求cy8c201**系列的iic驱动程序

只看该作者 · 2011-10-9 22:18

请问它的器件地址在哪来的

1万 · 2011-10-9 22:58

你可以看几个应用笔记，其中，AN53490有写：All the devices are shipped from the factory with the default I2C address of 000 0000b.

44207有写如何设置新的地址

44208有写IIC时序

只看该作者 · 2011-10-9 23:27

谢谢，，收下了

只看该作者 · 2011-10-9 23:32

请问它的器件地址是可以改得嘛，我可以通过iic直接读寄存器的地址里的数吗？可有代码参考下。。谢谢

1万 · 2011-10-10 22:03

44207里这样写：CE_BOOL CE_SetDeviceI2CAddress( CE_BYTE bNewDeviceAddress , CE_BYTE bI2CPinDriveMode );

Description：The function of this API is to set the device I2C address. The address is set in the range 0 to 127. The I2C pin drive mode is set either as „Resistive Pull up‟ or „Open Drain Low‟. If the address passed is greater than 127, then the API returns 0 (fail); otherwise, it sets the new address and returns 1 (pass).

Example：CE_SetDeviceI2CAddress ( 5, OPEN_DRAIN_LOW ); sets the device‟s new address as 5, sets the I2C pin drive mode as Open Drain Low, and returns 1.