# Issue LoadProhibited to TTN with LILYGO LORA32 1.6.1

**URL:** <https://www.thethingsnetwork.org/forum/t/issue-loadprohibited-to-ttn-with-lilygo-lora32-1-6-1/64000>\
**Category:** Uncategorized\
**Created:** [July 19, 2023, 2:46pm UTC](https://www.thethingsnetwork.org/forum/t/issue-loadprohibited-to-ttn-with-lilygo-lora32-1-6-1/64000 "2023-07-19T14:46:07Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![cardinal](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/c/b9bd4f/32.png) [@cardinal](https://www.thethingsnetwork.org/forum/u/cardinal)\
**Post date:** [July 19, 2023, 2:46pm UTC](https://www.thethingsnetwork.org/forum/t/issue-loadprohibited-to-ttn-with-lilygo-lora32-1-6-1/64000/1 "2023-07-19T14:46:08Z")

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hi all,  
(sry if my english is not correct, i’m not englishmen)

I’have an and i try send/receive datas on service TTN with ide Arduino 2.0 with file example from Librarie de Thethingnetwork.

1 - I’have install esp32 + Oled + librarie TTNET  
2 - Use example of librarie TTNET, here sendOTAA.ino with modification , i’m europe/France and i success in upload but i have issue next :

> Guru Meditation Error: Core 1 panic’ed (LoadProhibited). Exception was unhandled.
> 
> Core 1 register dump:  
> PC : 0x40086134 PS : 0x00060030 A0 : 0x800d1658 A1 : 0x3ffb26d0  
> A2 : 0x3ffb26e8 A3 : 0x000003aa A4 : 0x000000ff A5 : 0x0000ff00  
> A6 : 0x00ff0000 A7 : 0xff000000 A8 : 0x800d2468 A9 : 0x3ffb2710  
> A10 : 0x3ffb26e8 A11 : 0x00000003 A12 : 0x00000005 A13 : 0x00060423  
> A14 : 0x00060420 A15 : 0x00000001 SAR : 0x0000000e EXCCAUSE: 0x0000001c  
> EXCVADDR: 0x000003aa LBEG : 0x400861d1 LEND : 0x400861e1 LCOUNT : 0xfffffffe
> 
> Backtrace:0x40086131:0x3ffb26d00x400d1655:0x3ffb26e0 0x400d17a7:0x3ffb2770 0x400d1925:0x3ffb2790 0x400d19a9:0x3ffb27b0 0x400d210f:0x3ffb27d0 0x400d12bb:0x3ffb27f0 0x400d4646:0x3ffb2820

Thanks for help.

My code in below:

```auto
#include <TheThingsNetwork.h>
#include <LoRa.h>
#include <string.h>
#include <SPI.h>

// Set your AppEUI and AppKey
 //char TappEui[16]= "0C8B95A5818CFEFF";
 //char TappKey[32]= "3F4774A3F9227CF4C658262E4683ED3E";
char TappEui[17] = {'0', 'C', '8', 'B' ,'9' ,'5','A', '5', '8', '1', '8', 'C', 'F' ,'E', 'F','F','\0'};
char TappKey[33] = {'3','F','4','7','7','4','A','3','F','9','2','2','7','C','F','4','C','6','5','8','2','6','2','E','4','6','8','3','E','D','3','E', '\0'};

const char *appEui = TappEui;
const char *appKey = TappKey;

#define SCK 5 // GPIO5 -- SX1278's SCK
#define MISO 19 // GPIO19 -- SX1278's MISO
#define MOSI 27 // GPIO27 -- SX1278's MOSI
#define SS 18 // GPIO18 -- SX1278's CS
#define RST 23 // GPIO14 -- SX1278's RESET
#define DI0 26 // GPIO26 -- SX1278's IRQ(Interrupt Request)

//#define loraSerial LoRa
//#define debugSerial Serial

// Replace REPLACE_ME with TTN_FP_EU868 or TTN_FP_US915
#define freqPlan TTN_FP_EU868

TheThingsNetwork ttn(LoRa, Serial, freqPlan);

void setup()
{
  //loraSerial.begin(57600);
  Serial.begin(9600);

  Serial.println("LoRa Receiver Callback");
  SPI.begin(SCK,MISO,MOSI,SS);
  LoRa.setPins(SS,RST,DI0);  
    
  if (!LoRa.begin(868E6)) {
    Serial.println("Starting LoRa failed !");
    while (1);
  }

  else Serial.println("Starting LoRa succed" );

  // Wait a maximum of 10s for Serial Monitor
  while (!Serial && millis() < 10000);

  //debugSerial.println("-- STATUS");
  //ttn.showStatus();

  Serial.println("-- JOIN");
  ttn.join(appEui, appKey);
}

void loop()
{
  Serial.println("-- LOOP");

  // Prepare payload of 1 byte to indicate LED status
  byte payload[1];
  payload[0] = (digitalRead(LED_BUILTIN) == HIGH) ? 1 : 0;

  // Send it off
  ttn.sendBytes(payload, sizeof(payload));

  delay(10000);
}

```

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<div class="post-metadata">

**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\
**Post date:** [July 19, 2023, 7:29pm UTC](https://www.thethingsnetwork.org/forum/t/issue-loadprohibited-to-ttn-with-lilygo-lora32-1-6-1/64000/2 "2023-07-19T19:29:40Z")

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TheThingsNetwork library is ONLY for The Things Uno board.

Try [LMIC-node](https://github.com/lnlp/LMIC-node) which is known to work with the TTGO boards.

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<div class="post-metadata">

**Author:** ![cardinal](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/c/b9bd4f/32.png) [@cardinal](https://www.thethingsnetwork.org/forum/u/cardinal)\
**Post date:** [July 20, 2023, 6:46am UTC](https://www.thethingsnetwork.org/forum/t/issue-loadprohibited-to-ttn-with-lilygo-lora32-1-6-1/64000/3 "2023-07-20T06:46:31Z")

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Ah OK , i I’ll try.  
Thanks Nick McCloud,