Round V21 looks like AFreshTiny Round v2, and has the same hardware peripherals (4 strong lowside NFET outputs, multiple analog inputs, RPM/wheelspeed input and activation inputs, communication port, etc... ) , with more than double memory (flash and SRAM) for new firmware features in the future (theoretically upto about 3 times more software features, or bigger tuning or conversion maps).
The round V21 can be recognized by:
- serialnr > 32000
- ships with fw 0.7.51
- which is same as 1.5.49, for LSU4.9 and includes AIM (that's why 0.x)
- set of options: -D ROUNDV2 -D WBO2 -D ROUND_LSU49 -D AIM
- -D MAN_PROTOCOL is admittedly special (more useful for testing, no direct use in the field normally).
LSU4.9 nernst and pump and heater hardware, EGT, voltage out, boost, PWM0, PWM4 output etc... are tested from VemsTune. There is currently no other firmware released for this HW, for downgrade or upgrade (so only LSU4.9 is supported).
VemsTune "update ini from web" is needed
- or under config/ copy 1.5.12 or 1.5.49 to vemsTune-round-0.7.51.ini (with same contents)
Use it with 0.7.51 firmware
- New firmware will be released for any new firmware features when available.
- or perhaps the same without -D MAN_PROTOCOL if necessary
- (since it fits into flash, this special menu should not be a problem; other than a few seconds more wait after firmware verify ... note: coming).
- any hints that 0.7.51 behavior is inferior to 1.5.49 by any means ?
If attempting upload of an inappropriate fw (the marker word is killed before FW upload fails - which VT notices - causing round to Stay in boot mode - would need serial command to "Leave boot mode")
- Tools / Firmware webtool / 0.7.51 download ...
- => Tools / Firmware / Firmware UPLOAD 0.7.51 fixes this.
NOTE:
- [same as for other recent firmwares] set all to "actual values" (Displaying Peak values can be useful for some slots but confusing in most cases)