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发表于 2014-6-27 10:09:56
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RE:KL02Z IIC求助
我认为这里只是举例,说明了从机速度是主机的1/4,但是的确感觉你的I2C时钟太快了。你的bus和system时钟是多少呢?在I2C章节最开始的地方看到:
The inter-integrated circuit (I2C, I2C, or IIC) module provides a method of
communication between a number of devices. The interface is designed to operate up to
100 kbit/s with maximum bus loading and timing. The I2C device is capable of operating
at higher baud rates, up to a maximum of clock/20, with reduced bus loading. The
maximum communication length and the number of devices that can be connected are
limited by a maximum bus capacitance of 400 pF.
你通信频率降到小于100K看能通信吗? |
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