error: port is not open in raspberry pi

Question

I have connected gsm sim900 to raspberry pi and enabled uart serial port as:
in terminal : $ sudo nano /boot/config.txt then i added enable_uart=1 to the config text. as the above changes i see this answer : [error] [serial out : sendSMS] ERROR: port is not open [info] serial port /dev/ttyAMA0 opened at 9600 baud 8N1

the sendSMS is my serial output name that runs first in the beginning. i don't know what's the problem maybe it has delay or something else but i receive no reply for my at commands. please help me

Describe in detail the steps you actually did for your RPi, rather than just provide a link to some article for RPi3. — sawdust, Jun 20 '17 at 23:01

score 0 · Answer 1 · answered Jun 22 '17 at 20:43

0

I found out what was the problem. the error was becouse of connections problem. and as my change said in question is eanagh

answered Jun 22 '17 at 20:43

Rezvan

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3

error: port is not open in raspberry pi

1 Answers1