# Chip selection pin D3/pin26
D3 = 26
# Create SPI object
spi = SPI(baudrate=100000,
polarity=1,
phase=0,
sck=Pin(18),
mosi=Pin(23),
miso=Pin(19))
# Set the chip selection pin to output.
cs = Pin(D3, Pin.OUT)
# Create a bmp388 object to communicate with SPI.
bmp388 = bmp388.DFRobot_BMP388_SPI(spi, cs)
time.sleep(0.5)
# You can use an accurate altitude to calibrate sea level air pressure.
# And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude.
# In this case,525.0m is chendu accurate altitude.
seaLevel = bmp388.readSeaLevel(525.0)
print("seaLevel : %s Pa" % seaLevel)
# If there is no need to calibrate altitude, calibrated_altitude = False
calibrated_altitude = True
while 1:
if (calibrated_altitude):
# Read the calibrated altitude
altitude = bmp388.readCalibratedAltitude(seaLevel)
# raspberry bmp388
# CS (15) CSB
# 3.3v(17) VCC
# MOSI(19) SDI
# MISO(21) SDO
# SCLK(23) SCK
# GND (25) GND
import bmp388
import time
# Define chip selection pins
cs = 22
# Create a bmp388 object to communicate with SPI.
bmp388 = bmp388.DFRobot_BMP388_SPI(cs)
time.sleep(0.5)
# You can use an accurate altitude to calibrate sea level air pressure.
# And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude.
# In this case,525.0m is chendu accurate altitude.
seaLevel = bmp388.readSeaLevel(525.0)
print("seaLevel : %s Pa" % seaLevel)
# If there is no need to calibrate altitude, calibrated_altitude = False
calibrated_altitude = True
# Read pressure and count altitude.
while 1:
if (calibrated_altitude):
# Read the calibrated altitude