ArduinoでSIM800Lを使うガイド：SMS送信、リレー制御、電話の発信

1#include <SoftwareSerial.h>
2
3SoftwareSerial sim800(2, 3);        // RX = D2 (SIM800L TXD), TX = D3 (SIM800L RXD, bölücüyle / via divider)
4
5void setup() {
6  Serial.begin(9600);               // Seri Monitör hızı / Serial Monitor speed
7  sim800.begin(9600);               // SIM800L bu hıza kendini ayarlar / SIM800L autobauds to this rate
8  Serial.println(F("AT yaz ve Enter'a bas / Type AT and press Enter"));
9}
10
11void loop() {
12  if (Serial.available()) sim800.write(Serial.read());   // bilgisayar → modül / PC → module
13  if (sim800.available()) Serial.write(sim800.read());   // modül → bilgisayar / module → PC
14}

1#include <SoftwareSerial.h>
2
3SoftwareSerial sim800(2, 3);                // RX = D2 ← SIM TXD, TX = D3 → SIM RXD
4const char PHONE[] = "+905551112233";      // kendi numaran, uluslararası biçimde / your number, international format
5
6// ok gelirse 1, ERROR gelirse -1, süre dolarsa 0 / 1 on ok, -1 on ERROR, 0 on timeout
7int waitReply(const char *ok, unsigned long timeoutMs) {
8  const char *err = "ERROR";
9  byte m1 = 0, m2 = 0;
10  unsigned long start = millis();
11  while (millis() - start < timeoutMs) {
12    if (!sim800.available()) continue;
13    char c = sim800.read();
14    Serial.write(c);                        // modülün cevabını göster / show the module's reply
15    m1 = (c == ok[m1]) ? m1 + 1 : (c == ok[0] ? 1 : 0);
16    if (ok[m1] == '\0') return 1;
17    m2 = (c == err[m2]) ? m2 + 1 : (c == err[0] ? 1 : 0);
18    if (err[m2] == '\0') return -1;
19  }
20  return 0;
21}
22
23// Şebeke kaydını bekle: +CREG: 0,1 (ev ağı) ya da 0,5 (dolaşım) / wait for registration: home or roaming
24bool waitForNetwork(unsigned long timeoutMs) {
25  unsigned long start = millis();
26  while (millis() - start < timeoutMs) {
27    sim800.println("AT+CREG?");
28    String reply = "";
29    unsigned long t = millis();
30    while (millis() - t < 1000) {
31      while (sim800.available()) reply += (char)sim800.read();
32    }
33    Serial.print(reply);
34    if (reply.indexOf("+CREG: 0,1") >= 0 || reply.indexOf("+CREG: 0,5") >= 0) return true;
35    delay(2000);
36  }
37  return false;
38}
39
40bool sendSms(const char *number, const char *text) {
41  sim800.print("AT+CMGS=\"");
42  sim800.print(number);
43  sim800.print("\"\r");
44  if (waitReply(">", 5000) != 1) return false;   // metin istemi gelmedi / no text prompt
45  sim800.print(text);
46  sim800.write(26);                               // Ctrl+Z (0x1A): mesajı gönder / send the message
47  return waitReply("+CMGS:", 60000) == 1;         // ağ onayı 60 sn sürebilir / network ack may take 60 s
48}
49
50void setup() {
51  Serial.begin(9600);
52  sim800.begin(9600);
53  delay(3000);                                    // modül açılsın / let the module boot
54
55  bool alive = false;
56  for (byte i = 0; i < 10 && !alive; i++) {       // otomatik baud için birkaç kez AT / several ATs for autobaud
57    sim800.println("AT");
58    alive = (waitReply("OK", 1000) == 1);
59  }
60  if (!alive) {
61    Serial.println(F("\nModul cevap vermiyor / Module not responding"));
62    return;
63  }
64
65  sim800.println("AT+CMGF=1");                    // SMS metin modu / SMS text mode
66  waitReply("OK", 1000);
