Changes between Initial Version and Version 1 of Docs/825gen2/Dev/Devices/USB/Serial

Timestamp:

11/10/23 10:59:16 (2 years ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Devices/USB/Serial

@@ +1 @@
+===== USB Serial Adapters =====
+
+FTDI FT232 supported
+
+[  253.244663] ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
+[  253.244821] usb 1-1.1: Detected FT232RL
+[  253.246307] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
+
+Connect to PC running CommView. The PC serial port should be connected to the USB serial adapter that is connected to the 825 with a crossover cable such as Cardinal 8545-B099-0A.
+
+The default baud rate is likely 9600. Settings can be changed with the stty command such as:
+
+root@imx8mq-var-dart:~# stty -F /dev/ttyUSB0 115200 raw -echo
+
+root@imx8mq-var-dart:~# echo "hello" > /dev/ttyUSB0
+
+CommView will show:
+{{{
+hello[LF]
+}}}
+
+To test receiving data type:
+
+{{{
+cat /dev/ttyUSB0
+}}}
+Type in CommView "1234567890"
+{{{
+1234567890
+}}}
+
+4/5/2023 Found prolific driver was not included. Updated build config to include Prolific. Now supports FTDI and Prolific chip based USB to serial adapters.
+
+
+Device files /dev/ttyUSB* will be created automatically when USB to serial devices are connected, and removed when USB to serial devices are disconnected. 
+
+Test with various USB to serial adapters connected:
+{{{
+root@imx8mq-var-dart:~# ls /dev/ttyUSB*
+/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3  /dev/ttyUSB4  /dev/ttyUSB5  /dev/ttyUSB6  /dev/ttyUSB7
+
+
+root@imx8mq-var-dart:~# lsusb -t
+/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
+    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
+        |__ Port 3: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
+/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
+    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
+        |__ Port 1: Dev 9, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+        |__ Port 4: Dev 4, If 0, Class=Hub, Driver=hub/4p, 480M
+            |__ Port 1: Dev 5, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+            |__ Port 2: Dev 6, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+            |__ Port 3: Dev 7, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+            |__ Port 4: Dev 8, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+        |__ Port 5: Dev 3, If 0, Class=, Driver=, 480M
+/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
+    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
+/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
+    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
+        |__ Port 1: Dev 11, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+        |__ Port 2: Dev 12, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 12M
+        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
+        |__ Port 4: Dev 13, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
+
+
+}}}
+
+
+
+
+