MicroPython Utility

ESP-01 BMP180

This utility works like a shell interpreter but pastes the content of a script into a MicroPython device on a local UART interface or network address and displays any output from the device.


hg clone http://hg.kewl.org/pub/mpu
cd mpu
sudo make install



Run script directly to interpret code on MicroPython device, else invoke with python in the shell to run locally.

#! /usr/local/bin/mpu /dev/ttyUSB1

# vim: shiftwidth=4 tabstop=4 softtabstop=4 expandtab

for i in range(1, 5):
    print("{} Hello".format(i))
    for i in range(1, 5):
        print("World!", end = ' ')

This is the output from MicroPython or python.

1 Hello
World! World! World! World!
2 Hello
World! World! World! World!
3 Hello
World! World! World! World!
4 Hello
World! World! World! World!

BMP180 attached to ESP8266 as per pictured above.

#! /usr/local/bin/mpu /dev/ttyUSB1

import sys
import time
from machine import Pin, I2C
from ustruct import unpack

bus = I2C(scl=Pin(2), sda=Pin(0), freq=100000)

    chipid = ord(bus.readfrom_mem(119, 0xD0, 1))
    print("BMP180 NOT FOUND")

if (chipid != 0x55):
    print("BMP180 NOT DETECTED")

def read(addr):
    W = bus.readfrom_mem(119, addr, 2)
    W = unpack('>h', W)
    W = W[0]
    return W

AC1 = read(0xAA)
AC2 = read(0xAC)
AC3 = read(0xAE)
AC4 = read(0xB0)
AC5 = read(0xB2)
AC6 = read(0xB4)
B1  = read(0xB6)
B2  = read(0xB8)
MB  = read(0xBA)
MC  = read(0xBC)
MD  = read(0xBE)

bus.writeto_mem(119, 0xF4, bytearray([0x2E]))


UT = read(0xF6)
X1 = ((UT - AC6) * AC5) / 32768
X2 = (MC * 2048) / (X1 + MD)
B5 = X1 + X2
T = ((B5 + 8) / 16) / 10

print ("{} degrees centigrade".format(T))


29.4593 degrees centigrade
This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.More information about cookies