How to stop or disable Getty ttyama0 service?
So, ttyAMA0 is treated like a service. I searched online for solution about this and found a terminal command to stop or disable getty ttyAMA0 service as follow. So, my program could get access to ttyAMA0. These commands did not help or make any changes.
How to make my program get access to ttyama0 on Jessie?
My program complains it can’t connect. How do I make my program get access to ttyAMA0 on Jessie? and in “Advanced” choose “Serial” (Enable/Disable shell and kernel messages on the serial connection) and disable it. Steps 2 and 3 should not be necessary if you do this step first, but in case it didn’t work – check them also.
Where can I find ttyama0 in wheezy?
On Wheezy, I simply commented out a line T0:23: respawn:/sbin/getty -L ttyAMA0 115200 Vt00 in /etc/inittab file. That worked and my program was able to get access to ttyAMA0. However, when I try to do the same on Jessie, I can’t even find the file /etc/inittab. Then, I learned it is completely based on Debian. So, ttyAMA0 is treated like a service.
How to enable UART on Raspberry Pi Stack Exchange?
In order to avoid manual step 5 and some issues that might occur with port ttyAMA0 not being found (/dev/ttyAMA0 being absent) you can set enable_uart=1 in /boot/config.txt, which seems to bring back /dev/ttyAMA0 and ports 15+16 are now in ALT0 state after reboot. Thanks for contributing an answer to Raspberry Pi Stack Exchange!
Why does ttyama0 not work with Raspberry Pi?
So RPI’s serial port is OK. I have turn off serial console via raspi-config due to the serial access conflict, but i can’t send anything. Above code work fine when i use some usb-to-serial device. Example: Why it doesn’t work with ttyAMA0?
Do you need Force Turbo to use ttyama0?
You don’t want anything else to use ttyAMA0 (or ttyS0) so remove all references to console=serial0 and console=serial1 from cmdline.txt (where it belongs) and config.txt (where it doesn’t belong). ttyAMA0 does not change its baudrate with the core clock speed, so you don’t need core_freq=250 or force_turbo=1.