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Firmware refers to software running on an embedded system or microcontroller to control hardware directly.

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ADS1234 and STM32L

I have an AD4115 ADC that has the same scheme for notifying the host uC that it's got data ready: it brings MISO/DOUT/~RDY low. I was able to get the STM32 to switch the pin between SPI and GPIO behav …
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