67
68  Serial.println(F("\nSebeke bekleniyor / Waiting for network"));
69  if (!waitForNetwork(60000)) {
70    Serial.println(F("Sebekeye kayit olunamadi / Not registered"));
71    return;
72  }
73
74  if (sendSms(PHONE, "BlueGrays: SIM800L calisiyor!")) Serial.println(F("\nSMS gonderildi / SMS sent"));
75  else Serial.println(F("\nSMS gonderilemedi / SMS failed"));
76}
77
78void loop() {
79  if (sim800.available()) Serial.write(sim800.read());   // sonraki mesajları göster / show later messages
80}

1#include <SoftwareSerial.h>
2
3SoftwareSerial sim800(2, 3);                 // RX = D2 ← SIM TXD, TX = D3 → SIM RXD
4const byte RELAY_PIN = 7;                    // röle modülü IN / relay module IN
5const bool RELAY_ON = HIGH;                  // düşük seviyeli modülde LOW yap / set LOW for active-low modules
6const char OWNER[] = "+905551112233";        // komut kabul edilen tek numara / the only accepted number
7
8char line[100];                              // gelen satır tamponu / incoming line buffer
9byte lineLen = 0;
10bool bodyNext = false;                       // sonraki satır SMS metni mi? / is the next line the SMS text?
11bool fromOwner = false;
12bool relayState = false;
13
14int waitReply(const char *ok, unsigned long timeoutMs) {
15  const char *err = "ERROR";
16  byte m1 = 0, m2 = 0;
17  unsigned long start = millis();
18  while (millis() - start < timeoutMs) {
19    if (!sim800.available()) continue;
20    char c = sim800.read();
21    Serial.write(c);
22    m1 = (c == ok[m1]) ? m1 + 1 : (c == ok[0] ? 1 : 0);
23    if (ok[m1] == '\0') return 1;
24    m2 = (c == err[m2]) ? m2 + 1 : (c == err[0] ? 1 : 0);
25    if (err[m2] == '\0') return -1;
26  }
27  return 0;
28}
29
30bool sendSms(const char *number, const char *text) {
31  sim800.print("AT+CMGS=\"");
32  sim800.print(number);
33  sim800.print("\"\r");
34  if (waitReply(">", 5000) != 1) return false;
35  sim800.print(text);
36  sim800.write(26);                          // Ctrl+Z: gönder / send
37  return waitReply("+CMGS:", 60000) == 1;
38}
39
40void setRelay(bool on) {
41  relayState = on;
42  digitalWrite(RELAY_PIN, on ? RELAY_ON : !RELAY_ON);
43}
44
45void handleCommand(char *text) {
46  for (char *p = text; *p; p++) *p = toupper(*p);       // büyük harfe çevir / convert to upper case
47  if (strstr(text, "ROLE AC")) {
48    setRelay(true);
49    sendSms(OWNER, "Role ACILDI / Relay ON");
50  } else if (strstr(text, "ROLE KAPA")) {
51    setRelay(false);
52    sendSms(OWNER, "Role KAPANDI / Relay OFF");
53  } else if (strstr(text, "DURUM")) {
54    sendSms(OWNER, relayState ? "Role ACIK / Relay ON" : "Role KAPALI / Relay OFF");
55  }
56}
57
58void handleLine() {
59  Serial.println(line);
60  if (bodyNext) {                            // +CMT satırından sonraki satır SMS metnidir / the line after +CMT is the SMS text
61    bodyNext = false;
62    if (fromOwner) handleCommand(line);
63  } else if (strncmp(line, "+CMT:", 5) == 0) {
64    fromOwner = (strstr(line, OWNER) != NULL);           // gönderen kontrolü / sender check
65    bodyNext = true;
66  } else if (strncmp(line, "+CLIP:", 6) == 0 && strstr(line, OWNER) != NULL) {
67    sim800.println("ATH");                   // aramayı reddet, ücret yazılmaz / reject the call, nothing is charged
