![]() The MCP2221 also has four GP pins providing miscellaneous functionalities (GPIO. The device reduces external components by integrating the USB termination resistors and the oscillator needed for USB operation. Other features include full ANSI/VT100 terminal emulation, break-sequence support (for Cisco, etc), a line-buffered or immediate send mode, and much more. The MCP2221 is a USB-to-UART/I2C serial converter which enables USB connectivity in applications that have a UART and I2C interfaces. So, if you can't find an OS X driver for yourĪdapter (eg, Belkin), give Serial a try - available from the Mac App Store. ![]() Serial Serial is a great Terminal Emulation Program with built-in driver support for most common USB to serial devices. Or, ctrl-click/right-click on the app and select Open from the pop-up menu so not to permanently lower your security settings. If you have trouble installing any of the following (or any other program) with an unidentified developer error, goto: System Preferences ➤ Secrity & Privacy ➤ General and click on Allow Applications Downloaded from: Anywhere and try again. If you can't find a driver for your adapter (eg, Belkin), try Serial which has built-in support for most (if not all) USB-Serial adapters. If you're looking for a command line app, there's Screen (built-in) or Minicom. The following Mac OS X GUI applications are available: Having installed the right driver for our USB-serial adapter, we also need to install some terminal emulation software before we can connect to anything.
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