Thread: Discussion Walkera DEVO Tx Hacking
View Single Post
Old Mar 11, 2012, 06:02 AM
rcH4x0r is offline
Find More Posts by rcH4x0r
Registered User
Joined Jun 2010
125 Posts
The old 4 channel Walkera sets based on CYRF6936 had what I think is a pre amplifier on the receiver. The CYRF6936 is capable of transmitting and receiving but not at the same time (half duplex) so it could handle both tasks.

If the telemetry function needs a preamp then that would explain the need for a physical upgrade rather than a software update.

There's two SPI busses being used in the 8S firmware I have looked at, I dont know which is which yet.

SPI1 uses bit 2 of GPIO Port B for CS
SPI2 uses bits 8 & 12 of GPIO Port B for CS (2 pins for CS ?!?)

Can anybody who opened their Devo8 tell me where these GPIOs go? My Devo8 is on its way from HK....
rcH4x0r is offline Find More Posts by rcH4x0r
Reply With Quote