Arduino 我的ESP8266/NodeMCU如何与GSM模块SIM800L通信?
因此,我想将我的SIM800L GSM模块连接到我的NodeMCU。我买了一个LM2596 DC-DC电压调节器,用于将SIM800L的输出电压转换为~4V。调节器的输入电压为9V/1A 一切都已连接:从GSM接收到D5(GPIO14),从TX接收到D6(GPIO12),从RST接收到D7(GPIO13)。GPIO是特意选择的,因为我在网上读到,NodeMCU上的RX/TX引脚在内部使用。我以前尝试过匹配RX/TX引脚,但结果是一样的(这就是为什么我确定,这一定是我的代码有缺陷)。GSM模块中还插入了SIM卡(带PIN) 我在Arduino IDE上编码,我使用GSMSim和软件串行库连接到GSM模块。我已经尝试了GSMSim的示例草图,以便与GSM模块通信,但在串行监视器上没有得到任何答案 我还尝试手动向GSM模块发送命令Arduino 我的ESP8266/NodeMCU如何与GSM模块SIM800L通信?,arduino,esp8266,nodemcu,software-serial,sim800l,Arduino,Esp8266,Nodemcu,Software Serial,Sim800l,因此,我想将我的SIM800L GSM模块连接到我的NodeMCU。我买了一个LM2596 DC-DC电压调节器,用于将SIM800L的输出电压转换为~4V。调节器的输入电压为9V/1A 一切都已连接:从GSM接收到D5(GPIO14),从TX接收到D6(GPIO12),从RST接收到D7(GPIO13)。GPIO是特意选择的,因为我在网上读到,NodeMCU上的RX/TX引脚在内部使用。我以前尝试过匹配RX/TX引脚,但结果是一样的(这就是为什么我确定,这一定是我的代码有缺陷)。GSM模块中还
#include <GSMSim.h>
#include <SoftwareSerial.h>
// You can use any Serial interface. I recommended HardwareSerial. Please use the library with highiest baudrate.
// In examples, i used HardwareSerial. You can change it anymore.
#define RX 14
#define TX 12
#define RESET 13
SoftwareSerial serial(RX, TX);
GSMSim gsmModule(serial, RESET);
void setup() {
serial.begin(115200); // If you dont change module baudrate, it comes with auto baudrate.
while(!serial) ;
Serial.begin(115200); // Serial for debug...
while(!Serial) ;
Serial.println("");
Serial.println("serial begin");
// Init module...
gsmModule.init(); // use for reseting module. Use it if you dont have any valid reason.
delay(100);
gsmModule.sendATCommand("AT+GMR");
if(serial.available()) Serial.println(serial.readString());
Serial.println("Sent AT");
}
修改后的GSMSim_HTTP草图的另一个示例:
#include <GSMSim.h>
#include <SoftwareSerial.h>
// You can use any Serial interface. I recommended HardwareSerial. Please use the library with highiest baudrate.
// In examples, i used HardwareSerial. You can change it anymore.
#define RX 14
#define TX 12
#define RESET 13
SoftwareSerial serial(RX, TX);
GSMSim http(serial, RESET);
static volatile int num = 0;
void setup() {
serial.begin(115200); // If you dont change module baudrate, it comes with auto baudrate.
while(!serial) {
; // wait for module for connect.
}
Serial.begin(115200); // Serial for debug...
// Init module...
http.init(); // use for init module. Use it if you dont have any valid reason.
Serial.print("Set Phone Function... ");
Serial.println(http.setPhoneFunc(1));
//delay(1000);
Serial.print("is Module Registered to Network?... ");
Serial.println(http.isRegistered());
//delay(1000);
Serial.print("Signal Quality... ");
Serial.println(http.signalQuality());
//delay(1000);
Serial.print("Operator Name... ");
Serial.println(http.operatorNameFromSim());
//delay(1000);
//Serial.print("GPRS Init... ");
//Serial.println(http.gprsInit("internet")); // Its optional. You can set apn, user and password with this method. Default APN: "internet" Default USER: "" Default PWD: ""
//delay(1000);
Serial.print("Connect GPRS... ");
Serial.println(http.connect());
//delay(1000);
Serial.print("Get IP Address... ");
Serial.println(http.getIP());
delay(1000);
Serial.print("Get... ");
Serial.println(http.get("sera.erdemarslan.com/test.php"));
delay(1000);
Serial.print("Get with SSL and read returned data... ");
Serial.println(http.getWithSSL("erdemarslan.com/test.php", true));
delay(1000);
Serial.print("Post... ");
Serial.println(http.post("sera.erdemarslan.com/test.php", "name=Erdem&surname=Arslan", "application/x-www-form-urlencoded"));
delay(1000);
Serial.print("Post with SSL and read returned data... ");
Serial.println(http.post("erdemarslan.com/test.php", "name=Erdem&surname=Arslan", "application/x-www-form-urlencoded", true));
delay(1000);
Serial.print("Close GPRS... ");
Serial.println(http.closeConn());
//delay(1000);
// For other methods please look at readme.txt file.
