osugiw commented 2 years ago

Hi everyone, currently I'm working on ESP32 and SIM7000C Waveshare NB-IOT . What I'm trying to do is sending AT Command from Serial monitor to SIM7000C Waveshare extension board through serial communication (RX and TX). The wiring diagram that I use look like this:

I'm using code example from TinyGSM which is ALLFunctions example and changing the modem type into SIM7000 and add hardwareserial code. here's the code:

`/** *

TinyGSM Getting Started guide:
https://tiny.cc/tinygsm-readme
NOTE:
Some of the functions may be unavailable for your modem.
Just comment them out.
**/

// Select your modem: //#define TINY_GSM_MODEM_SIM800 // #define TINY_GSM_MODEM_SIM808 // #define TINY_GSM_MODEM_SIM868 // #define TINY_GSM_MODEM_SIM900

define TINY_GSM_MODEM_SIM7000

// #define TINY_GSM_MODEM_SIM7000SSL // #define TINY_GSM_MODEM_SIM7080 // #define TINY_GSM_MODEM_SIM5360 // #define TINY_GSM_MODEM_SIM7600 // #define TINY_GSM_MODEM_UBLOX // #define TINY_GSM_MODEM_SARAR4 // #define TINY_GSM_MODEM_M95 // #define TINY_GSM_MODEM_BG96 // #define TINY_GSM_MODEM_A6 // #define TINY_GSM_MODEM_A7 // #define TINY_GSM_MODEM_M590 // #define TINY_GSM_MODEM_MC60 // #define TINY_GSM_MODEM_MC60E // #define TINY_GSM_MODEM_ESP8266 // #define TINY_GSM_MODEM_XBEE // #define TINY_GSM_MODEM_SEQUANS_MONARCH

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

define SerialMon Serial

// Set serial for AT commands (to the module) // Use Hardware Serial on Mega, Leonardo, Micro

ifndef __AVR_ATmega328P__

define SerialAT Serial1

// or Software Serial on Uno, Nano

else

include

//SoftwareSerial SerialAT(2, 3); // RX, TX HardwareSerial Serial1(1);

define SerialAT Serial1

endif

// See all AT commands, if wanted // #define DUMP_AT_COMMANDS

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

define TINY_GSM_DEBUG SerialMon

// Range to attempt to autobaud // NOTE: DO NOT AUTOBAUD in production code. Once you've established // communication, set a fixed baud rate using modem.setBaud(#).

define GSM_AUTOBAUD_MIN 9600

define GSM_AUTOBAUD_MAX 57600

// Add a reception delay, if needed. // This may be needed for a fast processor at a slow baud rate. // #define TINY_GSM_YIELD() { delay(2); }

/*

Tests enabled */
define TINY_GSM_TEST_GPRS true

define TINY_GSM_TEST_WIFI false

define TINY_GSM_TEST_TCP true

define TINY_GSM_TEST_SSL true

define TINY_GSM_TEST_CALL false

define TINY_GSM_TEST_SMS false

define TINY_GSM_TEST_USSD false

define TINY_GSM_TEST_BATTERY true

define TINY_GSM_TEST_TEMPERATURE true

define TINY_GSM_TEST_GSM_LOCATION false

define TINY_GSM_TEST_NTP false

define TINY_GSM_TEST_TIME false

define TINY_GSM_TEST_GPS false

// disconnect and power down modem after tests

define TINY_GSM_POWERDOWN false

// set GSM PIN, if any

define GSM_PIN ""

// Set phone numbers, if you want to test SMS and Calls // #define SMS_TARGET "+380xxxxxxxxx" // #define CALL_TARGET "+380xxxxxxxxx"

// Your GPRS credentials, if any const char apn[] = "internet"; // const char apn[] = "ibasis.iot"; const char gprsUser[] = ""; const char gprsPass[] = "";

// Your WiFi connection credentials, if applicable const char wifiSSID[] = "*"; const char wifiPass[] = "**";

