Other Parts Discussed in Thread: DRV8316, LAUNCHXL-F280049C, DRV8305,
I've been sucessfully communicating with the drv8316 using SPI, I could read all the registers, unlock write, write to some registers. I'm powering the EVM using an 12V/15A power source source and I am communicating with it using a MCU.
MCU [GND, MOSI, MISO, SCK, SS] <-> EVM [AGND, SDI, SDO, SCK, nCS]
I've noticed something weird: When I power-cycled the EVM board from the 12V source, the D3 led as well as the 3.3VBK LED would stay lit, **I had to unpower the MCU to make the leds shut down**.
That means it powers itself from the nCS pin!!!
I was trying different settings, including changeing the SDO_MODE to push-pull mode, power-cycling the device to restore default values.
Then the 3.3VBK led stoppe lighting up, and I could never communicate through SPI again.
I've just ordered a LAUNCHXL-F280049C with the pale hope to revive it, but really, I can't see how I could do anything wrong by just power-cycling and SPI-ing with the board.
I'm quite sad, I have no backup board.