68    setRelay(!relayState);                   // her çağrıda aç-kapa / toggle on every call
69  }
70}
71
72void setup() {
73  pinMode(RELAY_PIN, OUTPUT);
74  setRelay(false);
75  Serial.begin(9600);
76  sim800.begin(9600);
77  delay(3000);
78  for (byte i = 0; i < 10; i++) {            // otomatik baud eşleşmesi / autobaud sync
79    sim800.println("AT");
80    if (waitReply("OK", 1000) == 1) break;
81  }
82  const char *initCmds[] = {"ATE0", "AT+CMGF=1", "AT+CNMI=1,2,0,0,0", "AT+CLIP=1"};
83  for (byte i = 0; i < 4; i++) {
84    sim800.println(initCmds[i]);             // yankı kapalı, metin modu, SMS'i ilet, arayanı göster / echo off, text mode, push SMS, caller ID
85    waitReply("OK", 1000);
86  }
87  Serial.println(F("\nHazir / Ready"));
88}
89
90void loop() {
91  while (sim800.available()) {
92    char c = sim800.read();
93    if (c == '\r') continue;
94    if (c == '\n') {                         // satır tamamlandı / line complete
95      line[lineLen] = '\0';
96      if (lineLen > 0) handleLine();
97      lineLen = 0;
98    } else if (lineLen < sizeof(line) - 1) {
99      line[lineLen++] = c;
100    }
101  }
102}

1#include <SoftwareSerial.h>
2
3SoftwareSerial sim800(2, 3);                 // RX = D2 ← SIM TXD, TX = D3 → SIM RXD
4const byte SENSOR_PIN = 4;                   // PIR çıkışı / PIR output
5const char OWNER[] = "+905551112233";        // aranacak numara / number to call
6const unsigned long RING_MS = 20000;         // en fazla 20 sn çaldır / ring for at most 20 s
7const unsigned long COOLDOWN_MS = 120000;    // iki alarm arası 2 dk; açılışta da 2 dk bekler / 2 min between alarms, also after power-up
8unsigned long lastAlarm = 0;
9
10int waitReply(const char *ok, unsigned long timeoutMs) {
11  const char *err = "ERROR";
12  byte m1 = 0, m2 = 0;
13  unsigned long start = millis();
14  while (millis() - start < timeoutMs) {
15    if (!sim800.available()) continue;
16    char c = sim800.read();
17    Serial.write(c);
18    m1 = (c == ok[m1]) ? m1 + 1 : (c == ok[0] ? 1 : 0);
19    if (ok[m1] == '\0') return 1;
20    m2 = (c == err[m2]) ? m2 + 1 : (c == err[0] ? 1 : 0);
21    if (err[m2] == '\0') return -1;
22  }
23  return 0;
24}
25
26bool sendSms(const char *number, const char *text) {
27  sim800.print("AT+CMGS=\"");
28  sim800.print(number);
29  sim800.print("\"\r");
30  if (waitReply(">", 5000) != 1) return false;
31  sim800.print(text);
32  sim800.write(26);                          // Ctrl+Z: gönder / send
33  return waitReply("+CMGS:", 60000) == 1;
34}
35
36void callOwner() {
37  sim800.print("ATD");
38  sim800.print(OWNER);
39  sim800.println(";");                       // sondaki ; sesli arama demektir / the trailing ; means a voice call
40  waitReply("NO CARRIER", RING_MS);          // açıp kapatırsan erken biter / ends early if you answer and hang up
41  sim800.println("ATH");                     // aramayı sonlandır / hang up
42  waitReply("OK", 2000);
43}
44
45void setup() {
46  pinMode(SENSOR_PIN, INPUT);
47  Serial.begin(9600);
48  sim800.begin(9600);
49  delay(3000);
50  for (byte i = 0; i < 10; i++) {            // otomatik baud eşleşmesi / autobaud sync
51    sim800.println("AT");
52    if (waitReply("OK", 1000) == 1) break;
53  }
