I2c1 problem at frequencies above 8MHZ
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2017-07-03 4:26 AM
Hi,
I use from stm32f103c8t6.
I haven't problem with i2c1 in this micro but at frequencies above 8mhz , i2c1 does not work.
While the i2c2 has no problems at all system frequencies.
I want use usb-cdc ,
for this reason I can not set the system frequency to 8mhz.
I set the system clock in the following ways , but i2c1 does not work!
What do you think the problem is?
pls help me if u can.
tnx!
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2017-07-03 7:37 AM
>>
What do you think the problem is?
Perhaps an issue with the I2C1 settings or code?
>>
but i2c1 does not work!
Yes, so I don't know what that means. Take a look at the bus signals on a scope or analyzer, and confirm if those match the expectations of the attached devices. Check the address output, and ACK response from the device
Up vote any posts that you find helpful, it shows what's working..
