Multiple serial ports arduino

Check that data is available and read as usual per serial port. Avoid any blocking calls to avoid buffer over-flow.

I had my arduino mega receiving the data from Serial2 and Serial3, by adopting a sketch that was developed by Majenko in answer to the post Processing Serial data. The sketch below outputs data to the serial monitor. The NEW problem I have now is trying to develop a python sketch that would seperate the data from the buffers into two different csv files, with each csv files representing the data from each of the two sensors.

However using serialEvent requires much different approach to your program flow - the loop cannot have any logic which would introduce a delay. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

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Asked 5 years, 11 months ago. Active 5 years, 11 months ago. You need to understand this is a community support forum. Everyone here is a volunteer with no obligation to do anything.

Demanding urgency and keeping secrets is likely to put people off from helping you. But if you approach the forum in the right spirit, the help you will get here will be as good or better than anywhere else, as least for free. Arduino based on samd21 chips can have multiple hardware serial ports, but only 2 out of the box in addition to USB. Any additional serial ports need to be configured. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts.

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I have a requirement to develop an Arduino Uno prototype and used a serial interface to communicate with this two shield. My sketches using SoftwareSerial but it seem not working properly, is there any optimal way to combine these two shield? Given that you're using the shields, you'd have trouble with my favorite trick. I've occasionally used relays, analog multiplexers, or transistors to switch the functionality of pins on-the-fly.

By using one digital pin to select which serial device you want to talk to, you can have both of your communication pipelines taking place on pins 0 and 1. However, that's not an option with off-the-shelf shields. Super Starter kit for Beginners. Digital Oscilloscopes. Variable Supply. Digital Multimeter. Soldering iron kits. PCB small portable drill machines.

I may make a commission if you buy the components through these links. I would appreciate your support in this way! The SoftwareSerial is basically a library that enables the Serial Communication on digital pins other than the Serial Port.