1284pu cant upload program

[hammy]

Hi,

I have built a board using a 1284p processor and have had the simple blink program running ( without bootloader) , programmed via USBtiny and Arduino IDE after installing the mighty core library.

The chip I used is a 1284PU .I changed the device signiature in arduino config to 1E 97 06 from 1E 97 05 to match the chip.

I then used the Arduino IDE and loaded the bootloader using a UNO as ISP, this showed no errors.

[Board selected in IDE :

"manicbug" 1284 mighty 1284P 16Mhz using Optiboot]

reading from bit burner: (using AVRtiny onto ICSP connector)

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% -0.00s

avrdude.exe: Device signature = 0x1e9706
avrdude.exe: Expected signature for ATMEGA1284P is 1E 97 05

upon up loading blink with IDE (1.8.1) via FTDI board onto Tx0 Rx0. (10k, .15uF on reset to DTR)
I get this message:

Sketch uses 1084 bytes (0%) of program storage space. Maximum is 130048 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 16375 bytes for local variables. Maximum is 16384 bytes.
avrdude: Expected signature for ATmega1284P is 1E 97 06
Double check chip, or use -F to override this check.
Wrong microcontroller found. Did you select the right board from the Tools > Board menu?

Any help as to what has gone wrong ? any advice appreciated, or do you need to know any more details ?

thx.

[pert]

No need to muck around with the signature definitions. Use the far superior MightyCore:

GitHub - MCUdude/MightyCore: Arduino hardware package for ATmega1284,...

Then you only need to select Tools > Variant > 1284.

That Mighty 1284P hardware package you're using was good in its day but it was completely abandoned by 3 different maintainers and after the last one nobody was given the reins so it's well and truly dead now. Luckily MCUdude came along and gave us something even better.

[hammy]

Ok thx , I’ll give it a whirl

[hammy]

Yep tried that worked first time ( well after I selected 1284 instead of 1284p and rembered to power the board).

I showed the wife the led blinking , but she’s not impressed.

Thx for the help

[pert]

You're welcome. I'm glad to hear it's working. The ATmega1284 is a great chip. Enjoy!
Per

[hammy]

Couple of things:

1. This is mainly a test to upload a picture* as Ive not done that before, but it is (sort of) topic related. (* following robin2's guide)

2. This is my development board for the 1284 , used in this thread, that might be of interest. I prefer to use these if I I'm working on something in the medium term- for the cost of making a PCB (but I've 10 of therm lol) and I have other boards for Microview and NANO's. I've bought all the pins out, provided a 5v and 3v3v supply (not populated the 3v3).
   I've build in two 0-5v sources via pots, , analog inputs with voltage dividers (AB) ,two open collector outputs, 4 LED's and 4 push buttons, some pull up and pull down resistors plus a DS1820 connection. For coms it has a MAX232 , ICSP and FDTI headers. You just use short jumpers to connect whatever you want to use.