// Server details to test TCP/SSL const char server[] = "vsh.pp.ua"; const char resource[] = "/TinyGSM/logo.txt";

include

if TINY_GSM_TEST_GPRS && not defined TINY_GSM_MODEM_HAS_GPRS

undef TINY_GSM_TEST_GPRS

undef TINY_GSM_TEST_WIFI

define TINY_GSM_TEST_GPRS false

define TINY_GSM_TEST_WIFI true

endif

if TINY_GSM_TEST_WIFI && not defined TINY_GSM_MODEM_HAS_WIFI

undef TINY_GSM_USE_GPRS

undef TINY_GSM_USE_WIFI

define TINY_GSM_USE_GPRS true

define TINY_GSM_USE_WIFI false

endif

ifdef DUMP_AT_COMMANDS

include

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

else

TinyGsm modem(SerialAT);

endif

void setup() { // Set console baud rate SerialMon.begin(115200); delay(10); SerialAT.begin(115200,SERIAL_8N1,16,17,false); delay(3000); // !!!!!!!!!!! // Set your reset, enable, power pins here // !!!!!!!!!!!

DBG("Wait..."); delay(6000);

// Set GSM module baud rate TinyGsmAutoBaud(SerialAT, GSM_AUTOBAUD_MIN, GSM_AUTOBAUD_MAX); // SerialAT.begin(9600); }

void loop() { // Restart takes quite some time // To skip it, call init() instead of restart() DBG("Initializing modem..."); if (!modem.restart()) { // if (!modem.init()) { DBG("Failed to restart modem, delaying 10s and retrying"); // restart autobaud in case GSM just rebooted // TinyGsmAutoBaud(SerialAT, GSM_AUTOBAUD_MIN, GSM_AUTOBAUD_MAX); return; }

String name = modem.getModemName(); DBG("Modem Name:", name);

String modemInfo = modem.getModemInfo(); DBG("Modem Info:", modemInfo);

if TINY_GSM_TEST_GPRS

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

endif

if TINY_GSM_TEST_WIFI

DBG("Setting SSID/password..."); if (!modem.networkConnect(wifiSSID, wifiPass)) { DBG(" fail"); delay(10000); return; } SerialMon.println(" success");

endif

if TINY_GSM_TEST_GPRS && defined TINY_GSM_MODEM_XBEE

// The XBee must run the gprsConnect function BEFORE waiting for network! modem.gprsConnect(apn, gprsUser, gprsPass);

endif

DBG("Waiting for network..."); if (!modem.waitForNetwork(600000L, true)) { delay(10000); return; }

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

if TINY_GSM_TEST_GPRS

DBG("Connecting to", apn); if (!modem.gprsConnect(apn, gprsUser, gprsPass)) { delay(10000); return; }

bool res = modem.isGprsConnected(); DBG("GPRS status:", res ? "connected" : "not connected");

String ccid = modem.getSimCCID(); DBG("CCID:", ccid);

String imei = modem.getIMEI(); DBG("IMEI:", imei);

String imsi = modem.getIMSI(); DBG("IMSI:", imsi);

String cop = modem.getOperator(); DBG("Operator:", cop);

IPAddress local = modem.localIP(); DBG("Local IP:", local);

int csq = modem.getSignalQuality(); DBG("Signal quality:", csq);

endif

if TINY_GSM_TEST_USSD && defined TINY_GSM_MODEM_HAS_SMS

String ussd_balance = modem.sendUSSD("*111#"); DBG("Balance (USSD):", ussd_balance);

String ussd_phone_num = modem.sendUSSD("*161#"); DBG("Phone number (USSD):", ussd_phone_num);

endif

if TINY_GSM_TEST_TCP && defined TINY_GSM_MODEM_HAS_TCP

TinyGsmClient client(modem, 0); const int port = 80; DBG("Connecting to", server); if (!client.connect(server, port)) { DBG("... failed"); } else { // Make a HTTP GET request: client.print(String("GET ") + resource + " HTTP/1.0\r\n"); client.print(String("Host: ") + server + "\r\n"); client.print("Connection: close\r\n\r\n");

