| Linduino 1.3.0 Linear Technology Arduino-Compatible Demonstration Board

2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino
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1 /*!
2 LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System
3 @verbatim
4
5 DC2211_THERMOCOUPLE.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
74 #include "configuration_constants_LTC2983.h"
75 #include "support_functions_LTC2983.h"
76 #include "table_coeffs_LTC2983.h"
77
78 #define CHIP_SELECT QUIKEVAL_CS // Chip select pin
79
80 // Function prototypes
81 void configure_channels();
82 void configure_global_parameters();
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
98 configure_channels();
99 configure_global_parameters();
100 }
101
102
103 void configure_channels()
104 {
105 uint8_t channel_number;
106 uint32_t channel_assignment_data;
107
108 // ----- Channel 2: Assign Type J Thermocouple -----
109 channel_assignment_data =
110 SENSOR_TYPE__TYPE_J_THERMOCOUPLE |
111 TC_COLD_JUNCTION_CH__6 |
112 TC_SINGLE_ENDED |
113 TC_OPEN_CKT_DETECT__YES |
114 TC_OPEN_CKT_DETECT_CURRENT__10UA;
115 assign_channel(CHIP_SELECT, 2, channel_assignment_data);
116 // ----- Channel 3: Assign Type K Thermocouple -----
117 channel_assignment_data =
118 SENSOR_TYPE__TYPE_K_THERMOCOUPLE |
119 TC_COLD_JUNCTION_CH__6 |
120 TC_SINGLE_ENDED |
121 TC_OPEN_CKT_DETECT__YES |
122 TC_OPEN_CKT_DETECT_CURRENT__10UA;
123 assign_channel(CHIP_SELECT, 3, channel_assignment_data);
124 // ----- Channel 4: Assign Type E Thermocouple -----
125 channel_assignment_data =
126 SENSOR_TYPE__TYPE_E_THERMOCOUPLE |
127 TC_COLD_JUNCTION_CH__6 |
128 TC_SINGLE_ENDED |
129 TC_OPEN_CKT_DETECT__YES |
130 TC_OPEN_CKT_DETECT_CURRENT__10UA;
131 assign_channel(CHIP_SELECT, 4, channel_assignment_data);
132 // ----- Channel 5: Assign Type N Thermocouple -----
133 channel_assignment_data =
134 SENSOR_TYPE__TYPE_N_THERMOCOUPLE |
135 TC_COLD_JUNCTION_CH__6 |
136 TC_SINGLE_ENDED |
137 TC_OPEN_CKT_DETECT__YES |
138 TC_OPEN_CKT_DETECT_CURRENT__10UA;
139 assign_channel(CHIP_SELECT, 5, channel_assignment_data);
140 // ----- Channel 6: Assign Off-Chip Diode -----
141 channel_assignment_data =
142 SENSOR_TYPE__OFF_CHIP_DIODE |
143 DIODE_SINGLE_ENDED |
144 DIODE_NUM_READINGS__3 |
145 DIODE_AVERAGING_ON |
146 DIODE_CURRENT__20UA_80UA_160UA |
147 (uint32_t) 0x100C49 << DIODE_IDEALITY_FACTOR_LSB; // diode - ideality factor(eta): 1.00299930572509765625
148 assign_channel(CHIP_SELECT, 6, channel_assignment_data);
149
150 }
151
152
153
154
155 void configure_global_parameters()
156 {
157 // -- Set global parameters
158 transfer_byte(CHIP_SELECT, WRITE_TO_RAM, 0xF0, TEMP_UNIT__C |
159 REJECTION__50_60_HZ);
160 // -- Set any extra delay between conversions (in this case, 0*100us)
161 transfer_byte(CHIP_SELECT, WRITE_TO_RAM, 0xFF, 0);
162 }
163
164 // -------------- Run the LTC2983 -------------------------------------
165
166 void loop()
167 {
168 measure_channel(CHIP_SELECT, 2, TEMPERATURE); // Ch 2: Type J Thermocouple
169 measure_channel(CHIP_SELECT, 3, TEMPERATURE); // Ch 3: Type K Thermocouple
170 measure_channel(CHIP_SELECT, 4, TEMPERATURE); // Ch 4: Type E Thermocouple
171 measure_channel(CHIP_SELECT, 5, TEMPERATURE); // Ch 5: Type N Thermocouple
172 measure_channel(CHIP_SELECT, 6, TEMPERATURE); // Ch 6: Off-Chip Diode
173 }
WRITE_TO_RAM
#define WRITE_TO_RAM
Definition: configuration_constants_LTC2983.h:326
SENSOR_TYPE__TYPE_K_THERMOCOUPLE
#define SENSOR_TYPE__TYPE_K_THERMOCOUPLE
Definition: configuration_constants_LTC2983.h:89
CHIP_SELECT
#define CHIP_SELECT
Definition: 2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino:78
TEMPERATURE
#define TEMPERATURE
SENSOR_TYPE__TYPE_E_THERMOCOUPLE
#define SENSOR_TYPE__TYPE_E_THERMOCOUPLE
Definition: configuration_constants_LTC2983.h:90
assign_channel
void assign_channel(uint8_t chip_select, uint8_t channel_number, uint32_t channel_assignment_data)
Definition: support_functions_LTC2983.cpp:90
loop
static void loop()
Definition: 2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino:166
TC_OPEN_CKT_DETECT__YES
#define TC_OPEN_CKT_DETECT__YES
Definition: configuration_constants_LTC2983.h:260
Linduino.h
Header File for Linduino Libraries and Demo Code.
