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Part Number: ADS8688
I am having some problems with the SPI communication between an ATMega2560 MCU and the ADS8688. The MCU only receive 0xFFFF from ADS8688 regardless of the program/command registers sent. Here is an example of the response from ADS8688 when the MCU send an Auto Channel Sequence with Reset (AUTO_RST) command (data is captured using a logic analyzer):
The hardware design can be seen below:
I have checked the signal is transmitted accurately from the MCU to the ADS8688. The Arduino library being used is obtained from: Any help is greatly appreciated.
Art Kay Senior Applications Engineer High Performance Linear
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In reply to Art Kay:
Thank you so much for the prompt reply. I have attached the photos in the original post but for some reasons they didn't show up. Here is the waveform of sending the AUTO_RST command (0xA000):
I have tried with other registers but only receive 0xFFFF. Here is the hardware design:
In reply to Khoi Hoang:
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