You can refer BMP5 sensor API and example code on github https://github.com/boschsensortec/BMP5-Sensor-API
Ensure that the SPI on the host side is properly initialized, then run the example on github and call bmp5_init checks if the returned Chip ID is correct.
Thank you for answering.
But what I want to hear is the story before we get there.
Initial settings for SPI are in 5.1 Protocol Selection on page 31 of the data sheet.There was an explanation.
When CSB is in low state and 16 clocks are sent and CSB is made high
It should switch to SPI, but it doesn't work.
Failed to initialize.