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SBrow5's avatar
SBrow5
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7 years ago

Can I use the ARM i2c as a slave, using the normal driver?

I have an SOC Cyclone V FPGA, and I use i2c as a master, but I would like to use it as a slave so that I can use a different device to connect to multiple SOC chips and ask for data from them using i...
SBrow5's avatar
SBrow5
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7 years ago

Consider then, that the ARM is being used to process some data and is acting as a sensor for another device that is collating it. The Cyclone V Handbook, HPS Technical Reference Manual, section 20 describes the I2C port. It says "Each I2C controller must be programmed to operate in either master or slave mode only". The implication is I can use it as a slave, but I was wondering if the default driver that came with it under Linux supports slave mode, or is there an alternative driver that can be targetted using a different DTS/B?