Either disconnect VCC between the two boards or disconnect the power supply from the target board (5V from the Mega should be plenty to power your target board which only has like the MCU and 3 other chips…) double check that you’re NOT feeding 5V from the Arduino Mega into the target board when the target board is connected to its power supply at the same time! You’ll have two power supplies fighting each other and there’ll be a current between them.If it’s not, then the programmer can impossibly reset the chip, and then you need to make direct connection to that pins, somehow, either by soldering it or tapping that pin with the needed wire double check with a multimeter that the reset pin of the ISP header goes through to the actual reset pin of the ATMega644.Longer answer: Yes absolutely because the capacitor suppresses a voltage drop of the RESET line from high to low when programmer tool initializes the device and does an eventual auto-reset, like said. Just glossed over it, maybe you can extract some more information from this and try a few different things. RESET RESET or SS RESET with caps and not. There are different wireups in there, e.g. The RESET button is an input connected to nothing else (if you don’t press the button) so nothing bad should happen.Įdit: Also, the page should be the main source of information for the wireup. You can check whether it makes a difference if you connect the the SS pin of the Mega to the bottem left pin of the reset button (in regards to the above posted picture) (or touch it while programming with a male-male cable). Am I blind or does the bottom right pin of the ISP header, which is supposed to be RESET, go nowhere, just between the two headers themselves, but not to the actual RESET pin of the chip, which is just connected to one pin of the button? Hardware error? The SPI SlaveSelect (SS) line must definitely go the RESET of the target. The picture is cutoff at the left so I can’t see if you have a capacitor installed between RST and VCC, further the breadboard at the bottom is cut off.Ī thing I find weird in the target board is the RESET line. The terminal process “C:\Users\HP Gaming atformio\penv\Scripts\pio.exe ‘run’, ‘–target’, ‘upload’” terminated with exit code: 1. Reading | # | 100% 0.02sĪvrdude: Yikes! Invalid device signature.ĭouble check connections and try again, or use -F to override pio\build\ATmega644\firmware.hexĪvrdude: AVR device initialized and ready to accept instructions pio\build\ATmega644\firmware.elfĪdvanced Memory Usage is available via “PlatformIO Home > Project Inspect” LDF Modes: Finder ~ chain, Compatibility ~ softĬhecking size. LDF: Library Dependency Finder → Library Dependency Finder (LDF) - PlatformIO latest documentation HARDWARE: ATMEGA644 8MHz, 4KB RAM, 63KB FlashĭEBUG: Current (simavr) On-board (simavr) now we have an Invalid device Signature ErrorĮxecuting task in folder BlinkyTest: C:\Users\HP Gaming atformio\penv\Scripts\pio.exe run -target upload Sanguino ATmega644 or ATmega644A (8 MHz) I’m afraid I do have a space in the username.Īdding the quotation marks worked. To PlatformIO it doesn’t matter whether you flash an Arduino Mega or Arduino Uno or Arduino whatever with the Arduino as ISP firmware (you also don’t reference a “Arduino Mega” in the platformio.ini), it just has the commands to interact with a STK500V1 style programmer that is implemented by the board when it’s running the Arduino as ISP sketch. Where you must replace SERIAL_PORT_HERE with the serial port that your Arduino Mega “Arduino as ISP” device is connected to, e.g. Upload_command = avrdude $UPLOAD_FLAGS -U flash:w:$SOURCE:i use "tool-avrdude-megaavr" for the atmelmegaavr platform Which one is it?Īssuming you want to flash a ATMega644A, your platformio.ini should look something like this There are Atmel ATMega644P/PA and Atmel ATMega644A chips.
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