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4. Embedded Programming

link to group site

Assignment

  • Group assignment:

  • Demonstrate and compare the toolchains and development workflows for available embedded architectures

  • Document your work to the group work page and reflect on your individual page what you learned

  • Individual assignment:

  • Browse through the datasheet for your microcontroller

  • Write a program for a microcontroller, and simulate its operation, to interact (with local input &/or output devices) and communicate (with remote wired or wireless connection)

Research

In this week assignment i started the research by looking at the ATTiny 412 and how to procram and simulate little circuit with it. I did research on how to program ATtiny with arduino IDE using C++ language. I also did try to find out what kind of assignment you can use ATtiny for.

Then i studydatasheet for XIAO RP2040 trying to figure out what is it strength and weekness. I will document the outcome further on this site.

Studying datasheet for RP-2040

I found the datasheet here, then the seeed studio page leed me to this wiki studio page that wiki page is very good to learn about there products.

I made an comparision table for RP2040 and ESP32-C3 from informasion i fond on the Seeed studio wiki page

Item Seeed studio XIAO-RP2040 Seeed studio XIAO ESP32C3
processor RP2040 Daul-core M0+@133Mhz ESP32-C3 32-bit RISC-V@160Mhz
Wireless Connectivity N/A WiFi and Bluetooth 5(le)
Memory 264KB SRAM, 2MB onboard Flash 400KB SRAM, 4MB onboard Flash
Built-in Sensors N/A N/A
Interfaces 12C/UART/SPI 12C/UART/SPI/125
PWM/Analog Pins 11/4 11/4
Onboard Buttons Reset/Boot Button Reset/Boot Button
Onboard LEDs Full-color RGB/ 3-in-one Charge LED
Battery Charge Chip N/A Built-in
Programing Languages Arduino/ MicroPython/ CircuitPython Arduino
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Programming ATtiny412 with Arduino IDE

What You Need:

  • ATtiny412 microcontroller
  • UPDI programmer (or an Arduino acting as a UPDI programmer)
  • Arduino IDE (latest version)
  • Serial UDPI cable
  • Serial UDPI 3 pin Addapter

Step 1: Set Up Support for ATtiny 1-Series in Arduino IDE

  1. Open the Arduino IDE.
  2. Go to File > Preferences.

  3. In the “Additional Boards Manager URLs” field, add the following URL: Json file for arduino

  4. Click OK to save.

  5. Go to Tools > Board > Boards Manager.
  6. Search for megaTinyCore and install it. This core supports ATtiny 0/1-series chips, including the ATtiny412.

Step 2: Setting Up the UPDI Programmer

The ATtiny412 uses the UPDI (Unified Program and Debug Interface) for programming. You have two options:

Option 1: Use an External UPDI Programmer

If you have a dedicated UPDI programmer (e.g., a USB UPDI programmer), connect it to the ATtiny412 as follows: - UPDI connection: Connect the UPDI pin of the programmer to Pin 2 (UPDI) on the ATtiny412. - Connect VCC and GND from the programmer to the VCC and GND pins of the ATtiny412.

Option 2: Use an Arduino as the UPDI Programmer

If you don’t have a dedicated UPDI programmer, you can use an Arduino.

i am going to use Arduino to do this you need to set the progaramer in arduion ide as shown on picture below

Then connect the Attiny baord to the computer whit udpi cord and the adapter.

On this picture we see the udpi cord and the adapter that we use to connet the board to the computer. then we just hit compile and upload button in arduino and the program will go on to the ATtiny and thats all wee need to do

what did i learn from this is that i already knew how to programm things whit arduino but i had never try other methods like using VScode to progranm RP2040 or thonny to program things so i learn to use those tools and how they differ from each other

simulating

I am going to use wokwi and arduino to simulate simply circut of button that wil turn on and off a led diode.

First thing to do is going to Wokwi and sett up the circut

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Then i have to open wokwi and choice some board that i am going tuo use, i choice Arduino uno that is the bord on the picture to the right here above.

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then i have to find the componentes that i am going to use that is: - - LED - Resistor 330ohm - Resistor 1kohm - Button That 1K resistor is for connecting the pullup function on the button i later found out that the circut also worked whit out the 1Kohm resistor

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Here we have picturee of the circut connected and programmed on the picture to the rigt we then see ligth showing the circut is working here is the program file

And the finally some video showing it´s all working great