Thanks Richard. MELabs also told me it was $40 for address. That was the problem! That and the fact my outputs are active low and I was sending active high bits.
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Re: need help with PBP, I2C and MCP23017
Thanks Richard. MELabs also told me it was $40 for address. That was the problem! That and the fact my outputs are active low and I was sending active high bits.
Re: need help with PBP, I2C and MCP23017
Address bits are connected to ground. for Arduino I could use address $20 or 0 to access, the latter if I used one of the libraries.
need help with PBP, I2C and MCP23017
I've decided to abandon 5 months of learning C++ so I could use Arduinos and going back to the superior PBP and PIC MCUs. Having said that, Arduino had the most fantastic libraries which made I2C...