Proj-2014-2015-ESP8266/Scrum

Project Description

Python on ESP8266

User stories

1. Internet of Things conceptors will want to develop with python on the ESP8266, and will want to be able to use every feature of it.

so as to fulfill their needs we have to proceed on these tasks:

• • Manage to connect and flash ESP8266 module from USB connection without third party card
    • Turn USB 5V connection to serial 3.3V
    • Understand procedure for flashing the ESP8266 ROM
  • Understanding the SDK devoted to the ESP8266:
    • Look for code already made and documentation
    • Make test programs
  • Make shedskin able to compile the SDK:
    • Detect conflics
    • Define dependencies between C and C++ modules.
    • Produce a Makefile for the project
  • Produce some packages so as to implement basic functions of the SDK:
    • Make a sample module such as Hello World
    • Make the adequate modules in shedskin to create Python functions for the entire SDK.
  • Generate documentation for the functionnal code
    • Use Sphinx documentation generator

Product Backlog

User Story	Tasks	Priority	Time Allocated
As an Internet of Things conceptor, I want to develop with python on the ESP8266 & I want to be able to use every feature of it.
	Manage to connect and flash ESP8266 module from USB connection without third party card	100	20h
	Understanding the SDK devoted to the ESP8266	50	30h
	Make shedskin able to use the SDK	80	20h
	Produce some packages so as to implement basic functions of the SDK	50	20h
	Generate documentation for the functionnal code	10	5h

Task over when

We have a functionnal prototype

Sprints

Sprint 1

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Sprint duration: 1 mounth

Sprint goals

Manage to connect module from USB connection without third party card

Sprint Backlog

First we followed several tutorials on Arduino based connection:

• First contact with ESP: 10h
• Handling Arduino and dedicated IDE: 8h
• Arduino connection to ESP: 10h

Next we tried several other methods of communication with another board, the STM32F4 Discovery:

• Reading STM documentation: 10h
• Micropython setup on STM: 10h
  • Python self formation: 5h
• Handling nodeMCU: 5h

Then we made a direct link through an usb to serial module:

• Seek help from fablab analysing pin mapping and voltage from a RS232 -> USB converter cable: 3h
  • concluded on the imposibility to use this piece of hardware, providing 5V only

it would kill the ESP.

• Demand and Handling time for an FTDI 3.3V Serial adapter: 1 week delay + 2h
  • works fine, we now have the possibility to connect via serial console.

Writing reports:

• Handle fritzing for schematics: 1h
• Writing: 3h

Sprint 2

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Sprint duration: 2 weeks

Sprint goals

Manage to flash ESP8266 ROM to execute external code

• Handle direct connection
• Select compiling toolchain

Sprint Backlog

Manage to interact with out of the box ESP:

• Look for ESP documentation: 2h
• Use basic wifi function through serial console: 7h

Sprint 3

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Sprint duration: 4

Sprint 4

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Sprint duration: 3