Microusb-UART on NRF51822 Custom Boardhttps://devzone.nordicsemi.com/f/nordic-q-a/3253/microusb-uart-on-nrf51822-custom-boardHi All, I am working a custom board for 51822. We have wired the UART RX/TX pins to a microusb connector (No RXD/TXD pins wired). The problem is once we connect it to PC, it doesn&#39;t seem to be recognized as a valid USB device. My guess is i need aen-USTelligent Community 13Wed, 30 Jul 2014 14:46:05 GMTRE: Microusb-UART on NRF51822 Custom Boardhttps://devzone.nordicsemi.com/thread/11909?ContentTypeID=1Wed, 30 Jul 2014 14:46:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b339989e-aa56-414e-891c-2f4f1305d42dcocoa<p>Very interesting link to LemcUSB. Thank you.</p><div style="clear:both;"></div>RE: Microusb-UART on NRF51822 Custom Boardhttps://devzone.nordicsemi.com/thread/11908?ContentTypeID=1Tue, 29 Jul 2014 08:22:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5902d40b-5c89-4cf8-80f4-107966aecc32Knut Eldhuset<p>Hi,</p> <p>Really, you should follow the advice from cocoa. That said, you might be able to get something working with software. The <a href="https://github.com/lemcu/LemcUSB">LemcUSB</a> project provides some USB capabilities on a Cortex M0+ in pure software. It requires a 24MHz clock frequency as provided, but it could be possible to optimize it to run on the nRF51822 at 16MHz. No guarantees, though.</p> <p>BR</p><div style="clear:both;"></div>RE: Microusb-UART on NRF51822 Custom Boardhttps://devzone.nordicsemi.com/thread/11907?ContentTypeID=1Fri, 25 Jul 2014 12:36:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dbd94ec3-ad1e-4f88-abb6-9dd88bd2e68bcocoa<p>Hi, to connect a nRF51 to a pc usb port you need a USB to UART converter (bridge) , like FTDI 232R or silicon labs prolific CP21XX ICs.</p> <p>All these converters have drivers for mac OS X, linux and windows.</p> <p>-c</p><div style="clear:both;"></div>