![Attiny85 digispark reprogramming](https://kumkoniak.com/82.jpg)
![attiny85 digispark reprogramming attiny85 digispark reprogramming](http://xamuv.weebly.com/uploads/1/2/6/7/126794186/912942359_orig.jpg)
- ATTINY85 DIGISPARK REPROGRAMMING SERIAL
- ATTINY85 DIGISPARK REPROGRAMMING DRIVER
- ATTINY85 DIGISPARK REPROGRAMMING FULL
- ATTINY85 DIGISPARK REPROGRAMMING PRO
- ATTINY85 DIGISPARK REPROGRAMMING SOFTWARE
It’s great that people who can’t afford regular brand name boards have access to cheap hardware.īut when talking about cheap Chinese clones, it’d be really nice if you could at least recognize those crazy cheap products only exist because plenty of people bought brand name Arduino boards.
ATTINY85 DIGISPARK REPROGRAMMING DRIVER
We will of course be open sourcing all of our code and the CDC code and driver should be easily applicable to any AVR V-USB project.
ATTINY85 DIGISPARK REPROGRAMMING SERIAL
The only modern (or semi-modern) OS that doesn’t like our V-USB CDC Serial implementation is windows – and that can be solved by a driver (and hey nearly everything in windows needs one!) – and to ensure it is easy for windows users we are making sure the driver is fully signed so it installs easily on anything from XP to 8.1 and everything in between. So doing it with V-USB allowed us to give people that option, but also still allow them to emulate other USB devices (keyboards, mice, joysticks, midi, etc) – of course we also could have taken the 32u4 route – but the Teensy 2 has that covered, and I like to make new stuff, rather than clones of already great products. I’ve found generally, the reasons people wanted CDC Serial on the Digispark didn’t call for high speed usage at all – mostly serial debugging and simple communications. There are certainly some tradeoffs to serial using V-USB – it can never have the performance of a real hardware implementation and like most V-USB stuff it isn’t quite spec, but it is pretty awesome and far more versatile than using a UartUSB chip.
![attiny85 digispark reprogramming attiny85 digispark reprogramming](https://robosap.in/wp-content/uploads/2019/09/digiig3-1.png)
Paul – I have my new teensy 3 sitting right here – as always, you’ve done some great work on that! Assuming CDC serial really works, it’ll be interesting to try running this on the Digispark Pro. On the matter of performance, here’s a simple benchmark I published several months ago.
ATTINY85 DIGISPARK REPROGRAMMING SOFTWARE
Of course you’d expect hardware-based USB to outperform software emulated USB. Teensy 2.0, and Arduino Leonado and every other board based on ATMEGA32U4, have USB implemented in hardware.
ATTINY85 DIGISPARK REPROGRAMMING FULL
Of course, comparison to Teensy isn’t really fair on a technical level (I’m the creator of Teensy, for full disclosure). I haven’t personally investigated this, but I do try to pay attention to USB stuff, especially when people discover the limits and specific issues with each operating system. I’ve read that many operating systems allowed this anyway, but I also saw somewhere than some newer versions of Windows started to enforce this rule and refused to enumerate such devices.
![attiny85 digispark reprogramming attiny85 digispark reprogramming](https://i.pinimg.com/originals/09/2e/df/092edfa265588247353997c943c54096.png)
Using bulk and isync are forbidden by the USB spec. The other issue with bulk endpoints is the USB spec only allows control and interrupt types on low speed devices. I’m not doubting someone’s found a clever solution… I’m really interested to see how they’ve solved this. Previously when people have tried bulk endpoints, the rapid pace of IN tokens has consumed most of the CPU time. For IN direction (device to PC) bulk endpoint, the USB host controller chip polls the USB device pretty rapidly with IN tokens. Normally bigbang USB implements only control and interrupt mode endpoints.
![attiny85 digispark reprogramming attiny85 digispark reprogramming](https://www.gme.cz/data/product/1024_1024/pctdetail.775-056.2.jpg)
The bulk endpoints used by CDC are a special challenge. I know the technique has been around for many years, but still, it’s pretty amazing. I’m always amazed by bitbang USB implementations like V-USB. Posted in ATtiny Hacks, Crowd Funding Tagged ATtiny167, attiny85, Digispark Post navigation
ATTINY85 DIGISPARK REPROGRAMMING PRO
Without the shields, the Digi Pro is cheap, and only $2 more per board than the original Digispark. There are also a few more shields this time around, with WiFi and Bluetooth shields available as additional rewards. There’s real USB programming, device emulation, and serial over USB this time, and the ability to use the Arduino serial monitor, something not found in the original Digispark. This larger, 20-pin chip adds 10 more I/O pins, and a real hardware SPI interface, but the best features come with the Digispark Pro package. The new board isn’t based on the ‘tiny85, but rather the ATtiny167. The Digispark was among the first of these small boards, and now the creator is releasing a newer, bigger version dubbed the Digispark Pro. This small 8-pin microcontroller is able to run most Arduino sketches, and the small size and low price of these dev boards means they have been extremely popular. There has recently been a huge influx of extremely small dev board based on the ATtiny85.
![Attiny85 digispark reprogramming](https://kumkoniak.com/82.jpg)