FB temperature

サンプルコード

# coding: utf-8
import spidev
import time
import sys

# A0コネクタにTemperatureを接続
TEMPPIN = 0

def readadc(channel):
    adc = spi.xfer2([1,(8+channel)<<4,0])
    data = ((adc[1]&3) << 8) + adc[2]
    return data

def arduino_map(x, in_min, in_max, out_min, out_max):
    return (x - in_min) * (out_max - out_min) // (in_max - in_min) + out_min

# 初期化
spi = spidev.SpiDev()
spi.open(0,0)
spi.max_speed_hz = 5000

try:
    while True:
        data = readadc(TEMPPIN)
        volt = arduino_map(data, 0, 1023, 0, 5000)
        temp = arduino_map(volt, 0, 1500, 0, 150)
        sys.stdout.write("\rtemp = %f" % (temp))
        sys.stdout.flush()
        time.sleep( 0.5 )
except KeyboardInterrupt:
    spi.close()
    sys.exit(0)