}
void loop() {
// Use your Serial interface...
if(serial.available()) {
String buffer = "";
buffer = Serial1.readString();
num = num + 1;
Serial.print(num);
Serial.print(". ");
Serial.println(buffer);
}
// put your main code here, to run repeatedly:
}
我希望这是显而易见的,因为我根本不熟悉任何命令
谢谢 ESP8266的GSM发送至接收引脚(引脚14),GSM接收至发送引脚(引脚15)。
#include <GSMSim.h>
#include <SoftwareSerial.h>
// You can use any Serial interface. I recommended HardwareSerial. Please use the library with highiest baudrate.
// In examples, i used HardwareSerial. You can change it anymore.
#define RX 14
#define TX 12
#define RESET 13
SoftwareSerial serial(RX, TX);
GSMSim http(serial, RESET);
static volatile int num = 0;
void setup() {
serial.begin(115200); // If you dont change module baudrate, it comes with auto baudrate.
while(!serial) {
; // wait for module for connect.
}
Serial.begin(115200); // Serial for debug...
// Init module...
http.init(); // use for init module. Use it if you dont have any valid reason.
Serial.print("Set Phone Function... ");
Serial.println(http.setPhoneFunc(1));
//delay(1000);
Serial.print("is Module Registered to Network?... ");
Serial.println(http.isRegistered());
//delay(1000);
Serial.print("Signal Quality... ");
Serial.println(http.signalQuality());
//delay(1000);
Serial.print("Operator Name... ");
Serial.println(http.operatorNameFromSim());
//delay(1000);
//Serial.print("GPRS Init... ");
//Serial.println(http.gprsInit("internet")); // Its optional. You can set apn, user and password with this method. Default APN: "internet" Default USER: "" Default PWD: ""
//delay(1000);
Serial.print("Connect GPRS... ");
Serial.println(http.connect());
//delay(1000);
Serial.print("Get IP Address... ");
Serial.println(http.getIP());
delay(1000);
Serial.print("Get... ");
Serial.println(http.get("sera.erdemarslan.com/test.php"));
delay(1000);
Serial.print("Get with SSL and read returned data... ");
Serial.println(http.getWithSSL("erdemarslan.com/test.php", true));
delay(1000);
Serial.print("Post... ");
Serial.println(http.post("sera.erdemarslan.com/test.php", "name=Erdem&surname=Arslan", "application/x-www-form-urlencoded"));
delay(1000);
Serial.print("Post with SSL and read returned data... ");
Serial.println(http.post("erdemarslan.com/test.php", "name=Erdem&surname=Arslan", "application/x-www-form-urlencoded", true));
delay(1000);
Serial.print("Close GPRS... ");
Serial.println(http.closeConn());
//delay(1000);
// For other methods please look at readme.txt file.
}
void loop() {
// Use your Serial interface...
if(serial.available()) {
String buffer = "";
buffer = Serial1.readString();
num = num + 1;
Serial.print(num);
Serial.print(". ");
Serial.println(buffer);
}
// put your main code here, to run repeatedly:
}
serial.begin
Set Phone Function... 0
is Module Registered to Network?... 0
Signal Quality... 99
Operator Name... NOT CONNECTED
Connect GPRS... 0
Get IP Address...
Get module date time... ERROR:NOT_GET_DATETIME
Set timezone and time server... 0
Sync date time from server... AT_COMMAND_ERROR
Get module date time after sycn... ERROR:NOT_GET_DATETIME
Close GPRS... 0