diff options
| -rw-r--r-- | config/example-multi-mcu.cfg | 6 | ||||
| -rw-r--r-- | docs/FAQ.md | 10 |
2 files changed, 10 insertions, 6 deletions
diff --git a/config/example-multi-mcu.cfg b/config/example-multi-mcu.cfg index 144651c3..e2f2a0b3 100644 --- a/config/example-multi-mcu.cfg +++ b/config/example-multi-mcu.cfg @@ -9,17 +9,17 @@ # micro-controllers on the printer. Typically, both the X and Y axes # are connected to the main micro-controller. [mcu] -serial: /dev/ttyACM0 +serial: /dev/serial/by-path/platform-3f980000.usb-usb-0:1.2:1.0-port0 pin_map: arduino # The "zboard" micro-controller will be used to control the Z axis. [mcu zboard] -serial: /dev/ttyACM1 +serial: /dev/serial/by-path/platform-3f980000.usb-usb-0:1.3:1.0-port0 pin_map: arduino # The "auxboard" micro-controller will be used to control the heaters. [mcu auxboard] -serial: /dev/ttyACM2 +serial: /dev/serial/by-path/platform-3f980000.usb-usb-0:1.4:1.0-port0 pin_map: arduino [stepper_x] diff --git a/docs/FAQ.md b/docs/FAQ.md index 351701cb..d2fc3ccd 100644 --- a/docs/FAQ.md +++ b/docs/FAQ.md @@ -38,7 +38,7 @@ The general way to find a USB serial port is to run `ls -l /dev/serial/by-id/` from an ssh terminal on the host machine. It will likely produce output similar to the following: ``` -lrwxrwxrwx 1 root root 13 Jan 3 22:15 usb-UltiMachine__ultimachine.com__RAMBo_12345678912345678912-if00 -> ../../ttyACM0 +lrwxrwxrwx 1 root root 13 Jun 1 21:12 usb-1a86_USB2.0-Serial-if00-port0 -> ../../ttyUSB0 ``` The name found in the above command is stable and it is possible to @@ -46,18 +46,22 @@ use it in the config file and while flashing the micro-controller code. For example, a flash command might look similar to: ``` sudo service klipper stop -make flash FLASH_DEVICE=/dev/serial/by-id/usb-UltiMachine__ultimachine.com__RAMBo_12345678912345678912-if00 +make flash FLASH_DEVICE=/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0 sudo service klipper start ``` and the updated config might look like: ``` [mcu] -serial: /dev/serial/by-id/usb-UltiMachine__ultimachine.com__RAMBo_12345678912345678912-if00 +serial: /dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0 ``` Be sure to copy-and-paste the name from the "ls" command that you ran above as the name will be different for each printer. +If you are using multiple micro-controllers and they do not have +unique ids (common on boards with a CH340 USB chip) then follow the +directions above using the directory `/dev/serial/by-path/` instead. + ### When the micro-controller restarts the device changes to /dev/ttyUSB1 Follow the directions in the |