Hello~~Fish At present, there is no oscilloscope on hand, and the SPI wave signal is attached later. I currently have two questions. Thank you~~ 1. Use BMX160 Shuttle Board to communicate through SPI, CS PIN needs set zero or one at the beginning ??? 2. According to your last reply, I executed rslt = null_ptr_check(dev) in the int8_t bmi160_init (struct bmi160_dev * dev) function, and the result is zero, so it means that my SPI pre-operation should be completed?? It is just whether the MCU uses SPI to connect with BMX160 Success depends on the wave pattern?
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