good morning,
I’m trying to use a basic standard sketch to send data over OTAA to TTN.
The sketch is comming from the LMIC library.
If I send the data with the confirmed flag, I get the TX_COMPLETE Event and I can reschedule the next windows. If I don’t use it, I’m never getting an answer from the gataway and then not able to reschedule.
The code below.
#include <Arduino.h>
#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
#include <SSD1306.h>
#include <hcsr04.h>
// This EUI must be in little-endian format, so least-significant-byte
// first. When copying an EUI from ttnctl output, this means to reverse
// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
// 0x70.
static const u1_t PROGMEM APPEUI[8]={ };
void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
// This should also be in little endian format, see above.
static const u1_t PROGMEM DEVEUI[8]={ } ;
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In
// practice, a key taken from ttnctl can be copied as-is.
// The key shown here is the semtech default key.
static const u1_t PROGMEM APPKEY[16] = { };
void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
static uint8_t mydata[] = "Hello, world!";
static osjob_t sendjob;
// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 3600;
// Pin mapping
const lmic_pinmap lmic_pins = {
.nss = 18,
.rxtx = LMIC_UNUSED_PIN,
.rst = 14,
.dio = {26, 33, 32},
};
#define OLED_I2C_ADDR 0x3C
#define OLED_RESET 16
#define OLED_SDA 21
#define OLED_SCL 22
SSD1306 display (OLED_I2C_ADDR, OLED_SDA, OLED_SCL);
#define TRIG_PIN 25
#define ECHO_PIN 34
UltraSonicDistanceSensor distanceSensor(TRIG_PIN, ECHO_PIN);
char TTN_response[30];
void do_send(osjob_t* j){
// Check if there is not a current TX/RX job running
if (LMIC.opmode & OP_TXRXPEND) {
Serial.println(F("OP_TXRXPEND, not sending"));
} else {
int distance = distanceSensor.measureDistanceCm();
Serial.println(distance);
mydata[0] = highByte(distance);
mydata[1] = lowByte(distance);
display.drawString(0,40,"Distance: " + String(distance)+ " cm");
display.display();
LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
Serial.println(F("Packet queued"));
display.drawString(0, 20, "PACKET QUEUED");
}
// Next TX is scheduled after TX_COMPLETE event.
}
void onEvent (ev_t ev) {
Serial.print(os_getTime());
Serial.print(": ");
switch(ev) {
case EV_SCAN_TIMEOUT:
Serial.println(F("EV_SCAN_TIMEOUT"));
break;
case EV_BEACON_FOUND:
Serial.println(F("EV_BEACON_FOUND"));
break;
case EV_BEACON_MISSED:
Serial.println(F("EV_BEACON_MISSED"));
break;
case EV_BEACON_TRACKED:
Serial.println(F("EV_BEACON_TRACKED"));
break;
case EV_JOINING:
Serial.println(F("EV_JOINING"));
break;
case EV_JOINED:
//display.clear();
display.drawString(0 , 0 , "Joined!");
display.display();
Serial.println(F("EV_JOINED"));
// Disable link check validation (automatically enabled
// during join, but not supported by TTN at this time).
LMIC_setLinkCheckMode(0);
break;
case EV_RFU1:
Serial.println(F("EV_RFU1"));
break;
case EV_JOIN_FAILED:
Serial.println(F("EV_JOIN_FAILED"));
break;
case EV_REJOIN_FAILED:
Serial.println(F("EV_REJOIN_FAILED"));
break;
break;
case EV_TXCOMPLETE:
Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
display.clear();
display.drawString (0, 0, "EV_TXCOMPLETE event!");
if (LMIC.txrxFlags & TXRX_ACK) {
Serial.println(F("Received ack"));
display.drawString (0, 20, "Received ACK.");
}
// Schedule next transmission
os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
break;
case EV_LOST_TSYNC:
Serial.println(F("EV_LOST_TSYNC"));
break;
case EV_RESET:
Serial.println(F("EV_RESET"));
break;
case EV_RXCOMPLETE:
// data received in ping slot
Serial.println(F("EV_RXCOMPLETE"));
break;
case EV_LINK_DEAD:
Serial.println(F("EV_LINK_DEAD"));
break;
case EV_LINK_ALIVE:
Serial.println(F("EV_LINK_ALIVE"));
break;
default:
Serial.println(F("Unknown event"));
break;
}
}
void setup() {
Serial.begin(115200);
Serial.println(F("Starting"));
#ifdef VCC_ENABLE
// For Pinoccio Scout boards
pinMode(VCC_ENABLE, OUTPUT);
digitalWrite(VCC_ENABLE, HIGH);
delay(1000);
#endif
display.init ();
display.flipScreenVertically ();
display.setFont (ArialMT_Plain_10);
display.setTextAlignment (TEXT_ALIGN_LEFT);
display.drawString (0, 0, "Starting....");
display.display ();
// LMIC init
os_init();
// Reset the MAC state. Session and pending data transfers will be discarded.
LMIC_reset();
// Start job (sending automatically starts OTAA too)
do_send(&sendjob);
}
void loop() {
os_runloop_once();
}
I can’t find what I did wrong.
Thanks in advance for you help
Patrice
