Linduino  1.3.0
Linear Technology Arduino-Compatible Demonstration Board
2984/DATASHEET_FIGURE_12/DATASHEET_FIGURE_12.ino
Go to the documentation of this file.
1 /*!
2 LTC2984: Multi-Sensor High Accuracy Digital Temperature Measurement System
3 @verbatim
4 
5 DATASHEET_FIGURE_12.ino:
6 Generated Linduino code from the LTC2984 Demo Software.
7 This code is designed to be used by a Linduino,
8 but can also be used to understand how to program the LTC2984.
9 
10 
11 @endverbatim
12 
13 http://www.linear.com/product/LTC2984
14 
15 http://www.linear.com/product/LTC2984#demoboards
16 
17 Copyright 2018(c) Analog Devices, Inc.
18 
19 All rights reserved.
20 
21 Redistribution and use in source and binary forms, with or without
22 modification, are permitted provided that the following conditions are met:
23  - Redistributions of source code must retain the above copyright
24  notice, this list of conditions and the following disclaimer.
25  - Redistributions in binary form must reproduce the above copyright
26  notice, this list of conditions and the following disclaimer in
27  the documentation and/or other materials provided with the
28  distribution.
29  - Neither the name of Analog Devices, Inc. nor the names of its
30  contributors may be used to endorse or promote products derived
31  from this software without specific prior written permission.
32  - The use of this software may or may not infringe the patent rights
33  of one or more patent holders. This license does not release you
34  from the requirement that you obtain separate licenses from these
35  patent holders to use this software.
36  - Use of the software either in source or binary form, must be run
37  on or directly connected to an Analog Devices Inc. component.
38 
39 THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
40 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
41 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
42 IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
43 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
44 LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
45 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
46 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
47 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
48 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49 */
50 
51 
52 
53 /*! @file
54  @ingroup LTC2984
55 
56 */
57 
58 
59 
60 
61 #include <Arduino.h>
62 #include <stdint.h>
63 #include <stdbool.h>
64 #include "SPI.h"
65 #include "Wire.h"
66 #include "Linduino.h"
67 #include "LT_SPI.h"
68 #include "UserInterface.h"
69 #include "LT_I2C.h"
70 #include "QuikEval_EEPROM.h"
71 #include "stdio.h"
72 #include "math.h"
73 
76 #include "table_coeffs_LTC2984.h"
77 
78 #define CHIP_SELECT QUIKEVAL_CS // Chip select pin
79 
80 // Function prototypes
81 void configure_channels();
83 
84 
85 // -------------- Configure the LTC2984 -------------------------------
86 void setup()
87 {
88  char demo_name[]="DC2399"; // Demo Board Name stored in QuikEval EEPROM
89  quikeval_I2C_init(); // Configure the EEPROM I2C port for 100kHz
90  quikeval_SPI_init(); // Configure the spi port for 4MHz SCK
91  quikeval_SPI_connect(); // Connect SPI to main data port
92  pinMode(CHIP_SELECT, OUTPUT); // Configure chip select pin on Linduino
93 
94  Serial.begin(115200); // Initialize the serial port to the PC
95  print_title();
96  discover_demo_board(demo_name);
97 
100 }
101 
102 
104 {
105  uint8_t channel_number;
106  uint32_t channel_assignment_data;
107 
108  // ----- Channel 16: Assign Sense Resistor -----
109  channel_assignment_data =
111  (uint32_t) 0x4E2600 << SENSE_RESISTOR_VALUE_LSB; // sense resistor - value: 5001.5
112  assign_channel(CHIP_SELECT, 16, channel_assignment_data);
113  // ----- Channel 18: Assign RTD PT-1000 -----
114  channel_assignment_data =
121  assign_channel(CHIP_SELECT, 18, channel_assignment_data);
122  // ----- Channel 20: Assign RTD NI-120 -----
123  channel_assignment_data =
130  assign_channel(CHIP_SELECT, 20, channel_assignment_data);
131 
132 }
133 
134 
135 
136 
138 {
139  // -- Set global parameters
142  // -- Set any extra delay between conversions (in this case, 0*100us)
144 }
145 
146 // -------------- Run the LTC2984 -------------------------------------
147 
148 void loop()
149 {
150  measure_channel(CHIP_SELECT, 18, TEMPERATURE); // Ch 18: RTD PT-1000
151  measure_channel(CHIP_SELECT, 20, TEMPERATURE); // Ch 20: RTD NI-120
152 }
#define TEMPERATURE
void assign_channel(uint8_t chip_select, uint8_t channel_number, uint32_t channel_assignment_data)
Header File for Linduino Libraries and Demo Code.
#define RTD_STANDARD__EUROPEAN
LTC2984: Multi-Sensor High Accuracy Digital Temperature Measurement System.
QuikEval EEPROM Library.
void quikeval_SPI_init(void)
Configure the SPI port for 4Mhz SCK.
Definition: LT_SPI.cpp:151
int8_t discover_demo_board(char *demo_name)
Read the ID string from the EEPROM and determine if the correct board is connected.
static void configure_global_parameters()
#define REJECTION__50_60_HZ
static void print_title()
Prints the title block when program first starts.
#define RTD_RSENSE_CHANNEL__16
LT_SPI: Routines to communicate with ATmega328P&#39;s hardware SPI port.
void measure_channel(uint8_t chip_select, uint8_t channel_number, uint8_t channel_output)
#define RTD_EXCITATION_CURRENT__100UA
LT_I2C: Routines to communicate with ATmega328P&#39;s hardware I2C port.
#define RTD_EXCITATION_MODE__NO_ROTATION_SHARING
char demo_name[]
Demo Board Name stored in QuikEval EEPROM.
Definition: DC1880A.ino:97
LTC2984: Multi-Sensor High Accuracy Digital Temperature Measurement System.
void quikeval_SPI_connect()
Connect SPI pins to QuikEval connector through the Linduino MUX. This will disconnect I2C...
Definition: LT_SPI.cpp:138
#define RTD_EXCITATION_CURRENT__10UA
void quikeval_I2C_init(void)
Initializes Linduino I2C port.
Definition: LT_I2C.cpp:394
#define SENSOR_TYPE__RTD_NI_120
#define RTD_STANDARD__JAPANESE
#define SENSE_RESISTOR_VALUE_LSB
#define SENSOR_TYPE__RTD_PT_1000
#define SENSOR_TYPE__SENSE_RESISTOR
uint8_t transfer_byte(uint8_t chip_select, uint8_t ram_read_or_write, uint16_t start_address, uint8_t input_data)
#define RTD_NUM_WIRES__2_WIRE