Serial NodeMCU and Arduino

This page is to Setup and Config Serial NodeMCU and Arduino

Hardware and Software

Hardware

Serial NodeMCU and Arduino

Software

Arduino IDE and ESPLORER

Sanki Notes

Connect :

NodeMCU RX <--> Arduino Pin 11

NodeMCU TX <--> Arduino Pin 10

Both Are 115200

Examples

This example is for Arduino Write a Signal mySerial(10, 11) RX and TX tp NODEMCU

Examples

This example is for NodeMCU (lua) Receive data from Arduino on Serial RX/TX and Send back a DATA

--Others Example for Send data from NodeMCU to Arduino

uart.setup(0, 115200, 8, 0, 1, 0)

--uart.on(1)

--uart.write(0, "page 3")

val = 65

while 1 do

uart.write(0, string.char(val), "\r\n")

val = val + 1

if val > 90 then

val = 65

end

tmr.delay(1000000)

end

- - - - /*
        Software serial multple serial test
        Receives from the hardware serial, sends to software serial.
        Receives from software serial, sends to hardware serial.
        The circuit:
        * RX is digital pin 10 (connect to TX of other device)
        * TX is digital pin 11 (connect to RX of other device)
        Note:
        Not all pins on the Mega and Mega 2560 support change interrupts,
        so only the following can be used for RX:
        10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69
        Not all pins on the Leonardo support change interrupts,
        so only the following can be used for RX:
        8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).
        created back in the mists of time
        modified 25 May 2012
        by Tom Igoe
        based on Mikal Hart's example
        This example code is in the public domain.
        */
        #include <SoftwareSerial.h>
        SoftwareSerial mySerial(10, 11); // RX, TX
        ledOn = 0
        void setup() {
        pin=4
        // Open serial communications and wait for port to open:
        gpio.mode(pin,gpio.OUTPUT)
        Serial.begin(115200);
        --uart.alt(1)
        while (!Serial) {
        uart.on("data", 3,
        ; // wait for serial port to connect. Needed for native USB port only
        function(data)
        }
        print("Received from NodeMCU By SANKI:", data)
        if data=="HI!" then
        if ledOn==0 then
        Serial.println("Goodnight moon!");
        ledOn = 1
        gpio.write(pin,gpio.HIGH)
        // set the data rate for the SoftwareSerial port
        print("LED On SANKI")
        mySerial.begin(115200);
        else
        mySerial.println("HI!");
        ledOn = 0
        }
        gpio.write(pin,gpio.LOW)
        print("LED Off SANKI")
        void loop() { // run over and over
        end
        if (mySerial.available()) {
        else
        Serial.write(mySerial.read());
        print("Input data ")
        }
        print(data)
        if (Serial.available()) {
        end
        mySerial.write(Serial.read());
        end, 0)
        }
        }