Hello all,
I have an Ender 3 pro with a 1.1.4 board which has an atmega1284p on. I (believe) I have successfully burned a bootloader to this MCU since I am able to flash klipper firmware on it by running “make flash …” - in fact I have done this more than once at this point.
I am running klipper/moonraker/fluidd on an OrangePi zero (I actually flashed klipper firmware on the atmega using the OrangePi zero).
Fluidd is displaying the following error:
"Printer is not ready
The klippy host software is attempting to connect. Please
retry in a few moments."
Checking the klippy.log file, it is seen that the attempts to connect to the MCU end with/get stuck at:
"MCU 'mcu' config: RECEIVE_WINDOW=192 BUS_PINS_spi=PB6,PB5,PB7 SERIAL_BAUD=115200 ADC_MAX=1023 PWM_MAX=255 RESERVE_PINS_serial=PD0,PD1 BUS_PINS_twi=PC0,PC1 MCU=atmega1284p STATS_SUMSQ_BASE=256 CLOCK_FREQ=16000000
Sending MCU 'mcu' printer configuration..."
I can succesfully connect to and run debug commands on the MCU using following command:
~/klippy-env/bin/python ./klippy/console.py -b 115200 -v /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0
The baud rate is in alignment with the loaded firmware - I built it this way to see if 250000 is too high - this did not resolve the issue as you can see 
.
I would appreciate any ideas/pointers as to why this issue might be happening.
Here is the klippy.log:
klippy.log (17.2 KB)
Regards