Hi, All
I have encountered a wired problem.
I have work out the drivers of illumination sensor(bh1750), barometric
pressure sensor(bmp085) using nesC language on tinyos 2.x platform. The driver
board is designed by my colleague.
But if I change the batteries of the micaz node which I work with into new
batteries(the normal one, 1.5V), I'll not able to get the sensor data using the
same node which works well just now.
The sensors is using I2C protocol. When I watched the I2C data pin signal
using oscilloscope, I noticed that the data pin signal behaved the same as the
clock pin.
I write this letter not to ask to solve the problem, but ask to help me to
locate where the problem is. I thought the hardware design is not correct, but
I'm not sure. Or the I2C protocol is not right? What's your opinion.
Many thanks in advance.
Best Regards.
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