Hello community,
I'm trying to hook up a BMI323 with my CC1311 eval board from TI.
The devices are connected via SPI.
When I read out the Chip ID by sending two bytes (0x80 and 0x00) I get 0x00 (without external pull-ups) or 0xFF (with external pull-ups) as response which is wrong.
After connecting my Oscilloscope I realised that the MISO signal from the BMI323 barely changes the voltage levels. I tried with and without external 10kOhms pull up resistors but that didn't help.
Here are the measured signals:
The blue signal is MOSI, the yellow signal is MISO. MOSI looks like expected while MISO is bouncing around the high level (pull-ups in place). The signal is too weak to be processed by my µC.
Is my sensor defect or do I have to send something via SPI upfront to make MISO work properly?
Thanks a lot in advance for your help.
Best regards,
Martin