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Initial public release, supported by Atmel Studio version 7.0.607 or later. Download
- Hardware Requirements
- Map The CH341A 16 Pin-Outs to The Attiny 8 Pin-Outs
- Install libusb-1.0
- Build The CH341A Programmer Tool
- Connect The CH341A Connector Pins to The SOIC Test Clip
- Flash The Attiny85 Digistump Board
- Make A Permanent AVR PCI Programmer Rig
- Test The PCB Rig
- Flash An Attiny85 Digistump Using The New PCB
- Make A Unique Connector
An inexpensive CH341A EEPROM/BIOS programmer from AliExpressA SOIC 8-pin test clipA Linux machine running Debian/UbuntuWith an ohmmeter, I mapped the pins with side labels to the socket pins. Now I know which socket pins correspond to the ATTiny function pins (e.g. MOSI, MISO, CS, etc.). Here is my sketch. This jibes with the one schematic I found online for this common-yet-obscure ISP BIOS/EEPROM programmer.
I’m running Linux Mint Bionic (18.04 LTS) which has only libusb 1.0.21. This is insufficient. The programming tool (next section) requires version 1.0.22+ because the API changed slightly. Disco has this version, so here is how I installed it from the Disco repo but stayed on Bionic (credits to George Shuklin).
Trel725 wrote a small programming tool to make the CH341A flash ATtiny chips of all varieties. The only requirement is that libusb 1.0.22+ is installed. Simply clone the repo and run make in Linux. There will be a new file called chavrprog. Make sure it has execute permissions with chmod +x chavrprog. What it does is send bytes to the ATtiny and re...
I just used a breadboard and come colored wires to map the CH341A socket to the SOIC8 test clip given my sketch from above. The colors are mapped to the CH341A as follows: Notice the notch on the ribbon cable when inserting the colored wires into the ribbon cable connector.
The red wire of test clip should line up with the little circle of the ATtiny chip – both denote pin 1. I tried a few times to get the clip to attach perfectly because the pins are so small. Notice the orientation of the Digistump in relation to the red wire of the SOIC8 test clip. I could now flash the t85_default.hex from the micronucleus firmwar...
The ISP programmer came with a little PCB to make custom expansion projects I suppose. I use that to permanently map the CH341A pins to the SOIC8 ribbon cable for use with ATtiny chips. The plan is to use the empty PCB and create a hardware pin map between the CH341A socket and the ribbon cable connecting the SOIC8 test clip to the ATtiny chips. On...
It’s good to test the wiring one more time to check for shorts. All the top pins should map to the top pins of the ATtiny chip and match the function pins on the side of the CH341A.
In the moment of truth, everything works fine. The new PCB is doing its job well and the first ATtiny85 was flashed successfully.
I know me and one day I’ll put the ribbon connector in the wrong way and burnout a chip. I took a pair of pins and trimmed down the leads. Then I put epoxy on the top, let it harden, and inserted it into the empty contacts of the ribbon connector. They are removable, but now the connector has only one way to connect to the modified PCB board for sa...
The thing is my professor said we are going to use Atmel Studio 7 and that is only for windows. Is there a way I can get the same functions on linux? I have already been doing some research and found this old comment on this reddit.
Visit the downloads archive for our AVR and SAM microcontrollers (MCUs) and microprocessors (MPUs).
Microchip Studio, formerly known as Atmel Studio, is a development environment for developing and debugging AVR and SAM MCU applications.
This is a keyboard firmware based on the tmk_keyboard firmware with some useful features for Atmel AVR and ARM controllers, and more specifically, the OLKB product line, the ErgoDox EZ keyboard, and the Clueboard product line.
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Atmel Studio 7 is the integrated development platform (IDP) for developing and debugging all AVR and SAM microcontroller applications. The Atmel Studio 7 IDP gives you a seamless and easy-to-use