// Wait for data to arrive
uint32_t start = millis();
while (client.connected() && !client.available() &&
       millis() - start < 30000L) {
  delay(100);
};

// Read data
start          = millis();
char logo[640] = {
    '\0',
};
int read_chars = 0;
while (client.connected() && millis() - start < 10000L) {
  while (client.available()) {
    logo[read_chars]     = client.read();
    logo[read_chars + 1] = '\0';
    read_chars++;
    start = millis();
  }
}
SerialMon.println(logo);
DBG("#####  RECEIVED:", strlen(logo), "CHARACTERS");
client.stop();

}

endif

if TINY_GSM_TEST_SSL && defined TINY_GSM_MODEM_HAS_SSL

TinyGsmClientSecure secureClient(modem, 1); const int securePort = 443; DBG("Connecting securely to", server); if (!secureClient.connect(server, securePort)) { DBG("... failed"); } else { // Make a HTTP GET request: secureClient.print(String("GET ") + resource + " HTTP/1.0\r\n"); secureClient.print(String("Host: ") + server + "\r\n"); secureClient.print("Connection: close\r\n\r\n");

// Wait for data to arrive
uint32_t startS = millis();
while (secureClient.connected() && !secureClient.available() &&
       millis() - startS < 30000L) {
  delay(100);
};

// Read data
startS          = millis();
char logoS[640] = {
    '\0',
};
int read_charsS = 0;
while (secureClient.connected() && millis() - startS < 10000L) {
  while (secureClient.available()) {
    logoS[read_charsS]     = secureClient.read();
    logoS[read_charsS + 1] = '\0';
    read_charsS++;
    startS = millis();
  }
}
SerialMon.println(logoS);
DBG("#####  RECEIVED:", strlen(logoS), "CHARACTERS");
secureClient.stop();

}

endif

if TINY_GSM_TEST_CALL && defined TINY_GSM_MODEM_HAS_CALLING && \

defined                       CALL_TARGET

DBG("Calling:", CALL_TARGET);

// This is NOT supported on M590 res = modem.callNumber(CALL_TARGET); DBG("Call:", res ? "OK" : "fail");

if (res) { delay(1000L);

// Play DTMF A, duration 1000ms
modem.dtmfSend('A', 1000);

// Play DTMF 0..4, default duration (100ms)
for (char tone = '0'; tone <= '4'; tone++) { modem.dtmfSend(tone); }

delay(5000);

res = modem.callHangup();
DBG("Hang up:", res ? "OK" : "fail");

}

endif

if TINY_GSM_TEST_SMS && defined TINY_GSM_MODEM_HAS_SMS && defined SMS_TARGET

res = modem.sendSMS(SMS_TARGET, String("Hello from ") + imei); DBG("SMS:", res ? "OK" : "fail");

// This is only supported on SIMxxx series res = modem.sendSMS_UTF8_begin(SMS_TARGET); if (res) { auto stream = modem.sendSMS_UTF8_stream(); stream.print(F("Привіііт! Print number: ")); stream.print(595); res = modem.sendSMS_UTF8_end(); } DBG("UTF8 SMS:", res ? "OK" : "fail");

endif

if TINY_GSM_TEST_GSM_LOCATION && defined TINY_GSM_MODEM_HAS_GSM_LOCATION

float lat = 0; float lon = 0; float accuracy = 0; int year = 0; int month = 0; int day = 0; int hour = 0; int min = 0; int sec = 0; for (int8_t i = 15; i; i--) { DBG("Requesting current GSM location"); if (modem.getGsmLocation(&lat, &lon, &accuracy, &year, &month, &day, &hour, &min, &sec)) { DBG("Latitude:", String(lat, 8), "\tLongitude:", String(lon, 8)); DBG("Accuracy:", accuracy); DBG("Year:", year, "\tMonth:", month, "\tDay:", day); DBG("Hour:", hour, "\tMinute:", min, "\tSecond:", sec); break; } else { DBG("Couldn't get GSM location, retrying in 15s."); delay(15000L); } } DBG("Retrieving GSM location again as a string"); String location = modem.getGsmLocation(); DBG("GSM Based Location String:", location);

