Merge pull request #58 from BeelanMX/DownlinkTimingFix

Downlink timing fix

examples/class-C-ABP/class_c_ABP/class_c_ABP.ino

@@ -0,0 +1,75 @@
+#include <lorawan.h>
+
+//ABP Credentials 
+const char *devAddr = "00000000";
+const char *nwkSKey = "00000000000000000000000000000000";
+const char *appSKey = "00000000000000000000000000000000";
+
+const unsigned long interval = 20000;    // 10 s interval to send message
+unsigned long previousMillis = 0;  // will store last time message sent
+unsigned int counter = 0;     // message counter
+
+char myStr[50];
+char outStr[255];
+byte recvStatus = 0;
+
+const sRFM_pins RFM_pins = {
+  .CS = 6,
+  .RST = 7,
+  .DIO0 = 8,
+  .DIO1 = 9,
+  .DIO2 = -1,
+  .DIO5 = -1,
+};
+
+
+void setup() {
+  // Setup loraid access
+  Serial.begin(115200);
+  delay(5000);
+  Serial.println("Start..");
+  if(!lora.init()){
+    Serial.println("RFM95 not detected");
+    delay(5000);
+    return;
+  }
+
+  // Set LoRaWAN Class change CLASS_A or CLASS_C
+  lora.setDeviceClass(CLASS_C);
+
+  // Set Data Rate
+  lora.setDataRate(SF7BW125);
+
+  // set channel to random
+  lora.setChannel(MULTI);
+
+  // Put ABP Key and DevAddress here
+  lora.setNwkSKey(nwkSKey);
+  lora.setAppSKey(appSKey);
+  lora.setDevAddr(devAddr);
+}
+
+void loop() {
+
+  // Check interval overflow
+  if(millis() - previousMillis > interval) {
+    previousMillis = millis(); 
+
+    sprintf(myStr, "Counter-%d", counter); 
+
+    Serial.print("Sending: ");
+    Serial.println(myStr);
+
+    lora.sendUplink(myStr, strlen(myStr), 0, 1);
+    counter++;
+  }
+
+  recvStatus = lora.readData(outStr);
+  if(recvStatus) {
+    Serial.print("====>> ");
+    Serial.println(outStr);
+  }
+
+  // Check Lora RX
+  lora.update();
+}

examples/class-C-ABP/serialToLoRaWAN/serialToLoRaWAN.ino

@@ -0,0 +1,71 @@
+#include <lorawan.h>
+
+//ABP Credentials 
+const char *devAddr = "00000000";
+const char *nwkSKey = "00000000000000000000000000000000";
+const char *appSKey = "00000000000000000000000000000000";
+
+char myStr[240];
+char outStr[255];
+byte recvStatus = 0;
+
+const sRFM_pins RFM_pins = {
+  .CS = 6,
+  .RST = 7,
+  .DIO0 = 8,
+  .DIO1 = 9,
+  .DIO2 = -1,
+  .DIO5 = -1,
+};
+
+
+void setup() {
+  // Setup loraid access
+  Serial.begin(115200);
+  Serial.println("Start..");
+  if(!lora.init()){
+    Serial.println("RFM95 not detected");
+    delay(5000);
+    return;
+  }
+
+  // Set LoRaWAN Class change CLASS_A or CLASS_C
+  lora.setDeviceClass(CLASS_C);
+
+  // Set Data Rate
+  lora.setDataRate(SF7BW125);
+
+  // set channel to random
+  lora.setChannel(MULTI);
+
+  // Put ABP Key and DevAddress here
+  lora.setNwkSKey(nwkSKey);
+  lora.setAppSKey(appSKey);
+  lora.setDevAddr(devAddr);
+}
+
+void loop() {
+
+  if(Serial.available()){
+    uint8_t i = 0;
+    while(Serial.available()>0){
+      myStr[i++]=Serial.read();
+      if(i>240){
+        Serial.println("[ERROR] payload maximo alcanzado");
+        break;
+        }
+      }
+    Serial.print("Uplink: ");
+    Serial.println(myStr);
+    lora.sendUplink(myStr, strlen(myStr), 0, 1);
+  }
+
+  recvStatus = lora.readData(outStr);
+  if(recvStatus) {
+    Serial.print("Downlink: ");
+    Serial.println(outStr);
+  }
+
+  // Check Lora RX
+  lora.update();
+}

src/arduino-rfm/Config.h

@@ -16,8 +16,8 @@
 #ifdef US_915
     //Select the subband youre working on
     // make sure your gateway is working in one of these bands
-    //#define SUBND_0     // 902.3 - 903.7 Mhz
-    #define SUBND_1     // 903.9 - 905.3 Mhz TTN
+    #define SUBND_0     // 902.3 - 903.7 Mhz
+    //#define SUBND_1     // 903.9 - 905.3 Mhz TTN
     //#define SUBND_2     // 905.5 - 906.9 Mhz
     //#define SUBND_3     // 907.1 - 908.5 Mhz
     //#define SUBND_4     // 908.7 - 910.1 Mhz