54  sim800.println("AT+CMGF=1");               // SMS metin modu / SMS text mode
55  waitReply("OK", 1000);
56}
57
58void loop() {
59  if (digitalRead(SENSOR_PIN) == HIGH && millis() - lastAlarm > COOLDOWN_MS) {
60    lastAlarm = millis();
61    Serial.println(F("Hareket! / Motion!"));
62    sendSms(OWNER, "ALARM: Hareket algilandi / Motion detected");
63    callOwner();
64  }
65  while (sim800.available()) Serial.write(sim800.read());
66}

1#include <Wire.h>
2
3// LilyGO TTGO T-Call SIM800L (IP5306'lı sürüm) pinleri / pins of the IP5306 version
4#define MODEM_PWRKEY     4
5#define MODEM_RST        5
6#define MODEM_POWER_ON  23
7#define MODEM_TX        27      // ESP32 TX → modem RX
8#define MODEM_RX        26      // ESP32 RX ← modem TX
9#define I2C_SDA         21
10#define I2C_SCL         22
11#define IP5306_ADDR   0x75      // güç yönetim yongası / power management chip
12
13HardwareSerial &modem = Serial1;
14const char OWNER[] = "+905551112233";
15
16// Pille çalışırken IP5306 kendini kapatmasın / keep the IP5306 boost on when running from battery
17bool setPowerBoostKeepOn() {
18  Wire.beginTransmission(IP5306_ADDR);
19  Wire.write(0x00);             // SYS_CTL0 yazmacı / SYS_CTL0 register
20  Wire.write(0x37);             // boost keep-on biti açık / boost keep-on bit set
21  return Wire.endTransmission() == 0;
22}
23
24// token gelirse true; ERROR ya da süre dolarsa false / true on token, false on ERROR or timeout
25bool waitFor(const char *token, unsigned long timeoutMs) {
26  String reply = "";
27  unsigned long start = millis();
28  while (millis() - start < timeoutMs) {
29    while (modem.available()) reply += (char)modem.read();
30    if (reply.indexOf(token) >= 0) break;
31    if (reply.indexOf("ERROR") >= 0) break;
32  }
33  Serial.print(reply);
34  return reply.indexOf(token) >= 0;
35}
36
37bool at(const char *cmd) {
38  modem.println(cmd);
39  return waitFor("OK", 2000);
40}
41
42bool registered() {
43  modem.println("AT+CREG?");
44  return waitFor("+CREG: 0,1", 1000);       // ev şebekesine kayıtlı / registered on the home network
45}
46
47bool sendSms(const char *number, const char *text) {
48  modem.printf("AT+CMGS=\"%s\"\r", number);
49  if (!waitFor(">", 5000)) return false;
50  modem.print(text);
51  modem.write(26);                           // Ctrl+Z: gönder / send
52  return waitFor("+CMGS:", 60000);
53}
54
55void setup() {
56  Serial.begin(115200);
57  Wire.begin(I2C_SDA, I2C_SCL);
58  Serial.println(setPowerBoostKeepOn() ? "IP5306 OK" : "IP5306 yok / not found");
59
60  pinMode(MODEM_RST, OUTPUT);
61  pinMode(MODEM_PWRKEY, OUTPUT);
62  pinMode(MODEM_POWER_ON, OUTPUT);
63  digitalWrite(MODEM_RST, HIGH);             // reset bırakılmış / reset released
64  digitalWrite(MODEM_POWER_ON, HIGH);        // modemin beslemesini aç / switch on the modem supply
65  digitalWrite(MODEM_PWRKEY, HIGH);
66  delay(100);
67  digitalWrite(MODEM_PWRKEY, LOW);           // PWRKEY 1 sn düşük: modem açılır / PWRKEY low for 1 s: modem starts
68  delay(1000);
69  digitalWrite(MODEM_PWRKEY, HIGH);
70
71  modem.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
72  delay(3000);
73
74  for (int i = 0; i < 10 && !at("AT"); i++) delay(500);   // otomatik baud / autobaud
75  at("AT+CMGF=1");                           // SMS metin modu / SMS text mode
