PhpSerial won't work on Raspberry Pi4

Asked Nov 30 '19 at 19:18

Active Nov 30 '19 at 19:18

Viewed 26 times

I have a php script using PhpSerial to dial out using a USB modem on a Pi3+ that works fine. That same script, however, will not dial out on a Pi4.

The USB modem appears as /dev/ttyACM0 on both the Pi3 and the Pi4 and the enable_uart=1 is active in both /boot/config.txt files.

The Pi4 is running the latest Buster image and has the most recent update and upgrade.

Is there something uniquely different between the Pi3 and the Pi4 that I am missing?

TIA, Paul

asked Nov 30 '19 at 19:18

user1823955

Have you added www-data to the dialout group? – Dougie Dec 01 '19 at 13:35
Yes, that was one of the first things I did when initially trying to solve the issue. Stll no joy. – user1823955 Dec 01 '19 at 15:25

0 Answers0