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9SQ/raspi_lps25h.py

Created May 1, 2015 09:40
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Raspberry PiとLPS25Hで気圧取得
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raspi_lps25h.py
import sys
import wiringpi2
from time import sleep
wiringpi2.wiringPiSetup()
i2c = wiringpi2.I2C()
lps25h = i2c.setup(0x5C)
whoami = i2c.readReg8(lps25h,0x0F)
if whoami != 0xBD:
print "error"
sys.exit(1)
i2c.writeReg8(lps25h,0x20,0x90)
sleep(1)
ppxl = i2c.readReg8(lps25h,0x28)
pol = i2c.readReg8(lps25h,0x29)
poh = i2c.readReg8(lps25h,0x2A)
counts = poh << 16 | pol << 8 | ppxl
print "Pressure %.2f" % (counts/4096.0)
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