SoftwareSerial Not work?

#1

Hi people!

I have a question…

I´m trying to use SerialSoftware library o use ESP to comunicate with other device but after compiling I receive the message " SerialSoftware.h No Such file or diretory".

Is not possible to use this library with ESP32 Lora?

I need this because all ports is in use and I need more then two Serial comunication…

Thank you for the help.!

#2

Currently this SerialSoftware library only supports cubecell series.
Because ESP32 already has three uarts, there is no SerialSoftware library added.
Have you taken all three serial ports?

#3

Hi Quency,

Thank you for your replay!

Actually I understand the U0 is the same of USB and I´m using to debug software U2 RX is the same PIN of OLED_RST and I don´t know another serial port…

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image.jpg1559×734 307 KB

I tried to not use the pin with red arrow and I´m using 3 ADC ports too for an Accelerometer…

I´m new with Arduino and I try to find a way resolve this problem…

If you have any other comment to help me to find a solution…

Thank you in advance!

Flavio

#4

ESP32 can use the pin mapping function to map uart to any pin. You can use this function to complete the mapping function Serial2.begin (115200, SERIAL_8N1, 33, 32) ;.
/*

  • Heltec Automation ESP32 Serial 2 example.
  • work with ESP32’s IO MUX
    */

//HardwareSerial Serial2(2);

void setup() {

Serial.begin(115200);

// Serial2.begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert)
// The txPin & rxPin can set to any output pin
Serial2.begin(115200, SERIAL_8N1, 33, 32);
}

void loop() {

if(Serial.available()) {
int ch = Serial.read();
Serial2.write(ch);
}

if(Serial2.available()) {
int ch = Serial2.read();
Serial.write(ch);
}
}

2 Likes
#5

Hi Quency!

Many thanks for your example and explanation!

I see it yesterday night and I did the same thing your example and work fine!

Thanks again!

Flavio

#6

this method works on esp32 lora V3 too?