endif

if TINY_GSM_TEST_GPS && defined TINY_GSM_MODEM_HAS_GPS

DBG("Enabling GPS/GNSS/GLONASS and waiting 15s for warm-up"); modem.enableGPS(); delay(15000L); float lat2 = 0; float lon2 = 0; float speed2 = 0; float alt2 = 0; int vsat2 = 0; int usat2 = 0; float accuracy2 = 0; int year2 = 0; int month2 = 0; int day2 = 0; int hour2 = 0; int min2 = 0; int sec2 = 0; for (int8_t i = 15; i; i--) { DBG("Requesting current GPS/GNSS/GLONASS location"); if (modem.getGPS(&lat2, &lon2, &speed2, &alt2, &vsat2, &usat2, &accuracy2, &year2, &month2, &day2, &hour2, &min2, &sec2)) { DBG("Latitude:", String(lat2, 8), "\tLongitude:", String(lon2, 8)); DBG("Speed:", speed2, "\tAltitude:", alt2); DBG("Visible Satellites:", vsat2, "\tUsed Satellites:", usat2); DBG("Accuracy:", accuracy2); DBG("Year:", year2, "\tMonth:", month2, "\tDay:", day2); DBG("Hour:", hour2, "\tMinute:", min2, "\tSecond:", sec2); break; } else { DBG("Couldn't get GPS/GNSS/GLONASS location, retrying in 15s."); delay(15000L); } } DBG("Retrieving GPS/GNSS/GLONASS location again as a string"); String gps_raw = modem.getGPSraw(); DBG("GPS/GNSS Based Location String:", gps_raw); DBG("Disabling GPS"); modem.disableGPS();

endif

if TINY_GSM_TEST_NTP && defined TINY_GSM_MODEM_HAS_NTP

DBG("Asking modem to sync with NTP"); modem.NTPServerSync("132.163.96.5", 20);

endif

if TINY_GSM_TEST_TIME && defined TINY_GSM_MODEM_HAS_TIME

int year3 = 0; int month3 = 0; int day3 = 0; int hour3 = 0; int min3 = 0; int sec3 = 0; float timezone = 0; for (int8_t i = 5; i; i--) { DBG("Requesting current network time"); if (modem.getNetworkTime(&year3, &month3, &day3, &hour3, &min3, &sec3, &timezone)) { DBG("Year:", year3, "\tMonth:", month3, "\tDay:", day3); DBG("Hour:", hour3, "\tMinute:", min3, "\tSecond:", sec3); DBG("Timezone:", timezone); break; } else { DBG("Couldn't get network time, retrying in 15s."); delay(15000L); } } DBG("Retrieving time again as a string"); String time = modem.getGSMDateTime(DATE_FULL); DBG("Current Network Time:", time);

endif

if TINY_GSM_TEST_BATTERY && defined TINY_GSM_MODEM_HAS_BATTERY

uint8_t chargeState = -99; int8_t percent = -99; uint16_t milliVolts = -9999; modem.getBattStats(chargeState, percent, milliVolts); DBG("Battery charge state:", chargeState); DBG("Battery charge 'percent':", percent); DBG("Battery voltage:", milliVolts / 1000.0F);

endif

if TINY_GSM_TEST_TEMPERATURE && defined TINY_GSM_MODEM_HAS_TEMPERATURE

float temp = modem.getTemperature(); DBG("Chip temperature:", temp);

endif

if TINY_GSM_POWERDOWN

if TINY_GSM_TEST_GPRS

modem.gprsDisconnect(); delay(5000L); if (!modem.isGprsConnected()) { DBG("GPRS disconnected"); } else { DBG("GPRS disconnect: Failed."); }

endif

if TINY_GSM_TEST_WIFI

modem.networkDisconnect(); DBG("WiFi disconnected");

endif

// Try to power-off (modem may decide to restart automatically) // To turn off modem completely, please use Reset/Enable pins modem.poweroff(); DBG("Poweroff.");

endif

DBG("End of tests.");

