v1.0.6

* Added support for both hardware and software serial ports.
* Updated examples.

Author: vishnumaiea

.vscode/arduino.json

@@ -0,0 +1,6 @@
+{
+    "board": "esp32:esp32:esp32doit-devkit-v1",
+    "sketch": "examples\\RS485Passthrough\\RS485Passthrough.ino",
+    "configuration": "FlashFreq=80,UploadSpeed=921600,DebugLevel=none,EraseFlash=none",
+    "port": "COM24"
+}

.vscode/c_cpp_properties.json

@@ -1,15 +1,20 @@
-:repository-owner: arduino-libraries
-:repository-name: ArduinoRS485
+:repository-owner: CIRCUITSTATE
+:repository-name: CSE_ArduinoRS485
 
 = {repository-name} Library for Arduino =
 
-image:https://github.com/{repository-owner}/{repository-name}/actions/workflows/check-arduino.yml/badge.svg["Check Arduino status", link="https://github.com/{repository-owner}/{repository-name}/actions/workflows/check-arduino.yml"]
-image:https://github.com/{repository-owner}/{repository-name}/actions/workflows/compile-examples.yml/badge.svg["Compile Examples status", link="https://github.com/{repository-owner}/{repository-name}/actions/workflows/compile-examples.yml"]
-image:https://github.com/{repository-owner}/{repository-name}/actions/workflows/spell-check.yml/badge.svg["Spell Check status", link="https://github.com/{repository-owner}/{repository-name}/actions/workflows/spell-check.yml"]
+This Arduino library allows you to send and receive data using the **RS-485** interface standard. Supported by all Arduino-compatible boards such as ESP32, STM32, RP2040, AVR, SAMD, ESP8266, etc. You can use both hardware and software serial ports. This library supports the Maxim Integrated MAX485 and equivalent chipsets.
 
-Enables sending and receiving data using the RS-485 standard with RS-485 shields, like the MKR 485 Shield.
+Three examples are included with this library:
 
-This library supports the Maxim Integrated MAX3157 and equivalent chipsets.
+  * **RS485_Sender** - Sends data to a receiver.
+  * **RS485_Receiver** - Receives data from a sender.
+  * **RS485_Passthrough** - Sends and receives data between the RS-485 port and the default serial port.
+
+This library is a fork of the ArduinoRS485 library by Arduino, and is maintained by **CIRCUITSTATE**.
+
+* https://github.com/arduino-libraries/ArduinoRS485[ArduinoRS485 Library by Arduino]
+* https://www.arduino.cc/reference/en/libraries/arduinors485/[ArduinoRS485 documentation by Arduino]
+* https://www.circuitstate.com/tutorials/what-is-rs-485-how-to-use-max485-with-arduino-for-reliable-long-distance-serial-communication/[RS-485 tutorial by CIRCUITSTATE]
+* https://www.circuitstate.com/pinouts/max485-cd4069-rs-485-module-with-auto-data-direction-control-pinout-diagram-and-pin-reference/[MAX485+CD4069 Module Pinout by CIRCUITSTATE]
 
-For more information about this library please visit us at
-http://www.arduino.cc/en/Reference/{repository-name}

README.adoc

@@ -0,0 +1,43 @@
+/*
+  RS-485 Passthrough.
+
+  This sketch relays data sent and received between the Serial port and the RS-485 interface.
+
+  Originally created by Sandeep Mistry, on 4 July 2018.
+  Modified by @vishnumaiea for CIRCUITSTATE Electronics (@circuitstate).
+
+  Source: https://github.com/CIRCUITSTATE/CSE_ArduinoRS485
+*/
+
+#include <CSE_ArduinoRS485.h>
+
+// Declare the RS485 interface here with a hardware serial port.
+RS485Class RS485 (Serial1, 2, 3, 4); // DE, RE, TX
+
+/* // If you want to use a software serial port, declare it here,
+// comment out the previous declaration, and uncomment this section.
+#include <SoftwareSerial.h>
+
+SoftwareSerial mySerial (10, 11); // RX, TX
+RS485Class RS485 (mySerial, 2, 3, 4); // DE, RE, TX */
+
+void setup() {
+  Serial.begin (9600);
+  RS485.begin (9600);
+
+  // Enable transmission. Can be disabled with: RS485.endTransmission();
+  RS485.beginTransmission();
+
+  // Enable reception. Can be disabled with: RS485.noReceive();
+  RS485.receive();
+}
+
+void loop() {
+  if (Serial.available()) {
+    RS485.write (Serial.read());
+  }
+
+  if (RS485.available()) {
+    Serial.write (RS485.read());
+  }
+}

