User's Manual

MOD090-HP
User’s Manual
PAGE 26
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Get Data Example (AP Side)
1. If Data Ready Flag is set assert /CS_BB (drive line low) and issue getPacket
(0x0A) command and delay for 4 µs.
2. Gets rst byte to determine what SU sent the packet.
3. Get next two bytes to determine the packet size in bytes.
4. Get all data bytes
5. Deassert /CS_BB (drive line high) and delay for 6 µs.
6. If Data Ready is still set then repeat all steps.
RSSI Example
1. Assert /CS_BB (drive line low) and issue getRSSIreadings (0x09) command
and delay for 4 µs.
2. Send rst byte to tell MOD090-HP what step size and number of samples to
use.
3. Get two bytes to determine the Base Frequency multiplier.
4. Get two bytes to determine the Numerator and Denominator for frequency
calculations.
5. Get one byte to determine how many channel markers there are.
6. Get all channel markers.
7. Wait for Data Ready to be set.
8. Get two bytes to determine the number of data points to be read.
9. Get four bytes for Step Number, Peak Power, and Average Power.
10. Repeat step 9 for all data points.
11. Deassert /CS_BB (drive line high) and delay for 6 µs.