// Do nothing forevermore while (true) { modem.maintain(); } }`

It couldn't communicate with the extension board because the results look like this:

Any advice or help would be appreciate! Thanks everyone!

osugiw commented 2 years ago

The documentation:

https://www.waveshare.net/wiki/SIM7000C_NB-IoT_HAT

Koivader commented 1 year ago

@osugiw How did you solve the problem. I have a similar problem.

osugiw commented 1 year ago

@osugiw How did you solve the problem. I have a similar problem.

Sorry, I little forget how I solved this problem, If I'm not wrong my problem that time because of the baudrate of UART

osugiw commented 1 year ago

@osugiw How did you solve the problem. I have a similar problem.

I have just remembered, my problem that time was the sim card provider isn't compatible with SIM7000. You have to look up the datasheet for the bandwidth frequencies that supported in SIM7000.

Koivader commented 1 year ago

Thank you for your quick answer. Unfortunately this wasn't my problem.

In case someone has a similar issue than I have, for me it was, that I used the wrong HardwareSerial Pins.

#define ESP32_TX 16  // ESP32 hardware serial RX2 (GPIO16)
#define ESP32_RX 17  // ESP32 hardware serial TX2 (GPIO17)
// For ESP32 hardware serial
#include <HardwareSerial.h>
HardwareSerial SerialAT(1);

and in setup(): SerialAT.begin(115200, SERIAL_8N1, ESP32_RX,ESP32_TX); // baud rate, protocol, ESP32 RX pin, ESP32 TX pin

Edit: Changed Code Format

aleemzzz commented 6 months ago

Thank you for your quick answer. Unfortunately this wasn't my problem.

In case someone has a similar issue than I have, for me it was, that I used the wrong HardwareSerial Pins.
#define ESP32_TX 16  // ESP32 hardware serial RX2 (GPIO16)
#define ESP32_RX 17  // ESP32 hardware serial TX2 (GPIO17)
// For ESP32 hardware serial
#include <HardwareSerial.h>
HardwareSerial SerialAT(1);
and in setup(): SerialAT.begin(115200, SERIAL_8N1, ESP32_RX,ESP32_TX); // baud rate, protocol, ESP32 RX pin, ESP32 TX pin

Edit: Changed Code Format

Hi , there can you provide me the code of your project?

Koivader commented 6 months ago

Hi, I was starting with this example https://github.com/vshymanskyy/TinyGSM/blob/master/examples/MqttClient/MqttClient.ino.

Here is my complete code, although I'm not too sure if it was working. 😅

/**************************************************************
 *
 * For this example, you need to install PubSubClient library:
 *   https://github.com/knolleary/pubsubclient
 *   or from http://librarymanager/all#PubSubClient
 *
 * TinyGSM Getting Started guide:
 *   https://tiny.cc/tinygsm-readme
 *
 * For more MQTT examples, see PubSubClient library
 *
 **************************************************************
 * This example connects to HiveMQ's showcase broker.
 *
 * You can quickly test sending and receiving messages from the HiveMQ webclient
 * available at http://www.hivemq.com/demos/websocket-client/.
 *
 * Subscribe to the topic GsmClientTest/ledStatus
 * Publish "toggle" to the topic GsmClientTest/led and the LED on your board
 * should toggle and you should see a new message published to
 * GsmClientTest/ledStatus with the newest LED status.
 *
 **************************************************************/

