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Continue to ChatI2C use on the STM32F103R Medium Density Devices https://micromouseonline.com/2011/09/10/i2c-use-on-the-stm32f103r-medium-density-devices/
I2C use on the STM32F103R Medium Density Devices https://micromouseonline.com/2011/09/10/i2c-use-on-the-stm32f103r-medium-density-devices/