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BQ79656EVM-021: Wake up problem on BQ79656EVM for onboard UART(J3 connector) connection.

Jyotirmaya Sahoo
Prodigy 30 points
Part Number: BQ79656EVM-021
Other Parts Discussed in Thread: BQ79616, USB2ANY

I am trying to configure the "BQ79656EVM" board for BMS using "TMS570LS12 LaunchPad". I am following BQ79616 sample code and evaluation board user guide to connect the LaunchPad.

As per sample code of "BQ79616EVM", when I am using USB2ANY connector(J17) of "BQ79656EVM" with TMS750LS12 mcu, actual cell voltage data are printing on the CCS Console window. Wakeup LED(D1) is ON during this operation.

However, for UART connector(J3) of "BQ79656EVM" with TMS750LS12 mcu, zero cell voltage data are printing on the CCS console window. Wakeup LED(D1) is unable to ON during this operation.


Please let me know if any specific changes(any Jumper needed to add) are needed for J3 connector connection.

Another issue during BQ79656 USB2ANY connection with LaunchPad that after Debug secession, if I am providing power to the LaunchPad (not debug), program on the LaunchPad is working properly but BQ79656EVM did not Wakeup (LED(D1) was OFF).