About Kyle Klumper

Kyle Klumper · 2017-09-25

Posted on September 26, 2017 at 02:56Hi there,I am attempting to get an STM32F411CE microcontroller to interface with a BNO055 IMU using the I2C peripheral. This particular IMU uses clock stretching which doesn't seem to work with the HAL_I2C librar...

Kyle Klumper · 2017-10-01

Posted on October 01, 2017 at 19:26It seems that the STM32CubeMX created a HAL_I2C_MspInit function with the wrong pins. Modifying it to PB7 and PB8 seems to make everything work as intended:void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c){GPIO_InitTyp...

Kyle Klumper · 2017-09-28

Posted on September 28, 2017 at 17:18Just an update. It appears the SCL line is not dropping low to finalize the transfer. As a fix, I added a function at the end of each data write to manually pull the SCL line low which seems to get the peripheral...

Kyle Klumper · 2017-09-26

Posted on September 26, 2017 at 17:45Hi JW,Thanks for the quick response. I've re-uploaded the images so you should be able to see them now.I tried modifying TRISE but it had no effect on the waveform. I made sure to modify with I2C disabled as per ...

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[Solved] STM32F4 I2C Master Clock Stretching Fail

Re: [Solved] STM32F4 I2C Master Clock Stretching Fail

Re: [Solved] STM32F4 I2C Master Clock Stretching Fail

Re: [Solved] STM32F4 I2C Master Clock Stretching Fail