ESP32-C3-DevKitM-1 and #include<SoftwareSerial.h

may21 · September 9, 2022, 10:06am

Hi everyone.

I want to use ESP-C3-DevkitM-1 with softwareserial.h library
ESP32-C3-DevKitM-1 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation (espressif.com)

#include<SoftwareSerial.h>
SoftwareSerial mySerial(5, 6);//

I already downloaded library of #include<SoftwareSerial.h
I think pin 5 and 6 of ESP32-C3-DevKitM-1 is not work.

Could you recommend me about pin for SoftwareSerial mySerial ?

Hi

Actually, I run this code on Arduino MEGA. It is success.

But I don't know how to run on ESP32

#include<SoftwareSerial.h>
SoftwareSerial mySerial(12, 13);// RX, TX  - 12 yellow  13 white(this is check ok)
//COMMANDS FROM DATASHEETs
byte auto_baud = 0x55;
byte continous_exit = 0x58;
byte rd_status[5] = {0xAA, 0x80, 0x00, 0x00, 0x80}; 
byte rd_hw[5] = {0xAA, 0x80, 0x00, 0x0A, 0x8A};
byte rd_sw[5] = {0xAA, 0x80, 0x00, 0x0C, 0x8C};
byte rd_sn[5] = {0xAA, 0x80, 0x00, 0x0E, 0x8E};
byte rd_vo[5] = {0xAA, 0x80, 0x00, 0x06, 0x86};
byte rd_meas[5] ={0xAA, 0x80, 0x00, 0x22, 0xA2};
byte laser_on[9] = {0xAA, 0x00, 0x01, 0xBE, 0x00, 0x01, 0x00, 0x01, 0xC1};   
byte laser_off[9]  = {0xAA, 0x00, 0x01, 0xBE, 0x00, 0x01, 0x00, 0x00, 0xC0};  
byte one_shot_auto[9]  = {0xAA, 0x00, 0x00, 0x20, 0x00, 0x01, 0x00, 0x00, 0x21};
byte continous_fast[9]  = {0xAA, 0x00, 0x00, 0x20, 0x00, 0x01, 0x00, 0x06, 0x27};
//VARs FOR WORKING WITH DATA
unsigned long  Data = 0;
byte Read[13];
//
void setup() {
  //Serial is comms with computer & mySerial comms with sensor
  Serial.begin(19200);//Baudrate with computer
  pinMode(8, OUTPUT);
  digitalWrite(8, LOW);
  delay(1000);
  Serial.println(" ");
  Serial.println("M88 SERIES LASER SENSOR.......");
  Serial.println("Serial ports OPEN");
  digitalWrite(8, HIGH);
  delay(1000);
  Serial.println("Sensor ON");
  Serial.println("wait..."); 
  mySerial.begin(19200);//Baudrate for comms with sensor
  mySerial.setTimeout(0.001);
  while (mySerial.read()!= 0x00) {}
  Serial.println("ok");
  mySerial.write(0x55);//auto baudrate commas
  delay(100);
  //test ON and OFF pointer
  Serial.println("LASER POINT ON...");
  mySerial.write(laser_on, 9);
  delay(1000);
  Serial.println("LASER POINT OFF...");
  mySerial.write(laser_off, 9);
  delay(200);
}
void loop() {
  Serial.println("read one shot mode: ");
  Data = 0;
  mySerial.write(one_shot_auto, 9); // Send command to sensor
  //
  //Received command in HEX format
  while (mySerial.available()>0){
  mySerial.readBytes(Read,13);
  }
  //
  //Print Data for test
  Serial.println(" ");
  Serial.print("dato trama en HEX:");
  for (int i = 0; i <= 12; i++){
  Serial.print(Read[i],HEX);  
  }
  //Print only measure data
  Serial.println(" ");
  Serial.print("dato medida en HEX:");
  for (int i = 6; i <= 9; i++){
  Serial.print(Read[i], HEX);
  }

b707 · September 9, 2022, 10:11am

esp32 has multiple hardware serials, why do you need a softserial?

And it seems that for ESP32 you should use another library

red_car · September 9, 2022, 10:14am

Not sure they are exposed on that Dev board.

may21 · September 9, 2022, 10:31am

Hi

Actually, I run this code on Arduino MEGA. It is success.

