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STM32,SI4063,Software-drivenSPI

Stick_Lure
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The software drives the SPI to drive the RF chip, and I add a 0r resistor to the SPI as shown in Figure 1, I can see through the logic analyzer that the SPI corresponds to the program one by one, but I don't understand that the RF chip does not emit signals

Stick_Lure_0-1718799040465.png

 

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