Commit 17f34671e0ffd89edd847051c9ebfa1dc1524857
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code module lora embarque
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1 | +++ a/LORA_nacelle.ino | |
... | ... | @@ -0,0 +1,136 @@ |
1 | +// Code contenu dans le module Lora Feather EMBARQUE dans la nacelle | |
2 | + | |
3 | + | |
4 | +#include <SPI.h> | |
5 | +#include <RH_RF95.h> | |
6 | + | |
7 | +/* for feather m0 */ | |
8 | +#define RFM95_CS 8 | |
9 | +#define RFM95_RST 4 | |
10 | +#define RFM95_INT 3 | |
11 | + | |
12 | +#define TAILLE_RADIOPACKET 20 | |
13 | +#define LED 13 | |
14 | + | |
15 | +// Change to 434.0 or other frequency, must match RX's freq! | |
16 | +#define RF95_FREQ 434.0 | |
17 | +// Singleton instance of the radio driver | |
18 | +RH_RF95 rf95(RFM95_CS, RFM95_INT); | |
19 | + | |
20 | +//Fonction vidage de buffer série | |
21 | +void serialFlush(){ | |
22 | + pinMode(LED, OUTPUT); | |
23 | + while(Serial.available() > 0) { | |
24 | + char t = Serial.read(); | |
25 | + } | |
26 | +} | |
27 | + | |
28 | +void setup() | |
29 | +{ | |
30 | + pinMode(RFM95_RST, OUTPUT); | |
31 | + digitalWrite(RFM95_RST, HIGH); | |
32 | + while (!Serial); // peut être à enlever avec rasp.. | |
33 | + Serial.begin(9600); | |
34 | + delay(100); | |
35 | + //Serial.println("Feather LoRa TX Test!"); | |
36 | + // manual reset | |
37 | + digitalWrite(RFM95_RST, LOW); | |
38 | + delay(10); | |
39 | + digitalWrite(RFM95_RST, HIGH); | |
40 | + delay(10); | |
41 | + while (!rf95.init()) { | |
42 | + //Serial.println("LoRa radio init failed"); | |
43 | + while (1); | |
44 | + } | |
45 | + //Serial.println("LoRa radio init completed"); | |
46 | + // Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM | |
47 | + if (!rf95.setFrequency(RF95_FREQ)) { | |
48 | + //Serial.println("setFrequency failed"); | |
49 | + while (1); | |
50 | + | |
51 | + serialFlush(); | |
52 | + } | |
53 | + | |
54 | + //Serial.print("Set Freq to: "); Serial.println(RF95_FREQ); | |
55 | + // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on | |
56 | + // The default transmitter power is 13dBm, using PA_BOOST. | |
57 | + // If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then | |
58 | + // you can set transmitter powers from 5 to 23 dBm: | |
59 | + rf95.setTxPower(23, false); | |
60 | +} | |
61 | + | |
62 | +int nb_envoi; | |
63 | +uint8_t radiopacket[TAILLE_RADIOPACKET]="null"; //Chaîne contenant la requête à envoyer à la nacelle | |
64 | +uint8_t radiopacket_tmp[TAILLE_RADIOPACKET]="null"; | |
65 | + | |
66 | +void loop() | |
67 | +{ | |
68 | + //DECLARATION VARIABLES et INITIALISATION | |
69 | + char caractere_lu = 0; //caractere à lire | |
70 | + int caractere_dispo =0; // nombre de caracteres dispo dans le buffer | |
71 | + int i_chaine = 0; //indique l'endroit où on doit écrire dans la chaîne | |
72 | + | |
73 | + memcpy(radiopacket_tmp,radiopacket,TAILLE_RADIOPACKET); | |
74 | + | |
75 | + //LECTURE DES DONNEES A ENVOYER AU SOL | |
76 | + caractere_dispo = Serial.available(); | |
77 | + | |
78 | + while(caractere_dispo > 0) //tant qu'il y a des caractères à lire | |
79 | + { | |
80 | + caractere_lu = Serial.read(); //on lit le caractère | |
81 | + radiopacket[i_chaine] = caractere_lu; | |
82 | + //Serial.print(caractere_lu); //puis on le renvoi à l’expéditeur tel quel | |
83 | + caractere_dispo = Serial.available(); //on relit le nombre de caractères dispo | |
84 | + i_chaine++; | |
85 | + } | |
86 | + radiopacket[TAILLE_RADIOPACKET-1] = 0; // marquage fin du packet | |
87 | + | |
88 | + //si la donnée reçu est différente de la précédente | |
89 | + if(memcmp(radiopacket,radiopacket_tmp,TAILLE_RADIOPACKET)!=0){ | |
90 | + nb_envoi = 0; | |
91 | + } | |
92 | + | |
93 | + | |
94 | + //Serial.println("Sending..."); delay(10); | |
95 | + | |
96 | + //ENVOI DES DONNEES AU SOL | |
97 | + if (nb_envoi==0){ | |
98 | + rf95.send((uint8_t *)radiopacket, TAILLE_RADIOPACKET); | |
99 | + rf95.waitPacketSent(); | |
100 | + //Serial.println("TX done"); delay(10); | |
101 | + digitalWrite(LED, HIGH); | |
102 | + nb_envoi++; | |
103 | + } | |
104 | + | |
105 | + | |
106 | + //RECEPTION DES REQUETES PROVENANT DU SOL | |
107 | + uint8_t buf[RH_RF95_MAX_MESSAGE_LEN]; | |
108 | + uint8_t len = sizeof(buf); | |
109 | + //Serial.println("Waiting for reply..."); delay(10); | |
110 | + if (rf95.waitAvailableTimeout(1000)) | |
111 | + { | |
112 | + // Should be a reply message for us now | |
113 | + if (rf95.recv(buf, &len)) | |
114 | + { | |
115 | + //ENVOI DE LA REQUETE VERS LA RASPBERRY | |
116 | + Serial.println((char*)buf); | |
117 | + | |
118 | + //Serial.print("RSSI: "); | |
119 | + //Serial.println(rf95.lastRssi(), DEC); | |
120 | + | |
121 | + } | |
122 | + else | |
123 | + { | |
124 | + //Serial.println("Receive failed"); | |
125 | + } | |
126 | + } | |
127 | + else | |
128 | + { | |
129 | + //Serial.println("No reply"); | |
130 | + } | |
131 | + digitalWrite(LED, LOW); | |
132 | + | |
133 | + delay(200); | |
134 | +} | |
135 | + | |
136 | + | ... | ... |