8/16/2023 0 Comments Nucleo board i2c peripheralIf the address match slave will send an Acknowledge bit to the master and the master receive the Acknowledge bit. If the Read/Write bit is 0 that indicates the master will write the data to the slave and if the bit is 1 that indicates the master will read data from the slave.Īfter sending the addressed slave will compare the data with its own address. The address phase contains 8 bits, First 7 bits are the address of the slave, and the remaining bit decide the read or write operation. Master first produces a start condition and after the start condition address phase follows. In I2C, data transfer is always initiated by the master on the SDA line. High-Speed Mode (HS-Mode): Data rate up to 3.4 Mbits/sec Understanding I2C protocol Standard Mode (SM): Data rate up to 100 Kbits/sec,įast Mode (FM): Data rate up to 400 Kbits/secįast mode plus (FM+): Data rate up to 1 Mbits/sec All the modes are downward-compatible means any device may be operated at a lower bus speed but Ultra Fast-mode devices are not compatible with previous versions because the bus is unidirectional. There are four different I2C modes and they are Standard-mode, Fast-mode, Fast-mode Plus, and High-speed mode. The bus capacitance limits the number of interfaces connected to the bus. The output stages of devices must have an open-drain or open-collector configuration. Both the SDA and SCL lines are held high when the bus is free. Both SDA and SCL are bidirectional lines connected to a positive voltage supply via pull-up resistors. I2C is a 2-wire protocol and they are called SDA and SCL. It is a synchronous, half-duplex, multi-master, multi-slave, packet-switched, single-ended, serial data communication protocol. This protocol was originally created by Philips Semiconductors (now NXP) back in 1982. I2C is a serial data communication protocol used to communicate between Integrated Circuits(ICs). Interfacing STM32 with I2C LCD : HAL example code included.Stm32 Bluetooth module HC-05 interfacing with HAL code example.How to create a project in stm32CubeMX for Keil uvision Ide.How to create stm32 project in stm32cubeide with example code.STM32 ADC Interfacing with HAL code example.For troubleshooting, some extremely useful test equipment.MPU6050 Accelerometer and Gyroscope Sensor.How to handle I2C transactions in STM32.I2C peripheral in STM32 Microcontroller.
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