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#17
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Re: anyone else use the I2C bus?
Multiple sensors does work from labview, I have tested up to 5, though I have found once you put 4/5 with a wire length of 18" you do need to add additional resistors to get reliable responses.
Having a more flexible api would be very nice: 1. separate write/read will be useful - see HMC6343 below 2. Timeout on bus especially slave clock stretching. I have seen cases where a sensor goes wrong and holds the SCK low, the bus stalls, I2C read stalls, etc. Some comments about sensors: devantech - srf08, cmps03, tap81 should all work. I have tried the srf08 with the example and it works. I have used all the rest before and their I2C interface is similar. I2C-IT IR - works LIS3LV02DQ - works (need a 3.3V to 5V convertor). I have tried other LISX accelerometers in the past, they all have similar I2C so should work. HMC6343 - so far not working and I dont see a way to get the required timing. PSP-NX Mindsensors - works, the other mindsensors have the same I2C interface so should work though I haven't used them before. On a separate note - can we have the SPI interface more flexible as well. As far as I can tell, it supports mode 0 and 1 but not mode 2/3 (where clock is inactive high). |
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