TC_COLD_JUNCTION_CH__6
#define TC_COLD_JUNCTION_CH__6
Definition: configuration_constants_LTC2983.h:238
DIODE_NUM_READINGS__3
#define DIODE_NUM_READINGS__3
Definition: configuration_constants_LTC2983.h:283
configure_global_parameters
static void configure_global_parameters()
Definition: 2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino:155
setup
static void setup()
Definition: 2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino:86
TC_SINGLE_ENDED
#define TC_SINGLE_ENDED
Definition: configuration_constants_LTC2983.h:256
SENSOR_TYPE__OFF_CHIP_DIODE
#define SENSOR_TYPE__OFF_CHIP_DIODE
Definition: configuration_constants_LTC2983.h:98
configuration_constants_LTC2983.h
LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System.
table_coeffs_LTC2983.h
QuikEval_EEPROM.h
QuikEval EEPROM Library.
DIODE_CURRENT__20UA_80UA_160UA
#define DIODE_CURRENT__20UA_80UA_160UA
Definition: configuration_constants_LTC2983.h:291
quikeval_SPI_init
void quikeval_SPI_init(void)
Configure the SPI port for 4Mhz SCK.
Definition: LT_SPI.cpp:151
support_functions_LTC2983.h
LTC2983: Multi-Sensor High Accuracy Digital Temperature Measurement System.
discover_demo_board
int8_t discover_demo_board(char *demo_name)
Read the ID string from the EEPROM and determine if the correct board is connected.
Definition: QuikEval_EEPROM.cpp:141
REJECTION__50_60_HZ
#define REJECTION__50_60_HZ
Definition: configuration_constants_LTC2983.h:299
print_title
static void print_title()
Prints the title block when program first starts.
Definition: _24xx_iso_spi_delay.ino:171
configure_channels
static void configure_channels()
Definition: 2983/DC2211_THERMOCOUPLE/DC2211_THERMOCOUPLE.ino:103
LT_SPI.h
LT_SPI: Routines to communicate with ATmega328P&#39;s hardware SPI port.
measure_channel
void measure_channel(uint8_t chip_select, uint8_t channel_number, uint8_t channel_output)
Definition: support_functions_LTC2983.cpp:152
DIODE_SINGLE_ENDED
#define DIODE_SINGLE_ENDED
Definition: configuration_constants_LTC2983.h:279
DIODE_AVERAGING_ON
#define DIODE_AVERAGING_ON
Definition: configuration_constants_LTC2983.h:287
LT_I2C.h
LT_I2C: Routines to communicate with ATmega328P&#39;s hardware I2C port.
SENSOR_TYPE__TYPE_J_THERMOCOUPLE
#define SENSOR_TYPE__TYPE_J_THERMOCOUPLE
Definition: configuration_constants_LTC2983.h:88
demo_name
char demo_name[]
Demo Board Name stored in QuikEval EEPROM.
Definition: DC1880A.ino:97
quikeval_SPI_connect
void quikeval_SPI_connect()
Connect SPI pins to QuikEval connector through the Linduino MUX. This will disconnect I2C...
Definition: LT_SPI.cpp:138
UserInterface.h
TC_OPEN_CKT_DETECT_CURRENT__10UA
#define TC_OPEN_CKT_DETECT_CURRENT__10UA
Definition: configuration_constants_LTC2983.h:263
DIODE_IDEALITY_FACTOR_LSB
#define DIODE_IDEALITY_FACTOR_LSB
Definition: configuration_constants_LTC2983.h:295
quikeval_I2C_init
void quikeval_I2C_init(void)
Initializes Linduino I2C port.
Definition: LT_I2C.cpp:394
SENSOR_TYPE__TYPE_N_THERMOCOUPLE
#define SENSOR_TYPE__TYPE_N_THERMOCOUPLE
Definition: configuration_constants_LTC2983.h:91
TEMP_UNIT__C
#define TEMP_UNIT__C
Definition: configuration_constants_LTC2983.h:302
transfer_byte
uint8_t transfer_byte(uint8_t chip_select, uint8_t ram_read_or_write, uint16_t start_address, uint8_t input_data)
Definition: support_functions_LTC2983.cpp:308