Basic Information:
Printer Model: Creality Ender 3
MCU / Printerboard: BTT SKR Mini e3 V1.2
Describe your issue:
Hi Guys, I’ve installed Klipper on my pi 3 B+, but when trying to flash to the MCU on my printer board I get:
SD Card Flash Error: Unable to connect to MCU
Traceback (most recent call last):
File “/home/pi/klipper/scripts/spi_flash/spi_flash.py”, line 1647, in main
spiflash.run()
File “/home/pi/klipper/scripts/spi_flash/spi_flash.py”, line 1584, in run
self.run_reactor_task(self.run_reset_upload)
File “/home/pi/klipper/scripts/spi_flash/spi_flash.py”, line 1570, in run_reactor_task
k_reactor.run()
File “/home/pi/klipper/klippy/reactor.py”, line 292, in run
g_next.switch()
File “/home/pi/klipper/klippy/reactor.py”, line 340, in _dispatch_loop
timeout = self._check_timers(eventtime, busy)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/home/pi/klipper/klippy/reactor.py”, line 158, in _check_timers
t.waketime = waketime = t.callback(eventtime)
^^^^^^^^^^^^^^^^^^^^^
File “/home/pi/klipper/klippy/reactor.py”, line 48, in invoke
res = self.callback(eventtime)
^^^^^^^^^^^^^^^^^^^^^^^^
File “/home/pi/klipper/scripts/spi_flash/spi_flash.py”, line 1518, in run_reset_upload
self.mcu_conn.connect()
File “/home/pi/klipper/scripts/spi_flash/spi_flash.py”, line 1202, in connect
raise SPIFlashError(“Unable to connect to MCU”)
SPIFlashError: Unable to connect to MCU
#=======================================================#
Flashing failed!
Please read the console output above!
#=======================================================#
Any ideas?