lib-rs485-soft

SoftwareSerial based RS485 tools for sending and receiving data packets, networking and more!

With 3 abstraction layers:

1: Basic TX/RX Layer (RS485Soft.h)

• Sending and receiving packets (half-duplex)
• Data integrity hash check (Pearson Hashing)

2: Network Layer (RSNetDevice.h)

• All the basic features
• Networking features (addresses for sender and receiver) up to 254 devices in a single network
• Callbacks for incoming packets
• Set intervals for periodic actions or packet broadcasting

3: Master-Slave Layer (RSMaster.h & RSSlave.h)

• All the networking and basic features
• Packet topics
• Master and Slave logic roles
• Advanced callbacks for topic data requests and responses handling
• Slave connectivity check functions

What is RS485?

RS485 is a TIA/EIA hardware standard for wired communications over long distances and noisy industrial enviroments

Target boards:

• Arduino: UNO, Pro Mini, Nano
• Espressif: ESP8266 (not tested yet)

Wiring

Is recommended to use PWM digital pins

• RO -> pinRO
• DI -> pinDI
• DE -> pinControl
• RE -> pinControl

Object Declaration and Constructors

// Layer 1 (basic)
RS485Soft rs485(RXpin, TXpin, controlPin);

// Layer 2 (network)
RSNetDevice device(RXpin, TXpin, controlPin);

// Layer 3 (master-slave)
RSMaster master(RXpin, TXpin, controlPin);
RSSlave slave(RXpin, TXpin, controlPin);

RS485 datasheet

For more info about wiring and RS485 module usage, you can read this doc

See the examples folder for a detalied explaination and use cases

Contact and Feedback

Gmail: rdalzotto@itba.edu.ar