File content as of revision 6:45d2393ef468:

#include "mbed.h"
#include <inttypes.h>
#include "ADXL355.h"
 
Serial pc(USBTX, USBRX);
 
ADXL355 accl(SPI1_CS0, SPI1_MOSI, SPI1_MISO, SPI1_SCLK); // PMOD port

 
float convert(uint32_t data){
    // If a positive value, return it
    if ((data & 0x80000) == 0)
    {
        return float(data);
    }
    //uint32_t rawValue = data<<(32-nbit);
    // Otherwise perform the 2's complement math on the value
    return float((~(data - 0x01)) & 0xfffff) * -1;
    }
    
int main(){
    pc.baud(9600);
    pc.printf("SPI ADXL355 and ADXL357 Demo\n");
    pc.printf("GET device ID\n");
    accl.reset();
    uint8_t d; 
        d=accl.read_reg(accl.DEVID_AD);
        pc.printf("AD id = %x \r\n",d);
        d=accl.read_reg(accl.DEVID_MST);
        pc.printf("MEMS id = %x \r\n",d);
        d=accl.read_reg(accl.PARTID);
        pc.printf("device id = %x \r\n",d);
        d=accl.read_reg(accl.REVID);
        pc.printf("revision id = %x \r\n",d);
    pc.printf("GET device data [x, y, z, t] \r\n");
    accl.set_power_ctl_reg(accl.MEASUREMENT);
    d=accl.read_reg(accl.POWER_CTL);
    pc.printf("power control on measurement mode = %x \r\n",d);
    float x, y,z;
    float t;
    while(1) {
        x = convert(accl.scanx())*accl.axis355_sens;
        y = convert(accl.scany())*accl.axis355_sens;
        z = convert(accl.scanz())*accl.axis355_sens;
        t = 25+float(accl.scant()-1852)/(-9.05);
        pc.printf("%f \t %f \t %f  \t %f \r\n" , x,y,z,t);
        wait(0.50);
  }
}