| /** | |
| * Marlin 3D Printer Firmware | |
| * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] | |
| * | |
| * Based on Sprinter and grbl. | |
| * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm | |
| * | |
| * This program is free software: you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License as published by | |
| * the Free Software Foundation, either version 3 of the License, or |
You can locally pull data from your Rainforest Eagle-200 using cURL.
Rainforest has published a local API document which explains the details of the protocol. But this particular document is about quickly getting to the point and giving you some cURL commands you can use to immediately start pulling out data.
First, I'll assume that you have the following environment variables set:
| #!/usr/bin/env python2 | |
| import argparse | |
| import locale | |
| import logging | |
| import time | |
| import threading | |
| import json | |
| import requests | |
| import datetime |
| from machine import Pin, I2C | |
| from ina219 import INA219 | |
| from logging import INFO | |
| SHUNT_OHMS = 0.1 | |
| i2c = I2C(-1, Pin(5), Pin(4)) | |
| ina = INA219(SHUNT_OHMS, i2c, log_level=INFO) | |
| ina.configure() |
On the NodeMCU clone I used to test with I got an out of memory error when trying to import the ina219 module, this is due to there being insufficient RAM to compile this module to byte code. If you encounter this issue then you can use the frozen byte code as explained below.
This is an example script:
from machine import Pin, I2C
This MicroPython library for the INA219 voltage, current and power monitor sensor from Texas Instruments. The intent of the library is to make it easy to use the quite complex functionality of this sensor.
The functionality is currently under development and is based on my INA219 library for the Raspberry Pi.
The library currently only supports continuous reads of voltage and
| """Example script. | |
| Edit the I2C interface constant to match the one you have | |
| connected the sensor to. | |
| """ | |
| from ina219 import INA219 | |
| from machine import I2C | |
| # Edit to match interface the sensor is connect to (1 or 2). |
| """Example script. | |
| Edit the I2C interface constant to match the one you have | |
| connected the sensor to. | |
| """ | |
| from ina219 import INA219 | |
| from machine import I2C | |
| # Edit to match interface the sensor is connect to (1 or 2). |
| """MicroPython library for the INA219 sensor. | |
| This library supports the INA219 sensor from Texas Instruments with | |
| MicroPython using the I2C bus. | |
| """ | |
| import logging | |
| import utime | |
| from math import trunc | |
| from micropython import const |
| """ | |
| This is a MicroPython driver for the SSD1306 OLED display. | |
| The driver implements both the I2C and SPI interfaces, as the SSD1306 is available with either interface. | |
| """ | |
| # MicroPython SSD1306 OLED driver, I2C and SPI interfaces | |
| from micropython import const | |
| import time |