The I2C interface supports a bit rate of up to 1Mb/s. Note: The ATECC508A and AT24C16B have different default I2C addresses. For the reference: the same problem is described there, but the author's solution doesn't work for me – I2C busy flag strange behaviour. Some devices are masters – they generate bus clocks and initiate communication on the bus, other devices are slaves and respond to the. An important thing to remember is that the two wires are in open drain configuration and must be pulled HIGH with appropriate pull-up resistor to be able to drive logic HIGH on the bus. It is easy to use protocol, because the clock sync is not involved. c file with the I2C_Init () function configured as per. Let’s open this project and proceed to the “Clock configuration” tab: As you see the input clock signal is taken from the internal high-frequency oscillator (16 MHz).The STM32 board is a Flip32 flight controller which is already using I2C to get sensor information from accelerometer, gyro, compass and barometer, so I'm using the same I2C functions that it uses to access those sensors. 7 kWfor low speed, 3 kWfor standard mode, and 1 kWfor fast mode). stm32 i2c clock configuration STM32CubeMx.
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