Hi, anyone who cares
I'm using Tinyos 2.x to integrate MMA8451 with micaz nodes. MMA8451 is a
sensor using I2C protocol. I2C has some flags such as I2C_START, I2C_ACK_END,
I2C_STOP, but no flags for Repeat start. What if I use a sensor which using
I2C this way, just like the picture attached?
It signal a repeat start flag after sending Device Address and Register
Address. Should I call I2C write command just with I2C_START,(no I2C_STOP), and
then call I2C read 1 byte command to get slave device's data? like this:
call I2CPacket.write(I2C_START, MMA8451_I2C_ADDR, 1, i2cBuff)；call
I2CPacket.read(I2C_START|I2C_STOP, MMA8451_I2C_ADDR, 1, i2cBuff)；
It should have the same sequence as the picture described.
Any comment will be appreciated.
Best regards. <<attachment: 截图2.png>>
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