76  at("AT+CNMI=1,2,0,0,0");                   // gelen SMS'i seri porta ver / push incoming SMS to the UART
77
78  unsigned long start = millis();
79  while (!registered() && millis() - start < 60000) delay(2000);
80
81  if (sendSms(OWNER, "TTGO T-Call hazir / ready")) Serial.println("\nSMS gonderildi / sent");
82}
83
84void loop() {
85  while (modem.available()) Serial.write(modem.read());   // gelen SMS ve aramalar / incoming SMS and calls
86  while (Serial.available()) modem.write(Serial.read());  // Seri Monitör'den AT komutu / AT commands from the monitor
87}

1from machine import UART, Pin
2import time
3
4# GP0 (TX) → SIM RXD (1k + 5,6k bölücü / divider), GP1 (RX) ← SIM TXD
5sim = UART(0, baudrate=9600, tx=Pin(0), rx=Pin(1), timeout=100, timeout_char=50)
6relay = Pin(15, Pin.OUT, value=0)              # röle modülü IN / relay module IN
7OWNER = "+905551112233"                        # yetkili numara / authorised number
8
9def to_text(raw):
10    # yalnız ASCII karakterleri al / keep ASCII characters only
11    return "".join(chr(b) for b in raw if 9 < b < 128)
12
13def wait_for(token, timeout_ms):
14    # token ya da ERROR gelene kadar oku / read until token or ERROR
15    buf = ""
16    t0 = time.ticks_ms()
17    while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
18        if sim.any():
19            buf += to_text(sim.read())
20            if token in buf:
21                return True
22            if "ERROR" in buf:
23                return False
24    return False
25
26def at(cmd, timeout_ms=2000):
27    sim.write(cmd + "\r\n")
28    return wait_for("OK", timeout_ms)
29
30def send_sms(number, msg):
31    sim.write('AT+CMGS="{}"\r'.format(number))
32    if not wait_for(">", 5000):
33        return False
34    sim.write(msg)
35    sim.write(b"\x1a")                         # Ctrl+Z: gönder / send
36    return wait_for("+CMGS:", 60000)
37
38for _ in range(10):                            # otomatik baud eşleşmesi / autobaud sync
39    if at("AT", 1000):
40        break
41at("ATE0")                                     # yankıyı kapat / echo off
42at("AT+CMGF=1")                                # SMS metin modu / SMS text mode
43at("AT+CNMI=1,2,0,0,0")                        # gelen SMS'i UART'a ver / push incoming SMS to the UART
44print("Hazir / Ready")
45
46body_next = False
47from_owner = False
48while True:
49    raw = sim.readline()
50    if not raw:
51        continue
52    line = to_text(raw).strip()
53    if not line:
54        continue
55    print(line)
56    if body_next:                              # +CMT'den sonraki satır SMS metni / line after +CMT is the text
57        body_next = False
58        cmd = line.upper()
59        if not from_owner:
60            continue
61        if "ROLE AC" in cmd:
62            relay.value(1)
63            send_sms(OWNER, "Role ACILDI / Relay ON")
64        elif "ROLE KAPA" in cmd:
65            relay.value(0)
66            send_sms(OWNER, "Role KAPANDI / Relay OFF")
67        elif "DURUM" in cmd:
68            send_sms(OWNER, "Role ACIK / ON" if relay.value() else "Role KAPALI / OFF")
69    elif line.startswith("+CMT:"):             # yeni SMS başlığı / new SMS header
70        from_owner = OWNER in line
71        body_next = True