The leading - makes it rather inconsistent with the majority of other
projects around the world. Use the form everyone else uses.
To solve this, properly pass prefix to inner makes as was always
intended.
Fixes: https://github.com/libopencm3/libopencm3/issues/1058
Renamed every instance of variable CFLAGS in target specific Makefiles
to TGT_CFLAGS to free up CFLAGS for user defined compiler flags.
Added information in README.md about existence and usage of CFLAGS
environment variable in build process.
-ggdb3 make slightly bigger .elf files, but allows gdb to understand
macros, which libopenocm3 uses somewhat extensively. Make this the
default, and pull it up to the common base makefile, so it can be easily
substituted.
On linux, the output of CP rule was try to write to / which is - of course, forbidden for write.
This solution adds to each part of lib correct pointer to the root of lib where the libs should be written.
Bug found by Kuldeep Singh Dhaka.
We currently default to "-mfloat-abi=hard -mfpu=fpv4-sp-d16" for M4F cores, and
and variations of "-mfloat-abi=soft" for the others. Keep the M4F default, and
move others to no FP flags for consistency, but allow overriding these flags
via the FP_FLAGS environment variable.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Implement a basic driver for the LM4F USB controller. The driver is in a
basic form. DMA is not yet implemented. Double-buffering is supported by
the hardware, but is not yet implemented
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add basic functionality needed to setup the UART and send/recieve data.
Interrupts, DMA, and more advanced features are not implemented in this patch.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add an abstraction layer to handle the clock control for the run time clock on
LM4F (RCC). Sleep and deep-sleep clock configuration is not handled.
Complete documentation for the clock control API is included in doxygen-style
comments, and is included in [doc].
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Conflicts:
lib/lm4f/Makefile
The enum definitions are specified in the form
31:5 register offset from SYSCTL_BASE for the clock register
4:0 bit offset for the given peripheral
The names have the form [clock_type]_[periph_type]_[periph_number]
Where clock_type is
RCC for run clock
SCC for sleep clock
DCC for deep-sleep clock
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Specify the -mfloat-abi=hard and -mfpu=fpv4-sp-d16 flags so that FPU
is enabled by default.
While this compiles with FPU support, in order to use the floating point types,
the FPU must be explicitly enabled at runtime.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Create lm4f code infrastructure from the lm3s infrastructure.
As far as the interrupt table is concerned, don't create an irq.yaml. Just
include the LM3S nvic.h. The LM3S vector table seems to be compatible with the
LM4F
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
previously, only stm32 chips passed the information about which chip to
build on into the compiler. this information is essential to dispatch,
thus defining LPC13XX, LPC17XX, LPC43XX and LM3S in analogy to
STM32F1..4.
Adds libopencm3/cm3/assert.h header that provides assertion check macros
similar to those provided by the standard C library.
Thanks to Nicolas Schodet for help.
- The library files are now being built into the lib subdirectory of the
source.
- The linker files for each library are being copied into the lib source
subdirectory.
Motivation: The relative locations of files in the source directory after make
are now the same as after make install now. This makes it easier to
reuse examples with their makefiles outside of the libopencm3
sourcecode directory.
Changed the license to LGPL3+ for some makefiles that got ommited in the
previous big patch commit.
Corrected a find and replace error in a linker file.
This is the first working example code which is tested on hardware.
The LED on the Olimex STM-H103 eval board is happily blinking.
We use a dummy "delay" function (basically a busy-waiting for-loop), which
will only work if you use -O0 in CFLAGS (-O2, -O3, or -Os will not work as
the compiler optimizes the loop away).
We use some arbitrary value for stack size (2 KB) and use main()
directly as the reset vector function. This will change later.
Also, we do the GPIO and clock init as well as the GPIO toggling for the
LED blinking fully "manually" for now, but there may be more higher-level
functions for doing that at some later date.
Karl Palsson
Dmitry Rezvanov
Karl Palsson
Tido Klaassen
Karl Palsson
Frantisek Burian
Alexandru Gagniuc
Piotr Esden-Tempski
chrysn
Tomaz Solc
Fergus Noble
Gareth McMullin
Uwe Hermann