i2c repeat start
时间: 2024-05-28 17:08:34 浏览: 19
I2C repeat start is a signal that initiates a new transmission on the I2C bus without releasing the bus. It is used to send multiple data bytes to the same slave device without the need to readdress the device.
The I2C repeat start condition is generated by the master device after sending a data byte to the slave device. Instead of sending a stop condition to release the bus, the master sends a start condition followed by the slave address and the R/W bit. This tells the slave device that the master wishes to continue the communication and there is no need to release the bus.
Repeat start is useful in situations where multiple data bytes need to be sent to the same slave device, such as when reading or writing a large amount of data from a sensor or memory device. It saves time and reduces the overhead of address and control byte transmission.
It is important to note that not all I2C devices support the repeat start condition. It is recommended to check the device datasheet to confirm if it is supported.
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