On Thu, Apr 29, 2021 at 02:54:09AM +0000, Tung Pham wrote: > So my questions again are: > > 1) Have you verified that the struct cp210x_quad_port_config above > actually matches what the device uses? > > 2) Do you have any documentation of the structures as expected by the > device firmware (not your library)? > > > Tung Pham: the device return some unused bytes, and manufacturing > library already discard these byte to assign value to PORT_CONFIG, so > you don't see padding byte on PORT_CONFIG structure. you can find > the structure of port setting in this code: > > https://www.silabs.com/documents/public/software/USBXpressHostSDK-Linux.tar > > > \USBXpressHostSDK-Linux\USBXpressHostSDK\CP210x\srcpkg\cp210xmanufacturing_1.0.tar\cp210xmanufacturing_1.0\cp210xmanufacturing\cp210xmanufacturing\src\CP2104Device.cpp > > CP210x_STATUS CCP2104Device::GetPortConfig(PORT_CONFIG* PortConfig) Thanks for confirming. Johan