// Select your modem:
// #define TINY_GSM_MODEM_SIM800
// #define TINY_GSM_MODEM_SIM808
// #define TINY_GSM_MODEM_SIM868
// #define TINY_GSM_MODEM_SIM900
#define TINY_GSM_MODEM_SIM7000
// #define TINY_GSM_MODEM_SIM7000SSL
// #define TINY_GSM_MODEM_SIM7080
// #define TINY_GSM_MODEM_SIM5360
// #define TINY_GSM_MODEM_SIM7600
// #define TINY_GSM_MODEM_UBLOX
// #define TINY_GSM_MODEM_SARAR4
// #define TINY_GSM_MODEM_M95
// #define TINY_GSM_MODEM_BG96
// #define TINY_GSM_MODEM_A6
// #define TINY_GSM_MODEM_A7
// #define TINY_GSM_MODEM_M590
// #define TINY_GSM_MODEM_MC60
// #define TINY_GSM_MODEM_MC60E
// #define TINY_GSM_MODEM_ESP8266
// #define TINY_GSM_MODEM_XBEE
// #define TINY_GSM_MODEM_SEQUANS_MONARCH

#include "mySim7000.h"
#include "mySim7x00.h"

// Set serial for debug console (to the Serial Monitor, default speed 115200)
#define SerialMon Serial

#define ESP32_TX 16  // ESP32 hardware serial RX2 (GPIO16)
#define ESP32_RX 17  // ESP32 hardware serial TX2 (GPIO17)
// For ESP32 hardware serial
#include <HardwareSerial.h>
// HardwareSerial SerialAT(1);

/*
// Set serial for AT commands (to the module)
// Use Hardware Serial on Mega, Leonardo, Micro
#ifndef __AVR_ATmega328P__
#define SerialAT Serial1

// or Software Serial on Uno, Nano
#else
#include <SoftwareSerial.h>
SoftwareSerial SerialAT(2, 3);  // RX, TX
#endif
*/

// See all AT commands, if wanted
// #define DUMP_AT_COMMANDS

// Define the serial console for debug prints, if needed
#define TINY_GSM_DEBUG SerialMon

// Range to attempt to autobaud
// NOTE:  DO NOT AUTOBAUD in production code.  Once you've established
// communication, set a fixed baud rate using modem.setBaud(#).
#define GSM_AUTOBAUD_MIN 9600
#define GSM_AUTOBAUD_MAX 115200
// #define GSM_AUTOBAUD_MAX 9600

// Add a reception delay, if needed.
// This may be needed for a fast processor at a slow baud rate.
// #define TINY_GSM_YIELD() { delay(2); }

// Define how you're planning to connect to the internet.
// This is only needed for this example, not in other code.
#define TINY_GSM_USE_GPRS true
#define TINY_GSM_USE_WIFI false

// set GSM PIN, if any
#define GSM_PIN ""

// Your GPRS credentials, if any
const char apn[] = "scs.telekom.tma.iot";
const char gprsUser[] = "";
const char gprsPass[] = "";

// Your WiFi connection credentials, if applicable
const char wifiSSID[] = "YourSSID";
const char wifiPass[] = "YourWiFiPass";

// MQTT details
const char* broker = "IP";
// const uint16_t mqttPort = 1883;
const unsigned short mqttPort = 35648;

const char* topicLed = "GsmClientTest/led";
const char* topicInit = "GsmClientTest/init";
const char* topicLedStatus = "GsmClientTest/ledStatus";

#include <PubSubClient.h>
#include <TinyGsmClient.h>

// Just in case someone defined the wrong thing..
#if TINY_GSM_USE_GPRS && not defined TINY_GSM_MODEM_HAS_GPRS
#undef TINY_GSM_USE_GPRS
#undef TINY_GSM_USE_WIFI
#define TINY_GSM_USE_GPRS false
#define TINY_GSM_USE_WIFI true
#endif
#if TINY_GSM_USE_WIFI && not defined TINY_GSM_MODEM_HAS_WIFI
#undef TINY_GSM_USE_GPRS
#undef TINY_GSM_USE_WIFI
#define TINY_GSM_USE_GPRS true
#define TINY_GSM_USE_WIFI false
#endif

