MAX31856-Demo.spin2

{
----------------------------------------------------------------------------------------------------
    Filename:       MAX31856-Demo.spin2
    Description:    MAX31856 driver demo
        * Temperature data output
    Author:         Jesse Burt
    Started:        Nov 21, 2019
    Updated:        Sep 6, 2024
    Copyright (c) 2024 - See end of file for terms of use.
----------------------------------------------------------------------------------------------------
}

#define HAS_THERMCPL
CON

    _clkfreq    = 180_000_000
    _xtlfreq    = 20_000_000


OBJ

    sensor: "sensor.thermocouple.max31856" | CS=0, SCK=1, MOSI=2, MISO=3, SPI_FREQ=5_000_000
    ser:    "com.serial.terminal.ansi" | SER_BAUD=2_000_000


PUB main() | tscl, cj_temp, tc_temp

    setup()

    sensor.temp_scale(sensor.C)                 ' C, F, K
    sensor.tc_type(sensor.TYPE_K)               ' TYPE_B (0), TYPE_E (1), TYPE_J (2), TYPE_K (3)
                                                ' TYPE_N (4), TYPE_R (5), TYPE_S (6), TYPE_T (7)

    sensor.cj_bias(0)                           ' -8_0000..7_9375 (= x.xxxx C)
    sensor.notch_filt_freq(60)                  ' 50, 60 (Hz) mains power frequency
    sensor.opmode(sensor.CONT)

    repeat
        tscl := lookupz(sensor.temp_scale(-2): "C", "F", "K")
        cj_temp := sensor.cj_temp()
        tc_temp := sensor.tc_temp()
        ser.printf(@"Temp (deg %c):\n\r", tscl)

        ' scale the temperature measurements down (from hundredths of a degree) for display:
        ser.printf(@"Cold junction: %3.3d.%02.2d\n\r",  (cj_temp / 100), ...    ' whole
                                                        abs(cj_temp // 100))     ' fractional
        ser.printf(@"Thermocouple: %3.3d.%02.2d\n\r",   (tc_temp / 100), ...
                                                        abs(tc_temp // 100))


PUB setup()

    ser.start()

    ser.clear()
    ser.strln(@"Serial terminal started")

    if ( sensor.start() )
        ser.strln(@"MAX31856 driver started")
    else
        ser.strln(@"MAX31856 driver failed to start - halting")
        repeat


DAT
{
Copyright 2024 Jesse Burt

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
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furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
}