UAV project tracking record 65 - wireless transceiver module circuit

The following figure is the schematic diagram of wireless transceiver module and Bluetooth module , Firstly, the wireless transceiver module is introduced ：

  Wireless transceiver module NRF24L01 The functions are as follows ：

nRF24L01 By NORDIC Production work in 2.4GHz~2.5GHz Of ISM Band Monolithic wireless Transceiver chip . The wireless transceiver includes ： Frequency generator 、 Enhanced “SchockBurst” Mode controller 、 power amplifier 、 Crystal oscillator 、 Modulator and demodulator .

　　 The output power channel selection and protocol setting can be through SPI  Interface Set it up . It can be connected to almost all kinds of Single chip microcomputer chip , And complete wireless data transmission .

The functions of the pins are described as follows ：

　 The pins are CSN、SCK、MISO、MOSI、IRQ、CE.

　　CSN： Chip selection line ,CSN Working for low-level chip .

　　SCK： Chip controlled The clock Line （SPI The clock ）

　　MISO： Chip control data line （ In and out ） 

　　MOSI： Chip control data line （ The main out comes from the in ）

　　IRQ： Interrupt signal . wireless communication In the process MCU Mainly through IRQ And NRF24L01 communicate .

　　CE： The mode control line of the chip . stay CSN In the case of low ,CE synergy NRF24L01 Of CONFIG.

Circuit analysis ：

The peripheral circuit of this chip is a typical circuit given in the chip manual . By crystal oscillator circuit , Antenna transceiver circuit and filter circuit .

The principle of the specific antenna circuit has not been found yet , Let's discuss it later ！