Nexmon is our C-based firmware patching framework for Broadcom/Cypress WiFi chips that enables you to write your own firmware patches, for example, to enable monitor mode with radiotap headers and frame injection. Before we started to work on this repository, we developed patches for the Nexus 5 (with bcm4339 WiFi chip) in the bcm-public repository and those for the Raspberry Pi 3 (with bcm43430a1 WiFi chip) in the bcm-rpi3 repository. To remove the development overhead of maintaining multiple separate repositories, we decided to merge them in this repository and add support for some additional devices. In contrast to the former repositories, here, you can only build the firmware patch without drivers and kernels. The Raspberry Pi 3 makes an exception, as here it is always required to also build the driver.