@ajb2k3 said in M5Paper on macos Big Sur:

I found an issue with the driver and had to select the kext file and now the driver works and usb serial is now working again!

Hi @ajb2k3 what do you mean by selecting the ktext file, something like

sudo kextload SiLabsUSBDriver.kext

me it does not change anything, I am on OS Catalina

Select? wow autocorrect!
Nope, It should read delete.
OSX has another driver that is conflicting with the slabs driver.

I found an issue with the driver and had to select the kext file and now the driver works and usb serial is now working again!

Hi @ajb2k3 what do you mean by selecting the ktext file, something like

sudo kextload SiLabsUSBDriver.kext

me it does not change anything, I am on OS Catalina

I'm on 11.14 Big Sur

10.14 would be Mojave released in 2018

@m5stack
At this point I can only assume recent macos is not supported and I'll and get my hands on a windows computer :-(

https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers

Ok, I have found that there is currently an issue in OSX in that the driver is randomly not being loaded for the adapters.

It consistently fails to load, not randomly. At least that's the case for me.
What's your source?

@m5stack Can you confirm is this was tested on Big Sur 11.4 ?
Unless someone can confirm they have has it working on that specific version it's more than likely the driver was not built for this OS.

There are over 550 kernel extensions on my mac and they all work perfectly. It seems the interface Apple exposes for loading extensions works for everyone else.

sudo kextload /Library/Extensions/SiLabsUSBDriver.kext
Password:
Executing: /usr/bin/kmutil load -p /Library/Extensions/SiLabsUSBDriver.kext
Error Domain=KMErrorDomain Code=71 "Unsupported Error: one or more extensions are unsupported to load Kext com.silabs.driver.CP210xVCPDriver v4.10.14 in executable kext bundle com.silabs.driver.CP210xVCPDriver at /Library/StagedExtensions/Library/Extensions/SiLabsUSBDriver.kext" UserInfo={NSLocalizedDescription=Unsupported Error: one or more extensions are unsupported to load Kext com.silabs.driver.CP210xVCPDriver v4.10.14 in executable kext bundle com.silabs.driver.CP210xVCPDriver at /Library/StagedExtensions/Library/Extensions/SiLabsUSBDriver.kext}

Does the driver support Big Sur 11.4

I have followed the instructions. As I can see the driver is installed :
❯ ls -ld /Library/Extensions/Si*
drwxr-xr-x 3 root wheel 96 3 Nov 2016 /Library/Extensions/SiLabsUSBDriver.kext

The application is in the applications folder as well :

Factory test on the device looks good

I have also tried uninstalling the driver. Reinstalling and rebooting.

Any other suggestions ?

make the software install is correct.

USBmodem is the wifiadapter on the Mac

That does not seem to be the case

Before connecting the M5paper
❯ ls -l /dev/tty.*
crw-rw-rw- 1 root wheel 20, 0 23 Sep 20:16 /dev/tty.Bluetooth-Incoming-Port
crw-rw-rw- 1 root wheel 20, 2 23 Sep 20:16 /dev/tty.WI-C200-serialport

After connecting the m5
❯ ls -l /dev/tty.*
crw-rw-rw- 1 root wheel 20, 0 23 Sep 20:16 /dev/tty.Bluetooth-Incoming-Port
crw-rw-rw- 1 root wheel 20, 2 23 Sep 20:16 /dev/tty.WI-C200-serialport
crw-rw-rw- 1 root wheel 20, 4 24 Sep 19:24 /dev/tty.usbmodem52D40004421

When I start m5burner and select the device port "/dev/tty.usbmodem52D40004421" nothing happens. No error message. No options to apply another firmware.

When I try the same device in the desktop IDE, it says failed to connect, check that the device is turned on.
How do I set it to USB mode?

(I will upload some screenshots in a couple of hours)