Linduino  1.3.0
Linear Technology Arduino-Compatible Demonstration Board
2983/DC2213_DEDICATED_RTD_BOARD/DC2213_DEDICATED_RTD_BOARD.ino
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1 /*!
2 LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System
3 @verbatim
4 
5 DC2213_DEDICATED_RTD_BOARD.ino:
6 Generated Linduino code from the LTC2983 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 LTC2983.
9 
10 
11 @endverbatim
12 
13 http://www.linear.com/product/LTC2983
14 
15 http://www.linear.com/product/LTC2983#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 LTC2983
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_LTC2983.h"
77 
78 #define CHIP_SELECT QUIKEVAL_CS // Chip select pin
79 
80 // Function prototypes
81 void configure_channels();
83 
84 
85 // -------------- Configure the LTC2983 -------------------------------
86 void setup()
87 {
88  char demo_name[]="DC2209"; // 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 3: Assign Sense Resistor -----
109  channel_assignment_data =
111  (uint32_t) 0x1F4000 << SENSE_RESISTOR_VALUE_LSB; // sense resistor - value: 2000.
112  assign_channel(CHIP_SELECT, 3, channel_assignment_data);
113  // ----- Channel 5: Assign RTD PT-100 -----
114  channel_assignment_data =
121  assign_channel(CHIP_SELECT, 5, channel_assignment_data);
122  // ----- Channel 8: Assign RTD PT-100 -----
123  channel_assignment_data =
130  assign_channel(CHIP_SELECT, 8, channel_assignment_data);
131  // ----- Channel 11: Assign RTD PT-100 -----
132  channel_assignment_data =
139  assign_channel(CHIP_SELECT, 11, channel_assignment_data);
140 
141 }
142 
143 
144 
145 
147 {
148  // -- Set global parameters
151  // -- Set any extra delay between conversions (in this case, 0*100us)
153 }
154 
155 // -------------- Run the LTC2983 -------------------------------------
156 
157 void loop()
158 {
159  measure_channel(CHIP_SELECT, 5, TEMPERATURE); // Ch 5: RTD PT-100
160  measure_channel(CHIP_SELECT, 8, TEMPERATURE); // Ch 8: RTD PT-100
161  measure_channel(CHIP_SELECT, 11, TEMPERATURE); // Ch 11: RTD PT-100
162 }
#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__AMERICAN
LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System.
QuikEval EEPROM Library.
#define SENSOR_TYPE__RTD_PT_100
void quikeval_SPI_init(void)
Configure the SPI port for 4Mhz SCK.
Definition: LT_SPI.cpp:151
#define RTD_NUM_WIRES__4_WIRE_KELVIN_RSENSE
LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System.
int8_t discover_demo_board(char *demo_name)
Read the ID string from the EEPROM and determine if the correct board is connected.
#define RTD_RSENSE_CHANNEL__3
#define REJECTION__50_60_HZ
static void print_title()
Prints the title block when program first starts.
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
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_MODE__ROTATION_SHARING
void quikeval_I2C_init(void)
Initializes Linduino I2C port.
Definition: LT_I2C.cpp:394
#define RTD_NUM_WIRES__3_WIRE
#define SENSE_RESISTOR_VALUE_LSB
#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_EXCITATION_CURRENT__250UA