#ifdef DUMP_AT_COMMANDS
#include <StreamDebugger.h>
StreamDebugger debugger(SerialAT, SerialMon);
TinyGsm modem(debugger);
#else
// TinyGsm modem(SerialAT);
#endif
// TinyGsmClient client(modem);
// PubSubClient mqtt(client);

#define LED_PIN 13
int ledStatus = LOW;

uint32_t lastReconnectAttempt = 0;

uint32_t loop_counter = 0;

uint32_t rate = GSM_AUTOBAUD_MAX;

sim7000 SIM7000X(1, rate, ESP32_RX, ESP32_TX);

void setup() {
    char* apn = (char*)"scs.telekom.tma.iot";
    // char* apn = (char*)"lpwa.vodafone.com";
    // Set console baud rate
    SerialMon.begin(115200);
    // Start at default SIM7000 shield baud rate
    // SerialAT.begin(rate, SERIAL_8N1, ESP32_RX,
    //                ESP32_TX);  // baud rate, protocol, ESP32 RX pin, ESP32 TX pin
    delay(10);

    pinMode(LED_PIN, OUTPUT);

    // !!!!!!!!!!!
    // Set your reset, enable, power pins here
    // !!!!!!!!!!!

    SerialMon.println("Wait...");
    // SIM7000X.Send_AT_Command("AT+CGATT?", 1000, "+CGATT: 1", "+CGATT: 0");
    // SIM7000X.Get_Signal_Value();

    // if (SIM7000X.Set_Network_APN(apn)) {
    //     printf("Setting network apn to %s successfully.\n", apn);
    // } else if (SIM7000X.Get_Current_APN(apn)) {
    //     printf("Current network apn is %s.\n", apn);
    // } else {
    //     printf("Setting network apn to %s failed.\n", apn);
    // }
    // SIM7000X.Bring_Up_Connection();
    uint8_t bands[] = {8,20};
    uint8_t band_count = 2;
    bool ret = SIM7000X.InitConnection(apn, PreferredLTEMode::NB_IoT, bands, band_count);
    if (!ret) {
        printf("Init connection failed.\n");
        return;
    }
    SIM7000X.Get_Local_IP();
    SIM7000X.Open_Socket_Client("UDP", "172.27.131.100", 15683);

    Serial.println("Sending data...");
    uint32_t randomInt = random(10000, 99999);
    char buffer[260];
    char* message = (char*)"ESP32 Message NB-IoT 32 Byte Test Nachricht 01NB-IoT 32 Byte Test Nachricht "
        "01NB-IoT 32 Byte Test Nachricht 01NB-IoT 32 Byte Test Nachricht 01NB-IoT 32 Byte Test Nachricht "
        "01NB-IoT 32 Byte Test Nachricht 01NB-IoT 32 Byte Test Nachricht 01NB-IoT 32 B";
    sprintf(buffer, "%d: %s", randomInt, message);

    SIM7000X.Send_Data(buffer, 
        256);
    Serial.println("Data sent.");
    // Serial.println("Receiving data...\n");
    SIM7000X.Close_Connect();
    Serial.println("Sending complete");

    /*
    // Set GSM module baud rate
    TinyGsmAutoBaud(SerialAT, GSM_AUTOBAUD_MIN, GSM_AUTOBAUD_MAX);
    // SerialAT.begin(9600);
    delay(6000);

    // Restart takes quite some time
    // To skip it, call init() instead of restart()
    SerialMon.println("Initializing modem...");
    modem.setPreferredMode(2);
    // modem.restart();
    modem.init();
    */
}

void loop() {
    // if ((loop_counter + 10) % 100 == 0) {
    //     SerialMon.print("Signal quality:");
    //     SerialMon.println(modem.getSignalQuality());
    //     modem.sendAT(GF("+CSQ"));
    //     SerialMon.print("Signal quality CMD send: ");
    //     SerialMon.print(modem.waitResponse(GF("+CSQ:")));
    //     SerialMon.println(modem.stream.readStringUntil('\n'));

