RS-485 – The Details (3/4): Full-Duplex Bus, Interleaving Messages скачать в хорошем качестве

RS-485 – The Details (3/4): Full-Duplex Bus, Interleaving Messages

With demonstrations using Arduinos and TI SN75176B transceivers … ↓↓↓ Complete description, time index and links below ↓↓↓ Last time we’ve failsafe biased our bus to keep it in a defined state, talked about using failsafe receivers as an alternative, and how all that simplifies the protocol (link below). But so far we’ve only used a half-duplex bus. It’s time to go full-duplex. First we look at the full-duplex bus topology and transceivers. We proceed to set up the hardware and write the necessary code. After a demonstration we implement message interleaving to get the most out of our physical full-duplex bandwidth. 00:00 Intro – half-duplex was then, let’s tackle full-duplex now 00:36 Topology – two twisted pairs, one for each direction 04:14 Transceivers – half-duplex vs full-duplex, almost the same 05:27 Hardware – less MCU pins used, added twisted pair 10:02 Protocol – simpler than half-duplex (with failsafe biasing) 11:54 Software I – same as half-duplex with a lot of lines deleted 15:37 Demonstration I – less overhead than half-duplex 18:01 Interleaving – master and slave transmitting simultaneously 19:03 Software II – master with buffer to handle two messages 24:12 Demonstration II – full-duplex speed is achieved 25:54 Wrap-up – nice but costly, next are common protocols, bye Tutorials    • Tutorials   RS-485 – The Basics (1/2): Principles, Topology, Specification, Performance    • RS-485 – The Basics (1/2): Principles...   RS-485 – The Basics (2/2): Simple Master-Slave Half-Duplex Setup    • RS-485 – The Basics (2/2): Simple Mas...   RS-485 – The Details (1/4): Timeouts, Addressing, Multiple Slaves    • RS-485 – The Details (1/4): Timeouts,...   RS-485 – The Details (2/4): Failsafe Biasing, Associated Protocol Simplifications    • RS-485 – The Details (2/4): Failsafe ...   RS-485 – The Details (3/4): Full-Duplex Bus, Interleaving Messages    • RS-485 – The Details (3/4): Full-Dupl...   RS-485 – The Details (4/4): Modbus, PROFIBUS, DMX    • RS-485 – The Details (4/4): Modbus, P...   RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (1/2)    • RS-422 Differential Signaling (Renesa...   RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (2/2)    • RS-422 Differential Signaling (Renesa...   RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (1/2)    • RS-422 Differential Signaling (ISL849...   RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (2/3)    • RS-422 Differential Signaling (ISL849...   RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (3/4)    • RS-422 Differential Signaling (ISL849...   RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (4/4)    • RS-422 Differential Signaling (ISL849...   My Code https://drive.google.com/drive/folder... Texas Instruments, Application Report, RS-422 and RS-485 Standards Overview and System Configurations http://focus.ti.com/lit/an/slla070d/s... #rs485 #arduino #mcu #microcontroller #tutorials #tutorial #how-to #robertssmorgasbord