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Does I2C support multiple masters?
The I2C component is an ideal solution when networking multiple devices on a single board or small system. The system can be designed with a single master and multiple slaves, multiple masters, or a combination of masters and slaves.
There are I2C environments where multiple masters are driving the bus. If two devices start to communicate at the same time the one writing more zeros to the bus (or the slower device) wins the arbitration and the other device immediately discontinues any operation on the bus. …
Is SPI multi-master?
Both single-master and multi-master protocols are possible in SPI. But the multi-master bus is rarely used and look awkward, and are usually limited to a single slave. The SPI Bus is usually used only on the PCB. The SPI Bus was designed to transfer data between various IC chips, at very high speeds.
Is it possible to have signal collision in I2C?
With multiple masters and multiple slaves, signal collision is bound to happen. Fortunately, I2C was designed to have multiple ways of eliminating errors in data transmission: clock stretching, and arbitration.
Is there such a thing as an I2C bus?
There are I2C environments where multiple masters are driving the bus. In such case each device needs to be able to cooperate with the fact that another device is currently talking and the bus is therefore busy.
How does the stop bit work in I2C?
Once the sending device is done sending the data through the bus, it will generate a STOP bit, to signalize the end of that conversation, or generate a repeated start, to hold the bus again for some other data transmission. I2C supports having multiple devices on the same bus.
What happens when slave address is wrong in I2C?
Code hangs on “I2C_Write (SLAVE_ADDRESS);” – after sending the addres byte, the master will wait for the slave to respon with the ACK bit, if the address byte is wrong, or the slave is not physically present, the master will be stuck waiting for a response.