I'm currently facing challenges while attempting to upload a sketch to a Mega2560 IC. I've tried a couple of methods, but unfortunately, none have yielded the expected results. I'm seeking guidance to understand where I might be going wrong.
Methods I've Tried:
Initially, I followed the procedure of uploading the ARDUINO ISP sketch to an Arduino Uno, which was successful. Then, I connected the required points on the ICSP of my Mega2560 and adjusted the bootloader fuses from D8 to D9. I set the programmer to "Arduino As ISP," chose the board as "Mega 2560," and proceeded to burn the bootloader. Subsequently, I attempted to upload the Blink program using the programmer. My expectation was that the Blink program would run as intended. However, this process resulted in corruption of my Arduino, which was unexpected.
To address the corruption issue, I decided to use a USBasp programmer. I selected the USBasp programmer and set the board to "Mega2560" using the Arduino IDE. Successfully burning the bootloader was a positive outcome. However, when I attempted to upload the Blink sketch using the programmer, the expected result of the Blink program running did not occur.
Current Issue:
After trying the methods mentioned above, I observed that whenever I attempt to upload a sketch, the device signature consistently changes. This behavior persists regardless of the method used.
My goal is to successfully upload the Blink sketch (or any other program) to the Mega2560 IC and have it run without any corruption or device signature changes. I'm reaching out to the community to seek assistance in understanding where I might be making mistakes and how I can achieve the desired outcome.
Any insights or guidance would be greatly appreciated. Thank you for your time and assistance.
Sir,
I possess a USBasp programmer for ATmega8A, and I am acquiring a new ATmega2560 board (not just the IC). Now, I intend to program the ATmega2560 using the USBasp programmer. Will the process be as straightforward as the conventional method, wherein I connect the programmer (USBasp) to the board (Mega2560), and upload using the programmer? Can I expect a correct upload, or might issues arise?
To summarize i just want to upload the code using usbasp ? will it change any setting or not Of bootloader fuse. or else what is will method of Usbasp for arduino mega 2560 . Understanding this arduino mega2560 is tricky to upload the sketch
Installing A Sketch using USBasp:
Normally sketches are installed via the USB port on your Arduino, but you can also install them directly using the USBasp which bypasses the bootloader and USB connection. With your sketch open, use the following menu items.
Select Tools > Board and select the board type that matches your target (ATmega2560)
Select Tools > Programmer and select "USBasp" as the programmer type.
Select Sketch > Upload Using Programmer. The Arduino IDE will then compile and upload your sketch onto the target board.
Should I not worry about the D8 to D9 connection when using the USBASP programmer?
According to your instructions, if I follow them, will my Mega2560 board definitely upload the program through the USB Serial again if I do the following steps?
Select programmer: USBasp
Board: Mega2560
Burn the bootloader.
---------OR------------------------------------------------
Install the AVRDUDES software.
Use USBasp with MCU atmega2560 file uploading the Optiboot_mega2560.hex file.
Sir, I am considering the standalone ATmega2560 IC. I want to use it for personal use. I have tried this setup with an Arduino UNO as ISP by changing the D8 to D9 connection. As I mentioned above, I encountered a problem and I am afraid of damaging the IC. Thank you for Answer, need More Suggestion from you sir .
Use D8 if you want to use the bootloader and upload sketches via USB
Use D9 if you don't want use the bootloader and upload sketches using a programmer.
Burning the bootloader first and then upload the code with programmer has not a much sense, because such way you dismiss the first with the latter - uploading the code with programmer will delete the bootloader.
Thank you so much, sir. Some clarity has now come. Suppose I want to upload using a programmer with the D9 configuration. Then, afterward, I want to try uploading via USB. So, in between, I will change the configuration to D8, and then I will burn the bootloader using USBasp. Will this make the whole thing the same as it is? Am I thinking the right way, sir?
