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The SI24R1 and NRF24L01+ are fully compatible (SPI operation timing, register definitions, and operating status diagrams) and can communicate with each other to support all communication functions of the NRF24L01+.
Question 1: 7dbm power output
A: The default output power of the SI24R1 is 2~3dBm. If 7dBm is to be output, write the least significant bit of the register address 0x06 (RF_SETUP) to 1 (NRF24L01+ is not used, the default is 0). That is, the lowest four bits of the 0x06 register are 1111 is OK.
Question 2: SI24R1 launch issue
A: The SI24R1 launch operation is exactly the same as that of the NRF24L01+.
The NRF24L01 is a monolithic transceiver chip that operates in the universal ISM band of 2.4-2.5GHz. The wireless transceivers include: Frequency Generator Enhanced SchockBurstTM Mode Controller Power Amplifier Crystal Amplifier Modulator Demodulator Output Power Channel Selection and Protocols Settings can be set to very low current consumption via the SPI interface.
Ball open ISM band, maximum 0dBm transmit power, license-free use.
Supports six-channel data reception
1. Low operating voltage: 1.9 ~ 3.6V low voltage operation
2. High speed: 2 Mbps, due to short air transmission time, greatly reducing the collision phenomenon in wireless transmission (software setting 1 Mbps or 2 Mbps air transmission rate)
3. Multi-frequency point: 125 frequency points to meet the needs of multi-point communication and frequency hopping communication
4. Ultra-small: Built-in 2.4GHz antenna, small size, 15x29mm (including antenna)
5. Low power consumption: When working in response mode communication, fast over-the-air transmission and startup time greatly reduce current consumption.
6. Low application cost: NRF24L01 integrates all the high-speed signal processing parts related to the RF protocol, such as: automatic retransmission of lost data packets and automatic generation of response signals, NRF24L01's SPI interface can use the microcontroller's hardware SPI port connection or use microcontroller I/O port simulation, internal FIFO can interface with various high and low speed microprocessors, easy to use low-cost microcontroller.
7. Easy to develop: Because the link layer is fully integrated on the module, it is very easy to develop. Automatic retransmission function, automatic detection and retransmission of lost data packets, retransmission time and number of retransmissions can be automatically controlled by the software to automatically store data packets that have not received the response signal. After receiving valid data, the module automatically sends a response. Signal, no need to program separately Carrier detection - Fixed frequency detection Built-in hardware CRC Error detection and point-to-multipoint communication address control Packet transmission error counter and carrier detection function can be used for frequency hopping setting Six receiver channel addresses can be set at the same time. The open receive channel standard pin Dip2.54MM pitch interface facilitates embedded applications.
