Subpage of AfreshTiny/FirmwareUpgrade, AfreshTiny
Supply voltage and communication connection must be stable during AfreshTiny/FirmwareUpgrade
If upgrade is not successful for some reason, "SSSS"-flooding is needed. (this procedure is different from the GenBoard/Firmware/BootLoaderLoopback )
- start "SSSSS"-flooding
- either from VemsTune Tools, after setting up preferences/communication properly.
- or from a TerminalProgram, "Send file": sending a big file full of "S" characters (min 50000, as 19200,8n1 means 1920 characters sent per second). Newlines are OK. Eg with wordpad copy 300 lines into a txt file with 200 "S" characters / line. Case is important (must be Capital-S, not lowercase-s !!!).
- pressing SSSSSS on the keyboard in TerminalProgram will NOT work
- power up round device
- if round answers "AVR2" message upon "S", that is a clear indication it went to boot loader
- upload firmware
- either with the firmwareuploadcomx.bat (==roundloader.exe)
- or with VemsTune
- repeat the above procedure if does not succeed. As it seems that trying up to 5..10 times was necessary in some cases, new wizard that makes this even easier should be available in VemsTune 2010-04-13