Interfacing MPU6050 and AT91SAM7 using i2c protocol

Started by "ank...@gmail.com [AT91SAM]" November 1, 2014
Hello,
I am facing a problem in interfacing mpu6050 and AT91SAM7SE-EK using i2c protocol. I wanted to read temperature from a register of MPU6050 but I am unable to do so.
I did the following in my code:
1. Enabled the clock for twi
2. disabled the gpio pin and enabled the A-select register
3. Open drained the pins
4. cwgr value =0x2FFFF
5. mmr with the slave address 0x68, mread and 1 byte internal address
6. intenal address = 0x41
7. start signal sent
8. data has to be received but actually not.
Can anybody help me out by making my steps correct and with a testing running code.
Thanks.

Posted by: a...@gmail.com



What value pull-up resistors are you using on CLK and DATA? Are you able to examine the waveforms on these pins? The first step is to establish that the hardware configuration is correct.

Cheers,
Frog