About EricChristenson-at-eaton-com

EricChristenson-at-eaton-com · 2024-04-09

I have I2C working properly, but can't seem to figure out how to recover the bus and get it to working again if I test for the presence of a device that is not on the bus and therefore I2C_Mem_Read() returns HAL_ERROR. There are other devices on the...

EricChristenson-at-eaton-com · 2024-03-07

So, I was having lots of trouble getting an I2C discrete I/O expander chip working with the STM32H745 Disco board, and discovered, besides needing to shift the I2C address left by one bit, that the I2C clock goes faster the more you increase any of t...

EricChristenson-at-eaton-com · 2024-04-17

In the end, my target I2C device (TUSB320LAI) needs to have its enable pin in the correct state or it won't talk on I2C at all, and none of that depended on the presence or absence of the other device. It helps to get a little distance, re-run the w...

EricChristenson-at-eaton-com · 2024-04-10

(Grin) You may be right, but I am an engineer and it can be said that I study failure....in this case I might just need the bit to disable I2C4 in hardware to reset the AF (Acknowledge Failure) flag.

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STM32H745I I2C Recovery after addressing nonexistent device?

Bug: STMCubeMX I2C with STM32H745 Disco board -- clock dividers reversed

Re: STM32H745I I2C Recovery after addressing nonexistent device?

Re: STM32H745I I2C Recovery after addressing nonexistent device?