    //     SerialMon.print("Is network connected: ");
    //     SerialMon.println(modem.getLocalIP());
    //     SerialMon.println(modem.isNetworkConnected());
    // }
    // if (loop_counter == 100) {
    //     SerialMon.println("sending UDP Message");
    // }

    delay(300);
    loop_counter++;
}

vshymanskyy / TinyGSM

Problem connecting ESP32 to SIM7000C Waveshare NB-IOT Extension board #564

define TINY_GSM_MODEM_SIM7000

define SerialMon Serial

ifndef __AVR_ATmega328P__

define SerialAT Serial1

else

include

define SerialAT Serial1

endif

define TINY_GSM_DEBUG SerialMon

define GSM_AUTOBAUD_MIN 9600

define GSM_AUTOBAUD_MAX 57600

define TINY_GSM_TEST_GPRS true

define TINY_GSM_TEST_WIFI false

define TINY_GSM_TEST_TCP true

define TINY_GSM_TEST_SSL true

define TINY_GSM_TEST_CALL false

define TINY_GSM_TEST_SMS false

define TINY_GSM_TEST_USSD false

define TINY_GSM_TEST_BATTERY true

define TINY_GSM_TEST_TEMPERATURE true

define TINY_GSM_TEST_GSM_LOCATION false

define TINY_GSM_TEST_NTP false

define TINY_GSM_TEST_TIME false

define TINY_GSM_TEST_GPS false

define TINY_GSM_POWERDOWN false

define GSM_PIN ""

include

if TINY_GSM_TEST_GPRS && not defined TINY_GSM_MODEM_HAS_GPRS

undef TINY_GSM_TEST_GPRS

undef TINY_GSM_TEST_WIFI

define TINY_GSM_TEST_GPRS false

define TINY_GSM_TEST_WIFI true

endif

if TINY_GSM_TEST_WIFI && not defined TINY_GSM_MODEM_HAS_WIFI

undef TINY_GSM_USE_GPRS

undef TINY_GSM_USE_WIFI

define TINY_GSM_USE_GPRS true

define TINY_GSM_USE_WIFI false

endif

ifdef DUMP_AT_COMMANDS

include

else

endif

if TINY_GSM_TEST_GPRS

endif

if TINY_GSM_TEST_WIFI

endif

if TINY_GSM_TEST_GPRS && defined TINY_GSM_MODEM_XBEE

endif

if TINY_GSM_TEST_GPRS

endif

if TINY_GSM_TEST_USSD && defined TINY_GSM_MODEM_HAS_SMS

endif

if TINY_GSM_TEST_TCP && defined TINY_GSM_MODEM_HAS_TCP

endif

if TINY_GSM_TEST_SSL && defined TINY_GSM_MODEM_HAS_SSL

endif

if TINY_GSM_TEST_CALL && defined TINY_GSM_MODEM_HAS_CALLING && \

endif

if TINY_GSM_TEST_SMS && defined TINY_GSM_MODEM_HAS_SMS && defined SMS_TARGET

endif

if TINY_GSM_TEST_GSM_LOCATION && defined TINY_GSM_MODEM_HAS_GSM_LOCATION

endif

if TINY_GSM_TEST_GPS && defined TINY_GSM_MODEM_HAS_GPS

endif

if TINY_GSM_TEST_NTP && defined TINY_GSM_MODEM_HAS_NTP

endif

if TINY_GSM_TEST_TIME && defined TINY_GSM_MODEM_HAS_TIME

endif

if TINY_GSM_TEST_BATTERY && defined TINY_GSM_MODEM_HAS_BATTERY

endif

if TINY_GSM_TEST_TEMPERATURE && defined TINY_GSM_MODEM_HAS_TEMPERATURE

endif

if TINY_GSM_POWERDOWN

if TINY_GSM_TEST_GPRS

endif

if TINY_GSM_TEST_WIFI

endif