I've been working on this for some months and I succeed connecting 2 ADXL345 over i2c, it's a shame to have only 2 adresses for that.
Anyway, i want to connect about 8 sensors and that's why I need SPI. I thought it was only needed to change the CS between the sensors but as I see is more than that.
I didn't understand the adresses change you said. The original adresses posted by rodiaIt works fine for me with one sensor.
For what is this adresse change ?
char DATAX0 = 0xB2; //X-Axis Data 0
char DATAX1 = 0xB3; //X-Axis Data 1
char DATAY0 = 0xB4; //Y-Axis Data 0
char DATAY1 = 0xB5; //Y-Axis Data 1
char DATAZ0 = 0xB6; //Z-Axis Data 0
char DATAZ1 = 0xB7; //Z-Axis Data 1