The modem.localIP() request crashes the ESP32-CAM Al-Thinker with stand alone SIM800L and LilyGo TTGO T-Call ESP32 SIM800L

[woodlist]

Here the dump of TTGO T-Call crash: 23:39:46.537 -> Initializing modem... 23:39:50.179 -> [6657] ### TinyGSM Version: 0.10.9 23:39:50.179 -> [6658] ### TinyGSM Compiled Module: TinyGsmClientSIM800 23:39:50.488 -> [6972] ### Modem: SIMCOM SIM800L 23:39:50.488 -> [6973] ### Modem: SIMCOM SIM800L 23:39:51.508 -> 23:39:51.508 -> Connecting to APN: internet.beeline.am 23:40:13.585 -> [30073] ### Network time and time zone updated. 23:40:13.585 -> [30074] ### Daylight savings time state updated. 23:40:13.890 -> Waiting for network... success 23:40:13.890 -> Network connected 23:40:13.957 -> Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. 23:40:13.957 -> Core 1 register dump: 23:40:13.957 -> PC : 0x400014e8 PS : 0x00060130 A0 : 0x800d3978 A1 : 0x3ffb1f00
23:40:13.957 -> A2 : 0x99498242 A3 : 0x99498240 A4 : 0x000000ff A5 : 0x0000ff00
23:40:13.957 -> A6 : 0x00ff0000 A7 : 0xff000000 A8 : 0x00000000 A9 : 0x3ffb1ed0
23:40:13.957 -> A10 : 0x3ffb1f80 A11 : 0x00000000 A12 : 0x00000001 A13 : 0x0000ff00
23:40:13.957 -> A14 : 0x00ff0000 A15 : 0xff000000 SAR : 0x00000010 EXCCAUSE: 0x0000001c
23:40:13.991 -> EXCVADDR: 0x99498240 LBEG : 0x4000c46c LEND : 0x4000c477 LCOUNT : 0x00000000
23:40:13.991 -> 23:40:13.991 -> Backtrace: 0x400014e8:0x3ffb1f00 0x400d3975:0x3ffb1f10 0x400d3a01:0x3ffb1f30 0x400d297a:0x3ffb1f50 0x400d44a3:0x3ffb1fb0 0x400889d9:0x3ffb1fd0 23:40:13.991 -> 23:40:13.991 -> Rebooting... 23:40:14.025 -> ets Jun 8 2016 00:22:57

[woodlist]

The program code for TTGO T-Call: // Your GPRS credentials (leave empty, if not needed) const char apn[] = "internet.beeline.am"; // APN use https://wiki.apnchanger.org const char gprsUser[] = "internet"; // GPRS User const char gprsPass[] = "internet"; // GPRS Password // SIM card PIN (leave empty, if not defined) const char simPIN[] = "0000";

// TTGO T-Call pins

define MODEM_RST 5

define MODEM_PWKEY 4

define MODEM_POWER_ON 23

define MODEM_TX 27

define MODEM_RX 26

define I2C_SDA 21

define I2C_SCL 22

// Set serial for debug console (to Serial Monitor, default speed 115200)

define SerialMon Serial

// Set serial for AT commands (to SIM800 module)

define SerialAT Serial1

// Configure TinyGSM library

define TINY_GSM_MODEM_SIM800 // Modem is SIM800

define TINY_GSM_RX_BUFFER 1024 // Set RX buffer to 1Kb

// Define the serial console for debug prints, if needed

define TINY_GSM_DEBUG SerialMon

include

include

// Setup a oneWire instance to communicate with any OneWire devices //OneWire oneWire(ONE_WIRE_BUS);

ifdef DUMP_AT_COMMANDS

include

StreamDebugger debugger(SerialAT, SerialMon); TinyGsm modem(debugger);

else

TinyGsm modem(SerialAT);

endif

// TinyGSM Client for Internet connection TinyGsmClient client(modem);

define IP5306_ADDR 0x75

define IP5306_REG_SYS_CTL0 0x00

// I2C for SIM800 (to keep it running when powered from battery) TwoWire I2CPower = TwoWire(0); bool setPowerBoostKeepOn(int en) { I2CPower.beginTransmission(IP5306_ADDR); I2CPower.write(IP5306_REG_SYS_CTL0); if (en) { I2CPower.write(0x37); // Set bit1: 1 enable 0 disable boost keep on } else { I2CPower.write(0x35); // 0x37 is default reg value } return I2CPower.endTransmission() == 0; } void setup() { // put your setup code here, to run once: SerialMon.begin(115200); // Start I2C communication I2CPower.begin(I2C_SDA, I2C_SCL, 400000); // Keep power when running from battery bool isOk = setPowerBoostKeepOn(1); SerialMon.println(String("IP5306 KeepOn ") + (isOk ? "OK" : "FAIL"));

// Set modem reset, enable, power pins pinMode(MODEM_PWKEY, OUTPUT); pinMode(MODEM_RST, OUTPUT); pinMode(MODEM_POWER_ON, OUTPUT); digitalWrite(MODEM_PWKEY, LOW); digitalWrite(MODEM_RST, HIGH); digitalWrite(MODEM_POWER_ON, HIGH);

// Set GSM module baud rate and UART pins SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX); delay(3000);

// Restart SIM800 module, it takes quite some time // To skip it, call init() instead of restart() SerialMon.println("Initializing modem..."); modem.restart(); SerialMon.println(); // use modem.init() if you don't need the complete restart

// Unlock your SIM card with a PIN if needed if (strlen(simPIN) && modem.getSimStatus() != 3 ) { modem.simUnlock(simPIN); }

SerialMon.print("Connecting to APN: "); SerialMon.println(apn); if (!modem.gprsConnect(apn, gprsUser, gprsPass)) { SerialMon.println(" fail"); } SerialMon.print("Waiting for network..."); if (!modem.waitForNetwork()) { SerialMon.println(" fail"); delay(10000); return; } SerialMon.println(" success");

if (modem.isNetworkConnected()) { SerialMon.println("Network connected"); }

SerialMon.println("Local IP:" + modem.localIP());

SerialMon.println("Signal quality:" + modem.getSignalQuality()); }

void loop() { // put your main code here, to run repeatedly: delay(1); }

[SRGDamia1]

Um, I'm pretty sure SerialMon.println("Local IP:" + modem.localIP()); is not valid code. You can't add a string and an IPAddress object like that. Use the getLocalIP() function which actually returns a string.

[woodlist]

Please, write the exact line, which will reveal the IP. By the way, It is not well manner, when you are closing the subject, having not got the acknowledgement from issue opener.

[woodlist]

I do confirmation that the "String IP = modem.getLocalIP();" works fine. Now, the issue is really solved. Thanks for attention.