I believe the cross-platform abstraction provided by ZephyrRTOS is a very important feature. Of course, the abstraction itself also brings a more complex software architecture and a steeper learning curve. Recently, I tried to use the nRF52840 to create a low-power Bluetooth + LTE + GNSS board. Initially, the distributor lent me an nRF52840 DK, … Read more
If you don’t want to miss my updates, remember to check the public account in the upper right corner and set it as a star, and take down a star for me. This analysis question still comes from Huawei’s hardware position written test questions. This time we analyze three multiple-choice questions, involving knowledge points: UART … Read more
Some say the path to 5G evolution is as complex as a maze. Unlike in the past, there are up to 8 options for 5G networking architecture. Apart from Option 1, which is the 4G architecture, and Options 6 and 8, which have been abandoned by the industry, there are still Options 2, 3, 4, … Read more
Two months ago, I had already flashed the root version of the official firmware for the Phicomm K3 router (see “Flashing ROOT Firmware on Phicomm K3 Router: Enable Ad Filtering, Internal Network Penetration, and Aria2 Features”), but during use, I found that it occasionally lost connection, and the ad filtering effect was not ideal, especially … Read more
NO.1 Pi Hole Note: This Pi Hole deployment on OpenWrt was successful, but it failed to work. DNS filtering only works within OpenWrt, and there is no data reflected on other clients. Therefore, after this deployment, the R5C will prioritize resolving the wireless card issue, and other plugins and Docker applications will be postponed. I … Read more