Linear Technology DC955A - LTC2483 16-bit Delta-Sigma ADC demo board (req. DC590) DC955A DC955A Scheda Tecnica

LTC2483



2483fc

applicaTions inFormaTion

// If read_LTC2483() does not return non-zero within this time period, something
// is wrong, such as an incorrect i2c address or bus conflict.

      if((x = read_LTC2483(LTC248XADDR)) != 0)
         {
         // No timeout, everything is okay
         timeout = 0;                 // reset timer
         x ^= 0x80000000;             // Invert MSB, result is 2’s complement
         voltage = (float) x;                    // convert to float
         voltage = voltage * 5.0 / 2147483648.0;// Multiply by Vref, divide by 2^31
         lcd_putc(‘\f’);                        // Clear screen
         lcd_gotoxy(1,1);                       // Goto home position
         printf(lcd_putc, “V %01.4f”, voltage); // Display voltage
         }
      else
         {
         ++timeout;
         }
      if(timeout > 200)
         {
         timeout = 200;     // Prevent rollover
         lcd_gotoxy(1,1);
         printf(lcd_putc, “ERROR - TIMEOUT”);
         delay_ms(500);
         }
      } // End of main loop
   } // End of main()