9 years, 1 month ago.

How to switch between different data rates?

#include "ADXL345_I2C.h"
#include "CheckRTC.h"

 ADXL345_I2C accelerometer(D14, D15);
 //Serial pc(USBTX,USBRX);
 Serial pc(D8, D2);
 


 int main() {
     pc.baud(115200);
     int readings[3] = {0, 0, 0};
     time_t seconds;
    char buf[64];
    struct tm t;
 
    t.tm_year       = 15 + 100;
    t.tm_mon        = 10 - 1;
    t.tm_mday       = 07;
    t.tm_hour       = 14;
    t.tm_min        = 27;
    t.tm_sec        = 00;
    seconds = mktime(&t);
    set_time(seconds);
     
     pc.printf("Starting ADXL345 test...\n");
     wait(.001);
    pc.printf("Device ID is: 0x%02x\n", accelerometer.getDeviceID());
    wait(.001);
    
     // These are here to test whether any of the initialization fails. It will print the failure
    if (accelerometer.setPowerControl(0x00)){
         pc.printf("didn't intitialize power control\n"); 
         return 0;  }
     //Full resolution, +/-16g, 4mg/LSB.
     wait(.001);
     
     if(accelerometer.setDataFormatControl(0x0B)){
        pc.printf("didn't set data format\n");
        return 0;  }
     wait(.001);
     
     //3.2kHz data rate.
     
     
     //Measurement mode.
     
     if(accelerometer.setPowerControl(MeasurementMode)) {
        pc.printf("didn't set the power control to measurement\n"); 
        return 0;   } 
        
        
   switch ( int i = 7 ) {
   case 1:     
     accelerometer.setDataRate(ADXL345_3200HZ);
     break;
   case 2:  
     accelerometer.setDataRate(ADXL345_1600HZ);
     break;
   case 3:  
     accelerometer.setDataRate(ADXL345_800HZ);
     break;
   case 4:  
     accelerometer.setDataRate(ADXL345_400HZ);
     break;
   case 5:  
     accelerometer.setDataRate(ADXL345_200HZ);
     break;
   case 6:  
     accelerometer.setDataRate(ADXL345_100HZ);
     break;
   case 7:  
     accelerometer.setDataRate(ADXL345_50HZ);
     break;
   case 8:  
    accelerometer.setDataRate(ADXL345_25HZ);
    break;
   case 9: 
    accelerometer.setDataRate(ADXL345_12HZ5);
    break;
   case 10: 
    accelerometer.setDataRate(ADXL345_6HZ25);
    break;
  }
  int i = 1;
    
     while (1) {
     
         
         seconds = time(NULL);
        strftime(buf,40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds));
        
        
         
         accelerometer.getOutput(readings);
         
      
          i++;
        pc.printf("\n\r %i, %i, %i %d", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2], i);
       pc.printf("                      %s\r\n",buf);
     }
 
 }

Question relating to:

Be the first to answer this question.