I’m just lately making an attempt to program STM32 microcontrollers underneath macOS, and I used my CMSIS-DAP appropriate interface to flash the microcontroller.
Usually an CMSIS-DAP interface would seem as a USB composite machine: it incorporates an HID machine which is used to entry the debug port on STM32, and one other one as USB CDC ACM serial port (from which you’ll entry a bodily serial port on the interface).
Underneath macOS, CDC serial ports are purported to be acknowledged as /dev/tty.usbmodemXXX, but it surely would not seem on my Mac in any respect. Later I might discover out it was really acknowledged as a dial up modem (in Community tab of system preferences):
After all I did not like what macOS did so I attempted deleting the machine from Community tab and selected "No" when it asks me whether or not I need it to reappear subsequent time I plug it in, hoping it might let me entry the uncooked serial port machine when community providers isn’t making an attempt to occupy it, and it didn’t. Serial port gadgets nonetheless does not present up. Later it seems Apple left no technique to undo that so I can not restore my laptop to the way it behaved to start with.
From the ioreg output (after I deleted it from Community and did a bit extra analysis on tips on how to present macOS machine hierachy) I can see CDC ACM driver is selecting up the CDC serial port a part of the composite machine however apparently IOSerialBSDClient isn’t current, which means serial port is in fact not accessible.
| | | | | +-o USB2.1 Hub@00100000 <class IOUSBHostDevice, id 0x100000755, registered, matched, energetic, busy 0 (243 ms), retain 39>
| | | | | +-o AppleUSB20Hub@00100000 <class AppleUSB20Hub, id 0x100000810, registered, matched, energetic, busy 0 (236 ms), retain 23>
| | | | | | +-o AppleUSB20HubPort@00110000 <class AppleUSB20HubPort, id 0x10000081d, registered, matched, energetic, busy 0 (0 ms), retain 12>
| | | | | | +-o AppleUSB20HubPort@00120000 <class AppleUSB20HubPort, id 0x10000081f, registered, matched, energetic, busy 0 (236 ms), retain 16>
| | | | | | | +-o CMSIS-DAP@00120000 <class IOUSBHostDevice, id 0x100000b2d, registered, matched, energetic, busy 0 (234 ms), retain 46>
| | | | | | | +-o AppleUSBCDCCompositeDevice <class AppleUSBCDCCompositeDevice, id 0x100000b34, !registered, !matched, energetic, busy 0, retain 4>
| | | | | | | +-o IOUSBHostInterface@0 <class IOUSBHostInterface, id 0x100000b36, registered, matched, energetic, busy 0 (21 ms), retain 12>
| | | | | | | | +-o AppleUserUSBHostHIDDevice <class AppleUserHIDDevice, id 0x100000b41, registered, matched, energetic, busy 0 (1 ms), retain 20>
| | | | | | | | +-o IOHIDInterface <class IOHIDInterface, id 0x100000b4a, registered, matched, energetic, busy 0 (1 ms), retain 6>
| | | | | | | +-o IOUSBHostInterface@1 <class IOUSBHostInterface, id 0x100000b37, registered, matched, energetic, busy 0 (8 ms), retain 9>
| | | | | | | | +-o AppleUSBACMControl <class AppleUSBACMControl, id 0x100000b40, registered, matched, energetic, busy 0 (0 ms), retain 6>
| | | | | | | +-o IOUSBHostInterface@2 <class IOUSBHostInterface, id 0x100000b38, registered, matched, energetic, busy 0 (220 ms), retain 5>
| | | | | | | +-o Android File Tra <class AppleUSBHostDeviceUserClient, id 0x100000b3a, !registered, !matched, energetic, busy 0, retain 6>
| | | | | | | +-o Android File Tra <class AppleUSBHostDeviceUserClient, id 0x100000b4e, !registered, !matched, energetic, busy 0, retain 6>
The issue right here is:
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Will I be capable to make macOS cease utilizing a dialup modem driver in my system, and simply let CDC ACM serial ports be TTY serial ports? Or power it use serial port driver for this machine?
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How do I let the modem driver decide it up once more (i.e. simply undo the delete)? I already tried the whole lot in an earlier put up and it might not work.
(The CMSIS-DAP interface’s flashing means is completely superb. Simply lacking the digital serial port machine from macOS. It will work underneath my Home windows laptop and even in Asahi Linux)