examples/RS485P_Passthrough/RS485_Passthrough.ino

@@ -0,0 +1,39 @@
+/*
+  RS-485 Receiver.
+
+  This sketch prints any data received from the RS-485 interface to the Serial port.
+
+  Originally created by Sandeep Mistry, on 4 July 2018.
+  Modified by @vishnumaiea for CIRCUITSTATE Electronics (@circuitstate).
+
+  Source: https://github.com/CIRCUITSTATE/CSE_ArduinoRS485
+*/
+
+#include <CSE_ArduinoRS485.h>
+
+// Declare the RS485 interface here with a hardware serial port.
+RS485Class RS485 (Serial1, 2, 3, 4); // DE, RE, TX
+
+/* // If you want to use a software serial port, declare it here,
+// comment out the previous declaration, and uncomment this section.
+#include <SoftwareSerial.h>
+
+SoftwareSerial mySerial (10, 11); // RX, TX
+RS485Class RS485 (mySerial, 2, 3, 4); // DE, RE, TX */
+
+void setup() {
+  Serial.begin (9600);
+  while (!Serial);
+
+  RS485.begin (9600);
+
+  // Enable reception. Can be disabled with: RS485.noReceive();
+  RS485.receive();
+}
+
+void loop() {
+  if (RS485.available()) {
+    Serial.write (RS485.read());
+  }
+}
+

examples/RS485Passthrough/RS485Passthrough.ino

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+/*
+  RS-485 Sender
+
+  This sketch periodically sends a string over the RS-485 interface
+
+  Originally created by Sandeep Mistry, on 4 July 2018.
+  Modified by @vishnumaiea for CIRCUITSTATE Electronics (@circuitstate).
+
+  Source: https://github.com/CIRCUITSTATE/CSE_ArduinoRS485
+*/
+
+#include <CSE_ArduinoRS485.h>
+
+int counter = 0;
+
+// Declare the RS485 interface here with a hardware serial port.
+RS485Class RS485 (Serial1, 2, 3, 4); // DE, RE, TX
+
+/* // If you want to use a software serial port, declare it here,
+// comment out the previous declaration, and uncomment this section.
+#include <SoftwareSerial.h>
+
+SoftwareSerial mySerial (10, 11); // RX, TX
+RS485Class RS485 (mySerial, 2, 3, 4); // DE, RE, TX */
+
+void setup() {
+  // Initialize the RS485 interface
+  RS485.begin (9600);
+}
+
+void loop() {
+  RS485.beginTransmission();
+  RS485.print ("Hello ");
+  RS485.println (counter);
+  RS485.endTransmission();
+
+  counter++;
+
+  delay (1000);
+}

examples/RS485Receiver/RS485Receiver.ino

@@ -1,32 +1,31 @@
 #######################################
-# Syntax Coloring Map For ArduinoRS485
+# Syntax Coloring Map For CSE_ArduinoRS485
 #######################################
 
 #######################################
 # Datatypes (KEYWORD1)
 #######################################
 
-ArduinoRS485	KEYWORD1
-RS485	KEYWORD1
+RS485Class  KEYWORD1
 
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
 
-begin	KEYWORD2
-end	KEYWORD2
-peek	KEYWORD2
-read	KEYWORD2
-flush	KEYWORD2
-write	KEYWORD2
+begin KEYWORD2
+end KEYWORD2
+peek  KEYWORD2
+read  KEYWORD2
+flush KEYWORD2
+write KEYWORD2
 
-beginTransmission	KEYWORD2
-endTransmission	KEYWORD2
-receive	KEYWORD2
-noReceive	KEYWORD2
-sendBreak	KEYWORD2
-sendBreakMicroseconds	KEYWORD2
-setPins	KEYWORD2
+beginTransmission KEYWORD2
+endTransmission KEYWORD2
+receive KEYWORD2
+noReceive KEYWORD2
+sendBreak KEYWORD2
+sendBreakMicroseconds KEYWORD2
+setPins KEYWORD2
 
 #######################################
 # Constants (LITERAL1)