My two slave SPI setup on arduino not working correctly
The ADXL345 uses SPI_MODE3 and DPS310 the SPI_MODE0. The libraries for these devices don't use SPI transactions, but set the settings only in begin(), so they can't be used together.
Your options to solve this is either to put one sensor on software SPI or to put one or both sensors on I2C.
The ADXL345 can be used as I2C device. Its library supports I2C with the constructor when no parameters are provided. Does your module have an option to wire it to I2C?
The Adafruit library for DPS310 has built-in software SPI, so you can use it with any set of pins. And it too supports I2C.