* Support for armv7-m_dcache control via parameter
The FORCE_F7_DCACHE parameter can be set to
0 - (default) if Eratta exits turn dcache off else leave it on
1 - Force it off
2 - Force it on
At boot the system will disable the d-cache if the silicon
has the 1259864 Data corruption in a sequence of Write-Through
stores and loads eratta.
Post nsh script execution the FORCE_F7_DCACHE paramater
will be used to set the d-cache to the state indicated
above.
I2C bus chaged I2C0 is external, I2C1 internal
Added BMM150 on I2C1 @ Addr 0x100
Added BMP280 on I2C1 @ Addr 0x76
UART0 (/dev/ttyS1) now used at Telem 2
Chip select added for W25X40CLUXIG Calibration EE prom
Driver is not added at this time
This is a workaround for the write timeout that we have seen for some
host computers trying to flash the firmware.
We don't know the root cause of the problem but we do observed the
following:
- For blocking writes with timeout (Pyserial write_timeout=0.5):
write() throws SerialTimeoutException. In systrace we see that the
select() call after write waiting for the write to be finished hangs
and finally times out.
- For blocking writes without timeout (Pyserial write_timeout=None):
write() hangs indefinitely. In systrace we see that the
select() call after write waiting for the write to be finished hangs.
- For non-blocking writes:
write() works but flush() hangs. In systrace we see that
ioctl(fd, TCSBRK, 1) which is (correctly) triggered by termios tcdrain
hangs.
Inspecting USB traffic using usbmon, we can see that the data which is
written actually seems to be sent and looking at responses from the
Pixhawk bootloader and the timings it looks like all the data has
arrived.
This workaround uses non-blocking writes without flushing and this
seemed to prevent the issue from happening so far.
Debugging was done in collaboration with Beat Küng and David Sidrane.
The replay functionality was broken with lockstep. This is an interim
fix for the replay functionality.
In the longer term it would be nice to leverage the lockstep speedup
for the replay.
David Sidrane
Matthias Grob
Daniel Agar
bresch
Nuno Marques
Roman
Julian Oes
mcsauder
Nico van Duijn
Alessandro Simovic
Thijs Raymakers
DanielePettenuzzo
CarlOlsson
Beat Küng