Hi, (yes, I also have a FTDI USB<=>serial adapter...in this case I need to get my CH340 based work)
this drives me crazy... My CH340G USB<=>serial adaptor is recognized as (lsusb) Bus 007 Device 011: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter (dmesg) [52255.016438] usb 7-4: new full-speed USB device number 11 using ohci-pci [52255.167432] usb 7-4: New USB device found, idVendor=1a86, idProduct=7523 [52255.167439] usb 7-4: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [52255.167443] usb 7-4: Product: USB2.0-Serial [52255.169580] ch341 7-4:1.0: ch341-uart converter detected [52255.179543] usb 7-4: ch341-uart converter now attached to ttyUSB3 But that's it. It does not seem to react on any kind of action I try to achieve with avrdude (I skipped the arduino IDE to get one variable off this eqyitation...). I instructed avrdude to "speak to the board" like this: avrdude -p ATmega2560 -c arduino -P /dev/ttyUSB3 -b 9600 ...but the only reaction I get is ...timeouts... I have no clue what to do next. How can I devide the things which are working so far from those which are not working. The ATmega2560 board is working - I can flash it via buspirate (ICSP). I burned a bootloader with that...just to mention...not wanting to start an Arduino discussion on a Gentoo mailinglist...only to explain the context a little bit... What is the status of the ch340/ch341 driver? (I am running kernel 4.12.3 vanilla right off Linus desktop so to say...) Thanks a lot for any help in advance! Cheers Meino
