Linduino  1.3.0
Linear Technology Arduino-Compatible Demonstration Board

Linear Technology DC570A Demonstration Board. More...

Detailed Description

Linear Technology DC570A Demonstration Board.

LTC2440: 24-Bit, Differential Delta Sigma ADCs with Selectable Speed/Resolution

NOTES
  Setup:
   Set the terminal baud rate to 115200 and select the newline terminator. Equipment
   required is a precision voltage source and a precision voltmeter. Additionally,
   an external power supply is required to provide a negative voltage for Amp V-.
   Set it to anywhere from -1V to -5V. Set Amp V+ to Vcc. Ensure the COM and REF-
   pins are connected to ground. The REF+ pin should be connected to +5V.

  How to test Differential Mode:
   The voltage source should be connected with positive and negative leads to paired
   channels. The voltage source negative output must also be connected to the COM
   pin in order to provide a ground-referenced voltage. Ensure voltage is within
   analog input voltage range -0.3V to +2.5V. Swapping input voltages results in a
   reversed polarity reading.


USER INPUT DATA FORMAT:
 decimal : 1024
 hex     : 0x400
 octal   : 02000  (leading 0 "zero")
 binary  : B10000000000
 float   : 1024.0

http://www.linear.com/product/LTC2440

http://www.linear.com/product/LTC2440#demoboards

Copyright 2018(c) Analog Devices, Inc.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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Definition in file DC570A.ino.

Go to the source code of this file.

Functions

static void print_title ()
 Prints the title block when program first starts. More...
 
static void print_prompt ()
 Prints main menu. More...
 
static void print_user_command (uint8_t menu)
 
static void menu_1_read_differential ()
 Read channels in differential mode. More...
 
static void menu_2_set_OSR ()
 
static void setup ()
 Initialize Linduino. More...
 
static void loop ()
 Repeats Linduino loop. More...
 
static void menu_set_OSR ()
 Set the OSR. More...
 

Variables

static uint8_t demo_board_connected
 Set to 1 if the board is connected. More...
 
static int16_t OSR_mode = LTC2440_OSR_32768
 The LTC2440 OSR mode settings. More...
 
static float LTC2440_vref = 5.0
 

Function Documentation

◆ loop()

static void loop ( void  )
static

Repeats Linduino loop.

Definition at line 123 of file DC570A.ino.

◆ menu_1_read_differential()

static void menu_1_read_differential ( )
static

Read channels in differential mode.

Definition at line 178 of file DC570A.ino.

◆ menu_2_set_OSR()

static void menu_2_set_OSR ( )
static

◆ menu_set_OSR()

static void menu_set_OSR ( )
static

Set the OSR.

Definition at line 212 of file DC570A.ino.

◆ print_prompt()

static void print_prompt ( )
static

Prints main menu.

Definition at line 169 of file DC570A.ino.

◆ print_title()

static void print_title ( void  )
static

Prints the title block when program first starts.

Definition at line 154 of file DC570A.ino.

◆ print_user_command()

static void print_user_command ( uint8_t  menu)
static

◆ setup()

static void setup ( void  )
static

Initialize Linduino.

Definition at line 100 of file DC570A.ino.

Variable Documentation

◆ demo_board_connected

uint8_t demo_board_connected
static

Set to 1 if the board is connected.

Definition at line 95 of file DC570A.ino.

◆ LTC2440_vref

float LTC2440_vref = 5.0
static

Definition at line 97 of file DC570A.ino.

◆ OSR_mode

int16_t OSR_mode = LTC2440_OSR_32768
static

The LTC2440 OSR mode settings.

Definition at line 96 of file DC570A.ino.