Address frame: Each device class has a fixed 7-bit ‘device address’ which is used to identify itself from other devices in the same I☬ network followed by a R/W bit indicating whether this is a read (1) or write (0) operation.

Start condition can be issued multiple times (repeat start) in case a master wants to retrieve more data from slaves. Start condition : the master device leaves SCL high and pulls SDA low, which informs all slave devices that a transmission is about to start.The basic hardware connection for I2C communication (SCL, SDA).If you are not familiar with I2C, I suggest that you take a look at the tutorial on Sparkfun website and come back here with this information in mind: I found this article from Sparkfun describe the fundamentals of I2C in a very intuitive and easy way to understand. Let’s get started.īasic I☬ – What should we notice? I2C basic hardware connection Finally, another example to show how to set up two I☬ modules of the same STM32F0 (1 master, 1 slave) to transfer data with each other.An example showing how to connect and read data from a temperature and humidity sensor (HDC1080) through I☬ port and then, display the temperature and relative humidity on an OLED screen (SSD1306 controller), also through the same I☬ port.Overview of the I☬ peripheral of the STM32F051 on the STM32F0 Discovery kit.Some basic ideas of the I2C and when we need to use it.Therefore, in this tutorial, I will be covering the following parts: Moreover, I have recently received free samples from ICStation, which are some I2C sensors and OLED screens that gave me more motivation to do this STM32F0 I2C tutorial. Hence, I thought that I need to spend some time to continue with this tutorial series to finish all the basic peripherals. Only a few peripherals including I2C, SPI, DAC, TSC and WDG are left to be discovered. However, we have come a long way to finish almost all the basic aspects of the STM32F0 chip including the GPIO, Interrupts, Timer, Counter, PWM, UART and ADC. Being occupied by all the courses and my research, I hardly had time to continue with the STM32F0 tutorial series I started almost two years ago. candidate at Nanyang Technological University (NTU) Singapore. Hi everyone, I’m back :) Another year has come with lots of opportunities and challenges presented to me as I now become a fresh Ph.D.

2 wire library for stm