But I don't know how to run on ESP32

#include<SoftwareSerial.h>
SoftwareSerial mySerial(12, 13);// RX, TX  - 12 yellow  13 white(this is check ok)
//COMMANDS FROM DATASHEETs
byte auto_baud = 0x55;
byte continous_exit = 0x58;
byte rd_status[5] = {0xAA, 0x80, 0x00, 0x00, 0x80}; 
byte rd_hw[5] = {0xAA, 0x80, 0x00, 0x0A, 0x8A};
byte rd_sw[5] = {0xAA, 0x80, 0x00, 0x0C, 0x8C};
byte rd_sn[5] = {0xAA, 0x80, 0x00, 0x0E, 0x8E};
byte rd_vo[5] = {0xAA, 0x80, 0x00, 0x06, 0x86};
byte rd_meas[5] ={0xAA, 0x80, 0x00, 0x22, 0xA2};
byte laser_on[9] = {0xAA, 0x00, 0x01, 0xBE, 0x00, 0x01, 0x00, 0x01, 0xC1};   
byte laser_off[9]  = {0xAA, 0x00, 0x01, 0xBE, 0x00, 0x01, 0x00, 0x00, 0xC0};  
byte one_shot_auto[9]  = {0xAA, 0x00, 0x00, 0x20, 0x00, 0x01, 0x00, 0x00, 0x21};
byte continous_fast[9]  = {0xAA, 0x00, 0x00, 0x20, 0x00, 0x01, 0x00, 0x06, 0x27};
//VARs FOR WORKING WITH DATA
unsigned long  Data = 0;
byte Read[13];
//
void setup() {
  //Serial is comms with computer & mySerial comms with sensor
  Serial.begin(115200);//Baudrate with computer
  pinMode(34, OUTPUT);
  digitalWrite(34, LOW);
  delay(1000);
  Serial.println(" ");
  Serial.println("M88 SERIES LASER SENSOR.......");
  Serial.println("Serial ports OPEN");
  digitalWrite(34, HIGH);
  delay(1000);
  Serial.println("Sensor ON");
  Serial.println("wait..."); 
  mySerial.begin(19200);//Baudrate for comms with sensor
  //mySerial.setTimeout(0.001);
  while (mySerial.read()!= 0x00) {}
  Serial.println("ok");
 // mySerial.write(0x55);//auto baudrate commas
  delay(100);
  //test ON and OFF pointer
  Serial.println("LASER POINT ON...");
  mySerial.write(laser_on, 9);
  delay(1000);
  Serial.println("LASER POINT OFF...");
  mySerial.write(laser_off, 9);
  delay(200);
}
void loop() {

  
 
  Serial.println("read one shot mode: ");
  Data = 0;
  mySerial.write(continous_fast, 9); // Send command to sensor
  //
  //Received command in HEX format
  while (mySerial.available()>0){
  mySerial.readBytes(Read,13);
  
  }
  //
  
  
  //Print Data for test
  Serial.println(" ");
  Serial.print("dato trama en HEX:");
  for (int i = 0; i <= 12; i++){
  Serial.print(Read[i],HEX);  
  }
  //Print only measure data
  Serial.println(" ");
  Serial.print("dato medida en HEX:");
  for (int i = 6; i <= 9; i++){
  Serial.print(Read[i], HEX);
  }
  
  // If you want convert to Decimal
 for (int i = 6; i <= 9; i++){
  Data = (Data |= Read[i]) << 8 ;
  }
  Data = Data >> 8;
  //Print in mm
  Serial.println(" ");
  Serial.print("MEDIDA EN mm: "); 
  Serial.println(Data, DEC);
  delay(1000);  
}

ZX80 · September 9, 2022, 10:33am

https://esp32.com/viewtopic.php?f=19&t=22682

may21 · September 9, 2022, 10:36am

I uploaded coding as above.
Actually, I run this code on Arduino MEGA. It is success.

But I don't know how to run on ESP32

red_car · September 9, 2022, 10:39am

The ESP32 is not the problem. The board you are using does not appear to expose the additional serial ports.

Idahowalker · September 9, 2022, 10:55am

use the ESP32's software serial library.

calvf · December 29, 2022, 9:59am

I've tried ESPSoftwareSerial with all the pins on ESP32-C3-12F (from AiThinker), nothing works.

Can init, but no data when communication with another module.
Have tried using USB-TTL (with Teraterm) with the other module, and no issue.

system · June 27, 2023, 9:59am

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