This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ79616EVM-021: Try to Wake up BQ79616EVM-021 via Daisy Chain BQ79600EVM-030

Part Number: BQ79616EVM-021

Fails to wake up and auto address the BQ79616 chip.

Communication direction: MCU(SPI)<->BQ79600(Daisy Chain)<->BQ79616

For more information see attached document.

wakeupBq79616_1.pdf

  • Hi Lennart,

    The BQ79600 does not forward the SPI/UART pings to the stack devices. Instead this functionality provided on-demand by writing the correct bit in the CONTROL1 register. 

    Section 7.3.2.3.1 of the BQ79600 datasheet has a table (Table 9) that shows all the necessary steps. From the attached it looks to me that adding the write to CONTROL1[SEND_WAKE] = 1 will resolve the issue.

    Thanks,

    Geoff