Angelos
Key Veteran
Location: nr Oxford, OX11, UK
| irq,
the debug port has ground and two programmable pins that help me check how the firmware works. I connect these to the oscilloscope and get the firmware to drive them so I can observe internal operations. One of these is programmed to generate one pulse for each frame that was received with errors so I can hook up a counter there and see how it performed in flight. The other pin generates a synchronization pulse that triggers the oscilloscope in order to lock at the beginning of the frame that I want. There are 4 different types of frames containing different information.
z11355,
don't call it reverse engineering because it is illegal  In fact I did nothing more than observing the data stream then re-engineer a decoder  |
