13  
25 -  
26 -  
27 -  
28 -//Fonction vidage de buffer série  
29 -void serialFlush(){  
30 - pinMode(LED, OUTPUT);  
31 - while(Serial.available() > 0) {  
32 - char t = Serial.read();  
33 - }  
34 -}  
35 -  
36 -void RAZradiopacket(uint8_t radiopacket[TAILLE_RADIOPACKET]){  
37 - int j;  
38 - for(j=0;j<TAILLE_RADIOPACKET;j++){  
39 - radiopacket[j] = '0';  
40 - }  
41 -}  
42 -  
43 -  
44 -  
45 -void setup()  
46 -{  
47 -pinMode(LED, OUTPUT);  
48 -pinMode(RFM95_RST, OUTPUT);  
49 -digitalWrite(RFM95_RST, HIGH);  
50 -while (!Serial);  
51 -Serial.begin(9600);  
52 -delay(100);  
53 -//Serial.println("Feather LoRa RX Test!");  
54 -// manual reset  
55 -digitalWrite(RFM95_RST, LOW);  
56 -delay(10);  
57 -digitalWrite(RFM95_RST, HIGH);  
58 -delay(10);  
59 -while (!rf95.init()) {  
60 -Serial.println("LoRa radio init failed");  
61 -while (1);  
62 -}  
63 -Serial.println("Projet IMA Ballon atmospherique ");  
64 -// Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM  
65 -if (!rf95.setFrequency(RF95_FREQ)) {  
66 -Serial.println("setFrequency failed");  
67 -while (1);  
68 -serialFlush();  
69 -  
70 -}  
71 -Serial.print("Set Freq to: "); Serial.println(RF95_FREQ);  
72 -// Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on  
73 -// The default transmitter power is 13dBm, using PA_BOOST.  
74 -// If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then  
75 -// you can set transmitter powers from 5 to 23 dBm:  
76 -rf95.setTxPower(23, false);  
77 -//RAZradiopacket(radiopacket_tmp);  
78 -//RAZradiopacket(radiopacket);  
79 -}  
80 -  
81 -  
82 -int nb_envoi;  
83 -uint8_t radiopacket[TAILLE_RADIOPACKET] ="null"; //Chaîne contenant la requête à envoyer à la nacelle  
84 -uint8_t radiopacket_tmp[TAILLE_RADIOPACKET]="null";  
85 -  
86 -void loop()  
87 - {  
88 - //DECLARATION VARIABLES ET INITIALISATION  
89 - char caractere_lu = 0; //caractere à lire  
90 - int caractere_dispo = 0; // nombre de caracteres dispo dans le buffer  
91 - int i_chaine = 0; //indique l'endroit où on doit écrire dans la chaîne  
92 -  
93 - memcpy(radiopacket_tmp,radiopacket,TAILLE_RADIOPACKET);  
94 -  
95 - //LECTURE REQUETE SUR PORT SERIE "SOL"  
96 - caractere_dispo = Serial.available();  
97 -  
98 - while(caractere_dispo > 0) //tant qu'il y a des caractères à lire  
99 - {  
100 - caractere_lu = Serial.read(); //on lit le caractère  
101 - radiopacket[i_chaine] = caractere_lu;  
102 - Serial.print(caractere_lu); //puis on le renvoi à l’expéditeur tel quel  
103 - caractere_dispo = Serial.available(); //on relit le nombre de caractères dispo  
104 - i_chaine++;  
105 - }  
106 - radiopacket[i_chaine] = 0; // marquage fin du packet  
107 -  
108 - //si la donnée reçu est différente de la précédente  
109 - if(memcmp(radiopacket,radiopacket_tmp,TAILLE_RADIOPACKET)!=0){  
110 - Serial.print("\nRequete differente\n");  
111 - nb_envoi = 0;  
112 - }  
113 -  
114 -  
115 - //ENVOI REQUETE  
116 - if (nb_envoi==0){  
117 - rf95.send((uint8_t *)radiopacket, sizeof(radiopacket));  
118 - Serial.print("Envoi commande\n");  
119 - nb_envoi++;  
120 - Serial.print("Nb_envoi:");  
121 - Serial.println(nb_envoi);  
122 - //radiopacket[0] = '0';  
123 - //RAZradiopacket(radiopacket);  
124 - }  
125 -  
126 -  
127 -  
128 - //LECTURE DONNEES VENANT DE LA NACELLE  
129 - if (rf95.available())  
130 - {  
131 - // Should be a message for us now  
132 - uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];  
133 - uint8_t len = sizeof(buf);  
134 - if (rf95.recv(buf, &len))  
135 - {  
136 - digitalWrite(LED, HIGH);  
137 - // RH_RF95::printBuffer("Received: ", buf, len);  
138 - Serial.print("Reception: ");  
139 - Serial.println((char*)buf);  
140 - serialFlush();  
141 -  
142 -  
143 -  
144 - // Send a reply  
145 - //rf95.send(data, sizeof(data));  
146 - //rf95.waitPacketSent();  
147 - //Serial.println("Sent a reply");  
148 - //digitalWrite(LED, LOW);  
149 - }  
150 - else  
151 - {  
152 - Serial.println("Receive failed");  
153 - }  
154 - }  
155 - delay(200);  
156 -}  
157 -