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I2C Question


#1

Just tried to use the I2C on the FEZ to connect to a matrix orbital display
I got the following error while trying to write data on the bus

Any hints ?


#2

That is likely being thrown because the I2C transfer did not succeed. Use the WritePartial function and examine its result to find out why.


#3

My guess is that the address is wrong. Keep in mind that the address is 7 bits, not 8. Try (0x50>>1) or (0x50<<1) and see if either one of these would work.


#4

hi John, Gus

thanks for your suggestions. I will try those this after work. but in betwen i found that according to the datasheet, this display is configured by default to 'RS232. this is a mini zero resistor to remove and another to solder. I need to buy another iron for this (and maybe a pair of new eyes…)
I will try to connect to a SHT 11 in between