how to use serial port in raspberry pi 3

Question

i had try so many code and thing but i dont get the correct answer for how to transmitter or receive the data through GPIO pin of serial port

clem57 · Answer

rew is correct, but for a good picture check out https://www.abelectronics.co.uk/kb/article/1035/raspberry-pi-3-serial-port-usage .

The reason for the changes are related to bluetooth as described at pi 3 - How do I make serial work on the Raspberry Pi3 - Raspberry Pi Stack Exchange . To use the serial port, programming is not needed. Just install minicom talked about here. In just under 20 minutes you can be using the GPIO pins, save for reading and stuff.

Clem

shabaz · Answer

What a mess the whole serial port thing has become.. : (

oksbwn · Answer

gotto terminal ->type $sudo raspi-config goto advanced options->find serial Now over their make default login console through serial Disable Now your application can access the serial port. It works 100%.

shabaz · Answer

Hi Clem,

Most of the 'net appears to have only part of the picture, we tried to summarize all the findings here (and really it should be in a blog

rather than buried in a discussion but I'm still not convinced I have all detail, but this is a start) where different options are presented:

https://www.element14.com/community/message/195438/l/re-raspberry-pi-3-und-enocean-pi-kompatibilit%C3%A4tsproblem#195438

Long story short, an option has to be picked and used in order to make sensible use of the serial port. I pick Option 1 from the list generally

during software development for the pi, but option 1 won't suit everyone.

rew · Answer

I found out last Friday that the mini-uart doesn't support parity. If you enable parity it is silently ignored. This resulted in a bunch of wasted hours figuring that out....

shabaz · Answer

Hi Roger, I see.. interesting discovery. That's very useful to know. I'll add this to the discussion thread mentioned above too, so that we know this when deciding which option to take.