可能输出接口：IO、SPI、PWM、UART、I2C等。当前使用SPI。 主频使用最高的32Mhz，则时钟周期T0为31.25ns。考虑灯珠信号，合适的分频数为8(外设ABP1预分频*SPI预分频),即则SPI每一位为250ns ...
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