GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)

Question

smstools3's /var/log/smsd.log keeps giving:

GSM1: Checking if modem is ready
GSM1: -> AT
GSM1: Command is sent, waiting for the answer. (5)
GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4), timeout occurred. 1.

My /etc/smsd.conf:

# Example smsd.conf. Read the manual for a description
devices = GSM1
logfile = /var/log/smsd.log
loglevel = 7
[GSM1]
device = /dev/ttyAMA0
incoming = no
#pin = 1111

My /boot/config.txt contains:

[GSM modem on GPIO 14/15]
enable_uart=1
dtoverlay=miniuart-bt

What is causing this? I've tried a few different wiring configurations, and I still get the same error:

and the simpler

(mutatis muntandis)

This question is lacking detail and any diagnostics. If it really is RS232 connecting to a Pi serial port won't work. Why would you nobble the Pi Bluetooth - this just an unnecessary complication and the default would be orders of magnitude faster than GSM. — Milliways, Jan 05 '24 at 02:29
@Milliways "lacking detail and any diagnostics" What detail would help the post? "If it really is RS232 connecting to a Pi serial port won't work." What do I connect it to, then? "Why would you nobble the Pi Bluetooth" I saw somewhere in the documentation that is necessary, because Bluetooth uses the those same pins. — Geremia, Jan 05 '24 at 02:56
@Milliways "the default would be orders of magnitude faster than GSM." What's the default? Aren't I supposed to be using GSM with a GSM modem? — Geremia, Jan 05 '24 at 03:08
Why would you believe what you "saw somewhere" rather than the official documentation https://www.raspberrypi.com/documentation/computers/configuration.html#configuring-uarts or the numerous posts on this site. — Milliways, Jan 05 '24 at 03:09
@Milliways I saw it on some RaspberryPi.com documentation page. — Geremia, Jan 05 '24 at 03:17
@Milliways Should my device be /dev/ttyAMA0 or /dev/ttyS0? — Geremia, Jan 05 '24 at 03:18
Neither. See How do I make serial work on the Raspberry Pi3 or later Bluetooth definitely DOESN'T "uses the those same pins" — Milliways, Jan 05 '24 at 03:39

GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)

0 Answers0