ISR. This leads to a possible condition where a copy is taking place in
userspace and then a buffer swap interrupts it. However, the copy should
always finish before the SPI DMA slave catches up to that place in memory at 10
MHz.
This fixes a common condition where the userspace task (low priority) was not
swapping buffers in time from user space and logs were corrupted.
from an ISR. This was causing lock ups. It's a bit higher latency probably
(trivially slow) but if we aren't keeping up with the Overo transactions then
using a proper DMA double buffer will be required.
A separate makefile for EF (Entire Flash) targets allows
the removal of board-specific hard-coded addresses. These
values can now be included from the board-info.mk files
for each board.
These new build targets will construct a flash image that
includes both a bootloader as well as a firmware image all
in one. Examples:
make ef_coptercontrol
make ef_revolution
This also adds support for a new target for writing this EF
image to boards that support a DFU interface (only F4-based
boards). This can be done by running:
make dfuutil_install
# Boot board with SBL asserted to activate STM32 DFU ROM
# Attach USB cable
make ef_revolution_dfu
Bootloader images are also now padded out to occupy the full
BL flash region.
transaction doesn't start at the beginning again. Something is still not quite
right because first few bytes aren't getting across. Need logic analyzer.
transactions should already be completed. Also reset the callback so in the
case of noise on the IRQ line it will not keep firing interrupts.
I suspect we should probably disable interrupts in this handler to prevent
refiring.
The PIOS_MASTER_CLOCK has been removed in favor of
PIOS_SYSCLK (the master clock value,168000000 for revolution)
PIOS_PERIPHERAL_APB1_CLOCK and
PIOS_PERIPHERAL_APB2_CLOCK
Look at STM32F4xx_Revolution.h for the list of timer/peripheral and APB them belongs.
This tool can be used to read/write the interal device flash
in an STMF4 MCU via the built-in bootloader.
dfu-util can be downloaded and installed using this command:
make dfuutil_install
The homepage for this tool is at:
http://dfu-util.gnumonks.org/
