[chirp_devel] [PATCH] [FT-70] New Model #5329 Increased second block size

[Dan Smith]

> A quick inspection of the FT70 firmware package from Yaesu shows this
> is a Renesas microcontroller with a native USB port. In this case it
> emulates a serial port directly in firmware, rather than a separate
> USB-serial bridge chip. That's probably a first for an HT, but it's
> pretty common in the wider microcontroller world.

Yeah, I meant it'd be the first time I saw an HT that didn't just have a USB-serial bridge chip in it, despite appearing to have "native USB".

> On devices like that, they just absorb the baud rate changes and
> pretend to be running at that rate, but it's a no-op inside the
> microcontroller. Because of this, the actual data rate over the wire
> can be much faster, since it's only limited by USB data rate and
> microcontroller speed.
> 
> Nicolas, I wouldn't worry about the baud rate changes; just leave it
> how it was and it should work fine and operate at max throughput
> regardless. However, changing it also shouldn't cause issues.

Agreed, especially if this is a reading problem and not a writing one, I wouldn't expect it to matter for stability.

--Dan