epsolar-tracer
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kasbert
Driver for the XR21B1411
I am running Raspberry Pi with Kernel 4.14.29-v7+ and I was able to get the 1b version of this driver from the Exar website since I am running a newer version of the kernel than the 1a version is for.
I am able to compile and install the driver and even able to load it for the device, having it create the /dev/ttyXRUSB0 device. But when I run the test programs, I get the following in dmesg - any advice?
[165443.591667] tty ttyXRUSB0: xr_usb_serial_tty_install [165443.591733] tty ttyXRUSB0: xr_usb_serial_tty_open [165443.591746] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_port_activate [165443.592008] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_ctrl_msg - rq 0x22, val 0x3, len 0x0, result -32 [165443.592028] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_ctrl_irq - urb shutting down with status: -2 [165443.592589] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.592822] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.592945] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.593069] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.593194] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.593320] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165443.593445] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_set_reg Error:-32 [165449.607737] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_tty_close [165449.607770] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_port_shutdown [165449.608029] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_ctrl_msg - rq 0x22, val 0x0, len 0x0, result -32 [165449.608151] cdc_xr_usb_serial 1-1.4:1.0: xr_usb_serial_tty_cleanup
Here is what I did. I bought a new RS485 USB interface from Amazon that uses the FTDI serial hardware and it works perfectly. http://a.co/9mGUuzH
I've recently developed a similar problem. A physical USB port stopped working. I moved the cable and that worked. Problem was I had to keep moving the cable. Added a thumb drive and no longer had to move the cable. Today, nothing works with the Exar driver.
A workaround is nice, but I'd like to know what's going on.
I read there are polyfuses that trip and take a day or two to reset. That matches my situation. Could the Epever Tracer be increasing the current due to a leaky component? I'll leave my unit disonnected from the RPi for a few days and see if my USB ports are functional for the Tracer again.
If so, I'm going to contact Epever and ask for a schematic or a maybe a replacement. If the current draw is increasing gradually, the new cable suggested may be a temporary fix.
Here is what I did. I bought a new RS485 USB interface from Amazon that uses the FTDI serial hardware and it works perfectly. http://a.co/9mGUuzH
Just wired ground, data+, data- and plug it in? FTDI is usually well supported. I'm having a hard time getting the xr_usb_serial drive to build and load. PITA. If the FTDI adapter works, then I'm all about it!
Sometimes connecting the ground in addition to D+ and D- makes the connection more reliables.
Closing as stale.
