kiln-controller-max31856/test-thermocouple.py

50 wiersze
1.4 KiB
Python
Executable File

#!/usr/bin/env python
import config
import adafruit_max31855
from digitalio import DigitalInOut
import time
import datetime
import busio
try:
import board
except NotImplementedError:
print("not running on Raspberry PI, assuming simulation")
########################################################################
#
# To test your thermocouple...
#
# Edit config.py and set the following in that file to match your
# hardware setup: SPI_SCLK, SPI_MOSI, SPI_MISO, SPI_CS
#
# then run this script...
#
# ./test-thermocouple.py
#
# It will output a temperature in degrees every second. Touch your
# thermocouple to heat it up and make sure the value changes. Accuracy
# of my thermocouple is .25C.
########################################################################
spi = busio.SPI(config.spi_sclk, config.spi_mosi, config.spi_miso)
cs = DigitalInOut(config.spi_cs)
sensor = adafruit_max31855.MAX31855(spi, cs)
print("\nboard: %s" % (board.board_id))
print("SPI configured as:\n")
print(" config.spi_sclk = %s BCM pin" % (config.spi_sclk))
print(" config.spi_mosi = %s BCM pin" % (config.spi_mosi))
print(" config.spi_miso = %s BCM pin" % (config.spi_miso))
print(" config.spi_cs = %s BCM pin\n" % (config.spi_cs))
while(True):
time.sleep(1)
temp = sensor.temperature
scale = "C"
if config.temp_scale == "f":
temp = temp * (9/5) + 32
scale ="F"
print("%s %0.2f%s" %(datetime.datetime.now(),temp,scale))