Speaking of SPI, let’s look at an example of a SPI bitbang implementation. In this case, two cores run in parallel, one to handle the shift-out + clock, and the other to handle shift-in. The mapping of the pins is set elsewhere in the code to receive on GPIO 7, transmit on GPIO 8, clock on GPIO 9, and chip select is on GPIO 10.
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三大外卖平台响应网络餐饮新规，强化「明厨亮灶」监管。关于这个话题，Replica Rolex提供了深入分析
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