A N 6 3 3
70
Rev. 0.7
10.13. Packet Reception with Automatic Hopping Capability
The purpose of the standard packet reception with automatic hopping feature example code is to demonstrate how
the radio can receive packets in FIFO mode and how rapidly it scans frequency channels to search for signals.
Once the device is configured into the RX state, it automatically starts hopping through the pre-configured channels
on different frequencies. The given mathematical formula represents how the internal firmware calculates new
frequencies to hop.
The hop table can hold up to 64 channel numbers. The receiver starts receiving at the base channel and hops in
sequence from the top of the hop table to the bottom. It stays on that particular channel for receiving a packet. If no
receiving packet arrives upon given conditions, it will calculate a new scannable RF frequency. The table will wrap
around to the base channel once it reaches the end of the table. A channel number is configured to 0xFF in the
table to indicate that the channel should be skipped.
Figure 51. General Working Mechanism of the Automatic RX Hopping
It can be observed on the radio’s GPIOs how the radio hops from one channel to another according to the hop
condition. The yellow signal shows that it toggles between output high and low when hop occurs. The blue signal
shows that it toggles between output high and low when hop table wraps.
Scannable RF Frequency [Mhz]
Base Frequency [Mhz]
Channel_Number
Stepsize [Mhz]
+
=
Содержание EZRADIOPRO Si4060
Страница 24: ...AN633 24 Rev 0 7 Figure 20 Supply Current versus Time Diagram from Shutdown to RX State...
Страница 67: ...AN633 Rev 0 7 67 Figure 48 Variable Length Packet Reception Flowchart...
Страница 69: ...AN633 Rev 0 7 69 Figure 50 Packet Matching Reception Flowchart...
Страница 73: ...AN633 Rev 0 7 73 Figure 54 Packet Reception with Automatic RX Hopping Flowchart...
Страница 75: ...AN633 Rev 0 7 75 Figure 56 Packet Reception with Manual Rx Hopping...
Страница 80: ...AN633 80 Rev 0 7 Figure 62 Long Packet Transmission Workflow...
Страница 81: ...AN633 Rev 0 7 81 Figure 63 Long Packet RX Flowchart...