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Well, in previous times I deeply read your comments on DE facility shiped with teensy, wich has been very usefull for a slave libray i used before (see here). But the library I use now (ModbusMaster Written by Doc Walker) does not seem to use this functionality, so I added a few lines to...

Hi Paul thanks to come back in this discussion. I'm not involved with SPI sharing problem, as I plan to only use a single W5100 with my teensy31, and nothing else. but I pomise that as soon as I come back home, I will try to make a w5100 work with my teensy (actualy one of the half dozen teensy...

Hi, Despite this discussion is rather old, this is one of the rare source of information concerning the use of w5100 chip with teensy3.1. I will try theses hacks to make them run together. Just to add some information, i just mentionned another post from Paul Stoffregen concerning this subject...

Hi ! I'm using Modbus for years in my home automation system and decided to switch from Arduino to Teensy recently. As I was using excellent ModbusSlave library from jpmzometa (http://sites.google.com/site/jpmzometa/) I had to change a few lines in the code to use Serial1 in stead of USB Serial...

Thanks for your answer Paul. have a good day

Hello, Does the SerialX ports on Teensy3.1 (0,1,7,8,9,10) are also 5V tolerant, as they use pins usualy dedicated to "digital use" ?

Hello, I've seen in another post (here) that it's possible to port a modbus lib to teensy by changing "Serial" to "Serial1", because Serial is used for the USB serial port. I'm using another lib of modbus (Written by Jason Vreeland) wich is more adapted to my needs (don't use a DE pin, and most...