nRF24L01+ Product Specification
7.9Compatibility with ShockBurst™
You must disable Enhanced ShockBurst™ for backward compatibility with the nRF2401A, nRF2402, nRF24E1 and nRF24E2. Set the register EN_AA = 0x00 and ARC = 0 to disable Enhanced ShockBurst™. In addition, the nRF24L01+ air data rate must be set to 1Mbps or 250kbps.
7.9.1ShockBurst™ packet format
Figure 25. shows the packet format with MSB to the left.
Preamble 1 byte |
Address 3-5 byte |
Payload 1 - 32 byte |
CRC 1-2 |
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byte |
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Figure 25. A ShockBurst™ packet compatible with nRF2401/nRF2402/nRF24E1/nRF24E2 devices.
The ShockBurst™ packet format has a preamble, address, payload and CRC field that are the same as the Enhanced ShockBurst™ packet format described in section 7.3 on page 28.
The differences between the ShockBurst™ packet and the Enhanced ShockBurst™ packet are:
•The 9 bit Packet Control Field is not present in the ShockBurst™ packet format.
•The CRC is optional in the ShockBurst™ packet format and is controlled by the EN_CRC bit in the CONFIG register.
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