Digital signal input

[Lep]

The sampling frequency is 256kHz, it is an ADC that collects ECG signals.(The question is really not about ADC), what should I belong to with this question?

My problem is that the analog signal is output in four channels in parallel after the ADC, when clk2 is rising edge (256kHZ), the digital signal of 4bit is output (D3 D2 D1 D0). I want to use stm32wb55rgv6 to capture these signals, where should I start?

[MM..1]

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