[gpsd-dev] New 0.5 draft of the SemPiTernal HOWTO

[Frank]

> On May 5, 2016, at 1:14 PM, Gary E. Miller <gem at rellim.com> wrote:
> 
> Yo Frank!
>> Nope - that only applies on the Raspberry Pi 3, with the BT using the
>> ttyAM0 lines.  If you remap the serial back, how the previous PI’s
>> are, then the serial speed is not tied to the CPU clock.
> 
> If you can explain how to do that to Eric, so he can explain it to us,
> that would be great.
> 
> Saving power is a big deal in mobile applications.
> 


The “force_turbo=1” was part of the solution, if you wanted to *keep* BT functionality

Eric’s already fixed this.  The section:
------------------------------------------------------------------------
# Disable Bluetooth so serial-tty speed is no longer tied to CPU speed
dtoverlay=pi3-miniuart-bt-overlay
force_turbo=1
------------------------------------------------------------------------

Just adding the dtoverlay above resolves the issue.  Eric can remove the “force_turbo=1” on his Pi 3 & confirm the serial port is still reliable.