Compute Module 4 IO Ramps 1.4 Connection problem
Friends, I was using my Ramps 1.4 card with RPI4 (with Arduino Clone) without any problems. I want to replace Raspberry Pi 4 and use it with the RPI Compute Module 4 IO board, but when I connect with usb, I had breaks with ramps 1.4 and when I reinstall it, it sees it but cannot connect.
Note1: Repertier Server 1.4.1 is installed
Note2: I copied the CM4 IO usb activation code to the bottom of the config.txt file. "dtoverlay=dwc2,dr_mode=host".
screenshot;
https://resimyukle.io/r/JDzqMXYNZR
https://resimyukle.io/r/YyeHNJauw3
screenshot;
https://resimyukle.io/r/JDzqMXYNZR
https://resimyukle.io/r/YyeHNJauw3
Comments
https://resimyukle.io/r/v1pGbwW2cG
it keeps changing continuous this connection problem
You should check /boot/cmdline.txt
by default linux uses first serial for console as well, so they could interfere. We normally remove this in our images, but if you have something like "console=serial0,115200" it is using serial for console as well.
For /boot/config.txt check where you wrote it - there are sections that are only for special pi version. Also see
https://www.raspberrypi.com/documentation/computers/configuration.html
CM1, CM3, CM3+ and CM4
The first generation Compute Module, together with Compute Module 3 and Compute Module 3+ each have two UARTs, while Compute Module 4 has six UARTs as described above.
On all models of Compute Module, the UARTs are disabled by default and can be explicitly enabled using a device tree overlay. You may also specify which GPIO pins to use, for example: