Programando o ESP8266 com Python
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The document discusses programming the ESP8266 microcontroller using MicroPython, a lightweight implementation of Python 3 for constrained environments. It outlines the specifications of the ESP8266 and MicroPython, key libraries, and provides example code for functionalities like pin control and sensor monitoring. Additionally, it includes links to resources, tools for flashing firmware, and a call for questions and engagement.
Programando o ESP8266 com Python
- 1. Globalcode – Open4education Trilha – Arduino e Makers Relsi Maron Programando o ESP8266 com Python
- 2. Globalcode – Open4education Quem? - Programador - 7 Anos no teclado - 3 Anos num relacionamento sério com Python - http://github.com/relsi - http://pt.slideshare.net/relsi - http://linkedin.com/in/relsi - http://ikebanacw.com
- 3. Globalcode – Open4education Para quem?
- 4. Globalcode – Open4education Por que Python?
- 5. Globalcode – Open4education Por que Python?
- 6. Globalcode – Open4education Por que Python?
- 7. Globalcode – Open4education Por que Python? Bonito é melhor que feio. Explícito é melhor que implícito. Simples é melhor que complexo. Complexo é melhor que complicado. Linear é melhor do que aninhado. Esparso é melhor que denso. Legibilidade conta. Casos especiais não são especiais o bastante para quebrar as regras. Ainda que praticidade vença a pureza. Erros nunca devem passar silenciosamente. A menos que sejam explicitamente silenciados. Diante da ambigüidade, recuse a tentação de adivinhar. Deveria haver um — e preferencialmente só um — modo óbvio para fazer algo. Embora esse modo possa não ser óbvio a princípio a menos que você seja holandês. Agora é melhor que nunca. Embora nunca freqüentemente seja melhor que *já*. Se a implementação é difícil de explicar, é uma má idéia. Se a implementação é fácil de explicar, pode ser uma boa idéia. Namespaces são uma grande idéia — vamos ter mais dessas!
- 8. Globalcode – Open4education Por que Python?
- 9. Globalcode – Open4education Por que Python?
- 10. Globalcode – Open4education Por que Python? - Linguagem de altíssimo nível (VHLL) - Criada por Guido van Rossum em 1991 - Interpretada e interativa - Multiplataforma - Multipropósito - Muito Foda
- 11. Globalcode – Open4education ESP8266 - 32-bit RISC CPU 80 MHz - 64 KiB RAM, 96 KiB of data RAM - External QSPI flash - 512 KiB to 4 MiB - IEEE 802.11 b/g/n Wi-Fi - WEP/WPA/WPA2 - 16 GPIO pins - SPI, I²C, - UART
- 13. Globalcode – Open4education Por que ESP8266?
- 14. Globalcode – Open4education Por que ESP8266?
- 15. Globalcode – Open4education Por que ESP8266?
- 16. Globalcode – Open4education Porque roda Python! =D
- 17. Globalcode – Open4education Micropython MicroPython is a lean and efficient implementation of the Python 3 programming language that includes a small subset of the Python standard library and is optimised to run on microcontrollers and in constrained environments. http://www.micropython.org/
- 18. Globalcode – Open4education MicroPython - STM32F405RG microcontroller - 168 MHz Cortex M4 CPU - 1024KiB flash ROM and 192KiB RAM - Micro USB connector - Micro SD card slot - 3-axis accelerometer (MMA7660) - Real time clock with optional battery backup - 24 GPIO on left and right edges - 5 GPIO on bottom row - 3x 12-bit analog to digital converters - 2x 12-bit digital to analog (DAC) converters - 4 LEDs (red, green, yellow and blue) - 1 reset and 1 user switch - On-board 3.3V LDO voltage regulator, capable of supplying up to 250mA, input voltage range 3.6V to 16V - DFU bootloader in ROM
- 19. Globalcode – Open4education - array – arrays of numeric data - Builtin Functions - gc – control the garbage collector - math – mathematical functions - sys – system specific functions - ubinascii – binary/ASCII conversions - ucollections – collection and container types - uhashlib – hashing algorithm - uheapq – heap queue algorithm - uio – input/output streams - ujson – JSON encoding and decoding - uos – basic “operating system” services - ure – regular expressions - usocket – socket module - ussl – ssl module - ustruct – pack and unpack primitive data types - utime – time related functions - uzlib – zlib decompression MicroPython Standard libraries https://goo.gl/w1Q3Yy
- 20. Globalcode – Open4education - machine — functions related to the board - micropython – access and control MicroPython internals - network — network configuration - uctypes – access binary data in a structured way - esp — functions related to the ESP8266 MicroPython Specific libraries https://goo.gl/w1Q3Yy
- 21. Globalcode – Open4education import machine machine.freq() # get the current frequency of the CPU machine.freq(160000000) # set the CPU frequency to 160 MHz MicroPython Módulo machine https://goo.gl/8hCppg
- 22. Globalcode – Open4education from machine import Pin p0 = Pin(0, Pin.OUT) # create output pin on GPIO0 p0.high() # set pin to high p0.low() # set pin to low p0.value(1) # set pin to high p2 = Pin(2, Pin.IN) # create input pin on GPIO2 print(p2.value()) # get value, 0 or 1 p4 = Pin(4, Pin.IN, Pin.PULL_UP) # enable internal pull-up resistor p5 = Pin(5, Pin.OUT, value = 1) # set pin high on creation MicroPython Módulo machine https://goo.gl/8hCppg
- 23. Globalcode – Open4education import network wlan = network.WLAN(network.STA_IF) # create station interface wlan.active(True) # activate the interface wlan.scan() # scan for access points wlan.isconnected() # check if the station is connected to an AP wlan.connect('essid', 'password') # connect to an AP wlan.config('mac') # get MAC adddress wlan.ifconfig() # get the interface's #IP/netmask/gw/DNS MicroPython Módulo network https://goo.gl/8hCppg
- 24. Globalcode – Open4education import network ap = network.WLAN(network.AP_IF) # create access-point interface ap.active(True) # activate the interface ap.config(essid='ESP-AP') # set the ESSID of the access point MicroPython Módulo network https://goo.gl/8hCppg
- 25. Globalcode – Open4education ESP8266 + MicroPython Preparando o Terreno
- 26. Globalcode – Open4education ESP8266 + MicroPython
- 27. Globalcode – Open4education ESP8266 + MicroPython
- 28. Globalcode – Open4education ESP8266 + MicroPython http://pedrominatel.com.br/arduino/utilizando-o-arduino-para-programar-o-esp/
- 29. Globalcode – Open4education ESP8266 + MicroPython https://goo.gl/FtgaJ7
- 30. Globalcode – Open4education ESP8266 + MicroPython Gravando o firmware
- 31. Globalcode – Open4education ESP8266 + MicroPython Gravando o firmware Verificar a porta do dispositivo $ lsusb Bus 001 Device 006: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART... $ dmesg | grep USB usb 1-1: cp210x converter now attached to ttyUSB0 Instalar o esptool $ pip install esptool Ou $ git clone https://github.com/themadinventor/esptool.git Python 2.7
- 32. Globalcode – Open4education ESP8266 + MicroPython Gravando o firmware Apagar o firmware atual $ esptool.py --port /dev/ttyUSB0 erase_flash esptool.py v1.1 Connecting... Erasing flash (this may take a while)... $ esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size=8m -fm dio 0 esp8266-20160909-v1.8.4.bin Connecting... Running Cesanta flasher stub... Flash params set to 0x0220 Writing 565248 @ 0x0... 565248 (100 %) Wrote 565248 bytes at 0x0 in 12.7 seconds (357.1 kbit/s)... Leaving...
- 33. Globalcode – Open4education ESP8266 + MicroPython Acessando
- 34. Globalcode – Open4education https://github.com/micropython/webrepl ESP8266 + MicroPython Acessando
- 35. Globalcode – Open4education ESP8266 + MicroPython Acessando
- 36. Globalcode – Open4education ESP8266 + MicroPython Acessando
- 37. Globalcode – Open4education ESP8266 + MicroPython Acessando http://esp8266.ru/esplorer/
- 38. Globalcode – Open4education ESP8266 + MicroPython Hello World def blink(): import time import machine pin = machine.Pin(5, machine.Pin.OUT) while True: pin.high() time.sleep(1) pin.low() time.sleep(1)
- 39. Globalcode – Open4education ESP8266 + MicroPython Controlando def lampada(estado): import machine pin = machine.Pin(5, machine.Pin.OUT) if estado == 1: pin.high() elif estado == 0: pin.low()
- 40. Globalcode – Open4education ESP8266 + MicroPython Monitorando def medida(tipo): import dht import machine d = dht.DHT11(machine.Pin(4)) d.measure() if tipo == 't': r = d.temperature() print(str(r) + ' °C') elif tipo == 'h': r = d.humidity() print(str(r) + ' %RH')
- 42. Globalcode – Open4education Perguntas? Obrigado pela atenção! :) - http://github.com/relsi - http://pt.slideshare.net/relsi - http://linkedin.com/in/relsi - http://ikebanacw.com