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BQ76952EVM: BQ7695204: Error when changing default communication spi to I2C

Thuc Bui
Prodigy 20 points
Part Number: BQ76952EVM
Other Parts Discussed in Thread: BQSTUDIO, EV2400

Hi TI team,

I have a BQ769052EVM board use BQ7695204. When I change default communication from spi to I2C by commant SWAP_TO_I2C using BQStudio, 

I got error below

It's sometime successful when I send command continuously.

In revert, when I change from I2C to spi, It's allways successful with only one time send command SWAP_TO_SPI

I use BQStudio version: 1.3.104, EV2400 tool firware version: 0.32

Please help me to check this issue.

Thanks.

  • 0
    TI__Prodigy 720 points

    Hi Thuc, 

    This is likely due the on board jumpers you would need to change for different communication protocols. 

    Where it says "SCL" and SDA" you would need to connect the black jumpers from the middle prong of each section to the respective prong you want to use (i.e. for i2C you would want it connected to uC_SCL and and uC_SDA). Unfortunately, this is not seamless but what you'll need to do is press the SWAP_TO_I2C then move the jumpers to connect the middle prong and uC_SCL and middle prong to uC_SDA. You may need to restart BQStudio, but after restart it should be in i2c mode.

    Best,

    Andrew