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吐槽:28027的SPI速度太慢了!

Internal clock prescalers must be adjusted such that the SPI clock speed is limited to the following SPI clock rate:
Master mode transmit 15-MHz MAX, master mode receive 10-MHz MAX
Slave mode transmit 10-MHz MAX, slave mode receive 10-MHz MAX.

  • 综合最好时钟考虑 SPI接收 缓存 解码 处理 加上CPU干其他的事
    这速度也就差不多了 太高也意义不大了